Zahájení 1♦

Passed hand bidding
When 2nd hand interferes
When 4th hand interferes

1♦

1M

5+ and 4+M

1NT

bal w/o 4M
4+♦, unbal, 4M possible
5♣332/6♣322 or 5+♣, unbal w/4M

2♣

5-8, (5)6+♣

2♦

5-10, 3(4)♦ including 5-6 or 9-10, 4+♦, offensive raise

2♥

5♠ 4+♥, 5-10

2♠

9-12.5, (5)6+♣

2NT

INV, (2)3+♦

3♣

offensive raise, 7-8, 4+♦

3♦

PRE

3M

SPL

3NT

to play!

4M

to play

1♦-1♥

1♠: 11-18!, 5+♦ 4♠
1NT: 17+, 5+♦ 4+♣ or 17+, 6+♦ 0-2♥
2♣: 11-16, 4+♦ 4+♣
2♦: 11-16, 6+♦ (15-16 must be poor suit)
2♥: 11-14, 3+♥, also w/=4351, 11-14
2♠: nat reverse, 19+
2NT: 15+, 6+♦ 3♥ or 5+♦ 4♥
3♣: 15-16, 5♦ 5♣ (good texture)
3♦: 15-16, good 6+♦ 0-2♥
3♥: 17-18, 4♥
3♠: GF, SPL
3NT: to play
4♣: GF, SPL
4♦: GF, 4♥ w/(almost) solid 6+♦

1♦-1♠

1NT: 17+, 5♦ 4♣ or 17+ 6+♦ 0-2♠
2♣: 11-16, 4+♦ 4+♣
2♦: 11-16, 6+♦ (or 5♦ 4♥), must have 5♦ or poor 6-suit w/15-16
2♥: nat reverse
2♠: 11-13(14), 3+♠
2NT: 15+, 6+♦3♠ or 5+♦ 4♠
3♣: 15-16, 5♦ 5♣(good texture)
3♦: 15-16, good 6+♦ 0-2♠
3♥: SPL, INV+
3♠: 17-18, 5+♦ 4♠, no ♥ shortness
3NT: to play
4♣: SPL
4♥: SPL

1♦-1M-1NT

2♣: GF ASK
2♦: 5-6, to play
2M: 5-6, 6+M
2NT: 5-6, no other suitable call
3NT: to play

1♦-1M-1NT-2♣

2♦: 6322 w/o 3M or 7222
2M: 5♦ 4♣ w/3M
2NT: 5♦ 4♣ w/o 3M
3♣: 5♦ 5♣
3♦: 6+♦ w/♣ shortness
3M: 6+♦ w/M shortness

1♦-1M-2♣

2♦: (5)7-10, correction (opener sbsq. bids w/15-16)
2oM: GF
2M: 5-10, 6+M
2NT: nat INV
3♣: 9-10
3♦: nat INV
3♥: INV, 5♠ 5♥
3M: nat INV

1♦-1♥-2♦

2♥: 5-10, 6+♥
2♠: GF
2NT: nat INV
3♦: 9-10
3♣: nat INV

1♦-1♠-2♦ (!!)

2♥: 5♠ 4+♥, INV
2♠: 5-10, 6+♠
2NT: nat INV
3♣: GF
3♦: 9-10
3♠: nat INV, 6+♠

1♦-1M-2M

2♠: nat INV+
2NT: ASK
3♣, 3♥: shortness, INV+, 5+M
3♦: nF
3M: 6+M, tactical

1♦-1M-2M-2NT

3♣: not accepting the INV, only 3M, 5♦ 4+♣
3♦: not accepting the INV, only 3M, w/o 4+♣
3M: not accepting the INV, 4M
3NT: accepting the INV, only 3M
4M: accepting the INV, 4M

1♦-1♠-2♥

2♠: 5+♠, 5-6
2NT: mini-Lebensohl, minor s/o / support, 5-6 / GF w/5♠ /bal w/♣ stopper
3m: nat GF
3♥: nat GF
3♠: GF, 6+♠
3NT: bal w/o ♣ stopper

1♦-1♥-2♠

2NT: ASK for shape
3♣: 6+♣
3♦: nat
3♥: 6+♥ (then everything other than 3NT & 4♥ for hearts)
3♠: extras
4♠: fast arrival

1♦-1♥-2♠-2NT

3♣: 3+♣
3♦: 6+♦
3♥: 3♥
3♠: =4252 w/o ♣ stopper
3NT: =4252 w/♣ stopper

1♦-1M-2NT

3♣: INV+ ASK (3♦/3M min, 3NT/4M max, other 3rd lvl GBS, 4th control for M)
3♦: only 4M, 5-6
3M: 5M, 5-6
3oM: control for M
3NT: to play
4♣: control for M
4♦: S/T
4M: 5+M, 7+, to play

Continuation after sequences like 1♦-1M-3m: GBS, stoppers from lowest, M rebid shows 5+M GF

1♦-1NT

2♣: 11-16, waiting
2♦: 17+, 6+♦, 0-1♣
2M: 17+, 5+♦, 4M
2NT: 17+, 6+♦, 2♣
3♣: 17+, 6+♦, 3+♣
3♦: 17+, 7+♦, AKQJxxx or better, exactly one control outside
3M: 17+, 5+♦, 4+♣, 0-1M
3NT: 17+, =2254

