Author: Robert Hyatt
Date: 13:01:43 04/11/01
Go up one level in this thread
On April 11, 2001 at 15:32:49, Uri Blass wrote:
>[D]8/p4k2/1p1p1qp1/1P1P4/P5P1/7P/4Q1K1/2b5 b - - 0 1
>
>The test is to avoid Qb2
>
>Most programs have no problem to avoid Qb2 but I suspect that this mistake is
>typical for Junior(I have not the latest version and it is interesting to know
>if Junior can avoid Qb2 and how much time does it need).
>
>I played Qb2 in a tournament game today and had to agree to a draw after Qxb2
>Bxb2 g5.
>
>It was my mistake to use only about 1 minute for 39...Qb2 when
>I had about 6 minutes for moves 39-40.
>
>I thought that 39...Qb2 is winning the game.
>Unfortunately I calculated only the line 39...Qb2 40.Qxb2 Bxb2 41.Kf3
>
>Uri
Crafty doesn't consider Qb2 at all:
(2) 7-> 0.29 -3.18 1. ... Bf4 2. Qc4 Qe5 3. Qc7+ Kf6 4.
Qd8+ Kg7 5. Qd7+ Kh6 6. Kf3
8 0.47 -3.33 1. ... Bf4 2. Qe4 Qb2+ 3. Kf3 Be5 4.
Ke3 Qb3+ 5. Ke2 Qxh3 6. Qf3+ Qxf3+
7. Kxf3 Ke7
8-> 0.55 -3.33 1. ... Bf4 2. Qe4 Qb2+ 3. Kf3 Be5 4.
Ke3 Qb3+ 5. Ke2 Qxh3 6. Qf3+ Qxf3+
7. Kxf3 Ke7
9 0.93 -3.02 1. ... Bf4 2. Qe6+ Qxe6 3. dxe6+ Kxe6
4. h4 Ke5 5. Kf3 d5 6. h5 gxh5 7. gxh5
9 1.89 -3.17 1. ... Bg5 2. Qf2 Bh4 3. Qxf6+ Kxf6
4. Kf3 Ke5 5. Ke3 g5 6. a5 Kxd5 7.
axb6 axb6
(4) 9-> 2.29 -3.17 1. ... Bg5 2. Qf2 Bh4 3. Qxf6+ Kxf6
4. Kf3 Ke5 5. Ke3 g5 6. a5 Kxd5 7.
axb6 axb6
(3) 10 2.65 -3.33 1. ... Bg5 2. Qf2 Bf4 3. Kf3 g5 4.
Qc2 Qh8 5. Qc7+ Kf6 6. Qxa7 Qxh3+ 7.
Ke4
10-> 2.93 -3.33 1. ... Bg5 2. Qf2 Bf4 3. Kf3 g5 4.
Qc2 Qh8 5. Qc7+ Kf6 6. Qxa7 Qxh3+ 7.
Ke4
11 4.95 -3.44 1. ... Bg5 2. Qf2 Bh4 3. Qxf6+ Kxf6
4. Kf3 Ke5 5. Ke2 Kxd5 6. Kf3 g5 7.
11-> 5.89 -3.44 1. ... Bg5 2. Qf2 Bh4 3. Qxf6+ Kxf6
4. Kf3 Ke5 5. Ke2 Kxd5 6. Kf3 g5 7.
Ke3 Bg3
12 8.18 -3.45 1. ... Bg5 2. Qf2 Bh4 3. Qxf6+ Kxf6
4. Kf3 Ke5 5. Ke2 Bf6 6. Ke3 g5 7.
Kf3 Kxd5 8. Ke3
(2) 12-> 11.81 -3.45 1. ... Bg5 2. Qf2 Bh4 3. Qxf6+ Kxf6
4. Kf3 Ke5 5. Ke2 Bf6 6. Ke3 g5 7.
Kf3 Kxd5 8. Ke3
13 23.08 -3.62 1. ... Bg5 2. Qf2 Bh4 3. Qxf6+ Kxf6
4. Kf3 Ke5 5. Ke2 Kxd5 6. Kd3 Ke5 7.
Kc4 d5+ 8. Kd3 g5 9. Ke3
13-> 33.00 -3.62 1. ... Bg5 2. Qf2 Bh4 3. Qxf6+ Kxf6
4. Kf3 Ke5 5. Ke2 Kxd5 6. Kd3 Ke5 7.
Kc4 d5+ 8. Kd3 g5 9. Ke3
14 44.57 -3.71 1. ... Bg5 2. Qf2 Bh4 3. Qxf6+ Kxf6
4. Kf3 Ke5 5. Ke2 Kxd5 6. Kd3 g5 7.
Ke3 Kc4 8. Ke4 d5+ 9. Ke5 d4
14-> 49.67 -3.71 1. ... Bg5 2. Qf2 Bh4 3. Qxf6+ Kxf6
4. Kf3 Ke5 5. Ke2 Kxd5 6. Kd3 g5 7.
Ke3 Kc4 8. Ke4 d5+ 9. Ke5 d4
However, the temptation to trade queens when ahead in material is pretty
strong, and it thinks that queens will be traded a couple of moves later.
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