QUC

• 1♣: nat. ♣ if min always 4M; strong N or 19+ not 2-suited
  • 1♦: 0-5 or 6-9 not 4crd M; bal. or 5+♦
    • 1♥: 18+ bal. or 19+ unbalanced
      • 1♠: 0-5 no 6crd
        • 1NT: 18-20 balanced
          • 2♣: to play
          • 2♦: to play
          • 2♥: to play
          • 2♠: to play
          • 2NT: both minors or both majors
        • 2♣: 5m422; 5m431 or 4441; if 5-4Ms less then FG; 25+ bal.
          • 2♦: trf. ♥
            • 2♥: 3+ F0
              • 2♠: 4-4 majors
              • 2NT: 5♥-4♠
              • 3♣: max stopper
              • 3♦: max stopper
              • 3♥: 5+
            • 2♠: 4crd ♠ 0-2 ♥ F0
              • 2NT: no ♠-fit ♦-preference
              • 3♣: no ♠-fit ♣-preference
              • 3♦: max stopper
              • 3♥: max ♣-stopper
            • 2NT: 19-22 max. doubleton O
            • 3♣: 23+ 5♣
            • 3♦: 23+ 5♦
            • 3♥: splinter raise
            • 4♦: splinter raise
          • 2♥: trf.♠
            • 2♠: 3+♠ F0
              • 2NT: 5♠-4♥
              • 3♣: max stopper
              • 3♦: max stopper
              • 3♥: max stopper
              • 3♠: 5+
            • 2NT: 19-22 max. doubleton O
            • 3♣: 23+ 5♣
            • 3♦: 23+ 5♦
            • 3♥: 23+ exactly 1444
            • 3♠: 4+ ♠
            • 4♣: splinter raise
            • 4♦: splinter raise
            • 4♥: splinter raise
          • 2♠: not 4M; if 3-5 balanced
            • 2NT: both minors or FG
              • 3♣: preference
              • 3♦: preference
              • 3♥: max stopper
              • 3♠: max stopper
              • 3NT: max no M-stopper
          • 2NT: 0-3 both Ms
            • 3♣: 5♣-4♦ 25+ F1
            • 3♦: 5♦-4♣ 25+ F1
          • 3♣: 3-5 6+♣
            • 3♥: 5♥-4♠ F1
            • 3♠: 5♠-4♥ F1
          • 3♦: 3-5 6+♦
            • 3♥: 5♥-4♠ F1
            • 3♠: 5♠-4♥ F1
        • 2♦: minor 1-suiter
          • 2♥: 3-5 stopper
            • 2NT: stoppers F0
            • 3♣: 6+♣ F0
            • 3♦: 6+♦ F0
            • 3♥: 6+♣ FG
            • 3♠: 6+♦ FG
            • 3NT: to play
            • 4♣: Minorwood
            • 4♦: Minorwood
          • 2♠: 3-5 stopper
            • 2NT: stoppers F0
            • 3♣: 6+♣ F0
            • 3♦: 6+♦ F0
            • 3♥: 6+♣ FG
            • 3♠: 6+♦ FG
            • 3NT: to play
            • 4♣: Minorwood
            • 4♦: Minorwood
          • 2NT: 3-5 not M-stopper
            • 3♣: 6+♣ F0
            • 3♦: 6+♦ F0
            • 3♥: 6+♣ FG
            • 3♠: 6+♦ FG
            • 3NT: to play
            • 4♣: Minorwood
            • 4♦: Minorwood
          • 3♣: 0-3
            • 3♥: 6+♣ FG
            • 3♠: 6+♦ FG
            • 3NT: to play
            • 4♣: Minorwood
            • 4♦: Minorwood
          • 3♦: 3-5 fit for both m semi-bal
            • 3♥: 6+♣ asks ♦-stopper
            • 3♠: 6+♦ asks ♣-stopper
            • 3NT: to play
            • 4♣: Minorwood
            • 4♦: Minorwood
        • 2♥: 5♥-4m or 5♥-3-3-2 F0
          • 2NT: asks m or GI(+) with fit
            • 3♣:
              • 3♥: GI
              • 3♠: splinter raise ♠ shortness
            • 3♦:
              • 3♥: GI
              • 3♠: splinter raise ♠ shortness
          • 3♣: weak misfit both minors
          • 3♦: 3-5 stopper
          • 3♥: 3-5 ♣-stopper
          • 3♠: 3-5 stopper
          • 3NT: 4-5 distributed values
          • 4♣: splinter raise
          • 4♦: splinter raise
        • 2♠: 5♠-4m or 5♠-3-3-2 F0
          • 2NT: asks m or GI with fit
            • 3♣:
              • 3♠: GI
            • 3♦:
              • 3♠: GI
          • 3♣: weak misfit both minors
          • 3♦: 3-5 stopper
          • 3♥: 3-5 ♣-stopper
          • 3♠: 3-5 stopper
          • 3NT: 4-5 distributed values
          • 4♣: splinter raise
          • 4♦: splinter raise
          • 4♥: splinter raise
        • 2NT: 23-24 balanced
          • 3♣: Stayman
            • 3♦: No major
              • 3♥: Smolen
              • 3♠: Smolen
              • 4♣: to play
              • 4♦: to play
            • 3♥:
              • 4♣: to play
              • 4♦: to play
            • 3♠:
              • 4♣: to play
              • 4♦: to play
          • 3♦: trf. ♥
          • 3♥: trf. ♠
          • 3♠: 5-5 minors mild slam try
          • 4♣: 5-5 minors weak
        • 3♣: 23-24 5-4 minors
          • 3♦: preference
          • 3♥: some values denies ♠ stopper; 5(+)♥ possible
            • 3♠: asks ♥-stopper
            • 3NT: to play
            • 4♣: longer ♣
            • 4♦: longer ♦
            • 4♥: 13(54)
              • 4NT: asks longer minor
          • 3♠: some values ♠ stopper; 5(+)♠ possible
            • 3NT: to play
            • 4♣: longer ♣
            • 4♦: longer ♦
            • 4♠: 13(54)
              • 4NT: asks longer minor
        • 3♦: sets ♦ forces cue-bids
        • 3♥: sets ♥ forces cue-bids
        • 3♠: sets ♠ forces cue-bids
        • 3NT: sets ♣ forces cue-bids
      • 1NT: 6(+)m
        • 2♣: p/c
          • 2♥: 3-5 4♥-6m
          • 2♠: 3-5 4♠-6m
        • 2♦: relay
          • 2♥: 6(+)♣ not 4M
            • 2♠: relay
              • 2NT: 3crd ♥
              • 3♣: 3crd ♠
              • 3♦: 3crd in both+ Ms
              • 3♥: no 3crd M
          • 2♠: 6m-4M
            • 2NT: relay
              • 3♣: ♣+♥
              • 3♦: ♣+♠
              • 3♥: ♦+♥
              • 3♠: ♦+♠
          • 2NT: 6(+)♦ 3crd ♥
          • 3♣: 6(+)♦ 3crd ♠
          • 3♦: 6(+)♦ 3crd in both+ Ms
          • 3♥: 6(+)♦ no 3crd M
        • 2♥: nonforcing
          • 2NT: fit with outside shortness
            • 3♣: asks suit and shortness
              • 3♦: ♣ plus ♦-shortness
              • 3♥: ♣ plus ♠-shortness
              • 3♠: ♦ plus ♣-shortness
              • 3NT: ♦ plus ♠-shortness
          • 3♣: natural no fit
          • 3♦: natural no fit
          • 3♥: fit (semi-) balanced
        • 2♠:
          • 2NT: Fit; outside shortness
            • 3♣: asks suit and shortness
              • 3♦: ♣ plus ♦-shortness
              • 3♥: ♣ plus ♥-shortness
              • 3♠: ♦ plus ♣-shortness
              • 3NT: ♦ plus ♥-shortness
          • 3♣: natural no fit
          • 3♦: natural no fit
          • 3♠: fit (semi-) balanced
      • 2♣: 6-9 5(+)♦
        • 2♦: stopper ask
        • 3♦: shortness ask
          • 3♥: shortness
          • 3♠: shortness
          • 3NT: ♣-shortness
      • 2♦: 6(+)♠ not 4♥
        • 2♥: natural
          • 2NT: Fit; outside shortness
            • 3♣: asks shortness
              • 3♦: ♣-shortness
              • 3♥: ♦-shortness
          • 3♥: fit; no shortness
        • 2♠: to play
      • 2♥: 6(+)♥ not 4♠
        • 2♠: natural
          • 2NT: fit with outside shortness
            • 3♣: asks shortness
              • 3♦: ♣-shortness
              • 3♥: ♦-shortness
          • 3♥: fit without shortness
      • 2♠: 6-9 balanced denies 5crd ♦
        • 2NT: relay
          • 3♣: 5crd ♣
            • 3♦: relay
              • 3♥: exactly 3235
              • 3♠: exactly 2335
              • 3NT: exactly 3325
          • 3♦: 4-4 minors
            • 3♥: relay
              • 3♠: exactly 3244
              • 3NT: exactly 2344
            • 3♠: exactly 3343
            • 3NT: exactly 3334
      • 2NT: 5♥-5m
        • 3♣: p/c
        • 3♦: GI ♥
      • 3♣: 7crd with one of AKQ
      • 3♦: 7crd with one of AKQ
      • 3♥: 7crd with one of AKQ
      • 3♠: 7crd with one of AKQ
    • 1♠: 12-18 5♣-4♠ or exactly 4414 also 16-18 5♣-4♥
      • 1NT: 6-9 not 4M
        • 2♣: 12-16 5♣-4♠
        • 2♦: 17-18 stopper
        • 2♥: 17-18 stopper
        • 2♠: 17-18 stopper
        • 2NT: 17-18 stoppers
      • 2♣: to play
      • 2♦: 4-7 6(+)♦
      • 2♥: weak p/c
    • 1NT: 15-17 balanced
      • 3♣: both minors GI
      • 3♦: 6(+)♦ GI
    • 2♣: 12-16 5♣-4♥
    • 2♦: FG 5crd M
      • 2♥: 0-5 not a good 5crd
        • 2♠:
          • 2NT: forced
            • 3♣: 5(+)♥-4♣
            • 3♦: 5(+)♥-4♦
            • 3♥: 5(+)♥-4♠
            • 3♠: 6(+)♥
            • 3NT: 6(+)♥ stoppers
        • 2NT: 5crd M balanced
          • 3♣: �Stayman�
          • 3♦: trf. ♥
          • 3♥: trf. ♠
          • 3♠: 5-5 minors mild slam try
          • 4♣: 5-5 minors weak
          • 4♦: 6(+)♦ mild slam try
        • 3♣: 5(+)♠-4♣
        • 3♦: 5(+)♠-4♦
        • 3♥: 5(+)♠-4♥
        • 3♠: 6(+)♠
        • 3NT: 6(+)♠ stoppers
      • 2♠: some 5crd headed by A; K or QJ
        • 2NT: asks
          • 3♠: 5(+)♠ max 2♥
          • 3NT: 5(+)♠-3♥
      • 2NT: 6-9 balanced
        • 3♣: 4♣-5M
          • 3♥: doubleton ♥ w/o ♣-fit
          • 3♠: doubleton ♠ w/o ♣-fit
          • 3NT: 3-3 Ms w/o ♣-fit
        • 3♦: 4♦-5M
          • 3♥: doubleton ♥ w/o ♦-fit
          • 3♠: doubleton ♠ w/o ♦-fit
          • 3NT: 3-3 Ms w/o ♦-fit
      • 3♣: 6-9 5(+)♦-4♣
      • 3♦: 6-9 6(+)♦
    • 2♥: semiforcing
      • 2NT: 6-9 balanced
      • 3♣: 6-9 5(+)♦-4♣
      • 3♦: 6-9 6(+)♦
    • 2♠: semiforcing
      • 2NT: 6-9 balanced
      • 3♣: 6-9 5(+)♦-4♣
      • 3♦: 6-9 6(+)♦
    • 2NT: 21-22 balanced
      • 3♣: Stayman
        • 3♦: No major
          • 3♥: Smolen
          • 3♠: Smolen
          • 4♣: to play
          • 4♦: to play
        • 3♥:
          • 4♣: to play
          • 4♦: to play
        • 3♠:
          • 4♣: to play
          • 4♦: to play
      • 3♦: trf. ♥
      • 3♥: trf. ♠
      • 3♠: 5-5 minors mild slam try
      • 4♣: 5-5 minors weak
    • 3♣: 16-18 6(+)♣
    • 3♦: RKCB3041
