Author: Ed Schröder
Date: 04:37:05 12/16/01
Go up one level in this thread
On December 16, 2001 at 04:59:42, Uri Blass wrote:
>Shredder6 blundered in the first position by 23...Rc8 with evaluation of 0.11
>pawns for itself at depth 12 and Deep Fritz won the game
>
>Shredder expected 24.Qg4 and was surprised by 24.Bxh6
>
>23...Qa7 could probably save black and yace suggest this move after long
>analysis and can see no problem
>
>
>The previous moves in the game were also blunders so practically you have 2
>find move problems(find 24.Bxh6 and find 23.Bxh6 and too other problems when the
>target is to avoid a tactical mistakes and I did not analyze enough to get a
>list of the wrong possible moves that programs need to avoid)
>
>The programs in the game practically found only 24.Bxh6 when there were 3
>mistakes in a row(it may be interesting to know the maximal number of tactical
>mostakes one after the other in a serious comp game).
>
>I analyzed with yace when I took back moves.
>
>Fritz 7a - Shredder 6
>[D]1r2nrk1/1q1b1pp1/p3p2p/2bpP3/3N1B2/1B5Q/PP1R1PPP/5RK1 b - - 0 1
>
>Analysis by Yace 0.99.56:
>
>23...Qxb3 24.Nxb3
> +- (6.09) Depth: 1 00:00:00
>23...Bxd4 24.Rxd4
> ² (0.33) Depth: 1 00:00:00
>23...Qb6
> = (-0.03) Depth: 1 00:00:00
>23...Qb4
> = (-0.11) Depth: 1 00:00:00
>23...Nc7
> = (-0.20) Depth: 1 00:00:00
>23...Nc7 24.Rc1
> = (-0.01) Depth: 2 00:00:00
>23...Nc7 24.Rc1 Qb4
> = (-0.09) Depth: 3 00:00:00
>23...Nc7 24.Rc1 Qb4 25.Qh5
> = (0.06) Depth: 4 00:00:00
>23...Qb4 24.Nxe6 fxe6 25.Bxd5
> = (0.05) Depth: 4 00:00:00
>23...Qb4 24.Rfd1 Nc7 25.Qd3
> = (0.00) Depth: 4 00:00:00
>23...Qb4 24.Rfd1 Nc7 25.Qg4 Nb5
> = (0.00) Depth: 5 00:00:00 25kN
>23...a5 24.Rc1 Bxd4 25.Bxd5
> = (-0.01) Depth: 5 00:00:00 25kN
>23...a5 24.Qd3 a4 25.Bd1 Nc7
> = (-0.04) Depth: 5 00:00:00 25kN
>23...a5 24.Qd3 Bb5 25.Nxb5 Qxb5 26.Rc1 Qb4
> = (0.10) Depth: 6 00:00:00 102kN
>23...a5 24.Qd3 Nc7 25.Rc1 Qb4 26.a3 Qb6
> = (0.11) Depth: 7 00:00:01 332kN
>23...a5 24.Qd3 Nc7 25.Rc1 Qb4 26.a3 Qb6 27.Bd1
> = (0.18) Depth: 8 00:00:04 1292kN
>23...Qb4 24.Rfd1 Nc7 25.Qg4 g5 26.Bxg5 hxg5 27.Qxg5+ Kh8 28.Qh4+ Kg8 29.Qg3+ Kh8
>30.Bxd5
> = (0.17) Depth: 8 00:00:05 1292kN
>23...Qb4 24.Rfd1 Nc7 25.Qg4 g5 26.Be3 Rfc8 27.Rc2
> = (0.16) Depth: 8 00:00:05 1601kN
>23...Qb4 24.Be3 Rb7 25.Rc1 Rc7 26.a3 Qb6 27.Rdc2 Bxd4 28.Rxc7 Bxe3 29.Qxe3 Qxe3
>30.fxe3 Nxc7 31.Rxc7
> = (0.24) Depth: 9 00:00:19 5835kN
>23...a5 24.Qd3 Nc7 25.Rc1 Qb4 26.Rdc2 Bxd4 27.Bxh6
> = (0.23) Depth: 9 00:00:23 6862kN
