Author: Peter McKenzie
Date: 13:33:46 04/11/01
Go up one level in this thread
On April 11, 2001 at 16:01:43, Robert Hyatt wrote: >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: Hi Bob, what is crafty's score after Qb2? I know that my program doesn't understand this at all, does crafty have some understanding of the drawbacks of Qb2? > > (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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