    • 3♥: RKCB3041
    • 3♠: RKCB3041
    • 3NT: RKCB3041 ♣
    • 4♣: Exclusion3041
    • 4♦: Exclusion3041
    • 4♥: Exclusion3041
    • 4♠: Exclusion3041
  • 1♥: longer minor possible
    • 1♠: 4crd ♠ 15-18 balanced or 16-18 unbalanced
      • 1NT: 6-8 usually not 5♥
      • 2♣: 6-8 5crd ♥ plus ♣ tolerance
        • 2♦: doubleton ♥
        • 2♥: balanced minimum with 3crd ♥
        • 2♠: maximum without fit or ♦-stopper
        • 3♦: balanced maximum with 3crd ♥
        • 3♥: unbalanced minimum with 3crd ♥
      • 2♦: art. gameforce
        • 2♥: 16-18 5♣-4♠
          • 2NT: ♣ slam try
          • 3♣: 4♥ no ♦-stopper
          • 3♦: 5♥ no ♦-stopper
          • 3♥: natural slam try
          • 3♠: natural slam try
          • 3NT: 5♥ ♦-stopper
          • 4♣: 5♥ to strong for 3N
          • 4♦: 5♥ to strong for 3N ♣-fit
        • 2♠: 15-18 balanced
          • 2NT: natural slam try
          • 3♣: natural slam try always 5(+)♥
          • 3♦: natural slam try always 5(+)♥
          • 3♥: natural slam try
          • 3♠: natural slam try
        • 3♣: good 6-4
          • 3♦: no ♦-stopper
          • 3♥: natural slam try
          • 3♠: natural slam try
          • 4♣: natural slam try
          • 4♦: RKCB3041 ♣
        • 3♦: exactly 4360 good ♦
          • 3♥: natural slam try
          • 3♠: natural slam try
          • 4♣: natural slam try
          • 4♦: RKCB3041 ♦
      • 3♣: 4♥-5♣ FG
      • 3♦: 4♥-5♦ FG
      • 3♥: natural invite
      • 3♠: natural invite
      • 4♣: RKCB3041 ♥
      • 4♦: RKCB3041 ♦
      • 4NT: RKCB3041 ♠
    • 1NT: 15-18 balanced not 4M
      • 2♣: forces 2♦; weak with ♦ or GI(+) with 5(+) ♥
        • 2♦: forced
          • 2♥: GI natural
          • 3♣: distributional invite 5-5
          • 3♦: distributional invite 5-5
          • 3NT: choice of games
      • 2♦: FG 5crd ♥
        • 2♥: fit
        • 2NT: doubleton ♥
        • 3♣: exactly 3235 with good suit
        • 3♦: exactly 3253 with good suit
      • 2♥: nonforcing
      • 3♣: 4♥-5♣ FG
      • 3♦: 4♥-5♦ FG
      • 3♥: slam invite
        • 3♠: non-serious
        • 3NT: serious ♠-que
      • 3♠: autosplinter
      • 4♣: autosplinter
      • 4♦: autosplinter
      • 4♠: RKCB3041 ♥
    • 2♣: 12-15 5♣-4♠
      • 2♦: art. gameforce; standard 4SF by passed hand
        • 2♥: default
          • 2NT: ♣ slam try
          • 3♣: 4crd ♥ no ♦-stopper
          • 3♦: 5crd ♥ no ♦-stopper
          • 3♥: natural slam try
          • 3♠: natural slam try
          • 4♣: ambiguous slam try 5crd ♥ ♣-fit
          • 4♦: ambiguous slam try 5crd ♥ no ♣-fit
        • 3♣: good 6-4
        • 3♦: exactly 4306 good ♣
      • 2♥: natural constructive
      • 2♠: preference
      • 3♦: 4♥-5♦ FG
      • 4♣: RKCB3041 ♣
      • 4♦: RKCB3041 ♥
      • 4NT: RKCB3041 ♠
    • 2♦: 19+ max 3crd ♥
      • 2♥: 9+; 5crd ♥
        • 2♠: natural
        • 2NT: punt
          • 3♥: 5♥-4♠
          • 3♠: 6(+)♥
        • 3♣:
          • 3♥: 5♥-4♠
          • 3♠: 6(+)♥
        • 3♦:
          • 3♥: 5♥-4♠
          • 3♠: 6(+)♥
      • 2♠: 6-8
        • 2NT: relay
          • 3♣: 4♥
            • 3♦: asks shortness
              • 3♥: ♣-shortness or no shortness
              • 3♠: ♦-shortness
              • 3NT: ♠-shortness
          • 3♦: 5♥-4♠
          • 3♥: 5♥ ♣-shortness or no shortness
            • 3♠: asks
              • 3NT: no shortness
              • 4♣: ♣-shortness
          • 3♠: 5♥ ♦-shortness
          • 3NT: 5♥ ♠-shortness
        • 3♣:
          • 3♥: 5♥ no fit
          • 3♠: 4♥ no fit
          • 3NT: ♣-fit w/o splinter
          • 4♣: ♣-fit ♠ splinter
          • 4♦: ♣-fit ♦ splinter
        • 3♦:
          • 3♥: 5♥ no fit
          • 3♠: 4♥ no fit
          • 3NT: ♦-fit w/o splinter
          • 4♣: ♦-fit ♠ splinter
          • 4♦: ♦-fit ♣ splinter
        • 3♥: 5(+)♠ no ♥-fit
          • 3♠: no ♠-fit
          • 3NT: ♠-fit w/o splinter
          • 4♣: ♠-fit splinter
          • 4♦: ♠-fit splinter
        • 3♠: 3crd ♥ ♠-shortness; likely 13(54)
      • 2NT: 9+; 4♥ balanced
        • 3♣: relay
          • 3♦: 4♦-4♥
          • 3♥: 4♣-4♥
          • 3♠: 4♠-4♥
          • 3NT: exactly 3433; 9-11
          • 4♣: exactly 3433; 12-14
          • 4♦: exactly 3433;15-17
        • 3♥: 5(+)♣
      • 3♣: 9+; 4♥-5♣
        • 3♥: 5(+)♦
      • 3♦: 9+; 4♥-5♦
        • 3♥: 5(+)♣
      • 3♥: 9+; exactly 4414
      • 3♠: 9+; exactly 4441
    • 2♥: 4crd ♥ value of 14-16
      • 2♠: relay
        • 2NT: 5♣-4♥ some splinter
          • 3♣: asks shortness
            • 3♦: ♦-splinter
            • 3♥: ♠-splinter
        • 3♣: exactly 4414
        • 3♦: balanced
        • 3♥: exactly 2425
        • 3♠: void
        • 3NT: exactly 2425 with A or K in doubletons
        • 4♦: void
      • 2NT: ♠-shortness GI (seldom slam try)
      • 3♣: ♣-shortness GI (seldom slam try)
      • 3♦: ♦-shortness GI (seldom slam try)
      • 3♠: void
      • 4♣: void
    • 2♠: 4crd ♥ ♠-splinter value of 17-18
      • 3♠: non-serious slam try
      • 3NT: serious ♠-que
      • 4♣: serious ♣-que (A or K)
      • 4♦: serious ♦-que
    • 2NT: 16-18 6(+)♣ with 3crd ♥ or 4crd ♥ ♦-splinter value of 17-18
      • 3♣: p/c
      • 3♦: strong relay
        • 3♥: 4crd ♥ ♣-splinter value of 17-18
        • 3♠: 16-18 6(+)♣ with 3crd ♥; ♠-stopper
        • 3NT: 16-18 6(+)♣ with 3crd ♥; ♦-stopper
    • 3♣: 16-18 6(+)♣ denies 3crd ♥
    • 3♦: 19+ 4(+)♥
      • 3♥: 9+; 4♥ balanced
        • 3♠: non-serious
        • 3NT: serious ♠-que
      • 3♠: 6-8; splinter
      • 3NT: 6-8; no splinter
      • 4♣: 6-8; splinter
      • 4♦: 6-8; splinter
    • 3♥: 4crd ♥ no splinter value of 17-18
    • 3♠: FG splinter bid (not strong variant)
    • 3NT: based upon long good ♣
    • 4♣: FG raise without splinter (not strong variant)
    • 4♦: FG splinter bid (not strong variant)
    • 4♥: distributional raise with points in ♣ and ♥
  • 1♠: longer minor possible
    • 1NT: 15-18 balanced not 4♠
      • 2♣: forces 2♦; weak with ♦ or GI(+) with 5(+)♠
        • 2♦: forced
          • 2♠: GI natural
          • 3♣: distributional invite 5-5
          • 3♦: distributional invite 5-5
          • 3♥: distributional invite 5-5
          • 3NT: choice of games
      • 2♦: FG 5crd ♠
        • 2♥: 4crd ♥ may have ♠-fit
        • 2♠: fit
        • 2NT: doubleton ♠ w/o ♣-fit
        • 3♣: exactly 3235 with good suit
        • 3♦: exactly 3253 with good suit
      • 2♥: nonforcing
      • 2♠: nonforcing
      • 3♣: 4♠-5♣ FG
      • 3♦: 4♠-5♦ FG
      • 3♥: 5♠-5♥ FG
      • 3♠: slam invite
        • 3NT: non-serious
      • 4♣: autosplinter
      • 4♦: autosplinter
      • 4♥: autosplinter
      • 4NT: RKCB3041 ♥
    • 2♣: 12-15 5♣-4♥
      • 2♦: art. gameforce; standard 4SF by passed hand
        • 2♥: default
          • 2NT: ♣ slam try
          • 3♣: 4crd ♠ no ♦-stopper
          • 3♦: 5crd ♠ no ♦-stopper
          • 3♥: natural slam try
          • 3♠: natural slam try
          • 4♣: ambiguous slam try 5crd ♠ ♣-fit
          • 4♦: ambiguous slam try 5crd ♠ no ♣-fit
        • 3♣: good 6-4
        • 3♦: exactly 3406 good ♣
      • 2♥: preference
      • 2♠: natural constructive
      • 3♦: 4♠-5♦ FG
      • 4♣: RKCB3041 ♣
      • 4♦: RKCB3041 ♥
      • 4NT: RKCB3041 ♠
    • 2♦: 19+ max 3crd ♠
      • 2♥: 9+; 5crd ♠
        • 2♠: 5(+)♥-4♣
        • 2NT: punt
      • 2♠: 6-8
        • 2NT: relay
          • 3♣: 4♠
            • 3♦: asks shortness
              • 3♥: ♣-shortness or no shortness
              • 3♠: ♦-shortness
              • 3NT: ♥-shortness
          • 3♦: 5♠-4♥
          • 3♥: 5♠ ♣-shortness or no shortness
            • 3♠: asks
              • 3NT: no shortness
              • 4♣: ♣-shortness
          • 3♠: 5♠ ♦-shortness
          • 3NT: 5♠ ♥-shortness
        • 3♣:
          • 3♥: 5♠ no fit
          • 3♠: 4♠ no fit
          • 3NT: ♣-fit w/o splinter
          • 4♣: ♣-fit ♥ splinter
          • 4♦: ♣-fit ♦ splinter
        • 3♦:
          • 3♥: 5♠ no fit
          • 3♠: 4♠ no fit
          • 3NT: ♦-fit w/o splinter
          • 4♣: ♦-fit ♥ splinter
          • 4♦: ♦-fit ♣ splinter
        • 3♥: 5(+)♥ no ♠-fit
          • 3♠: no ♥-fit
          • 3NT: ♥-fit w/o splinter
          • 4♣: ♥-fit splinter
          • 4♦: ♥-fit splinter
        • 3♠: 3crd ♠ ♥-shortness; likely 31(54)
      • 2NT: 9+; 4♠ balanced
        • 3♣: relay
          • 3♦: 4♦-4♠
          • 3♥: 4♣-4♠
          • 3NT: exactly 4333; 9-11
          • 4♣: exactly 4333; 12-14
          • 4♦: exactly 4333;15-17
        • 3♠: 5(+)♣
      • 3♣: 9+; 4♠-5♣
        • 3♠: 5(+)♦
      • 3♦: 9+; 4♠-5♦
        • 3♠: 5(+)♣
    • 2♥: 16-18 5♣-4♥
      • 2♠: 5(+)♠ forcing
      • 2NT: forces 3♣; to play 3♣/♦ or F3N/4♣; denies 5♠ unless 4♥
        • 3♣: forced
          • 3♦: to play
          • 3♥: natural slam try
          • 3♠: natural slam try
          • 3NT: asks ♦-stop
      • 3♦: 4♠-5♦ FG
      • 4♣: RKCB3041 ♣
      • 4♦: RKCB3041 ♥
      • 4NT: RKCB3041 ♠
    • 2♠: 4crd ♠ value of 14-16
      • 2NT: relay
        • 3♣: 5♣-4♠ some splinter
          • 3♦: asks shortness
            • 3♥: ♦-splinter
            • 3♠: ♥-splinter
        • 3♦: exactly 4414
        • 3♥: balanced
        • 3♠: exactly 2425
        • 3NT: exactly 2425 with A or K in doubletons
        • 4♦: void
        • 4♥: void
      • 3♣: ♣-shortness GI (seldom slam try)
      • 3♦: ♦-shortness GI (seldom slam try)
      • 3♥: ♥-shortness GI (seldom slam try)
      • 4♣: void
      • 4♥: void
