Simulation 8Z21 Main | ![](g/13.gif)
Stayman or Not IV
|
by Richard Pavlicek |
[First read Stayman or Not? and Parts II and III]
What about an almost flat hand (4-4-3-2) when the doubleton consists of two honors? Suppose:
West
| North 1 NT
| East Pass
| South ?
| J 7 4 3
K 5 4
Q J
A 9 7 2 |
Should you use Stayman? Or bid 3 NT directly?
For a simulation I created 10,000 random deals with the South hand fixed. North: 15-17 HCP; balanced; 4-5 spades (if 5 spades, doubleton must be J-x or better). Further, East was constrained not to have any appropriate action (bid or double) over 1 NT; and West not to have extreme shape (freakness 6+) with 7+ playing tricks.
Results are shown below. Trick Average shows the average number of tricks won by declarer. Make Percent shows how often the contract is made (including with overtrick) and Overtrick Percent how often an overtrick is made. The second table compares the bids directly, with the better choice leftmost. Net W-L (matchpoints or board-a-match verdict) counts +1 for a win and -1 for a loss. Net Score and Net IMPs are calculated twice, first with declarer nonvul (green) then with declarer vul (red). Plus values show the net gain over 10,000 deals.
I thought this would be close, but results clearly favor the spade fit, and the edge is certainly great enough to overcome any loss from revealing information to the defenders. While one example hand is hardly proof, it appears that 4-3-3-3 shape is the only justification to eschew Stayman.
Results for 10,000 Deals
Contract | Trick Average | Make Percent | Overtrick Percent
|
---|
3 NT | 9.0023 | 68.33 | 34.30
|
4 ![S](s.gif) | 9.9873 | 72.30 | 27.82 |
Comparison | Net W-L | Net Score | Net IMPs | Net Score | Net IMPs
|
---|
4 vs. 3 NT | +3050 | +322,640 | +9809 | +461,390 | +11,175 |
Actual Deals
Below are 100 of the 10,000 deals, including the first 20, last 20, and 60 in-between with the greatest IMP gains (30 for each option). Numbers after each contract show the tricks won by declarer with double-dummy play all-around.
1. ![](i/lg.gif) | A Q 10 8 6
Q 7
A 8 6
K 10 3
|
K 5 2
A 10 6 3 2
K 10 9
J 6 | ![Table](tx.gif) | 9
J 9 8
7 5 4 3 2
Q 8 5 4
|
3 NT → 11 4 → 11 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
2. ![](i/lg.gif) | A Q 9 2
8 2
A K 4 3
K J 10
|
8 6 5
Q J 10 7 6
10 7 5
8 6 | ![Table](tx.gif) | K 10
A 9 3
9 8 6 2
Q 5 4 3
|
3 NT → 10 4 → 11 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
3. ![](i/lg.gif) | A 8 6 2
A 6
A 10 9
K J 10 5
|
K 10
Q J 10 9 8 3
5 4 2
Q 3 | ![Table](tx.gif) | Q 9 5
7 2
K 8 7 6 3
8 6 4
|
3 NT → 10 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
4. ![](i/lg.gif) | A Q 6 2
A J 8 6
K 7 3
K 8
|
8 5
Q 10 9 7 3