1♦-1NT-2♣

2♦: GF (3)4+♦, may be M4 or good diamond support w/longer clubs too
2M: 5+♣ 4M, GF (sbsq: 2♠ nat, 2NT extras w/o support, 3M, 4M support (Fast Arrival), 3♣ extras, support)
2NT: bal, w/o M4 (sbsq: 3NT no extras, 3x nat, extras)
3♣: 6+♣ or 5♣332, GF (sbsq: 3♦ 0-2♣, 3M and 3NT 3+♣ GBS)
3M: SPL w/singleton
3NT: bal (formerly club splinter, removed for sanity)

1♦-1NT-2♣-2♦

2M

nat, subsequently:

2♠: nat,
2NT: extras w/o M4,
3M/4M: support (Fast Arrival)
3♣: nat, 5+♣, w/extras,
3NT: w/o extras, no 4♠ after 2♥

2NT

54+ minors w/extras

3♣

nat, 54+ w/o extras

3♦

6+♦, w/extras

3M

SPL

3NT

6+♦, w/o extras

1♦-2♣

2♦: to play
2M: nat, INV+
2NT: 5+♦ 4+♣, INV
3♣: tactical
3♦: 6+♦, INV
3M: lowest stopper
3NT: to play

1♦-2♦

2NT: ASK, 15+
3♣: 11-14, 5♦ 4♣+
3♦: tactical
3M: SPL, 6+♦, GF
3NT: ♣ SPL, 6+♦, GF

1♦-2♦-2NT

3♣: 7-8
3♦: 5-6
3M: GF, lowest stopper
3NT: 9-10 w/both M stopped

1♦-2♥

pass or 2♠: to play
2NT: ASK, 15-16, 4+♣ or 17-18 any
3♣: 15-16, 6+♦
3♦: 11-14, 6+♦
3M: 15-16 w/support

1♦-2♥-2NT

3♣: 7-8
3♦: 5-6
3♥: 9-10, 5♠ 4♥
3♠: 9-10, 5♠ 5♥
3NT: 9-10, 65MM (4♣ then ask for longer M, responses: 4♦ is ♠, 4♥ shows ♥ or equal)

1♦-2♥-3♣

3♦: 5-8
3♥: 9-10, 5♠ 5♥ (3♠ GBS)
3♠: 9-10, 5♠ 4♥ w/o ♣ stopper
3NT: 9-10, 5♠ 4♥ w/♣ stopper

1♦-2♠

2NT: nat INV
3m: to play
3M: lowest stopper
3NT: to play
4m: slam try in this minor

1♦-3♣

3♦: to play
3M: GF, stoppers from the lowest

Passed hand bidding

p-1♦

1NT: nat INV
2♦: can’t bid 2NT nor 3♣
2M: 4-6 6+M
2NT: INV w/♦
3♣: offensive raise, 7-8, 4+♦, unbal

When 2nd hand interferes

1♦-(X)

XX: (9)11+, PEN
1M: nat
1NT: 7-10
2♣: 7-10, (5)6+♣
2♦: 7-10 w/support
2M: 4-6, 6+M
2NT: nat INV
3♣: GF, 6+♣
3♦: PRE
3NT: to play

1♦-(1♥)

X: TRF ♠
1♠: TRF NT, can be INV or GF minor (sbsq. INV = 2nd lvl, GF = 3rd lvl)
1NT: INV bal
2♣: 7-10, (5)6+♣
2♦: 7-10, 3+♦
2♥: GF, asks for a halfstopper
2♠: 4-6, 6+M
2NT: INV+ w/ diamonds, unbal
3♣: FJ
3♦: PRE
3♥: GF, ♥ shortness
3♠: GF, 6+♠
3NT: to play

1♦-(1♠)

X: 7+, 4+♥
1NT: 7-10
2♣: (5)7-11, (5)6+♣
2♦: 5-10, (3)4+♦
2♥: (5)7-11, (5)6+♥
2♠: GF, primarily ask for stopper
2NT: nat INV
3♣: nat, GF
3♦: 4+♦, PRE
3♥: nat, GF
3♠: SPL

1♦-(1NT)

X: (9)11+ PEN
2♣: 7-10, (5)6+♣
2♦: 7-10, 3+♦
2M: 7-10, (5)6+M
3♦: PRE
3NT: to play (RHO has obviously psyched)

1♦-(2♣ and higher)

X: 7(8/9/10)+ negative
2♦: 7-10 w/support
2M: 7-10, (5)6+M
2NT: nat INV
Cue 3rd lvl: GF, ask for halfstopper
3♦: PRE after 2♣ OVCL, mixed after higher
New suit 3rd lvl: nat, GF
3NT: to play

When 4th hand interferes

1♦-(p)-1M-(X)

XX: 11-16, 3M
Rest: System ON

4th hand overcalls (no jump) on the 2nd lvl after our 1♦-1M

X: support
2NT: 17-18, (semi-)bal w/stopper
Cue: INV+, stopper ask
3M: 15-18 w/support
3NT: 19+ w/stopper