>23...a5 24.Bc2 f5 25.b3 Qb4 26.Rfd1 Nc7 27.Qh5 Rfc8
> = (0.20) Depth: 9 00:00:32 9706kN
>23...Qb6 24.Rfd1 Nc7 25.Qg4 Kh8 26.Nxe6 fxe6 27.Qxe6
> = (0.19) Depth: 9 00:00:38 11553kN
>23...Qb6 24.Rfd1 Nc7 25.Qg4 Kh8 26.Rd3 Bb5 27.Rg3 Bd3 28.Rgxd3 Bxd4
> = (0.18) Depth: 9 00:00:40 12128kN
>23...Qb6 24.Rfd1 Nc7 25.Qg4 Kh8 26.Rd3 Nb5 27.Rg3 Rg8 28.Be3 Nxd4
> = (0.21) Depth: 10 00:01:08 20560kN
>23...Qb6 24.Rfd1 Nc7 25.Qg3 Kh8 26.Qd3 Kg8 27.Bc2 Rfc8 28.Qh7+ Kf8 29.Qh8+ Ke7
>30.Qxg7 Ke8
> = (0.24) Depth: 11 00:02:57 52148kN
>23...Qb6 24.Rfd1 Rb7 25.Qd3 Bb5 26.Nxb5 Qxb5 27.Bc2 Qxd3 28.Bxd3 Nc7 29.Rc1 Bd4
> ² (0.35) Depth: 12 00:10:52 193626kN
>23...Qa7 24.Be3 Rb4 25.Rfd1 a5 26.a3 Rb7 27.Rc1 Qb6 28.Rxc5
> ² (0.34) Depth: 12 00:24:33 444807kN
>23...Qa7 24.Be3 Rb4 25.Rfd1 a5 26.a3 Rb7 27.Rc1 Qb6 28.Bd1 Bb5
> = (0.24) Depth: 12 00:27:29 498842kN
>23...Qa7 24.Be3 f5 25.Nc2 Bxe3 26.Nxe3 Qc7 27.Rfd1 Bb5 28.f4 Qc5 29.Rd4 Be2
>30.R1d2
> = (0.23) Depth: 13 00:40:37 733628kN
>23...Qa7 24.Rfd1 a5 25.Qd3 Bxd4 26.Qxd4 Qxd4 27.Rxd4 Nc7 28.Rb1 Nb5 29.Rd3 Rfc8
>30.Bd2 Ra8 31.Rd1
> = (0.25) Depth: 14 01:53:15 1977757kN
>23...Qa7 24.Rfd1 a5 25.Qd3 Bxd4 26.Qxd4 Qxd4 27.Rxd4 Nc7 28.Rb1 Nb5 29.Rd3 Rfc8
>30.Bd2 Ra8 31.Rc1 Rxc1+ 32.Bxc1
> = (0.22) Depth: 15 04:12:15 107379kN
>23...Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Nb5 27.Nxb5 Rxb5 28.Qg3 Kh8 29.Ba4 Rb7
>30.Bxd7 Rxd7 31.Qg4 Rc7 32.Rdc2
> = (0.23) Depth: 16 13:09:22 379234kN
>23...Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2 Rc8
>30.Qe7 Re8 31.Qh4
> = (0.25) Depth: 17 31:25:16 1122791kN
>
>(Blass, Tel-aviv 16.12.2001)
Century 4 fails low because of the Bxh6 threat around i minute and picks Qa7 as
best move after 2.5 minutes. Its log:
00:00:19 10.01 -0.16 1..Rc8 2.Bxh6 gxh6 3.Qxh6 Qb6 4.Bc2
f5 5.exf6 Nxf6 6.Nf3 Bb4 7.Re2 (18)
00:00:59 11.00 -1.11 1..Rc8 2.Bxh6 gxh6 3.Qxh6 Qc7 4.Bc2
f5 5.Nxe6 Qxe5 6.Nxf8 Bxf8 7.Qg6
Bg7 (41)
00:01:24 11.01 -0.88 1..a5 2.Bxh6 gxh6 3.Qxh6 Qc7 4.Bc2
f5 5.Nxe6 Bxe6 (59)
00:01:49 11.02 -0.38 1..Qb4 2.Rfd1 Ba4 3.Qg3 Kh8 4.a3
Qa5 (84)
00:02:30 11.07 -0.31 1..Qb6 2.Rfd1 Bb5 3.Qg4
00:02:48 11.14 -0.23 1..Qa7 2.Rfd1 Rb4 3.Be3 f6 4.Kh1
Nc7 5.Qg3 Rf7 6.exf6 Rxf6 (159)
============
>Here Fritz7a blundered and played Rd2 when Bxh6 is winning a pawn(the 0.23 pawns
>evaluation is result of learning(yace did not finish depth 17 so it could not
>use the score at depth 17 for 23...Qa7)
>
>Fritz7a calculated for 7 minutes and 50 seconds in the game.