9 2
Q 6 4 3 | ![Table](tx.gif) | K 10 9
2
A 10 8 6 5 4
J 10 5
|
3 NT → 10 4 → 11 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
5. ![](i/lg.gif) | A K 8 5
A 10
10 8 4
K J 10 6
|
J 9 7 2
K 9 5 3 2
Q 8 5 3 | ![Table](tx.gif) | Q 10 9 6 2
Q 8 6 3
A 7 6
4
|
3 NT → 9 4 → 9 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
6. ![](i/lg.gif) | A K 10 9
A 8 3
10 8 4
K Q 6
|
Q 8 5
Q 10 9 7 2
K 6 5
5 3 | ![Table](tx.gif) | 6 2
J 6
A 9 7 3 2
J 10 8 4
|
3 NT → 10 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
7. ![](i/lg.gif) | K Q 10 2
A 10 7 3
A K
J 6 5
|
A 9
Q J 9 8 6
10 9 7 3 2
10 | ![Table](tx.gif) | 8 6 5
2
8 6 5 4
K Q 8 4 3
|
3 NT → 8 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
8. ![](i/lg.gif) | A Q 10 8
A 8 2
A 9 2
Q 5 3
|
K 9 5
Q 9 7 6 3
4
K J 8 4 | ![Table](tx.gif) | 6 2
J 10
K 10 8 7 6 5 3
10 6
|
3 NT → 10 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9. ![](i/lg.gif) | A K Q 2
Q J 9
10 7 5
Q J 3
|
10 9 8
A 8 6 2
A 8
K 8 6 5 | ![Table](tx.gif) | 6 5
10 7 3
K 9 6 4 3 2
10 4
|
3 NT → 9 4 → 9 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
10. ![](i/lg.gif) | A K 8 2
J 6 3
A 7 6
K 4 3
|
10 5
A 2
K 5 4 3 2
Q J 6 5 | ![Table](tx.gif) | Q 9 6
Q 10 9 8 7
10 9 8
10 8
|
3 NT → 8 4 → 9 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
Simulation 8Z21 Main | ![](g/53.gif) | Top Stayman or Not IV |
11. ![](i/lg.gif) | A Q 9 5
A 9
K 7 4 3
Q 5 3
|
K 6
Q J 10 8 7
9 6 5
K 6 4 | ![Table](tx.gif) | 10 8 2
6 3 2
A 10 8 2
J 10 8
|
3 NT → 10 4 → 11 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
12. ![](i/lg.gif) | A K Q 9
Q 3
9 5 4
K Q 8 5
|
10 5
J 9 7 2
K 10 8 6
10 4 3 | ![Table](tx.gif) | 8 6 2
A 10 8 6
A 7 3 2
J 6
|
3 NT → 8 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
13. ![](i/lg.gif) | A Q 9 6 2
Q 6
A 4 3
K J 6
|
10 8
J 9 7
K 7 6 2
8 5 4 3 | ![Table](tx.gif) | K 5
A 10 8 3 2
10 9 8 5
Q 10
|
3 NT → 10 4 → 11 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
14. ![](i/lg.gif) | A K 9 8 6
Q J 6
A 9 3
Q 8
|
10 2
10 9 8 3 2
10 6 4
K 10 4 | ![Table](tx.gif) | Q 5
A 7
K 8 7 5 2
J 6 5 3
|
3 NT → 10 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
15. ![](i/lg.gif) | Q 10 6 2
A J
K 9 6 2
K Q 5
|
K 5
10 8 7 6 2
10 8 7 4 3
4 | ![Table](tx.gif) | A 9 8
Q 9 3
A 5
J 10 8 6 3
|
3 NT → 9 4 → 9 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
16. ![](i/lg.gif) | A Q 10 8
Q J 2
A 6
Q 10 5 3
|
9 6 5
10 9 8 3
10 5 4 3
J 6 | ![Table](tx.gif) | K 2
A 7 6
K 9 8 7 2
K 8 4
|
3 NT → 8 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
17. ![](i/lg.gif) | K 6 5 2
A J
A K 8 3
6 5 3
|
Q 8
Q 9 3
10 9 7 5 2
Q 8 4 | ![Table](tx.gif) | A 10 9
10 8 7 6 2
6 4
K J 10
|
3 NT → 9 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
