Author: Dan Homan
Date: 13:51:30 01/30/98
Go up one level in this thread
I just ran this again (but longer) and it switches back to h5 with more searching at ply 12. I think it is hard for black to go wrong here, so perhaps our programs are seeing lots of ways to go right and can't make up their minds... - Dan On January 30, 1998 at 16:37:23, Dan Homan wrote: >Here's the output of my program, EXchess. It likes h5 for a >while but then switches to Kf4. My amateur analysis is that >Kf4 is better because it closes off any possibility that >the white king can catch the h-pawn. > > - Dan > >Note my scores are 100 = 1 pawn. > >Black(1): display > > +---+---+---+---+---+---+---+---+ >8 | | | | | | | | | Black to move > +---+---+---+---+---+---+---+---+ >7 | | | | | | | | *P| castle: - > +---+---+---+---+---+---+---+---+ >6 | | *P| | | K | P | *B| | > +---+---+---+---+---+---+---+---+ >5 | *P| | | | | | *K| | > +---+---+---+---+---+---+---+---+ >4 | P | | P | | | | | | fifty: 0 > +---+---+---+---+---+---+---+---+ >3 | | P | | | | | | | > +---+---+---+---+---+---+---+---+ >2 | | | | | | | | | > +---+---+---+---+---+---+---+---+ >1 | | | | | | | | | > +---+---+---+---+---+---+---+---+ > a b c d e f g h > >Black(1): analyze 120 > 3. 357 0 288 g6c2 b3b4 c2f5 e6e5 > 4. 244 0 1302 g6c2 f6f7 c2f5 e6e5 f5d3 > 4. 323 0 2909 g6f5 e6e5 f5c2 c4c5 c2b3 > 5. 11 1 7549 g6f5 e6e7 f5g6 f6f7 g6f7 e7f7 > 5. 16 1 9360 g5f4 f6f7 g6f7 e6f7 f4f5 f7f8 > 5. 18 1 11889 h7h5 f6f7 g6f7 e6f7 h5h4 f7f8 > 5. 224 1 13689 g5h6 e6d7 g6c2 d7c6 c2b3 > 6. 20 1 17463 g5h6 e6e7 b6b5 f6f7 g6f7 e7f7 > 7. 16 1 34108 g5h6 e6e7 h6g5 f6f7 g6f7 e7f7 > g5f4 > 7. 18 2 62858 g6h5 f6f7 h5f7 e6f7 h7h5 f7f8 > h5h4 f8f7 > 7. 30 2 66095 h7h5 f6f7 g6f7 e6f7 h5h4 f7f8 > g5h5 f8f7 > 8. 30 2 75499 h7h5 f6f7 g6f7 e6f7 h5h4 f7e7 > g5h5 e7f7 > 9. 25 4 143255 h7h5 f6f7 g6f7 e6f7 h5h4 f7e7 > g5h5 e7d6 h4h3 c4c5 > 10. 111 13 502809 h7h5 c4c5 h5h4 c5b6 h4h3 e6e5 > h3h2 b6b7 h2h1 b7b8 > 11. 14 28 1119575 h7h5 f6f7 g6f7 e6f7 h5h4 c4c5 > b6c5 f7e6 c5c4 b3c4 > 11. 15 55 2182050 g6f5 e6f7 f5g6 f7e7 g6h5 f6f7 > h5f7 e7f7 g5f5 f7f8 > 11. 110 89 3536351 g5f4 f6f7 g6f7 e6f7 f4e5 f7e7 > e5d4 e7d7 d4c3 d7c6 > 12. 110 100 4004436 g5f4 f6f7 g6f7 e6f7 f4e5 f7e7 > e5d4 e7d7 d4c3 d7c6 > >node_count = 4800970 quiescent nodes = 127829 eval_count = 337008 >hash hits = 1536049 hash moves = 246483 pawn hash hits = 330694 >node_rate = 40008 null cuts = 0 exten = 153542 mthreats = 0
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