2 seconds for Century 4.
00:00:01 7.01 0.21 1.Be3 Qa7 2.Qg3 Rc8 3.Bc2 g6
00:00:02 7.16 0.21 1.Bxh6
00:00:02 7.16 0.26 1.Bxh6 gxh6 2.Qxh6 Ng7 3.Bc2 Rfc8
4.Qh7 Kf8 5.Qh8 Ke7 6.Qxg7 Bxd4 (2)
00:00:03 8.00 0.26 1.Bxh6 gxh6 2.Qxh6 Ng7 3.Bc2 Rfc8
4.Qh7 Kf8 5.Qh8 Ke7 6.Qxg7 Bxd4 (2)
00:00:07 9.00 0.55 1.Bxh6 gxh6 2.Qxh6 Ng7 3.Bc2 Rfc8
4.Qh7 Kf8 5.Qh8 Ke7 6.Qxg7 Bxd4
7.Bg6 (4)
00:00:12 10.00 0.55 1.Bxh6 gxh6 2.Qxh6 Ng7 3.Bc2 Rfc8
4.Qh7 Kf8 5.Qh8 Ke7 6.Qxg7 Bxd4
7.Bg6 (10)
00:00:43 11.00 0.95 1.Bxh6 gxh6 2.Qxh6 Qc7 3.Bc2 f5
4.Nxe6 Bxe6 5.Qxe6 Qf7 6.Qxd5 Qxd5
7.Rxd5 Be7 8.Bb3 Rf7 (16)
===================
>Fritz 7a - Shredder 6
>[D]1r2nrk1/1q1b1pp1/p3p2p/2bpP3/3N1B2/1B5Q/PP3PPP/3R1RK1 w - - 0 1
>
>Analysis by Yace 0.99.56:
>
>23.Nxe6 fxe6
> -+ (-2.90) Depth: 1 00:00:00
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 1 00:00:00
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 1 00:00:00
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 1 00:00:00
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 1 00:00:00
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 1 00:00:00
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 3 00:00:00
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 3 00:00:00
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 4 00:00:00
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 5 00:00:00 7kN
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 6 00:00:00 19kN
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 7 00:00:00 79kN
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 8 00:00:01 274kN
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 9 00:00:06 1895kN
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 10 00:00:13 4446kN
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 11 00:01:14 22135kN
>23.Rd2 Qa7 24.Rfd1 Rb4 25.Qc3 Nc7 26.Rc1 Rxd4 27.Be3 Nb5 28.Qxc5 Rxd2 29.Bxd2
>Rc8 30.Qe7 Re8 31.Qh4
> = (0.23) Depth: 12 00:04:11 72225kN
>23.Bxh6 gxh6 24.Qxh6 Ng7 25.Rd3 Bxd4 26.Rxd4 Bb5 27.Rg4 f6 28.exf6 Bxf1 29.Rxg7+
>Qxg7 30.fxg7 Bxg2
> = (0.24) Depth: 12 00:06:26 114791kN
>23.Bxh6 gxh6 24.Qxh6 Ng7 25.Rd3 Bxd4 26.Rxd4 Bb5 27.Rg4 f6 28.exf6 Rf7 29.fxg7
>Rxg7
> ² (0.63) Depth: 12 00:08:13 146682kN
>23.Bxh6 Qc7 24.Bf4 a5 25.Nf3 a4 26.Bc2 g6 27.Ng5 Bxf2+
> ± (1.07) Depth: 12 00:18:51 340716kN
>
>(Blass, Tel-aviv 16.12.2001)
>
>Here Shredder blundered by 22...Bc5
>Yace see no problem at depth 13 with a5.