18. ![](i/lg.gif) | A K 8 5
J 7 3
K 4 3
K J 10
|
10 6
Q 10 8
A 9 8 5 2
6 5 4 | ![Table](tx.gif) | Q 9 2
A 9 6 2
10 7 6
Q 8 3
|
3 NT → 9 4 → 9 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
19. ![](i/lg.gif) | K Q 9 5
A Q 8 6
10 4 3
K J
|
8 2
10 7 3 2
A 8 2
Q 8 4 3 | ![Table](tx.gif) | A 10 6
J 9
K 9 7 6 5
10 6 5
|
3 NT → 8 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
20. ![](i/lg.gif) | K Q 9 2
Q J 7
A 8 6 4
K 4
|
6 5
A 9 6
K 5 3 2
J 10 6 3 | ![Table](tx.gif) | A 10 8
10 8 3 2
10 9 7
Q 8 5
|
3 NT → 9 4 → 11 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
Simulation 8Z21 Main | ![](g/53.gif) | Top Stayman or Not IV |
137. ![](i/lg.gif) | A K Q 5
Q J
7 4 3
Q J 10 4
|
9 6 2
7 6 3
A K 10 9 8 5
K | ![Table](tx.gif) | 10 8
A 10 9 8 2
6 2
8 6 5 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
170. ![](i/lg.gif) | A K Q 2
Q 8 6
9 3
K Q 6 3
|
8 5
A 2
K 10 7 6 5 4
J 10 8 | ![Table](tx.gif) | 10 9 6
J 10 9 7 3
A 8 2
5 4
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
488. ![](i/lg.gif) | 10 8 6 2
A Q 10
A K 9
Q 8 3
|
K
8 6
10 6 4 3 2
K J 6 5 4 | ![Table](tx.gif) | A Q 9 5
J 9 7 3 2
8 7 5
10
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
564. ![](i/lg.gif) | K Q 8 2
A 7
K 9 8
K Q 10 8
|
A 9
2
A 10 7 6 4 3 2
6 5 4 | ![Table](tx.gif) | 10 6 5
Q J 10 9 8 6 3
5
J 3
|
3 NT → 11 4 → 9 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
588. ![](i/lg.gif) | K Q 10 8
Q 7
K 9 7 4
K Q 10
|
A
A J 9 8 3 2
10 6 5 3
J 8 | ![Table](tx.gif) | 9 6 5 2
10 6
A 8 2
6 5 4 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
786. ![](i/lg.gif) | K Q 8 2
A Q 8 7
8 6
K J 6
|
A
10 9 3
A 10 7 5 3 2
Q 5 3 | ![Table](tx.gif) | 10 9 6 5
J 6 2
K 9 4
10 8 4
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
805. ![](i/lg.gif) | A Q 6 2
J 8 6
A 7 5
K J 10
|
K 9
A Q 9 7 3 2
10 8 4 2
8 | ![Table](tx.gif) | 10 8 5
10
K 9 6 3
Q 6 5 4 3
|
3 NT → 10 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
862. ![](i/lg.gif) | A K Q 6
Q 8 7
7 5
K Q J 8
|
8 5
A J
K 10 9 8 4 2
10 5 3 | ![Table](tx.gif) | 10 9 2
10 9 6 3 2
A 6 3
6 4
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
994. ![](i/lg.gif) | A Q 9 6
A 8 2
K 10 5 3
Q 3
|
K 10 8 5 2
Q 9 7
9
K J 10 8 | ![Table](tx.gif) |
J 10 6 3
A 8 7 6 4 2
6 5 4
|
3 NT → 10 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
1091. ![](i/lg.gif) | A K Q 8
Q 10 8
7 4 2
K Q 10
|
6 5
A 9 7 6 2
10 8
J 5 4 3 | ![Table](tx.gif) | 10 9 2
J 3
A K 9 6 5 3
8 6
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
Simulation 8Z21 Main | ![](g/53.gif) | Top Stayman or Not IV |
1191. ![](i/lg.gif) | K Q 9 8
A J 10 9
6 4
K Q J
|
A 10 5 2
8 6 3
K 10 7
10 8 4 | ![Table](tx.gif) | 6
Q 7 2
A 9 8 5 3 2
