Author: Andrew Platt
Date: 05:57:49 09/03/04
Go up one level in this thread
Just to show how slippery this position is, I just tried it with Crafty 19.17
and it fails to find the mate in ply 9 and now takes a long time to find it:
unable to open book file [./book.bin].
book is disabled
unable to open book file [./books.bin].
Crafty v19.17
White(1): ponder off
pondering disabled.
White(1): setboard 4r1k1/p1qr1p2/2pb1Bp1/1p5p/3P1n1R/1B3P2/PP3PK1/2Q4R w - -
White(1): analyze
Analyze Mode: type "exit" to terminate.
clearing hash tables
time surplus 0.00 time limit 22.50 (3:30)
depth time score variation (1)
7 0.26 +1 1. Kf1!!
7 0.57 -1.88 1. Kf1 Kf8 2. Bc2 c5 3. dxc5 Qxc5 4.
Qd2 Qd5
7-> 0.59 -1.88 1. Kf1 Kf8 2. Bc2 c5 3. dxc5 Qxc5 4.
Qd2 Qd5
8 1.52 +1 1. Kf1!!
8 3.41 -0.99 1. Kf1 a5 2. Rxh5 gxh5 3. Rxh5 Re1+
4. Kxe1 Nxh5 5. Qg5+ Kf8 6. Qh6+ Kg8
7. Qxh5
8-> 3.46 -0.99 1. Kf1 a5 2. Rxh5 gxh5 3. Rxh5 Re1+
4. Kxe1 Nxh5 5. Qg5+ Kf8 6. Qh6+ Kg8
7. Qxh5
9 7.75 -0.70 1. Kf1 a5 2. Rxh5 gxh5 3. Rxh5 Re1+
4. Kxe1 Nxh5 5. Qg5+ Kf8 6. Qh6+ Ke8
7. Qh8+ Bf8 8. Qxh5
9 8.59 +1 1. Qxf4!!
9 8.98 +3 1. Qxf4!!
9 9.80 +M 1. Qxf4!!
9 46.31 12.35 1. Qxf4 Be5 2. dxe5 Qd8 3. Bxd8 Rexd8
4. Qf6 Kf8 5. Bxf7
9-> 46.32 12.35 1. Qxf4 Be5 2. dxe5 Qd8 3. Bxd8 Rexd8
4. Qf6 Kf8 5. Bxf7
10 59.13 +1 1. Qxf4!!
10 1:12 +3 1. Qxf4!!
10 1:32 +M 1. Qxf4!!
10 7:05 Mat06 1. Qxf4 Bxf4 2. Rxh5 gxh5 3. Rxh5 Bh6
4. Rxh6 Qh2+ 5. Kxh2 Kf8 6. Rh8#
10-> 7:05 Mat06 1. Qxf4 Bxf4 2. Rxh5 gxh5 3. Rxh5 Bh6
4. Rxh6 Qh2+ 5. Kxh2 Kf8 6. Rh8#
exit 11 7:30 1/6? 1. Qxf4
White(1): exit
analyze.White(1): analyze complete.
I'm still not seeing it till ply 12 so mine takes even longer!
Andy.
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