Author: Stuart Cracraft
Date: 07:15:53 09/03/04
Go up one level in this thread
On September 03, 2004 at 08:57:49, Andrew Platt wrote: >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: > Interesting, Crafty 19.16 here (which I don't read the source of before implementing any of my code unless I have had programmer's block for 2 solid weeks on the same subject) can solve it but it takes a while. >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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