6 5 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
1223. ![](i/lg.gif) | K Q 10 9
A Q 10 3
10 4
K Q J
|
8 6
9 7
A 9 7 6 5 2
10 8 3 | ![Table](tx.gif) | A 5 2
J 8 6 2
K 8 3
6 5 4
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
1285. ![](i/lg.gif) | K Q 10 8
A Q J 7
5 4
K J 10
|
A 9 5 2
9 8 6 2
A K 2
8 6 | ![Table](tx.gif) | 6
10 3
10 9 8 7 6 3
Q 5 4 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
1293. ![](i/lg.gif) | A K Q 9
Q J 2
K 4 2
6 5 4
|
10 8 2
A 10 9 8 7 6
A 10 9 7
| ![Table](tx.gif) | 6 5
3
8 6 5 3
K Q J 10 8 3
|
3 NT → 9 4 → 6 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
1309. ![](i/lg.gif) | A K Q 9 2
Q J
8 3 2
K J 6
|
10 6 5
10 9 6 3 2
A K
5 4 3 | ![Table](tx.gif) | 8
A 8 7
10 9 7 6 5 4
Q 10 8
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
1365. ![](i/lg.gif) | A Q 5 2
A Q
10 9 8
K 10 8 3
|
K 10 8 6
10
K 5 4 3
Q J 6 5 | ![Table](tx.gif) | 9
J 9 8 7 6 3 2
A 7 6 2
4
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
1399. ![](i/lg.gif) | A 9 8 6
Q 10 6
K 10 5
K Q J
|
Q 2
A 8
A 7 6
10 8 6 5 4 3 | ![Table](tx.gif) | K 10 5
J 9 7 3 2
9 8 4 3 2
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
1410. ![](i/lg.gif) | K 10 8 2
Q J 10
A 8 7 3
K Q
|
5
A 9 7 6 3
10 9 2
J 6 5 4 | ![Table](tx.gif) | A Q 9 6
8 2
K 6 5 4
10 8 3
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
1489. ![](i/lg.gif) | A K 10 9
Q J
A 6 3
Q J 10 8
|
6
A 10 9 8 7 6
7 4 2
K 6 5 | ![Table](tx.gif) | Q 8 5 2
3 2
K 10 9 8 5
4 3
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
1562. ![](i/lg.gif) | A K 10 9 8
A J 7
7 4 3
K 6
|
Q
8 2
A K 10 9 8 5 2
J 5 4 | ![Table](tx.gif) | 6 5 2
Q 10 9 6 3
6
Q 10 8 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
Simulation 8Z21 Main | ![](g/53.gif) | Top Stayman or Not IV |
1565. ![](i/lg.gif) | K Q 9 5
9 7
A K 10 2
K Q 6
|
10 6
A Q J 10 6 3
7 4
8 5 3 | ![Table](tx.gif) | A 8 2
8 2
9 8 6 5 3
J 10 4
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
2296. ![](i/lg.gif) | K Q 10 8
J 7 3
A 9 5
K Q 8
|
A 6 5
9
K 8 3 2
J 10 6 4 3 | ![Table](tx.gif) | 9 2
A Q 10 8 6 2
10 7 6 4
5
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
2303. ![](i/lg.gif) | K Q 10 9 2
Q 3 2
K 6 4
K Q
|
A
A J 10 9 8 7
A 9 5
8 6 5 | ![Table](tx.gif) | 8 6 5
6
10 8 7 3 2
J 10 4 3
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
2687. ![](i/lg.gif) | A K Q 9
Q J 9 2
8 7 5
K Q
|
6 5
A 10 8
K 10 6 4 3 2
J 10 | ![Table](tx.gif) | 10 8 2
7 6 3
A 9
8 6 5 4 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
2769. ![](i/lg.gif) | K Q 10 5
A Q 8
8 4
K J 6 3
|
8 6
9 7
A K 10 9 3 2
Q 10 4 | ![Table](tx.gif) | A 9 2
J 10 6 3 2
7 6 5
8 5
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
2806. ![](i/lg.gif) | K Q 10 2