    • 2NT: 16-18 6(+)♣ with 3crd ♠ or 4crd ♠ ♦-splinter value of 17-18
      • 3♣: p/c
      • 3♦: strong relay
        • 3♥: 16-18 6(+)♣ with 3crd ♠; ♥-stopper
        • 3♠: 4crd ♠ ♦-splinter value of 17-18
        • 3NT: 16-18 6(+)♣ with 3crd ♥; ♦-stopper
    • 3♣: 16-18 6(+)♣ denies 3crd ♠
    • 3♦: 19+ 4(+)♠
      • 3♥: 6-8; splinter
      • 3♠: 9+; 4♥ balanced
        • 3NT: non-serious
      • 3NT: 6-8; no splinter
      • 4♣: 6-8; splinter
      • 4♦: 6-8; splinter
    • 3♥: 4crd ♠ ♥-splinter value of 17-18
      • 3NT: non-serious slam try
      • 4♣: serious ♣-que (A or K)
      • 4♦: serious ♦-que
      • 4♥: serious ♥-que
    • 3♠: 4crd ♥ no splinter value of 17-18
    • 3NT: based upon long good ♣
    • 4♣: FG raise without splinter (not strong variant)
    • 4♦: FG splinter bid (not strong variant)
    • 4♥: FG splinter bid (not strong variant)
    • 4♠: distributional raise with points in ♣ and ♥
  • 1NT: 10+ 4+♦; denies 4M promises a rebid except over 2♣
    • 2♣: 12-14 5+♣ or 4414
      • 2♦: nonforcing
        • 2♥: stopper
        • 2♠: stopper
      • 2♥: stopper
      • 2♠: stopper
      • 2NT: nonforcing
      • 3♣: forcing
      • 3♦: forcing
      • 3♥: splinter
      • 3♠: splinter
    • 2♦: 19+ 4(+)♥
      • 2♥: unbalanced 5+♦ 3crd ♥
        • 2♠: natural
        • 2NT: punt
      • 2♠: unbalanced 5+D 3crd ♠ max dozubleton ♥
        • 2NT: punt
      • 2NT: 5♦-3-3-2 or exactly 2254
        • 3♣: relay
          • 3♦: exactly 3352
          • 3♥: exactly 3253
          • 3♠: exactly 2353
          • 3NT: exactly 2254
      • 3♣: 6(+)♦ no 3crd M
        • 3♦: 4+♦
        • 3♥: 6(+)♥
        • 3♠: 6(+)♠
      • 3♦: 5-5 minors
      • 3♥: 10/11 exactly 3343
      • 3♠: 11/12 exactly 3343
      • 3NT: 16/17 exactly 3343
    • 2♥: 15+ stopper 4+♣
    • 2♠: 15+ stopper 4+♣
    • 2NT: 15-18 balanced
    • 3♣: 16-18 good 6crd ♣; no ♦-fit
    • 3♦: 15+ good ♦-fit no splinter
    • 3♥: 15+ good ♦-fit splinter
    • 3♠: 15+ good ♦-fit splinter
  • 2♣: 10+ 4+♣ denies 4M promises a rebid except over 3♣
    • 2♦: 19+ 4(+)♥
      • 2♥: unbalanced 5+♣ 3crd ♥
        • 2♠: natural
        • 2NT: punt
      • 2♠: unbalanced 5+C 3crd ♠ max dozubleton ♥
        • 2NT: punt
      • 2NT: 5♣-3-3-2 or exactly 2245
        • 3♣: relay
          • 3♦: exactly 3325
          • 3♥: exactly 3235
          • 3♠: exactly 2335
          • 3NT: exactly 2254
      • 3♣: 6(+)♣ no 3crd M
        • 3♦: 4+♣
        • 3♥: 6(+)♥
        • 3♠: 6(+)♠
      • 3♦: (32)44
      • 3♥: 10/11 exactly 3343
      • 3♠: 11/12 exactly 3343
      • 3NT: 16/17 exactly 3343
    • 2♥: 15+ stopper 4+♣
    • 2♠: 15+ stopper 4+♣
    • 2NT: 15-18 balanced
    • 3♣: 12-14 5+♣ or 4414
    • 3♥: 15+ splinter
    • 3♠: 15+ splinter
    • 3NT: 15+ ♦-splinter
  • 2♦: 6-9 5♣-4/5♦
    • 2♥: asks strength and stoppers
      • 2♠: minimum ♠-stopper
      • 2NT: minimum ♥-stopper
      • 3♣: minimum no M-stopper
      • 3♦: maximum no M-stopper
      • 3♥: maximum stopper
      • 3♠: maximum stopper
      • 3NT: maximum both M-stoppers
    • 2♠: 19+
      • 2NT: exactly 2245
      • 3♣: exactly 1345
      • 3♦: exactly 3145
      • 3NT: exactly (21)55
  • 2♥: 4-7 decent 6crd
    • 2♠: 19+ natural
    • 2NT: relay
      • 3♣: values not ♥A
      • 3♦: values not ♥A
      • 3♥: good suit but not ♥A
      • 3♠: values not ♥A
      • 3NT: A6th
      • 4♣: A7th splinter
      • 4♦: A7th splinter
      • 4♥: A7th ♠-splinter or no splinter
    • 3♣: 19+ natural
    • 3♦: 19+ natural
  • 2♠: 4-7 decent 6crd
    • 2NT: relay
      • 3♣: values not ♠A
      • 3♦: values not ♠A
      • 3♥: good suit but not ♠A
      • 3♠: values not ♠A
      • 3NT: A6th
      • 4♣: A7th splinter
      • 4♦: A7th splinter
      • 4♥: A7th splinter
      • 4♠: A7th no splinter
    • 3♣: 19+ natural
    • 3♦: 19+ natural
    • 3♥: 19+ natural
  • 2NT: 13-15/18+ balanced not 4M
    • 3♣: natural ♣ stopper ask
    • 3♦: 19+ relay
      • 3♥: 13-15 exactly 3334
      • 3♠: 13-15 exactly 3343
      • 3NT: 13-15 exactly (32)44
    • 3♥: 19+ natural
    • 3♠: 19+ natural
  • 3♣: 4-7 decent 6crd
    • 3♦: asks stopper
    • 3♥: 19+ natural
    • 3♠: 19+ natural
  • 3♦: 7crd with 2 tops
  • 3♥: 7crd with 2 tops
  • 3♠: 7crd with 2 tops
  • 3NT: 7crd ♣ with 2 tops
• 1♦: 12-18 4+♦ always unbal. ; longer ♣ possible
  • 1♥: longer minor possible
    • 1♠:
      • 1NT: 6-9 semi-balanced
      • 2♣: art. gameforce; standard 4SF by passed hand
        • 2♦: 12-15 5♦-4♠
          • 2NT: ♦ slam try
          • 3♣: 5♥ no ♣-stopper
          • 3♦: 4♥ no ♣-stopper
          • 3♥: natural slam try
          • 3♠: natural slam try
          • 3NT: 5♥ ♣-stopper
          • 4♣: 5♥ to strong for 3N
          • 4♦: 5♥ to strong for 3N ♦-fit
        • 2♥: 12-15 exactly 4144
          • 3♣: natural slam try
          • 3♦: natural slam try
          • 3♥: natural slam try
          • 3♠: natural slam try
        • 2♠: 16-18 5♦-4♠
          • 2NT: ♦ slam try
          • 3♣: 5♥ no ♣-stopper
          • 3♦: 4♥ no ♣-stopper
          • 3♥: natural slam try
          • 3♠: natural slam try
          • 3NT: 5♥ ♣-stopper
          • 4♣: 5♥ to strong for 3N
          • 4♦: 5♥ to strong for 3N ♦-fit
        • 2NT: 16-18 exactly 4144
          • 3♣: natural slam try
          • 3♦: natural slam try
          • 3♥: natural slam try
          • 3♠: natural slam try
        • 3♣: good 6-4
          • 3♦: no ♣-stopper
          • 3♥: natural slam try
          • 3♠: natural slam try
          • 4♣: RKCB3041 ♦
          • 4♦: natural slam try
        • 3♦: exactly 4360 good ♦
          • 3♥: natural slam try
          • 3♠: natural slam try
          • 4♣: RKCB3041 ♦
          • 4♦: natural slam try
        • 3♥: exactly 5260
          • 4♣: RKCB3041 ♥
          • 4♦: RKCB3041 ♦
          • 4NT: RKCB3041 ♠
        • 3♠: 6♦-5♠
          • 4♣: RKCB3041 ♥
          • 4♦: RKCB3041 ♦
          • 4NT: RKCB3041 ♠
      • 3♣: 4♥-5♣ FG
      • 3♦: natural invite
      • 3♥: natural invite
      • 3♠: natural invite
      • 4♣: RKCB3041 ♥
      • 4♦: RKCB3041 ♦
      • 4NT: RKCB3041 ♠
    • 1NT: both minors; with minimum longer ♣
      • 2♣: preference
      • 2♦: preference
      • 2♥: natural constructive
      • 2♠: art. gameforce; natural by passed hand
        • 2NT: 12-15 5♣-4♦
          • 3♣: 4♥ no ♠-stopper or ♣ slam try
          • 3♦: natural slam try
          • 3♥: natural slam try
          • 3♠: 5♥ no ♠-stopper
          • 3NT: 5♥ ♠-stopper
          • 4♣: 5♥ to strong for 3N ♣-fit
          • 4♦: 5♥ to strong for 3N
        • 3♣: 16-18 5-4 minors 0-2 ♥
          • 3♦: asks longer minor
            • 3♥: 5+♣-4♦
            • 3♠: 5+♦-4♣
          • 3♥: natural slam try
          • 3♠: no ♠-stopper
          • 3NT: 5♥ ♠-stopper
          • 4♣: RKCB3041 ♣
          • 4♦: RKCB3041 ♦
          • 4♠: RKCB3041 ♥
        • 3♦: 16-18 5-4 minors 3crd ♥
          • 3♥: natural slam try
          • 3♠: asks longer minor
            • 4♣: 5+♣-4♦
            • 4♦: 5+♦-4♣
          • 3NT: 5♥ ♠-stopper
          • 4♣: RKCB3041 ♣
          • 4♦: RKCB3041 ♦
          • 4♠: RKCB3041 ♥
      • 3♥: 5-5 FG
        • 3♠: natural slam try
        • 4♣: Q for ♥
        • 4♦: Q for ♥
      • 4♣: RKCB3041 ♣
      • 4♦: RKCB3041 ♦
      • 4♠: RKCB3041 ♥
    • 2♣:
      • 2♥: natural constructive
      • 2♠: art. gameforce; natural by passed hand
        • 2NT: 12-15 5♦-4♣
          • 3♣: 4♥ no ♠-stopper or ♣ slam try
          • 3♦: natural slam try
          • 3♥: natural slam try
          • 3♠: 5♥ no ♠-stopper
          • 3NT: 5♥ ♠-stopper
          • 4♣: 5♥ to strong for 3N
          • 4♦: 5♥ to strong for 3N ♦-fit
        • 3♣: 12-15 5-5+ minors
          • 3♦: asks ♠-stopper
          • 3♥: natural slam try
          • 3♠: ♣ or ♦ slam try
            • 3NT: asks which minor
          • 3NT:
          • 4♦: RKCB3041 ♦
          • 4♠: RKCB3041 ♥
        • 3♦: 12-15 exactly 0355
          • 3♥: natural slam try
          • 3♠: ♣ or ♦ slam try
            • 3NT: asks which minor
          • 3NT: 5♥ ♠-stopper
          • 4♣: RKCB3041 ♣
          • 4♦: RKCB3041 ♦
          • 4♠: RKCB3041 ♥
      • 3♥: 5-5 FG
        • 3♠: natural slam try
        • 4♣: Q for ♥
        • 4♦: Q for ♥
      • 4♣: RKCB3041 ♣
      • 4♦: RKCB3041 ♦
      • 4♠: RKCB3041 ♥
    • 2♦:
      • 2♥: natural constructive
      • 2♠: gameforcing marionette; standard 4SF by passed hand
        • 2NT: usual bid (3m would show ♦ playable opposite small stiff)
          • 3♣: artificial 5♥
            • 3♦: ♣-stopper
            • 3♥: 3crd-fit
            • 3♠: stopper
          • 3♦: 4♥ missing stopper or ♦ slam try
            • 3♥: ♣-stopper
            • 3♠: stopper
          • 3♥: natural slam try
          • 3NT: 5♥ stoppers
          • 4♣: 5♥ to strong for 3N
          • 4♦: 5♥ to strong for 3N ♦-fit
        • 3♣: ♦ playable opposite small stiff; ♥-fit
          • 3♦: ♣-stopper
          • 3♥: natural slam try
          • 3♠: stopper
          • 4♣: RKCB3041 ♦
          • 4♦: ♦ slam try
          • 4♠: RKCB3041 ♥
        • 3♦: ♦ playable opposite small stiff; no ♥-fit
          • 3♥: ♣-stopper
          • 3♠: stopper
          • 4♣: RKCB3041 ♣
          • 4♦: RKCB3041 ♦
          • 4♥: mild slam try
          • 4♠: RKCB3041 ♥
      • 3♣: 4♥-5(+)♣ FG+
        • 3♥: values with ♣-support
        • 3♠: asks stopper
      • 4♦: RKCB3041 ♦
      • 4♠: RKCB3041 ♥
    • 2♥: 4crd ♥ value of 14-16
      • 2♠: relay
        • 2NT: 5♦-4♥ some splinter