>
>It is interesting to note that shredder expected 23.Bxh6 and felt bad in the
>game(0.76 pawns against itself) but it did not help it to avoid 22...Bc5.
>Shredder used 15 minutes and 45 seconds and maybe it did not consider it
>important enough to finish iteration 13.
Same story as position 1, about 1 minute and 11 plies to see Bc5 is bad.
Ed
===================================================
00:00:03 9.00 -0.20 1..Bc5 2.Qg4 g5 3.Be3 Ng7 4.h4 Nf5
5.hxg5 Nxe3 6.fxe3 (2)
00:00:15 10.00 -0.16 1..Bc5 2.Bc2 Bxd4 3.Rxd4 f5 4.Bb3
Bc6 5.Rfd1 Nc7 6.Qh5 (6)
00:00:43 11.00 -0.85 1..Bc5 2.Bxh6 gxh6 3.Qxh6 Qc7 4.Bc2
f5 5.Nxe6 Bxe6 6.Qxe6 Qf7 7.Qxf7 (36)
00:00:57 11.01 -0.54 1..Bb5 2.Nxb5 Qxb5 3.Rd3 a5
00:01:21 11.03 -0.48 1..Rc8 2.Rd3
00:01:58 11.05 -0.46 1..Qb4 2.Be3 Bc5 3.Bxd5 Qxb2 4.Rd2
Qb6 5.Bb3 Nc7 (87)
00:02:15 11.06 -0.44 1..Qb6 2.Be3 Bc5 3.Bxd5 Bb5 4.Nxb5
Bxe3 5.Be4 Bg5 6.Nd6 Qxb2 (118)
00:02:27 11.08 -0.35 1..Qa7 2.Qg4 Kh8 3.Be3
>Fritz 7a - Shredder 6
>[D]1r2nrk1/1q1bbpp1/p3p2p/3pP3/3N1B2/1B5Q/PP3PPP/3R1RK1 b - - 0 1
>
>Analysis by Yace 0.99.56:
>
>22...Qxb3 23.Nxb3
> +- (6.23) Depth: 1 00:00:00
>22...Bc6
> = (0.06) Depth: 1 00:00:00
>22...Bc6
> = (0.06) Depth: 1 00:00:00
>22...Bc6
> = (0.06) Depth: 1 00:00:00
>22...Bc6
> = (0.06) Depth: 1 00:00:00
>22...Bb5
> = (-0.01) Depth: 1 00:00:00
>22...Nc7
> = (-0.10) Depth: 1 00:00:00
>22...Nc7 23.Qh5
> = (0.05) Depth: 2 00:00:00
>22...Bb5 23.Qh4
> = (0.04) Depth: 2 00:00:00
>22...Bb5 23.Rfe1
> = (0.01) Depth: 2 00:00:00
>22...Bb5 23.Nxb5 Qxb5
> = (-0.14) Depth: 3 00:00:00
>22...Bb5 23.Rfe1 Bb4 24.Bd2
> = (0.06) Depth: 4 00:00:00
>22...Bb5 23.Nxb5 Qxb5 24.Qg4 Qb4 25.Rc1
> = (0.05) Depth: 5 00:00:00 14kN
>22...a5 23.Qg4 a4 24.Qh3
> = (0.04) Depth: 5 00:00:00 14kN
>22...a5 23.Bc1 Bb5 24.Nxe6 fxe6
> = (-0.04) Depth: 5 00:00:00 14kN