Q 8
A 8 6
K Q 8 6
|
A 9
J
K 10 9 7 5 2
J 10 5 4 | ![Table](tx.gif) | 8 6 5
A 10 9 7 6 3 2
4 3
3
|
3 NT → 10 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
3041. ![](i/lg.gif) | A Q 9 2
A 6
K 10 9 3
Q 5 3
|
K 10
Q 9 8 7
6
K J 10 8 6 4 | ![Table](tx.gif) | 8 6 5
J 10 3 2
A 8 7 5 4 2
|
3 NT → 10 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
3103. ![](i/lg.gif) | Q 9 8 5
J 3
A K 5 2
K Q J
|
K
A Q 8 7 6
10 3
8 6 5 4 3 | ![Table](tx.gif) | A 10 6 2
10 9 2
9 8 7 6 4
10
|
3 NT → 9 4 → 7 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
3134. ![](i/lg.gif) | A K Q 2
Q J 2
A 6 2
J 6 5
|
8
A 10 9 8 3
9 8 5 3
Q 8 4 | ![Table](tx.gif) | 10 9 6 5
7 6
K 10 7 4
K 10 3
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
3443. ![](i/lg.gif) | A K 6 5
Q J 10 6
K 8 6
Q 8
|
9 2
A
10 9 7 5 4 3
K J 5 4 | ![Table](tx.gif) | Q 10 8
9 8 7 3 2
A 2
10 6 3
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
Simulation 8Z21 Main | ![](g/53.gif) | Top Stayman or Not IV |
3490. ![](i/lg.gif) | A 8 5 2
Q 9 7
A K 7 6
Q 5
|
A 10 2
9 8 5 4 2
K J 8 6 4 | ![Table](tx.gif) | K Q 10 9 6
J 8 6 3
10 3
10 3
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
3699. ![](i/lg.gif) | A K Q 6 5
Q J 9
9 6 3
K 8
|
9
A 10 8 2
A 4
Q J 6 5 4 3 | ![Table](tx.gif) | 10 8 2
7 6 3
K 10 8 7 5 2
10
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
4056. ![](i/lg.gif) | K Q 5 2
A J 10 2
6 3 2
K Q
|
10 9 8
9 8 3
A K
J 10 8 5 4 | ![Table](tx.gif) | A 6
Q 7 6
10 9 8 7 5 4
6 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
4059. ![](i/lg.gif) | K Q 9 2
A 3 2
K 8 4
K J 8
|
10 8
Q J 10 9 8 7
A 10 7 6 2
| ![Table](tx.gif) | A 6 5
6
9 5 3
Q 10 6 5 4 3
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
4110. ![](i/lg.gif) | A Q 9 5
9 7 2
A 8
K Q 10 5
|
K 2
A Q J
10 5 2
J 8 6 4 3 | ![Table](tx.gif) | 10 8 6
10 8 6 3
K 9 7 6 4 3
|
3 NT → 9 4 → 7 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
4487. ![](i/lg.gif) | Q 10 8 5
A J 8
K 8 3 2
K Q
|
A K 9 6 2
9 7 6 2
10
J 10 8 | ![Table](tx.gif) |
Q 10 3
A 9 7 6 5 4
6 5 4 3
|
3 NT → 10 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
4549. ![](i/lg.gif) | A K 9 5
9 3
K 8 4 3
K Q 3
|
Q 10
A Q J 10 8 7
7 5
J 6 5 | ![Table](tx.gif) | 8 6 2
6 2
A 10 9 6 2
10 8 4
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
4663. ![](i/lg.gif) | A K Q 10 2
Q 6
9 7 3
K Q 5
|
9 8
9 3 2
A K 10 6 5 2
J 4 | ![Table](tx.gif) | 6 5
A J 10 8 7
8 4
10 8 6 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
5318. ![](i/lg.gif) | A K Q 2
A 8 7 3
8 5
K J 4
|
10 8
Q J 10 9 6 2
A 4
Q 10 6 | ![Table](tx.gif) | 9 6 5
K 10 9 7 6 3 2
8 5 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
5520. ![](i/lg.gif) | A K 8 2
A J 8
10 9 8 7
Q J
|
9
Q 10 7 6 3 2
