Link Search Menu Expand Document

Two-way Checkback

1♦-1♥-1♠-?
1♣-1♦-1♥-?
1♣-1♦-1♠-?
1♣-1♥-1♠-?

1♣-1♦-1♥
1♠
nat, nF
1NT
nat, 5-10
2♣
puppet - INV or ♦ s/o
2♦
GF (by passed hand = nat INV)
2♥
7-10, 5+♥ (w/5-6 pass)
2♠
nat GF 5♥ 4♠
2NT
puppet - club s/o or 6♦ 4M 9-10 (sbsq. correction to 3♦ opener raises w/15-16)
3m
5♥ 5m+, INV
3♥
6+♥, INV
1♣-1♥-1♠
1NT
nat, 5-10
2♣
puppet - INV or ♦ s/o
2♦
GF (by passed hand = nat INV)
2♥
7-10, 5♠ 4+♥
2♠
7-10, 5+♠ (w/5-6 pass)
2NT
puppet - club s/o or 6♦ 4M, 9-10 (sbsq. correction to 3♦ opener raises w/15-16)
3x
5♠ 5+x, INV
3♠
6+♠, INV
1♣-1♦-1♠ (5+♣ 4♠)
1NT
5-10
2♣
puppet - INV or ♦ s/o
2♦
GF (by passed hand = nat INV)
2♥
6+♥, 7-10
2♠
5-10
2NT
puppet - club s/o or 6♦ 4M, 9-10 (sbsq. correction to 3♦ opener raises w/15-16)
3m
5♥ 5+m, INV
3♥
6+♥, INV
1♣-1♦-1♥-2♦ and 1♣-1♥-1♠-2♦
2M
3M, bal, 11-13(14)
2NT
2M, bal, 11-13(14) denies 4♠ after partner’s 1♦/4♥ after partner’s 1♥
3rd lvl
unbal, nat, 3M
2♥
(after partner’s 1♥) bal 4♥ and could have 3♠ (lowest first)
2♠
(after partner’s 1♦) bal 4♠ and can’t have 3♥ (lowest first)
1♣-1♦-1♠-2♦
2♥
=4315
2♠
=4225, w/o ♦ stopper
2NT
=4225, w/♦ stopper
3♣
=4126/=4216/=4036/7(+)4
3♦
=4135/=4045
3♠
=4306
1♣-1♦-1♠-1NT
2♣
6+♣ 4♠, retreat from 1NT, 11-14
2♦
=4045, 15-16
2♥
=4315, 15-16
2♠
=4135, 15-16
2NT
=4225, 15-16
3♣
6+♣ 4♠, 15-16
1♣-1♥-1♠-1NT
2♣
6+♣ 3♠, retreat from 1NT, 11-14
2♦
=3145, 15-16
2♥
=2425, 15-16
2♠
=3415, 15-16
2NT
=2245, 15-16
3♣
6+♣ 3♠, 15-16
1♦-1♥-1♠
1NT
5-10
2♣
INV or s/o (opener w/ 17-18 doesn’t accept the puppet)
2♦
GF (by passed hand nat INV)
2♥
6+♥, 5-10
2♠
5-10
2NT
puppet - minor s/o w/9-10 (w/6♣ 4♥ and 5-8 bid 1NT)
3♣
INV, 5♥ 5+♣
3♦
INV, 5♥ 4+♦
3♥
INV, 6+♥
1♦-1♥-1♠-1NT
2♣
15-16, any
2♦
6♦ 4♠, retreat from 1NT, 11-14
2♥
=4351, 17-18
2♠
=4153, 17-18
2NT
=4252, 17-18
3♣
=4153/=4054, 17-18
3♦
6♦ 4♠, 17-18
1♦-1♥-1♠-2♣
2♦
11-16
2♥
17-18, =4351/=4360
2♠
17-18, =4252 w/o ♣ stopper
2NT
17-18, =4252 w/♣ stopper
3♣
17-18, =4153/=4054/=4144
3♦
17-18, =4162/=4261/=4063/7(+)4
1♦-1♥-1♠-2♦
2♥
=4351
2♠
=4252 w/o ♣ stopper
2NT
=4252 w/♣ stopper
3♣
=4153/=4054/=4144
3♦
=4162/=4261/=4063/7(+)4
3♥
=4360

After 2♣ Checkback

1♣-1y-1z-2♣

No need to always bid 2♦ – w/ ♦ singleton, correct back to responder’s M at 2nd lvl

After opener follows the 2♣ by 2♦ relay
2M
5+M, INV
2oM
54+, INV
2NT
4M, bal INV
3m
4M 5+m, INV
3M
6+M, bad suit, INV
3NT
5332, 12.5-15

Checkback is off when they interfere

2m
to play
Cue
INV+
2NT
nat INV

Table of contents