          • 3♣: asks shortness
            • 3♦: ♣-splinter
            • 3♥: ♠-splinter
        • 3♣: exactly 4441
        • 3♦: exactly 1444
        • 3♥: exactly 2452
        • 3♠: void
        • 3NT: exactly 2452 with A or K in doubletons
        • 4♣: void
      • 2NT: ♠-shortness GI (seldom slam try)
      • 3♣: ♣-shortness GI (seldom slam try)
      • 3♦: ♦-shortness GI (seldom slam try)
      • 3♠: void
      • 4♣: void
    • 2♠: 4crd ♥ ♠-splinter value of 17-18
      • 3♠: non-serious slam try
      • 3NT: serious ♠-que
      • 4♣: serious ♣-que
      • 4♦: serious ♦-que (A or K)
    • 2NT: 16-18 6(+)♦ with 3crd ♥ or 4crd ♥ ♣-splinter value of 17-18
      • 3♣: strong relay
        • 3♦: 16-18 6(+)♦ with 3crd ♥; ♣-stopper
        • 3♥: 4crd ♥ ♣-splinter value of 17-18
        • 3♠: 16-18 6(+)♦ with 3crd ♥; ♠-stopper
        • 3NT: 16-18 6(+)♦ with 3crd ♥; stoppers
      • 3♦: p/c
    • 3♣: 16-18 5-5 minors or better
    • 3♦: 16-18 6(+)♦ denies 3crd ♥
    • 3♥: 4crd ♥ no splinter value of 17-18
    • 3♠: strong splinter bid
    • 3NT: based upon long good ♦
    • 4♣: strong splinter bid
    • 4♦: FG raise without splinter
    • 4♥: distributional raise with points in ♦ and ♥
  • 1♠: longer minor possible
    • 1NT: both minors; with minimum longer ♣
      • 2♣: preference
      • 2♦: preference
      • 2♥: art. gameforce; natural by passed hand
        • 2♠: 12-15 5♣-4♦
          • 3♣: 4♠ no ♥-stopper or ♣ slam try
          • 3♦: natural slam try
          • 3♥: 5♠ no ♥-stopper
          • 3♠: natural slam try
          • 3NT: 5♠ ♥-stopper
          • 4♣: 5♠ to strong for 3N ♣-fit
          • 4♦: 5♠ to strong for 3N ♦-fit
        • 2NT: 16-18 exactly 1444
          • 3♣: natural slam try
          • 3♦: natural slam try
          • 3♥: natural slam try
          • 3♠: natural slam try
        • 3♣: 16-18 5-4 minors 0-2 ♠
          • 3♦: asks longer minor
            • 3♥: 5+♣-4♦
            • 3♠: 5+♦-4♣
          • 3♥: no ♥-stopper
          • 3♠: natural slam try
          • 3NT: 5♠ ♥-stopper
          • 4♣: RKCB3041 ♣
          • 4♦: RKCB3041 ♦
          • 4NT: RKCB3041 ♠
        • 3♦: 16-18 5-4 minors 3crd ♠
          • 3♥: asks longer minor
            • 4♣: 5+♣-4♦
            • 4♦: 5+♦-4♣
          • 3♠: natural slam try
          • 3NT: 5♠ ♥-stopper
          • 4♣: RKCB3041 ♣
          • 4♦: RKCB3041 ♦
          • 4NT: RKCB3041 ♠
      • 2♠: natural constructive
      • 4♣: RKCB3041 ♣
      • 4♦: RKCB3041 ♦
      • 4NT: RKCB3041 ♠
    • 2♣: 12-15 both minors; longer ♦ or equal length
      • 2♥: art. gameforce;natural by passed hand
        • 2♠: 12-15 5♦-4♣
          • 3♣: 4♠ no ♥-stopper or ♣ slam try
          • 3♦: natural slam try
          • 3♥: 5♠ no ♥-stopper
          • 3♠: natural slam try
          • 3NT: 5♠ ♥-stopper
          • 4♣: 5♠ to strong for 3N ♣-fit
          • 4♦: 5♠ to strong for 3N ♦-fit
        • 2NT: 12-15 exactly 1444
          • 3♣: natural slam try
          • 3♦: natural slam try
          • 3♥: natural slam try
          • 3♠: natural slam try
        • 3♣: 12-15 5-5+ minors
          • 3♦: asks ♥-stopper
          • 3♥: ♣ or ♦ slam try
            • 3NT: asks which minor
          • 3♠: natural slam try
          • 3NT: 5♠ ♥-stopper
          • 4♣: RKCB3041 ♣
          • 4♦: RKCB3041 ♦
          • 4NT: RKCB3041 ♠
        • 3♦: 12-15 exactly 0355
          • 3♥: ♣ or ♦ slam try
            • 3NT: asks which minor
          • 3♠: natural slam try
          • 3NT: 5♠ ♥-stopper
          • 4♣: RKCB3041 ♣
          • 4♦: RKCB3041 ♦
          • 4NT: RKCB3041 ♠
      • 2♠: natural constructive
      • 3♥: 5-5 FG
        • 3♠: natural slam try
        • 4♣: Q for ♥
        • 4♦: Q for ♥
      • 4♣: RKCB3041 ♣
      • 4♦: RKCB3041 ♦
      • 4NT: RKCB3041 ♠
    • 2♦:
      • 2♥: FG or 5♠-4/5♥ GI
        • 2♠: 6(+)♦
          • 2NT: 5♠-4/5♥ GI
          • 3♣: artificial 5♠
            • 3♦: ♣-stopper
            • 3♥: stopper
            • 3♠: 3crd-fit
          • 3♦: 4♠ missing stopper or ♦ slam try
            • 3♥: stopper
            • 3♠: ♣-stopper
          • 3♠: natural slam try
          • 3NT: 5♠ stoppers
          • 4♣: 5♠ to strong for 3N
          • 4♦: 5♠ to strong for 3N ♦-fit
        • 2NT: 12-15 5♦-4♥
          • 3♣: artificial 5♠
            • 3♦: ♣-stopper
            • 3♥: stopper
            • 3♠: 3crd-fit
          • 3♦: 4♠ no ♣-stopper or ♦ slam try
          • 3♥: natural slam try
          • 3♠: natural slam try
          • 3NT: 5♠ stoppers
          • 4♣: 5♠ to strong for 3N
          • 4♦: 5♠ to strong for 3N ♦-fit
        • 3♣: ♦ playable opposite small stiff; ♠-fit
          • 3♦: ♣-stopper
          • 3♥: stopper
          • 3♠: natural slam try
          • 4♣: RKCB3041 ♦
          • 4♦: ♦ slam try
          • 4NT: RKCB3041 ♠
        • 3♦: ♦ playable opposite small stiff; no ♠-fit
          • 3♥: stopper
          • 3♠: ♣-stopper
          • 4♣: RKCB3041 ♣
          • 4♦: RKCB3041 ♦
          • 4♠: mild slam try
          • 4NT: RKCB3041 ♠
      • 2♠: natural constructive
      • 3♣: 4♠-5(+)♣ FG+
        • 3♥: asks stopper
        • 3♠: values with ♣-support
      • 4♦: RKCB3041 ♦
      • 4NT: RKCB3041 ♠
    • 2♥: 16-18 5♦-4♥
      • 2♠: 5(+)♠ forcing
      • 2NT: forces 3♣; to play 3♣/♦ or F3N/4♦; denies 5♠ unless 4♥
        • 3♣: forced
          • 3♦: to play
          • 3♥: natural slam try
          • 3♠: natural slam try
          • 3NT: asks ♣-stop
      • 3♣: 4♠-5♣ FG
      • 4♣: RKCB3041 ♥
      • 4♦: RKCB3041 ♦
      • 4NT: RKCB3041 ♠
    • 2♠: 4crd ♠ value of 14-16
      • 2NT: relay
        • 3♣: 5♦-4♠ some splinter
          • 3♦: asks shortness
            • 3♥: ♥-splinter
            • 3♠: ♣-splinter
        • 3♦: exactly 4441
        • 3♥: exactly 4144
        • 3♠: exactly 4252
        • 3NT: exactly 4252 with A or K in doubletons
        • 4♣: Chicane
        • 4♦: Chicane
        • 4♥: Chicane
      • 3♣: ♣-shortness GI (seldom slam try)
      • 3♦: ♦-shortness GI (seldom slam try)
      • 3♥: ♥-shortness GI (seldom slam try)
    • 2NT: 16-18 6(+)♦ with 3crd ♠ or 4crd ♠ ♣-splinter value of 17-18
      • 3♣: strong relay
        • 3♦: 16-18 6(+)♦ with 3crd ♥; ♣-stopper
        • 3♥: 16-18 6(+)♦ with 3crd ♠; ♥-stopper
        • 3♠: 4crd ♠ ♣-splinter value of 17-18
        • 3NT: 16-18 6(+)♦ with 3crd ♠; stoppers
    • 3♣: 16-18 5-5 minors or better
    • 3♦: 16-18 6(+)♦ denies 3crd ♠
    • 3♥: 4crd ♠ ♥-splinter value of 17-18
      • 3NT: non-serious slam try
      • 4♣: serious ♣-que
      • 4♦: serious ♦-que (A or K)
      • 4♥: serious ♥-que
    • 3♠: 4crd ♠ no splinter value of 17-18
    • 3NT: based upon long good ♦
    • 4♣: strong splinter bid
    • 4♦: FG raise without splinter
    • 4♥: strong splinter bid
    • 4♠: distributional raise with points in ♦ and ♥
  • 1NT: 6-9; not 5♦ or 4M
    • 2♣: 12-16 3crd ♣ or 17-18 2+♣; F1
      • 2♦: Regelgebot; ? mit 17-18: 2O/SA Stopper (2SA beide); 3? 5-5 UFs
        • 2♥: 17-18 stopper
        • 2♠: 17-18 stopper
        • 2NT: 17-18 stoppers
        • 3♣: 17-18 5-5 minors
      • 2♥: 8-9 good 5crd ♣ stopper
        • 3♦: max. good ♦ no ♠-stopper
        • 3♥: max. ♣-fit ♠-shortness
        • 3♠: max. ♣-fit ♠-void
      • 2♠: 8-9 good 5crd ♣ stopper
        • 3♦: max. good ♦ no ♥-stopper
        • 3♥: max. ♣-fit ♥-void
        • 3♠: max. ♣-fit ♥-shortness
      • 2NT: 8-9 good 5crd no M-stopper
        • 3♦: max. good ♦ no M-stopper
        • 3♥: max. ♣-fit ♥-shortness
        • 3♠: max. ♣-fit ♠-shortness
      • 3♣: weak long ♣ ♦-shortness
    • 2♥: 17-18 exactly 4441 or 4450
      • 3♥: max. splinter
      • 3♠: max. splinter
    • 2♠: 17-18 5/6♦-4M (unknown)
      • 3♥: max. splinter
      • 3♠: max. splinter
    • 2NT: 12-15 both minors longer ♣ or equal length
    • 3♣: 12-15 both minors longer ♦
    • 3♦: 17-18; 6+♦
    • 3♥: 6♦-5♥; 4-5 losers
    • 3♠: 6♦-5♠; 4-5 losers
  • 2♣: 10+ 4+♣ denies 4M promises a rebid except over 2♦
    • 2♦: minimum
      • 2♥: stopper F3N (may stop in 4m)
      • 2♠: stopper F3N (may stop in 4m)
    • 2♥: non-min. stopper
    • 2♠: non-min. stopper
    • 2NT: non-min.usually 5-5 minors
    • 3♣: max. ♣-support no splinter
    • 3♦: max. good suit no ♣-support
    • 3♥: max. ♣-support splinter
    • 3♠: max. ♣-support splinter
  • 2♦: 10+ 4+♦ denies 4M promises a rebid except over 3♦
    • 2♥: non-min. stopper
    • 2♠: non-min. stopper
    • 2NT: non-min.usually 5-5 minors
    • 3♣: non-min. stopper
    • 3♦: minimum
    • 3♥: max. splinter
    • 3♠: max. splinter
    • 3NT: max. ♣-splinter
  • 2♥: 4-7 6+♥
    • 2NT: asks values
      • 3♥: minimum
  • 2♠: 4-7 6+♠
    • 2NT: asks values
      • 3♠: minimum
  • 2NT: 13-15/18+ bal. denies 4M
    • 3♣: 5-5 minors
    • 3♦: usually ♣-shortness
    • 3♥: ♠-shortness
    • 3♠: ♥-shortness
  • 3♣: 8-9 5(+)♦
    • 3♥: asks ♥-stopper
      • 3♠: denies ♥-stopper
    • 3♠: asks ♠-stopper
    • 3NT: asks ♣-stopper
    • 4♣: strong with both minors
    • 4♦: GI usually short M
    • 4♥: 6♦-5♥; 4-5 losers
    • 4♠: 6♦-5!5; 4-5 losers
  • 3♦: 4-8 4(+)♦
    • 3♥: asks ♥-stopper
      • 3♠: denies ♥-stopper
    • 3♠: asks ♠-stopper
    • 3NT: asks ♣-stopper
    • 4♣: strong with both minors
    • 4♦: GI usually short M
    • 4♥: 6♦-5♥; 4-5 losers
    • 4♠: 6♦-5!5; 4-5 losers
  • 3♥: HHxxxx(+)
  • 3♠: HHxxxx(+)
  • 3NT: HHxxxx(+) in ♣
• 1♥: 10-18 5+♥
  • 1♠: often 5crd always if FG
    • 1NT: 11-16 ♦ or balanced without ♠-fit or 17-18 unbalanced
      • 2♣: marionette weak or FG