5 4 3
K 10 3 | ![Table](tx.gif) | Q 10 6 5
9
A K 6 2
8 6 5 4
|
3 NT → 10 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
Simulation 8Z21 Main | ![](g/53.gif) | Top Stayman or Not IV |
5734. ![](i/lg.gif) | A K 10 6 2
Q 9 8
K 9 5
K 3
|
9 5
A J 10 7 3 2
A
Q 10 6 5 | ![Table](tx.gif) | Q 8
6
10 8 7 6 4 3 2
J 8 4
|
3 NT → 10 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
5848. ![](i/lg.gif) | A Q 10 5
Q 6 2
K 10 7 2
K J
|
K 2
8
A 9 8 6 5 4
10 6 4 3 | ![Table](tx.gif) | 9 8 6
A J 10 9 7 3
3
Q 8 5
|
3 NT → 11 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
6026. ![](i/lg.gif) | K 9 8 6
A Q 7
K 5 3
K 10 5
|
A 10
J 10 8 6 3 2
A 8 2
8 6 | ![Table](tx.gif) | Q 5 2
9
10 9 7 6 4
Q J 4 3
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
6058. ![](i/lg.gif) | K Q 8 6
A Q 10
10 8
K J 8 6
|
A 10 5 2
9 8 7 2
K 9 4
10 4 | ![Table](tx.gif) | 9
J 6 3
A 7 6 5 3 2
Q 5 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
6463. ![](i/lg.gif) | K Q 6 5
A J 10
7 6
K Q 4 3
|
10 8
7 6
K 10 8 4 3 2
8 6 5 | ![Table](tx.gif) | A 9 2
Q 9 8 3 2
A 9 5
J 10
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
6947. ![](i/lg.gif) | K Q 6 5
Q 10 2
A 10 4
K Q 4
|
A 9 7 6
8 7 6 5
J 10 8 5 3 | ![Table](tx.gif) | A 10 9 8 2
J 8 3
K 9 3 2
6
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
7147. ![](i/lg.gif) | A K Q 6
8 6 3
A K 10
J 8 6
|
9 8
A J
8 7 6
K Q 10 5 4 3 | ![Table](tx.gif) | 10 5 2
Q 10 9 7 2
9 5 4 3 2
|
3 NT → 10 4 → 7 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
7296. ![](i/lg.gif) | A Q 10 2
A J 9
8 2
K J 10 4
|
K
Q 7 2
A 10 7 6 5 4 3
8 6 | ![Table](tx.gif) | 9 8 6 5
10 8 6 3
K 9
Q 5 3
|
3 NT → 6 4 → 11 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
7310. ![](i/lg.gif) | A K Q 6 5
Q J 6
6 3 2
K 8
|
A 10 9 7
A 10 8 7 5 4
J 6 5 | ![Table](tx.gif) | 10 9 8 2
8 3 2
K 9
Q 10 4 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
7538. ![](i/lg.gif) | A K 6 2
Q 3
K 8 4 2
K 8 5
|
J 10 8 7 6
10 7 6 5 3
10 6 4 | ![Table](tx.gif) | Q 10 9 8 5
A 9 2
A 9
Q J 3
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
Simulation 8Z21 Main | ![](g/53.gif) | Top Stayman or Not IV |
8180. ![](i/lg.gif) | A K 10 8 2
Q J 3
K 7 5
Q 10
|
9 5
6
A 10 9 6 4 3 2
K J 5 | ![Table](tx.gif) | Q 6
A 10 9 8 7 2
8
8 6 4 3
|
3 NT → 10 4 → 6 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
8192. ![](i/lg.gif) | K Q 9 6 2
A Q 9
6 4 3
K J
|
10 5
10 8 6
A K 10 9 5 2
8 5 | ![Table](tx.gif) | A 8
J 7 3 2
8 7
Q 10 6 4 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
8193. ![](i/lg.gif) | A Q 10 8
A 9
7 5 3
K Q J 10
|
9 2
10 2
A K 10 8 6 4 2
8 4 | ![Table](tx.gif) | K 6 5
Q J 8 7 6 3
9
6 5 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
