Author: Kurt Utzinger
Date: 08:23:04 07/12/03
Go up one level in this thread
On July 12, 2003 at 11:00:09, George Tsavdaris wrote:
> Junior8 has an impressive 11/15 or 73.3%, while in the previous cancelled
>tournament, had 7.5/21 or 35.7%. Also TheKing-3.23 had a more impressive 15.5/21
>or 73.8% and now it has only one win and a 5.5/15 or 36.6%.
>It's difficult to believe this is only due to the different books,
>but i can't give any other explanation (maybe a simple coincidence).
>
>Two very impressive games were played in the last two rounds:
>
>Chess Tiger 15.0n - Shredder 7.04 0-1
>In move 36 Shredder had a Knight and a pawn less and not any immediate
>threat, but finally managed to win in a complicated position. I think
>the lose move was 57.Bb5.
>I had CT-15n analyse the move and in the start of ply 12 in 1 minute,thought Bb5
>was the best, but when it completed the search on 12 ply in 1:30
>found the best move 57.Qa2. As "time control" is ~~2min/move CT-15 should
>have played the move but it didn't.
>
>[D]8/1q1r3k/3B2pP/6P1/Q2pp3/2bB4/2K2R2/8 w - - 0 1
>
>Analysis by Chess Tiger 15.0 Normal:
>
>57.Bd6-f4 Rd7-f7 58.Qa4-a2 e4xd3+ 59.Kc2xd3 Qb7-b5+ 60.Kd3-c2 Qb5-f5+ 61.Kc2-c1
>d4-d3
> ² (0.55) Depth: 7 00:00:00 167kN
>57.Bd6-f4 e4-e3 58.Rf2-h2 Rd7-f7 59.Bf4xe3 Qb7-b2+ 60.Kc2-d1 Qb2xh2
> ² (0.28) Depth: 7 00:00:00 202kN
>57.Bd6-f4 e4-e3 58.Rf2-h2 Rd7-f7 59.Qa4-e8 Qb7-b2+ 60.Kc2-d1 Qb2-a1+ 61.Kd1-e2
>Qa1-b2+ 62.Ke2-d1
> = (-0.04) Depth: 8 00:00:01 418kN
>57.Bd3-b5 Rd7xd6 58.Qa4-a2 Rd6-d5 59.Bb5-e8 d4-d3+ 60.Kc2xc3 Rd5-c5+ 61.Kc3-d4
>Qb7-b4+ 62.Kd4-e3 Rc5xg5
> ± (0.72) Depth: 8 00:00:01 652kN
>57.Bd3-b5 e4-e3 58.Bb5xd7 e3xf2 59.Bd7-h3 Qb7-e4+ 60.Kc2-b3 Qe4-b1+ 61.Kb3-c4
>f2-f1Q+ 62.Bh3xf1 Qb1xf1+ 63.Kc4-b3
> ² (0.46) Depth: 9 00:00:03 1261kN
>57.Bd3-b5 e4-e3 58.Bb5xd7 e3xf2 59.Bd7-h3 Qb7-e4+ 60.Kc2-c1 Qe4-e1+ 61.Kc1-c2
>Qe1-e4+ 62.Kc2-c1 Qe4-e1+ 63.Kc1-c2 Qe1-e4+ 64.Kc2-c1 Qe4-e1+ 65.Kc1-c2
> = (-0.05) Depth: 10 00:00:07 2660kN
>57.Bd3-b5 e4-e3 58.Bb5xd7 e3xf2 59.Bd7-h3 Qb7-e4+ 60.Kc2-c1 Qe4-e1+ 61.Kc1-c2
>Qe1-e4+ 62.Kc2-c1 Qe4-e1+ 63.Kc1-c2 Qe1-e4+ 64.Kc2-c1 Qe4-e1+ 65.Kc1-c2 Qe1-e4+
> = (-0.05) Depth: 11 00:00:12 4407kN
>57.Bd3-b5 Rd7xd6 58.Qa4-c4 Rd6-d5 59.Rf2-f8 d4-d3+ 60.Kc2xc3 d3-d2 61.Rf8-b8
>Qb7-f7 62.Bb5-a4 Rd5-d3+ 63.Kc3-b4
> = (-0.20) Depth: 12 00:01:00 22308kN
>57.Qa4-a2 e4xd3+ 58.Kc2xd3 Bc3-e1 59.Rf2-f8 Qb7-b5+ 60.Kd3-e4 Qb5-c6+ 61.Ke4-d3
>Qc6-b5+ 62.Kd3-e4 Qb5-c6+ 63.Ke4-d3 Qc6-b5+ 64.Kd3-e4 Qb5-c6+ 65.Ke4-d3
> = (-0.05) Depth: 12 00:01:30 33436kN
>57.Qa4-a2 e4xd3+ 58.Kc2xd3 Bc3-e1 59.Rf2-f8 Qb7-b5+ 60.Kd3-e4 Qb5-c6+ 61.Ke4-d3
>Qc6-b5+ 62.Kd3-e4 Qb5-c6+ 63.Ke4-d3 Qc6-b5+ 64.Kd3-e4 Qb5-c6+ 65.Ke4-d3
> = (-0.05) Depth: 13 00:02:12 48453kN
>57.Qa4-a2 e4xd3+ 58.Kc2xd3 Bc3-e1 59.Rf2-f8 Qb7-b5+ 60.Kd3-e4 Qb5-c6+ 61.Ke4-d3
>Qc6-b5+ 62.Kd3-e4 Qb5-c6+ 63.Ke4-d3 Qc6-b5+ 64.Kd3-e4 Qb5-c6+ 65.Ke4-d3
> = (-0.05) Depth: 14 00:04:05 90459kN
The explanation is quite simple: ChessTiger15 played 57.Bb5? after
a thinking time of only 39 seconds, at depth search 11 because the
program had obviously not much time left up to move 60.
Kurt
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