        • 2♦: 11-16 5♥-4(+)♦
          • 2♠: weak 5♠-5♣
          • 2NT: FG relay
            • 3♣: exactly 1543
            • 3♦: 5-5
            • 3♥: exactly 1642
            • 3♠: exactly 2641
            • 3NT: exactly 2542
          • 3♣: asks ♣-stopper
          • 3♦: natural slam try
          • 3♥: natural slam try
          • 3♠: natural slam try
        • 2♥: exactly 2533
          • 2NT: asks m-stopper
          • 3♣: natural slam try
          • 3♦: natural slam try
          • 3♥: natural slam try
          • 3♠: natural slam try
        • 2♠: 17-18 3crd ♠ unbalanced
        • 2NT: 17-18 4crd m denies ♠-fit
          • 3♣: pass/correct
          • 3♦: asks minor
            • 3♥: 4crd ♣
            • 3♠: 4crd ♦
          • 3♥: to play
          • 3♠: FG 5+♠
      • 2♦: constructive preference
      • 2♥: constructive preference
      • 2♠: constructive natural
      • 3NT: 14-16 exactly 4144
    • 2♣:
      • 2♦: puppet weak or FG
        • 2♥: forced
          • 2♠: weak 5♠-5♦
          • 2NT: FG relay
            • 3♣: 5-5
            • 3♦: fragment
            • 3♥: exactly 1624
            • 3♠: exactly 2614
            • 3NT: exactly 2524
          • 3♣: natural slam try
          • 3♦: asks ♦-stopper
          • 3♥: natural slam try
          • 3♠: natural slam try
      • 2♥: constructive preference
      • 2♠: constructive natural
      • 3NT: 14-16 exactly 4144
    • 2♦: 11-16 3crd ♠
      • 2NT: FG relay
        • 3♣: minimum
          • 3♦: relay
            • 3♥: no 4crd m
            • 3♠: exactly 3514
            • 3NT: exactly 3541
        • 3♦: some chicane; will show after responder sets trump
        • 3♥: maximum no 4crd m
        • 3♠: maximum exactly 3514
        • 3NT: maximum exactly 3541
      • 3♣: short suit trial
      • 3♦: short suit trial
      • 3NT: 14-16 exactly 4144
      • 4♣: 5♠-4♥ splinter
      • 4♦: 5♠-4♥ splinter
      • 4♥: 5♠-4♥ no splinter
    • 2♥: denies ♠-fit
      • 2NT: natural FG
      • 3♣: natural FG
      • 3♦: natural FG
      • 3NT: 14-16 exactly 4144
      • 4♣: 5♠-3/4♥ splinter
      • 4♦: 5♠-3/4♥ splinter
      • 4♥: 5♠-3/4♥ no splinter
    • 2♠:
      • 2NT: GI
      • 3♣: short suit trial
      • 3♦: short suit trial
      • 4♣: chicane; slam try
      • 4♦: chicane; slam try
    • 2NT: 17-18 semi-balanced
      • 3♣: relay
        • 3♦: exactly 2542
        • 3♥: exactly 2524
        • 3♠: 35(32)
        • 3NT: exactly 2533
    • 4♣: 4crd ♠ splinter
    • 4♦: 4crd ♠ splinter
  • 1NT: 5-13 max 3crd ♥; may have 4crd ♠
    • 2♣: 10-16 not 6(+)♥; not 4(+)♦ or 4+♠ if min. also most 16-18
      • 2♦: 9/10+ 0-2♥ or 11-13 unbalanced 3crd limit raise
        • 2♥: 10-14
          • 2♠: GI 4crd ♠
        • 2♠: 15-16 4505
      • 2♥: weak preference
      • 2♠: 7-9 31(54)
        • 2NT: asks longer minor
      • 2NT: 7-9 both minors
      • 3♣: weak natural
      • 3♦: weak natural
      • 3♥: natural invite
    • 2♦:
      • 2♠: GI 4crd ♠
      • 2NT:
        • 3♣: weak distributional or FG with ♣-stopper
          • 3♦: ♦-preference
            • 3♥: 6♥-4♦
            • 3NT: asks ♠-stopper
          • 3♥: ♥-preference
            • 3NT: asks ♠-stopper
        • 3♦: Strong 5-5
        • 3♥: Strong 6-4
        • 3♠: ♠-Stopper asks ♣-stopper
      • 3♦: mild invite often ♥-shortness
      • 3♥: 3crd limit raise
      • 3♠: good ♦-raise ♠-splinter
      • 3NT: good ♦-raise ♣-splinter
    • 2♠: 15+ natural
      • 2NT: lebensohl (weak in m or ♥ or too strong for 4♠)
        • 3♣: forced
          • 3♦: to play
          • 3♥: to play
          • 3♠: 4crd support too strong for 4♠
          • 3NT: weakness in a minor
      • 3♣: natural invite
      • 3♦: natural invite
      • 3♥: 3crd support too strong for 4♥
      • 3♠: natural invite
      • 4♣: splinter fit in ♥ and ♠ but sets ♠
      • 4♦: splinter fit in ♥ and ♠ but sets ♠
    • 2NT: 17-18 balanced
      • 3♣: weak
      • 3♦: weak
      • 3♥: weak usually 3crd-fit
      • 3♠: 3crd ♥-support too strong for 4♥
      • 4♣: natural slam invite
      • 4♦: natural slam invite
    • 3♣: 5-5 6-5 losers
      • 3♦: stopper
      • 3♠: stopper
      • 4♣: slam try ♣
      • 4♦: slam try ♠
    • 3♦: 5-5 6-5 losers
      • 3♠: stopper
      • 4♣: slam try ♠
      • 4♦: slam try ♦
    • 3♠: 6♥-5♠ max 5 losers
    • 3NT: 6♣-5♥ max 5 losers
    • 4♣: 6♥-5♣ max 5 losers
    • 4♦: 6♥-5♦ max 5 losers
  • 2♣: FG balanced/5+♣/exactly 1444
    • 2♦: any minimum; except most 5-5
      • 2♥: balanced
        • 2♠: 4crd ♠
          • 3♥:
            • 3♠: non-serious
            • 3NT: serious ♠-cue
          • 3♠:
            • 3NT: non-serious
        • 3♠: autosplinter
        • 4♣: autosplinter
        • 4♦: autosplinter
      • 2♠: natural ♣s punt; denies ♥-fit and 4crd ♠
      • 3♣: 5+♣-4♠
        • 3♦: asks ♦-stopper
          • 3♥: no stopper but Hx in ♥
          • 3♠: no stopper
        • 3♠: ♠-fit
          • 3NT: serious ♠-cue
      • 3♦: good 6crd in ♣
      • 3♥: natural slam invite
        • 3NT: non-serious
      • 3♠: minimum splinter bid with 4crd ♥
      • 4♣: minimum exactly 4225
      • 4♦: minimum splinter bid with 4crd ♥
    • 2♥: non-minimum punt (denies 4+♠)
      • 2♠: balanced or exactly 1444
        • 3♠: autosplinter
        • 4♣: autosplinter
        • 4♦: autosplinter
      • 3♣: denies support; stopper ask
        • 3♦: ♦-stopper
        • 3♠: ♠-stopper
      • 3♦: good 6crd in ♣
      • 3♥: natural slam invite
        • 3♠: non-serious
        • 3NT: serious ♠-cue
      • 3♠: minimum 3crd support splinter
      • 4♣: minimum 3crd support no splinter
      • 4♦: minimum 3crd support splinter
    • 2♠: non-minimum 4+♣
      • 2NT: 14-16 balanced
        • 3♣: 5-5
        • 3♦: stopper
        • 3♠: stopper
        • 4♣: autosplinter ♠
        • 4♦: autosplinter
      • 3♣: relay often 17+ balanced
        • 3♦: fragment
        • 3♠: fragment
        • 3NT: exactly 2524
        • 4♣: 6(+)♥; ♠-void
        • 4♦: 6(+)♥; void
        • 4♥: exactly 2524 no control in ♦ and ♠
      • 3♥: ♦-Stopper or 3crd ♥
        • 3♠: no ♠-stopper
          • 3NT: need help in ♠
          • 4♣: mild slam try without ♥-fit
          • 4♦: mild slam try with 3crd ♥
          • 4♥: minimum 3crd support
        • 3NT: ♠-stopper
          • 4♣: mild slam try without ♥-fit
          • 4♦: mild slam try with 3crd ♥
          • 4♥: minimum 3crd support no control in ♦ and ♠
        • 4♣: SE ♣
        • 4♦: RKCB3041 ♣
      • 3♠: ♠-Stopper asks ♣-stopper
        • 4♣: SE ♣
        • 4♦: RKCB3041 ♣
      • 4♣: slam try ♣
      • 4♦: slam try ♥
      • 4♥: minimum 3crd support no control in ♦ and ♠
    • 2NT: natural non-minimum
      • 3♣: denies support; stopper ask
        • 3♦: ♦-stopper
        • 3♠: ♠-stopper
      • 3♦: good 6crd in ♣
      • 3♥: natural slam invite
        • 3♠: non-serious
        • 3NT: serious ♠-cue
      • 3♠: minimum 3crd support splinter
      • 4♣: minimum 3crd support no splinter
      • 4♦: minimum 3crd support splinter
    • 3♣: 4crd ♠ non-minimum
      • 3♦: punt
        • 3♥: 6♥ not a good ♦-Stopper
        • 3♠: no ♦-stopper
        • 4♣: exactly 4513
        • 4♦: exactly 4603
      • 4♣: RKCB3041 ♣
      • 4♦: RKCB3041 ♥
      • 4NT: RKCB3041 ♠
    • 3♦: minimum 5♥-5♦
    • 3♥: non-minimum good suit
      • 4♣: RKCB3041 ♣
    • 3NT: minimum 5♥-5♣
      • 4♣: RKCB3041 ♣
      • 4♦: balanced; forces 4♥
      • 4♠: RKCB3041 ♥
  • 2♦: FG 5+♦
    • 2♥: any minimum; except most 5-5
      • 2♠: punt
      • 3♣: 5+♦-4♠
        • 3♦: asks ♣-stopper
          • 3♥: no stopper but Hx in ♥
          • 3♠: no stopper
        • 3♠: ♠-fit
          • 3NT: ♠-fit non-serious
          • 4♣: ♥-fit serious cue-bid
          • 4♦: ♥-fit serious cue-bid
          • 4♥: ♥-fit serious cue-bid
      • 3♦: good 6crd in ♦
      • 3♥: natural slam invite
        • 3♠: non-serious
        • 3NT: serious ♠-cue
      • 3♠: minimum splinter bid with 4crd ♥
      • 4♣: minimum splinter bid with 4crd ♥
      • 4♦: minimum exactly 2452
    • 2♠: non-minimum punt (denies 4+♥)
      • 3♣: denies support; stopper ask
        • 3♦: ♣-stopper
        • 3♥: ♥-stopper
      • 3♦: good 6crd in ♦
      • 3♥: natural slam invite
        • 3♠: non-serious
        • 3NT: serious ♠-cue
      • 3♠: minimum splinter bid with 4crd ♥
      • 4♣: minimum splinter bid with 4crd ♥
      • 4♦: minimum exactly 2452
    • 2NT: natural non-minimum
      • 3♣: denies support; stopper ask
        • 3♦: ♣-stopper
        • 3♥: ♥-stopper
      • 3♦: good 6crd in ♦
      • 3♥: natural slam invite
        • 3♠: non-serious
        • 3NT: serious ♠-cue
      • 3♠: minimum splinter bid with 4crd ♥
      • 4♣: minimum splinter bid with 4crd ♥
      • 4♦: minimum exactly 2452
    • 3♣: 4crd ♠ non-minimum
      • 3♦: punt
        • 3♥: 6♥ not a good ♣-Stopper
        • 3♠: no ♣-stopper
        • 4♣: exactly 4531
        • 4♦: exactly 4630
      • 4♣: RKCB3041 ♥
      • 4♦: RKCB3041 ♦
      • 4NT: RKCB3041 ♠
    • 3♦: non-minimum 4crd ♦
      • 3♥: ♣-Stopper or 3crd ♥
        • 3♠: no ♠-stopper
          • 3NT: need help in ♠
          • 4♣: mild slam try without ♥-fit
          • 4♦: mild slam try with 3crd ♥
          • 4♠: minimum 3crd support
        • 3NT: ♠-stopper
          • 4♣: mild slam try without ♥-fit
          • 4♦: mild slam try with 3crd ♥
          • 4♠: minimum 3crd support no control in ♣ and ♠
        • 4♣: RKCB3041 ♦
        • 4♦: SE ♦