8501. ![](i/lg.gif) | A 9 5 2
A Q 9
8 5
K Q 10 8
|
K Q
3 2
K 10 9 7 6 4 3
J 6 | ![Table](tx.gif) | 10 8 6
J 10 8 7 6
A 2
5 4 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
8883. ![](i/lg.gif) | A K Q 9
8 3
6 4 2
K Q J 3
|
10
10 9 7
A K 9 8 7 5 3
6 5 | ![Table](tx.gif) | 8 6 5 2
A Q J 6 2
10
10 8 4
|
3 NT → 5 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
8957. ![](i/lg.gif) | K Q 8 6
Q 10 7 3
K 4 2
K Q
|
A 2
J 9 8 6 2
A 9 5
10 8 6 | ![Table](tx.gif) | 10 9 5
A
10 8 7 6 3
J 5 4 3
|
3 NT → 10 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9324. ![](i/lg.gif) | K Q 9 2
6 2
A K 4 3
K 6 4
|
8 5
A Q J 10 8 3
10 6 2
8 5 | ![Table](tx.gif) | A 10 6
9 7
9 8 7 5
Q J 10 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9344. ![](i/lg.gif) | K Q 10 8
Q 9 8 2
K 10 8
K Q
|
9 2
A J 10 6 3
A 9 6
J 4 3 | ![Table](tx.gif) | A 6 5
7
7 5 4 3 2
10 8 6 5
|
3 NT → 9 4 → 8 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9892. ![](i/lg.gif) | A K Q 9
Q 7
6 3 2
K Q 8 3
|
8 6
10 2
A 9 8 7 5 4
J 6 5 | ![Table](tx.gif) | 10 5 2
A J 9 8 6 3
K 10
10 4
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9896. ![](i/lg.gif) | A Q 10 5
9 6
A 8 5 3
K Q 8
|
8 2
A Q J 10 7 2
K 10 4
6 4 | ![Table](tx.gif) | K 9 6
8 3
9 7 6 2
J 10 5 3
|
3 NT → 6 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
Simulation 8Z21 Main | ![](g/53.gif) | Top Stayman or Not IV |
9981. ![](i/lg.gif) | K Q 9 6 5
A 10
K 9 4
K 8 6
|
A 8 2
Q 8 6
10 8 6 3
Q 10 3 | ![Table](tx.gif) | 10
J 9 7 3 2
A 7 5 2
J 5 4
|
3 NT → 9 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9982. ![](i/lg.gif) | A K 5 2
A 10
K 7 3 2
Q 5 3
|
Q 9 8 6
Q J 6 3 2
5
J 10 6 | ![Table](tx.gif) | 10
9 8 7
A 10 9 8 6 4
K 8 4
|
3 NT → 8 4 → 9 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9983. ![](i/lg.gif) | K Q 10 5
A 10
K 10 8
Q J 8 3
|
A 2
Q J 9 7 3
7 3
K 10 5 4 | ![Table](tx.gif) | 9 8 6
8 6 2
A 9 6 5 4 2
6
|
3 NT → 8 4 → 9 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9984. ![](i/lg.gif) | K Q 10 6
A Q 9 3
A 10 3
Q 5
|
A 5
J 8 7 6
K 8 5 2
K J 8 | ![Table](tx.gif) | 9 8 2
10 2
9 7 6 4
10 6 4 3
|
3 NT → 11 4 → 11 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9985. ![](i/lg.gif) | A Q 8 6
A Q 7
7 6 2
K J 8
|
K 5
10 9 6
A K 10 8 3
Q 6 3 | ![Table](tx.gif) | 10 9 2
J 8 3 2
9 5 4
10 5 4
|
3 NT → 8 4 → 11 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9986. ![](i/lg.gif) | A K 8 6 5
A J 2
K 2
J 6 5
|
Q 10
10 8 7 6
9 8 6 5 3
4 3 | ![Table](tx.gif) | 9 2
Q 9 3
A 10 7 4
K Q 10 8
|
3 NT → 9 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9987. ![](i/lg.gif) | K Q 8 5
6 2
A K 7 4
K 6 5
|
9 6 2
A J 10
9 8 5 2
Q 10 3 | ![Table](tx.gif) | A 10
Q 9 8 7 3
10 6 3
J 8 4
|