>22...a5 23.Qd3 Bb5 24.Nxb5 Qxb5 25.Qxb5 Rxb5
> = (0.14) Depth: 6 00:00:00 96kN
>22...Bb5 23.Nxb5 Qxb5 24.Qxh6 gxh6 25.a4
> = (0.13) Depth: 6 00:00:00 96kN
>22...Bb5 23.Rfe1 Nc7 24.a4 Bd7 25.Qh5
> = (0.07) Depth: 6 00:00:00 96kN
>22...Bb5 23.Rfe1 Bb4 24.Bd2 Bc5 25.Qg4 h5
> = (0.17) Depth: 7 00:00:01 178kN
>22...Nc7 23.Qg4 Kh8 24.Bc2 Qxb2 25.Nb3
> = (0.16) Depth: 7 00:00:02 445kN
>22...Nc7 23.Qg4 Kh8 24.Rc1 Rfc8 25.Rfd1 Bb5
> = (0.14) Depth: 7 00:00:02 445kN
>22...Nc7 23.Rd3 Nb5 24.Bxh6 Nxd4 25.Rxd4 gxh6 26.Rg4+ Bg5 27.Qxh6 f6 28.exf6
> ² (0.42) Depth: 8 00:00:06 1565kN
>22...Bb5 23.Rfe1
> ² (0.41) Depth: 8 00:00:07 1830kN
>22...Bb5 23.Rfe1 Bb4 24.Re3 Bc5 25.Qg4 Bxd4 26.Rxd4
> ² (0.32) Depth: 8 00:00:08 2135kN
>22...Bb5 23.Rfe1 Nc7 24.Qg4 Kh8 25.Bc2 Rfc8 26.Rc1 Bc5
> = (0.21) Depth: 9 00:00:19 5359kN
>22...Bb5 23.Rfe1 Qb6 24.Qg4 Bb4 25.Bd2 h5 26.Qh4 Bc5 27.Nxb5
> = (0.19) Depth: 10 00:00:46 13810kN
>22...Bb5 23.Nxb5 Qxb5 24.Rd3 Qb4 25.Bd2 Qe4 26.Re1 Qh7 27.Rg3 Bb4 28.Rd1
> = (0.25) Depth: 11 00:01:56 35415kN
>22...Bb5 23.Rfe1 Bc5 24.Qg4 Kh8 25.Be3 Bb4 26.Bd2 Bc5 27.Bc2 f5
> ² (0.39) Depth: 12 00:10:10 171883kN
>22...a5 23.Bc2 Rc8 24.Qd3 f5 25.b3 Bc5 26.Rc1 Nc7 27.Nxe6 Nxe6 28.Be3
> ² (0.38) Depth: 12 00:15:11 265941kN
>22...a5 23.Bc2 Rc8 24.Qd3 f5 25.b3 Bc5 26.Rc1 Nc7
> ² (0.35) Depth: 12 00:17:46 311829kN
>22...Rc8 23.Rd3 a5 24.Bxh6 a4 25.Bxa4 Bxa4 26.Bxg7 Nxg7 27.Rg3 Bg5 28.b4
> ² (0.34) Depth: 12 00:20:06 354562kN
>22...Rc8 23.Qg4 Kh8 24.Rd3 Kg8
> ² (0.35) Depth: 12 00:24:18 421033kN
>22...a5 23.Bc2 Rc8 24.Qd3 f5 25.b3 Bc5 26.Rc1 Nc7
> ² (0.35) Depth: 12 00:24:18 421033kN
>22...a5 23.Bc2 Rc8 24.Qd3 f5 25.b3 Bc5 26.Rc1 Nc7 27.a4 Ba3 28.Rcd1 Bc5
> ² (0.32) Depth: 13 00:45:34 776003kN
>
>(Blass, Tel-aviv 16.12.2001)
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