      • 3♠: ♠-Stopper asks ♣-stopper
        • 4♣: RKCB3041 ♦
        • 4♦: SE ♦
      • 4♣: RKCB3041 ♦
      • 4♦: slam try ♦
      • 4♠: minimum 3crd support no control in ♦ and ♥
    • 3♥: non-minimum good suit
      • 4♦: RKCB3041 ♦
    • 3NT: minimum 5♥-5♣
      • 4♣: natural slam try
      • 4♦: natural slam try
      • 4♠: RKCB3041 ♥
  • 2♥: 8-11 3/4crd support
    • 2♠: asks values
    • 2NT: short suit trial ♠ shortness
    • 3♣: short suit trial
    • 3♦: short suit trial
    • 3♠: slam try; void
    • 3NT: gambling
    • 4♣: slam try; void
    • 4♦: slam try; void
  • 2♠: 4-7 6+♠
    • 2NT: asks values
      • 3♠: minimum
  • 2NT: GI+ 4(+) support
    • 3♣: minimum no void
      • 3♦: relay
        • 3♥: semi-balanced
        • 3♠: ♠-splinter
        • 3NT: 2-suiter
          • 4♣: relay
            • 4♦: ♥-♦
            • 4♥: ♥-♣
        • 4♣: splinter
        • 4♦: splinter
      • 3♠: mild slam try; splinter
      • 4♣: mild slam try; splinter
      • 4♦: mild slam try; splinter
    • 3♦: FG some void
      • 3♥: minimum
        • 3NT: ♠-void
        • 4♣: void
        • 4♦: void
      • 3♠: relay
        • 3NT: ♠-void
        • 4♣: void
        • 4♦: void
      • 3NT: hcp concentration in Ms
      • 4♣: hcp concentration in ♥ and ♣
      • 4♦: hcp concentration in ♥ and ♦
    • 3♥: maximum; semi-balanced
      • 3♠: non-serious
      • 3NT: serious ♠-cue
    • 3♠: maximum; ♠-splinter
    • 3NT: maximum; 2-suiter
      • 4♣: relay
        • 4♦: ♥-♦
        • 4♥: ♥-♣
    • 4♣: maximum; splinter
    • 4♦: maximum; splinter
  • 3♣: GI with good 6crd
  • 3♦: GI with good 6crd
  • 3♥: preemptive raise
  • 3♠: 4crd raise to 4 with some singleton
    • 3NT: asks
      • 4♣: splinter
      • 4♦: splinter
      • 4♥: ♠-splinter
  • 3NT: 4crd raise to 4 with a ♠-void
  • 4♣: 4crd raise to 4 with a void
  • 4♦: 4crd raise to 4 with a void
  • 4♠: RKCB3041
• 1♠: 10-18 5+♠
  • 1NT: 5-13 max 3crd ♠
    • 2♣: 10-16 not 6(+)♠ not 4(+)♦ not 4(+)♥ also most 16-18
      • 2♦: 9/10+ 0-2♠ or 11-13 unbalanced 3crd limit raise
        • 2♥: 10-16 3crd ♥
        • 2♠: 10-14 max doubleton ♥
      • 2♥: 7-9 6(+) or 5crd with singleton ♠
      • 2♠: 7-9 31(54)
        • 2NT: asks longer minor
      • 2NT: 7-9 both minors
      • 3♣: weak natural
      • 3♦: weak natural
      • 3♥: natural invite
      • 3♠: balanced 3crd limit raise
    • 2♦:
      • 2NT: natural invite
        • 3♣: weak distributional or FG with ♣-stopper
          • 3♦: ♦-preference
            • 3♠: 6♠-4♦
            • 3NT: asks ♥-stopper
          • 3♠: ♠-preference
            • 3NT: asks ♥-stopper
        • 3♦: Strong 5-5
        • 3♥: ♥-Stopper asks ♣-stopper
        • 3♠: Strong 6-4
      • 3♦: mild invite often ♠-shortness
      • 3♥: good ♦-raise splinter
      • 3♠: 3crd limit raise
      • 3NT: good ♦-raise ♣-splinter
    • 2♥:
      • 2NT: natural invite
        • 3♣: weak distributional or FG with ♣-stopper
          • 3♥: ♥-preference
            • 3♠: 6♠-4♥
            • 3NT: asks ♦-stopper
        • 3♦: ♦-Stopper asks ♣-stopper
        • 3♥: Strong 5-5
        • 3♠: Strong 6-4
      • 3♦: good ♥-raise splinter
      • 3♠: 3crd limit raise
      • 3NT: good ♥-raise ♣-splinter
    • 2NT: 17-18 balanced
      • 3♣: weak
      • 3♦: weak
      • 3♥: FG
      • 3♠: weak usually 3crd-fit
      • 4♣: natural slam invite
      • 4♦: natural slam invite
      • 4♥: 3crd ♠-support too strong for 4♠
    • 3♣:
      • 3♦: stopper
      • 3♥: stopper
      • 4♣: slam try ♣
      • 4♦: slam try ♠
    • 3♦: 5-5 6-5 losers
      • 3♥: stopper
      • 4♣: slam try ♠
      • 4♦: slam try ♦
    • 3♥: 5-5 6-5 losers
      • 4♣: slam try ♥
      • 4♦: slam try ♠
    • 3NT: 6♣-5♠ max 5 losers
    • 4♣: 6♠-5♣ max 5 losers
    • 4♦: 6♠-5♦ max 5 losers
    • 4♥: 6♠-5♥ max 5 losers
  • 2♣: FG balanced/5+♣/exactly 1444
    • 2♦: any minimum; except most 5-5
      • 2♥: balanced
        • 2♠: 4crd ♥
          • 3♥:
            • 3♠: non-serious
            • 3NT: serious ♠-cue
          • 3♠:
            • 3NT: non-serious
        • 3♥: 5-5 or better
          • 4♣: cue for ♥
          • 4♦: cue for ♥
        • 4♣: autosplinter
        • 4♦: autosplinter
        • 4♥: autosplinter
      • 2♠: natural ♣s punt; denies ♠-fit and 4crd ♥
      • 3♣: 5+♣-4♥
        • 3♦: asks ♦-stopper
          • 3♥: no stopper
          • 3♠: no stopper but Hx in ♠
        • 3♥: ♥-fit
          • 3♠: non-serious
          • 3NT: serious ♠-cue
      • 3♦: good 6crd in ♣
      • 3♥: exactly 1444
      • 3♠: natural slam invite
        • 3NT: non-serious
      • 4♣: minimum exactly 4225
      • 4♦: minimum splinter bid with 4crd ♠
      • 4♥: minimum splinter bid with 4crd ♠
    • 2♥: non-minimum punt (denies 4+♥)
      • 2♠: balanced
        • 3♥: 5-5 or better
          • 4♣: cue for ♥
          • 4♦: cue for ♥
        • 4♣: autosplinter
        • 4♦: autosplinter
        • 4♥: autosplinter
      • 3♣: denies support; stopper ask
        • 3♦: ♦-stopper
        • 3♥: ♥-stopper
      • 3♦: good 6crd in ♣
      • 3♥: 6♣-5♥
      • 3♠: natural slam invite
        • 3NT: non-serious
      • 4♣: minimum 3crd support no splinter
      • 4♦: minimum 3crd support splinter
      • 4♥: minimum 3crd support splinter
    • 2♠: non-minimum 4+♣
      • 2NT: 14-16 balanced
        • 3♣: 5-5
        • 3♦: stopper
        • 3♥: stopper
        • 4♣: autosplinter ♥
        • 4♦: autosplinter
      • 3♣: relay often 17+ balanced
        • 3♦: fragment
        • 3♥: fragment
        • 3NT: exactly 5224
        • 4♣: 6(+)♠; ♥-void
        • 4♦: 6(+)♠; void
        • 4♥: exactly 5224 no control in ♦ and ♠
      • 3♥: ♦-Stopper or 3crd ♠
        • 3♠: no ♥-stopper
          • 4♣: mild slam try without ♠-fit
          • 4♦: mild slam try with 3crd ♠
          • 4♠: minimum 3crd support
        • 3NT: need help in ♥
          • 4♣: mild slam try without ♠-fit
          • 4♦: mild slam try with 3crd ♠
          • 4♠: minimum 3crd support no control in ♦ and ♥
        • 4♣: SE ♣
        • 4♦: RKCB3041 ♣
      • 3♠: ♥-Stopper asks ♣-stopper
        • 4♣: SE ♣
        • 4♦: RKCB3041 ♣
      • 4♣: slam try ♣
      • 4♦: slam try ♠
      • 4♠: minimum 3crd support no control in ♦ and ♥
    • 2NT: natural non-minimum
      • 3♣: denies support; stopper ask
        • 3♦: ♦-stopper
        • 3♥: ♥-stopper
      • 3♦: good 6crd in ♣
      • 3♥: 6♣-5♥
      • 3♠: natural slam invite
        • 3NT: non-serious
      • 4♣: minimum 3crd support no splinter
      • 4♦: minimum 3crd support splinter
      • 4♥: minimum 3crd support splinter
    • 3♣: 4crd ♥ non-minimum
      • 3♦: punt
        • 3♥: no ♦-stopper
        • 4♣: exactly 5413
        • 4♦: exactly 6403
      • 4♣: RKCB3041 ♣
      • 4♦: RKCB3041 ♥
      • 4NT: RKCB3041 ♠
    • 3♦: minimum 5♠-5♦
    • 3♥: minimum 5♠-5♥
      • 4♦: slam try ♥
    • 3♠: non-minimum good suit
      • 4♣: RKCB3041 ♣
    • 3NT: minimum 5♠-5♣
      • 4♣: RKCB3041 ♣
      • 4♦: balanced; forces 4♠
      • 4NT: RKCB3041 ♠
  • 2♦: FG 5+♦
    • 2♥: any minimum; except most 5-5
      • 2♠: punt
      • 3♣: 5+♦-4♥
        • 3♦: asks ♣-stopper
          • 3♥: no stopper
          • 3♠: no stopper but Hx in ♠
        • 3♥: ♥-fit
          • 3♠: ♥-fit non-serious
          • 3NT: ♥-fit serious ♠-cue
          • 4♣: ♥-fit serious cue-bid
          • 4♦: ♥-fit serious cue-bid
      • 3♦: good 6crd in ♦
      • 3♥: 6♦-5♥
      • 3♠: natural slam invite
        • 3NT: non-serious
      • 4♣: minimum splinter bid with 4crd ♠
      • 4♦: minimum exactly 4252
      • 4♥: minimum splinter bid with 4crd ♠
    • 2♠: non-minimum punt (denies 4+♥)
      • 3♣: denies support; stopper ask
        • 3♦: ♣-stopper
        • 3♥: ♥-stopper
      • 3♦: good 6crd in ♦
      • 3♥: 6♦-5♥
      • 3♠: natural slam invite
        • 3NT: non-serious
      • 4♣: minimum 3crd support splinter
      • 4♦: minimum 3crd support no splinter
      • 4♥: minimum 3crd support splinter
    • 2NT: natural non-minimum
      • 3♣: denies support; stopper ask
        • 3♦: ♣-stopper
        • 3♥: ♥-stopper
      • 3♦: good 6crd in ♦
      • 3♥: 6♦-5♥
      • 3♠: natural slam invite
        • 3NT: non-serious
      • 4♣: minimum 3crd support splinter
      • 4♦: minimum 3crd support no splinter
      • 4♥: minimum 3crd support splinter
    • 3♣: 4crd ♥ non-minimum
      • 3♦: punt
        • 3♥: no ♣-stopper
        • 3♠: 6♠ not a good ♣-Stopper
        • 4♣: exactly 5431
        • 4♦: exactly 6430
      • 4♣: RKCB3041 ♥
      • 4♦: RKCB3041 ♦
      • 4NT: RKCB3041 ♠
    • 3♦: non-minimum 4crd ♦
      • 3♥: ♣-Stopper or 3crd ♠
        • 3♠: no ♥-stopper
          • 3NT: need help in ♥
          • 4♣: mild slam try without ♠-fit
          • 4♦: mild slam try with 3crd ♠
          • 4♠: minimum 3crd support
        • 3NT: ♥-stopper
          • 4♣: mild slam try without ♠-fit
          • 4♦: mild slam try with 3crd ♠
          • 4♠: minimum 3crd support no control in ♣ and ♥
        • 4♣: RKCB3041 ♦
        • 4♦: SE ♦
      • 3♠: ♥S-Stopper asks ♣-stopper
        • 4♣: RKCB3041 ♦
        • 4♦: SE ♦
      • 4♣: RKCB3041 ♦
      • 4♦: slam try ♦
      • 4♠: minimum 3crd support no control in ♣ and ♥
    • 3♥: minimum 5♠-5♥
      • 4♣: ♥ slam try
      • 4♦: natural slam try
    • 3♠: non-minimum good suit
      • 4♦: RKCB3041 ♦
    • 3NT: minimum 5♠-5♣
      • 4♣: natural slam try
      • 4♦: natural slam try
      • 4♥: RKCB3041 ♥
  • 2♥: FG 5+♥
    • 2♠: non-minimum; 4+♥ possible; 3crd ♥ only if bal.