3 NT → 7 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9988. ![](i/lg.gif) | A K Q 8 6
J 9
K 5 3
K 6 5
|
9 2
Q 10 3
9 7 6 4
Q 10 8 4 | ![Table](tx.gif) | 10 5
A 8 7 6 2
A 10 8 2
J 3
|
3 NT → 8 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9989. ![](i/lg.gif) | A Q 8 6
A Q 8
7 6
K 10 8 6
|
K 9 2
10 9 7 6
9 5 4 3 2
Q | ![Table](tx.gif) | 10 5
J 3 2
A K 10 8
J 5 4 3
|
3 NT → 8 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9990. ![](i/lg.gif) | A 8 6 5
A Q 10 3
5 4
K Q 3
|
K 10 9
9 6
K 7 6 3 2
10 8 6 | ![Table](tx.gif) | Q 2
J 8 7 2
A 10 9 8
J 5 4
|
3 NT → 8 4 → 9 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
Simulation 8Z21 Main | ![](g/53.gif) | Top Stayman or Not IV |
9991. ![](i/lg.gif) | A Q 9 6
A Q 6 3
K 6
Q 10 4
|
8 5 2
10
10 8 7 4 3 2
K J 8 | ![Table](tx.gif) | K 10
J 9 8 7 2
A 9 5
6 5 3
|
3 NT → 7 4 → 9 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9992. ![](i/lg.gif) | A K 9 5 2
A 10 9
10 4 2
K Q
|
Q 8 6
8 7 3 2
A 9 7 5
J 5 | ![Table](tx.gif) | 10
Q J 6
K 8 6 3
10 8 6 4 3
|
3 NT → 11 4 → 11 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9993. ![](i/lg.gif) | A 10 9 6
A 9 7
A K 9 6
J 4
|
K Q 8
10 2
7 3 2
K 10 8 6 3 | ![Table](tx.gif) | 5 2
Q J 8 6 3
10 8 5 4
Q 5
|
3 NT → 10 4 → 11 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9994. ![](i/lg.gif) | A Q 9 6
A 7 6 3
6 4 3
K Q
|
5 2
Q 9
A K 10 5 2
8 6 4 3 | ![Table](tx.gif) | K 10 8
J 10 8 2
9 8 7
J 10 5
|
3 NT → 7 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9995. ![](i/lg.gif) | K Q 6 5
A 10
A 10 9 4
Q 4 3
|
9 8
J 9 6 3
K 3 2
J 10 8 5 | ![Table](tx.gif) | A 10 2
Q 8 7 2
8 7 6 5
K 6
|
3 NT → 10 4 → 11 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9996. ![](i/lg.gif) | A K 10 2
J 10 7 6
A 7 4
K 5
|
Q 9 6 5
A 9 8 2
K 10 8
J 4 | ![Table](tx.gif) | 8
Q 3
9 6 5 3 2
Q 10 8 6 3
|
3 NT → 9 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9997. ![](i/lg.gif) | A K Q 10
A J 9
10 5
K 10 8 5
|
9 8
Q 10 8
A 9 7 3
Q J 4 3 | ![Table](tx.gif) | 6 5 2
7 6 3 2
K 8 6 4 2
6
|
3 NT → 8 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9998. ![](i/lg.gif) | Q 8 5 2
A Q
A 10 8 4
Q J 5
|
A 10 6
J 10 9 8
9 7 6 5
8 3 | ![Table](tx.gif) | K 9
7 6 3 2
K 3 2
K 10 6 4
|
3 NT → 9 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
9999. ![](i/lg.gif) | A K Q 6
J 8 7
A K 5 4
8 5
|
9 8 2
A 9 2
10 8
K Q 10 6 3 | ![Table](tx.gif) | 10 5
Q 10 6 3
9 7 6 3 2
J 4
|
3 NT → 9 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
10000. ![](i/lg.gif) | K 10 6 5
A 10 7 6
A 5 3
K J
|
A
Q J 9 8 2
K 10 7 6
8 5 4 | ![Table](tx.gif) | Q 9 8 2
3
9 8 4 2
Q 10 6 3
|
3 NT → 9 4 → 10 | J 7 4 3
K 5 4
Q J
A 9 7 2 |
Simulation 8Z21 Main | ![](g/13.gif) | Top Stayman or Not IV |
© 2019 Richard Pavlicek