      • 2NT: bal. or 1-suited or 3crd ♠
        • 3♣: punt; denies ♥-fit
          • 3♦: stopper ask
            • 3♥: ♣-stopper
            • 3♠: ♦-stopper
          • 3♥: 1-suited
          • 3♠: 3crd ♠-support
          • 3NT: non-serious
        • 3♦: 3crd ♥-support
          • 3♥: sets ♥
          • 3♠: sets ♠
          • 4♣: 5♥-5C sets ♥
          • 4♦: 5♥-5D sets ♥
        • 3♥: 4crd ♥ support
          • 3♠: non-serious
          • 3NT: serious ♠-cue
        • 3♠: good 6crd
        • 3NT: not interested in ♥
          • 4♣: cue-bid with 3crd ♥-support
          • 4♦: cue-bid with 3crd ♥-support
      • 3♣: natural; denies ♠-fit
        • 3♠: denies ♦-stopper and fit in ♣/♥
        • 4♣: natural slam invite
        • 4♦: RKCB3041 ♣
      • 3♦: natural; denies ♠-fit
        • 3♠: denies ♣-stopper and fit in ♦/♥
        • 4♣: RKCB3041 ♦
        • 4♦: natural slam invite
      • 3♥: minimum good 6crd
      • 3♠: slam try with 4crd fit
        • 3NT: non-serious
      • 3NT: minimum exactly 4522
      • 4♣: minimum 4crd support splinter
      • 4♦: minimum 4crd support splinter
      • 4♠: minimum exactly 4522; no minor suit controls
    • 2NT: punt minimum 3crd ♥ only if balanced
      • 3♣: natural possibly just stopper
      • 3♦: natural possibly just stopper
      • 3♥: good 6crd
      • 3♠: natural slam invite
        • 3NT: non-serious
      • 4♣: minimum 4crd support splinter
      • 4♦: minimum 4crd support splinter
    • 3♣: 53(41)-distribution or maximum with 6♠-3♥
      • 3♦: relay
        • 3♥: minimum 53(14)
          • 3♠: relay
            • 3NT: exactly 5314
              • 4♣: natural slam invite
              • 4♦: RKCB3041 ♥
              • 4♠: sets ♥ and asks ♦-control
              • 4NT: sets ♥ and asks ♠-control
            • 4♣: exactly 5341
              • 4♦: natural slam invite
              • 4♠: RKCB3041 ♥
              • 4NT: sets ♥ and asks ♦-control
              • 5♣: sets ♥ and asks ♠-control
        • 3♠: maximum with 6♠-3♥
          • 3NT: sets ♥
          • 4♣: cue for ♠
          • 4♦: cue for ♠
          • 4♥: cue for ♠
        • 3NT: maximum exactly 5314
          • 4♣: natural slam invite
          • 4♦: RKCB3041 ♥
          • 4♠: sets ♥ and asks ♦-control
          • 4NT: sets ♥ and asks ♠-control
        • 4♣: maximum exactly 5341
          • 4♦: natural slam invite
          • 4♠: RKCB3041 ♥
          • 4NT: sets ♥ and asks ♦-control
          • 5♣: sets ♥ and asks ♠-control
      • 3♥: sets ♥
        • 3♠: non-serious
        • 3NT: serious ♠-cue
      • 3♠: sets ♠
        • 3NT: non-serious
    • 3♦: ♠-m-2-suiter
      • 3♥: relay
        • 3♠: minimum ♠-♣
          • 4♣: slam try ♣
          • 4♦: slam try ♠
          • 4NT: RKCB3041 ♣+♠
        • 3NT: minimum ♠-♦
          • 4♣: slam try ♠
          • 4♦: slam try ♦
          • 4NT: RKCB3041 ♦+♠
        • 4♣: maximum ♠-♣
          • 4♦: RKCB3041 ♣
          • 4♥: RKCB3041 ♠
        • 4♦: maximum ♠-♦
          • 4♥: RKCB3041 ♦
          • 4NT: RKCB3041 ♠
      • 3♠: very good ♥ ♠ tolerance
        • 4♣: cue for ♥
        • 4♦: cue for ♥
      • 4♣: very good ♥ 3/4 ♣
        • 4♦: RKCB3041 ♣
        • 4♠: RKCB3041 ♥
        • 4NT: to play
      • 4♦: very good ♥ 3/4 ♦
        • 4♠: RKCB3041 ♦
        • 4NT: to play
        • 5♣: RKCB3041 ♥
    • 3♥: minimum 6♠-3♥
      • 3NT: Non-serious for ♥
      • 4♦: cue for ♥
    • 3♠: minimum very good suit
    • 3NT: minimum exactly 4522
    • 4♣: minimum 4crd support splinter
    • 4♦: minimum 4crd support splinter
    • 4♥: minimum exactly 4522 no m-control
  • 2♠: 8-11 3/4crd support
    • 2NT: asks values
    • 3♣: short suit trial
    • 3♦: short suit trial
    • 3♥: short suit trial
    • 3♠: GI
    • 3NT: gambling
    • 4♣: slam try; void
    • 4♦: slam try; void
    • 4♥: slam try; void
  • 2NT: GI+ 4(+) support
    • 3♣: minimum no void
      • 3♦: relay
        • 3♥: semi-balanced
        • 3♠: ♥-splinter
        • 3NT: 2-suiter
          • 4♣: relay
            • 4♦: ♥-♦
            • 4♥: ♥-♣
        • 4♣: splinter
        • 4♦: splinter
      • 3♠: mild slam try; ♥-splinter
      • 4♣: mild slam try; splinter
      • 4♦: mild slam try; splinter
    • 3♦: FG some void
      • 3♥: minimum
        • 3NT: ♥-void
        • 4♣: void
        • 4♦: void
      • 3♠: relay
        • 3NT: ♥-void
        • 4♣: void
        • 4♦: void
      • 3NT: hcp concentration in Ms
      • 4♣: hcp concentration in ♠ and ♣
      • 4♦: hcp concentration in ♠ and ♦
    • 3♥: maximum; ♥-splinter
    • 3♠: maximum; semi-balanced
      • 3NT: non-serious
    • 3NT: maximum; 2-suiter
      • 4♣: relay
        • 4♦: ♠-♦
        • 4♥: ♠-♥
        • 4♠: ♠-♣
    • 4♣: maximum; splinter
    • 4♦: maximum; splinter
  • 3♣: GI with good 6crd
  • 3♦: GI with good 6crd
  • 3♥: GI with good 6crd
  • 3♠: preemptive raise
  • 3NT: 4crd raise to 4 with some singleton
    • 4♣: asks
      • 4♦: splinter
      • 4♥: splinter
      • 4♠: ♣-splinter
  • 4♣: 4crd raise to 4 with a void
  • 4♦: 4crd raise to 4 with a void
  • 4♥: 4crd raise to 4 with a void
  • 4NT: RKCB3041
• 1NT: 12-14
  • 2♣: Garbage Stayman
    • 2♦: No 4 card major
      • 2♥: 4 card ♥; no game
        • 2♠: 3♠-2♥
      • 2♠: 5♠-4♥; inv.
      • 2NT: Transfer ♣; weak or strong
        • 3♣: forced
          • Pass: weak
          • 3♦: exactly 4144; slam try
            • 3♥: fit in ♣
            • 3♠: fit in ♦
            • 3NT: fit in ♦ and ♣
          • 3♥: 5♣-4♥ forcing
            • 3NT: Stop in other major
            • 4♣: min. no stop
          • 3♠: 5♣-4♠ forcing
            • 3NT: Stop in other major
            • 4♣: min. no stop
      • 3♣:
      • 3♦: 4144 slam try
        • 3♥: fit in ♣
        • 3♠: fit in ♦
        • 3NT: fit in ♦ and ♣
      • 3♥: 14(53) forcing
        • 3NT: stop in oM
        • 4NT: both m; good Hand; A in other M
      • 3♠: 41(53) forcing
        • 3NT: stop in oM
        • 4NT: both m; good Hand; A in other M
      • 4♥: 6♥-4♠
      • 4♠: 6♠-4♥
    • 2♥: 4 card ♥
      • 2♠: 4 card ♠; weak or inv:
        • 2NT: double ♠
        • 3♣: 2425
        • 3♠: Maximum; 4 card ♠
      • 2NT: Transfer ♣
        • 3♣: forced
          • 3♦: 4414 slam try
            • 3♥: fit in ♣; good hand
            • 3♠: fit in ♦; good hand
            • 3NT: no good hand; to play
          • 3♥: 5♣ 4♥ slam try ♥
          • 3♠: splinter
          • 4♣: splinter
          • 4♦: splinter
      • 3♣: Transfer ♦
        • 3♦: forced
          • 3♥: 4♥ 5♦ slam try ♥
          • 3♠: ♥ fit Splinter
            • 3NT: nonserious
      • 3♦: fit in ♥; forcing
        • 3♥: non minimum
        • 3♠: 4432
        • 3NT: 4333
        • 4♥: min.
      • 3♥: inv.
    • 2♠: 4 card ♠
      • 2NT: Transfer ♣
        • 3♣: forced
          • 3♦: 1444 slam try
            • 3♥: fit in ♣; good hand
            • 3♠: fit in ♦; good hand
            • 3NT: no good hand; to play
      • 3♣: Transfer ♦
        • 3♦: forced
          • 3♥: Splinter; 4 ♠ slam try in ♠
          • 3♠: 5♦ 4♠; slam try in ♠
            • 3NT: nonserious
      • 3♦: fit in ♠; forcing
        • 3♠: non minimum
        • 3NT: 4333
        • 4♠: min.
      • 3♥: splinter; 4 ♠ slam try in ♠
      • 3♠: inv.
  • 2♦: 5 card major inv+
    • 2♥: 2 card ♥
      • 2♠: 5♥ 4♠
        • 2NT: no fit min.
        • 3♣: ♠ fit values
        • 3♦: ♠ fit values
        • 3♠: ♠ fit min
      • 2NT: relay; FG with 5-4Ms or some slam try
        • 3♣: 4♠
          • 3♦: relay slam try
            • 3♥: 5♣
            • 3♠: 5♦
            • 3NT: 42(43)
        • 3♦: 4♣-4♦; 3244;
        • 3♥: 5♣
        • 3♠: 5♦
      • 3♣: GF ; 3514
      • 3♦: GF ; 3541
      • 3♥: 6♥ inv.
      • 3♠: 5 ♠ inv.
      • 3NT: to play
      • 4♣: Splinter; slam try in ♠
      • 4♦: Splinter; slam try in ♠
    • 2♠: 2 card ♠
      • 2NT: relay; SF with M. Or slam try
        • 3♣: 4♥
          • 3♦: relay slam try
            • 3♥: 5♣
            • 3♠: 5♦
            • 3NT: 42(43)
        • 3♦: 4♣-4♦; 3244;
        • 3♥: 5♣
        • 3♠: 5♦
      • 3♣: GF ; 5314
      • 3♦: GF ; 5341
      • 3♥: 5♥ inv.
      • 3♠: 6 ♠ inv.
      • 3NT: to play
      • 4♣: Splinter; slam try in ♥
      • 4♦: Splinter; slam try in ♥
    • 2NT: majors 4-3
      • 3♣: relay maybe slam try
        • 3♦: 4♥
          • 3♥: Aking for minors
            • 3♠: 4 card ♦;
            • 3NT: 4 card ♣;
        • 3♥: No 4 card Minor; (43)33;
          • 3♠: 5-4 M; SE in openers 4 card suit
            • 3NT: 4 card ♥; relay RKC
            • 4♣: 4 card ♠; relay RKC
      • 3♦: M 5-4; no SE
      • 3♥: 5 ♥ inv
      • 3♠: 5 ♠ inv.
      • 3NT: SE for ♠ splinter
        • 4♣: Aking suit
      • 4♣: SE ♥; ♣ Splinter
      • 4♦: SE ♥; ♦ Splinter
    • 3♣: 3-3 or 4-4 M
      • 3♦: relay; forcing
        • 3♥: M 3-3; 4-5 card ♣;
        • 3♠: M 3-3; 4-5 card ♦;
        • 3NT: M 4-4;
      • 3♥: 5 ♥; inv.
      • 3♠: 5 ♠; inv.
      • 3NT: SE for ♠ splinter
        • 4♣: Aking short suit
      • 4♣: SE ♥; ♣ splinter
      • 4♦: SE ♥; ♦ splinter
  • 2♥: to play
  • 2♠: to play
  • 2NT: weak or strong with m
    • 3♣: Longer m or same lenghts
      • 3♦: relay maybe slam try
        • 3♥: m same lenghts
          • 3♠: Aking lenghts
            • 3NT: m 3-3;
            • 4♣: m 4-4;
      • 3♥: 6♦ 5♣; SE
        • 3♠: 4-5 ♦; 3 card ♣
        • 3NT: 4-5 ♣; 3 card ♦
    • 3♦: ♦ lenght
      • 3♥: relay maybe slam try
        • 3♠: 4-5 ♦
        • 3NT: 3 ♦
  • 3♥: 13(54) or 0355
    • 3NT: good stopper in ♠
    • 4♣: m 3-3 ; pass or correct
    • 4♦: 4-5 ♦
    • 4♥: to play
    • 4♠: 4-5 ♣
    • 4NT: M 4-4
    • 5♣: m 3-3 ; pass or correct
  • 3♠: 31(54) or 3055
    • 3NT: good stopper in ♥
    • 4♣: m 3-3 ; pass or correct
    • 4♦: 4-5 ♦
    • 4♥: 4-5 ♣
    • 4♠: to play
    • 4NT: �m 4-4
    • 5♣: m 3-3 ; pass or correct
• 2♣: 6+♦ 8-12 or any strong 2-suiter
  • 2♦: weak relay
    • Pass: 6+♦ 8-12
    • 2♥: 5+ ♥ + second suit; nonforcing
      • 2♠: pass or correct
      • 2NT: GF
      • 3♣: pass or correct
      • 3♦: pass or correct
      • 3♥: inv.
    • 2♠: 5+ ♠ + second suit; nonforcing
      • 2NT: GF
      • 3♣: pass or correct
      • 3♦: pass or correct
      • 3♠: inv.
    • 2NT: minors
      • 3♣: preference
      • 3♦: preference
      • 3♥: stop in ♥
      • 3♠: stop in ♠
      • 3NT: stop in ♥ and ♠ misfit
      • 4♣: to play
    • 3♣: ♣+M
      • 3♦: asking for M
        • 3♥: ♣+♥
          • 3♠: sets ♥
            • 3NT: RKCB
            • 4♣: asks ♠-control
            • 4♦: asks ♦-control
          • 3NT: to play
          • 4♣: non-forcing preference
          • 4♦: sets ♣
            • 4♥: RKCB
            • 4♠: asks ♠-control
            • 4NT: asks ♦-control
          • 4♥: non-forcing preference
        • 3♠: ♣+♠
          • 3NT: to play
          • 4♣: non-forcing preference
          • 4♦: sets ♣
            • 4♥: RKCB
            • 4♠: asks ♠-control
            • 4NT: asks ♥-control
            • 5♦: asks ♦-control
          • 4♥: non-forcing preference
            • 4♠: RKCB
            • 4NT: asks ♠-control
            • 5♣: asks ♣-control
            • 5♦: asks ♦-control
    • 3♦: 5-5 M; GF
      • 3♥: slam try in ♥
      • 3♠: slam try in ♠
      • 3NT: to play
    • 3♥: ♥+♦
      • 3♠: sets ♦
        • 3NT: RKCB
        • 4♣: asks ♣-control
        • 4♥: asks ♥-control
        • 4♠: asks ♠-control
      • 3NT: to play
      • 4♣: sets ♥
        • 4♦: RKCB
        • 4♠: asks ♠-control
        • 4NT: asks ♦-control
        • 5♣: asks ♣-control
      • 4♦: non-forcing preference
      • 4♥: non-forcing preference
    • 3♠: ♠+♦
      • 3NT: to play
      • 4♦: weak; to play
  • 2♥: inv+ opposite opener Intermediate ♦-hand
    • 2♠: 6♦ 8-12
      • 2NT: asking; ogust
        • 3♣: min. no good ♦
        • 3♦: min. good ♦
        • 3♥: max. no good ♦
        • 3♠: max. good ♦
        • 3NT: AKDxxx in ♦
      • 3♣: 6+♥ FG
        • 3♦: ♣-stopper
        • 3♥: Fit; stronger then 4♥
        • 3♠: stopper
      • 3♦: 5♥ GI
      • 3♥: good 6crd GI
    • 2NT: strong 2-suiter
      • 3♣: relay
        • 3♦: 5♦ + 5 M
        • 3♥: 5-5 M; GF
        • 3♠: 5♠ + 5♣
        • 3NT: 5 ♥ + 5 ♣
    • 4♣: 5-5 M
  • 2♠: 5+♠; inv+
    • 2NT: max. no fit
    • 3♣: strong 2-suiter w/o ♠
      • 3♦: relay
        • 3♥: ♣+♥
        • 3♠: ♦+♥
        • 3NT: minors
      • 3♥: majors
      • 3♠: slam try; good 6crd
    • 3♦: min. no fit
    • 3♥: max. fit
    • 3♠: min fit
    • 3NT: AKQxxx no fit
    • 4♣: RKCB ♠ with ♠+♣
    • 4♦: RKCB ♠ with ♠+♦
    • 4♥: RKCB ♠ with ♠+♥
  • 2NT: 5♥ FG
    • 3♣: strong 2-suiter w/o ♥
      • 3♦: relay
        • 3♥: ♣+♠
        • 3♠: ♦+♠
        • 3NT: minors
      • 3♥: slam try; good 6crd
    • 3♦: no fit
    • 3♥: fit
    • 3♠: fit max. with two tops in ♦ or splinter
      • 3NT: relay
        • 4♣: splinter
        • 4♦: two tops in ♦
        • 4♥: ♠-splinter
    • 3NT: AKQxxx no fit
    • 4♣: RKCB ♥ with ♥+♣
    • 4♦: RKCB ♥ with ♥+♦
    • 4♥: RKCB ♥ with ♠+♥
  • 3♣: good suit SI
    • 3♦: no fit
    • 3♥: min fit feature
    • 3♠: min fit feature
    • 3NT: min fit good ♦
    • 4♣: max fit
  • 3♦: preempt opposite intermediate ♦ FG opposite 2-suiter
    • 3♥: ♣+M
      • 3♠: relay
        • 3NT: ♣+♥
        • 4♣: min. ♣+♠
        • 4♦: non-min. ♣+♠
    • 3♠: ♦+M
      • 3NT: relay
        • 4♣: ♦+♥
        • 4♦: min. ♦+♠
        • 4♥: non-min. ♦+♠
    • 3NT: majors
      • 4♣: sets ♥
      • 4♦: sets ♠
    • 4♣: min. minors
    • 4♦: non-min minors
  • 3♥: good 6crd GI
    • 3♠: intermediate ♦ with fit
    • 4♥: intermediate ♦ without fit
• 2♦: weak 2 in ♥ or ♠; 5crd possible
  • 2♥: p/c
    • 2♠: ♠
      • 2NT: relay
        • 3♣: min 5 ♥
        • 3♦: min 6 ♥
        • 3♥: max 5 ♥
        • 3♠: max 6 ♥
      • 3♣: to play
      • 3♦: to play
      • 3♥: to play
      • 3♠: to play
  • 2♠: pass if weak 2 in ♠
    • 2NT: weak 2 in ♥ non-min.
      • 3♣: to play
      • 3♦: to play
      • 3♥: inv.
      • 3♠: to play
      • 4♥: to play
  • 2NT: game forcing if max weak 2
    • 3♣: min with ♥
      • 3♦: asking for lenghts
        • 3♥: 5 ♥
        • 3♠: 6 ♥
    • 3♦: min with ♠
      • 3♥: asking for lenghts
        • 3♠: 5 ♠
        • 3NT: 6 ♠
    • 3♥: non-min. 5+ ♠
      • 3♠: asking for lenghts
        • 3NT: 5 ♠
        • 4♣: 6 ♠ feature
        • 4♦: 6 ♠ feature
        • 4♥: 6 ♠ feature
    • 3♠: 6 ♥ non-min. feauture
    • 3NT: 5 ♥ non-min.
    • 4♣: 6 ♥ non-min. feauture
    • 4♦: 6 ♥ non-min. feauture
  • 3♣: 5+ ♥ inv+
    • 3♦: 0-1 ♥
    • 3♥: 2 ♥
    • 3♠: 3+ ♥;
    • 3NT: 5+ ♥; ♠ splinter
    • 4♣: 5+ ♥; ♣ splinter
    • 4♦: 5+ ♥; ♦ splinter
    • 4♥: 5+ ♥; no splinter
  • 3♦: 5+ ♠ min. inv.
    • 3♥: 0-1 ♠
    • 3♠: 2 ♠
    • 3NT: 3 ♠
    • 4♣: 5+ ♠; ♣ splinter
    • 4♦: 5+ ♠; ♦ splinter
    • 4♥: 5+ ♠;♥ splinter
• 2♥: 4-5 ♠ and 4-5 ♥ 5-10
  • 2♠: to play
  • 2NT: forcing; min. inv
    • 3♣: Min. 5-4/5
      • 3♦: asking
        • 3♥: 5 ♠ 4 ♥
        • 3♠: 5 ♥ 4 ♠
        • 3NT: 5 ♠ 5 ♥
          • 4♣: Slam interested in ♥
          • 4♦: Slam interested in ♠
    • 3♦: M 4-4
      • 3♥: ♥ fit inv.
      • 3♠: ♠ fit inv.
    • 3♥: 5 ♠ 4 ♥; max.
      • 4♣: Slam interested in ♥
      • 4♦: Slam interested in ♠
    • 3♠: 5 ♥ 4 ♠; max.
      • 4♣: Slam interested in ♥
      • 4♦: Slam interested in ♠
  • 3♣: to play
  • 3♦: to play
• 2♠: 6+ ♣ 13-15
  • 2NT: asking for Quality of ♣ and controls
    • 3♣: Max. 1 top ♣
      • 3♦: asking for ♦ control
      • 3♥: asking for ♥ control
      • 3♠: asking for ♠ control
    • 3♦: min. 2 top ♣; no ♦ control
    • 3♥: min. 2 top ♣; no ♥ control
    • 3♠: min. 2 top ♣; no ♠ control
  • 3♣: to play
  • 3♦: 5+ ♥; asking f. Support; min. inv.
    • 3♥: Max. 2 small ♥
    • 3♠: Hx in ♥; Shortness ♠
    • 3NT: Hx in ♥; no splinter
    • 4♣: 7 ♣; 1- ♥
    • 4♦: ♦ splinter; ♥ fit
  • 3♥: 5+ ♠; asking f. Support; min. inv.
    • 3♠: Max. 2 small ♠
    • 3NT: Hx in ♠; no splinter
    • 4♣: fit in ♦
      • 4♦: crosswood; RKC
  • 4♣: preempt.
  • 4♦: crosswood; RKC
• 2NT: 6+ ♣ 10-12
  • 3♣: to play
  • 3♦: asking for ♥ suppot or ♥ stop
    • 3♥: Max. 2♥ no stop
      • 3♠: asking for Help in ♥
        • 3NT: semi stop ♥
    • 4♣: 3♥ no stop
  • 3♥: asking for ♠ suppot or ♠ stop
    • 3♠: Max. 2♠ no stop
      • 3NT: to play
      • 4♥: 5 ♥ 5♠
    • 4♣: 3 ♠ no stop
  • 3NT: stop in M
• 3♣: preempt; 6crd possible; can be very weak
  • 3♦: Forcing 3 ♥: game interest with 5+ ♥ or game interest in ♣; or GF with ♠
    • 3♥: default
      • 3♠: 5+ ♠; GF
        • 3NT: Max 1 ♠
        • 4♣: ♣ as; 3 ♠
        • 4♦: ♦ as; 3 ♠
        • 4♠: 2 ♠
      • 3NT: asking for quality of ♣
        • Pass: 2 tops
        • 4♣: Max 1 top
      • 4♣: inv.
      • 4♦: 5+ ♦; 5+ ♥; inv
      • 4♥: 5+ ♠; 5+ ♥ inv.
    • 3♠: ♥ supp; no good ♣
      • 3NT: PF with ♠
    • 3NT: ♥ supp; good ♣
    • 4♣: 3 ♥ 3♠; no good ♣
  • 3♠:
    • 4♣:
      • 4♦: nat. inv.
  • 4♦: slam interested in ♣; RKC
    • 4♥: no good hand
    • 4♠: 1 Keycard
    • 4NT: 2 Keycard
• 3♦: preempt; 6crd possible; can be very weak
• 3♥: preempt; 6crd possible; can be very weak
• 3♠: preempt; 6crd possible; can be very weak
• 3NT: gambling: solid 7crd w/o side A or K