Author: Mike Byrne
Date: 10:21:25 06/29/02
Go up one level in this thread
On June 26, 2002 at 13:46:03, Andrew Williams wrote:
>Here's a position where postmodernist made a foolish mistake and got squashed by
>crafty:
>
>[D]3R4/5k2/1p1p4/1NbP2pp/2P3P1/P7/5rKP/8 w - - am Kg3
>
>PostModernist takes 13 seconds to latch onto Kh3 on my Athlon 1200, but it
>didn't have enough time in this short game. How long does it take your engine to
>see that Kh3 is better? Furthermore, after making the losing error, how long
>does it take your program to find that Black will win:
>
>[D]3R4/5k2/1p1p4/1NbP2pp/2P3P1/P5K1/5r1P/8 b - - 0 1 bm h4
>
>
>The whole game is presented below (I believe PM went wrong around move 57, but
>I'm not too bothered about that at the moment):
>
>[Event "Computer chess game"]
>[Site "holmwood"]
>[Date "2002.06.26"]
>[Round "2"]
>[White "postmodernist"]
>[Black "crafty"]
>[Result "0-1"]
>[TimeControl "180+2"]
>[FEN "r3qrk1/1ppb1pbn/n2p2pp/p2Pp3/2P1P2B/P1N5/1P1NBPPP/R2Q1RK1 w - - 0 1"]
>[SetUp "1"]
>
>{--------------
>r . . . q r k .
>. p p b . p b n
>n . . p . . p p
>p . . P p . . .
>. . P . P . . B
>P . N . . . . .
>. P . N B P P P
>R . . Q . R K .
>white to play
>--------------}
>1. Nb5 f5 2. exf5 Bxf5 3. Nb3 b6 4. Re1 Qf7 5. Nc3 Nf6 6. Qd2 Bd7 7. Qe3 a4
>8. Nd2 Nc5 9. Bf3 Bf5 10. Bxf6 Qxf6 11. Nde4 Nxe4 12. Bxe4 Bd7 13. f3 Ra5
>14. Qe2 Be8 15. Nb5 Qf7 16. Rab1 Bf6 17. b4 axb3 18. Rxb3 Ra4 19. Qc2 Bh4
>20. Ra1 Ra8 21. Qe2 Bg5 22. Re1 Rc8 23. Qd3 Bh4 24. Re2 Bg5 25. Rb1 Rd8 26.
>Reb2 Rc8 27. Rb3 Ra8 28. Qe2 Ra4 29. Rc3 Ra8 30. Re1 Rd8 31. Qf2 Rc8 32.
>Rc2 Ra8 33. Rc3 Ra5 34. Qe2 Bh4 35. Rd1 Ra8 36. Rb3 Rc8 37. Rdb1 Rd8 38.
>R3b2 Rc8 39. Qd2 Bg5 40. Qe1 Qf4 41. Re2 Bd8 42. Qf2 Bf7 43. Rbe1 Qh4 44.
>g3 Qh5 45. f4 exf4 46. Qxf4 Bg5 47. Qf2 Be8 48. Bf3 Qxf3 49. Qxf3 Rxf3 50.
>Rxe8+ Rxe8 51. Rxe8+ Kf7 52. Rc8 Be3+ 53. Kg2 Rf2+ 54. Kh3 Bc5 55. Rxc7+
>Kf8 56. Rh7 h5 57. Rh8+ Kf7 58. Rd8 g5 59. g4 Rf3+ 60. Kg2 Rf2+ 61. Kg3 h4+
>62. Kh3 Ra2 63. Rd7+ Kf8 64. Rd8+ Ke7 65. Rh8 Bg1 66. Rh7+ Kf6 67. Rxh4
>Rxh2+ 68. Kg3 gxh4+ 69. Kf4 Rf2+ 70. Ke3 Ke5 71. Nc3 h3
>{White resigns} 0-1
>
>
>Thanks for any responses...
>
>Andrew Williams
modified Crafty sees h3 instantly
and after Kg3, sees h4! instantly - needs a second or two to see the score
Crafty v18.15 (2 cpus)
White(1): setb 3R4/5k2/1p1p4/1NbP2pp/2P3P1/P7/5rKP/8 w - - am Kg3
+---+---+---+---+---+---+---+---+
8 | | | | R | | | | |
+---+---+---+---+---+---+---+---+
7 | | | | | | *K| | |
+---+---+---+---+---+---+---+---+
6 | | *P| | *P| | | | |
+---+---+---+---+---+---+---+---+
5 | | N | *B| P | | | *P| *P|
+---+---+---+---+---+---+---+---+
4 | | | P | | | | P | |
+---+---+---+---+---+---+---+---+
3 | P | | | | | | | |
+---+---+---+---+---+---+---+---+
2 | | | | | | *R| K | P |
+---+---+---+---+---+---+---+---+
1 | | | | | | | | |
+---+---+---+---+---+---+---+---+
a b c d e f g h
White(1): go
end-game phase
clearing hash tables
time surplus 0.00 time limit 36.00 (4:12)
nss depth time score variation (1)
starting thread 1
8 0.23 0.00 1. Kh3 Rf3+ 2. Kg2 Rf2+
8-> 0.23 0.00 1. Kh3 Rf3+ 2. Kg2 Rf2+
9 0.31 0.00 1. Kh3 Rf3+ 2. Kg2 Rf2+
9-> 0.34 0.00 1. Kh3 Rf3+ 2. Kg2 Rf2+
10 0.56 0.00 1. Kh3 Rf3+ 2. Kg2 Rf2+
10-> 0.61 0.00 1. Kh3 Rf3+ 2. Kg2 Rf2+
11 1.00 0.00 1. Kh3 Rf3+ 2. Kg2 Rf2+
11-> 1.16 0.00 1. Kh3 Rf3+ 2. Kg2 Rf2+
12 2.03 0.00 1. Kh3 Rf3+ 2. Kg2 Rf2+
12-> 2.39 0.00 1. Kh3 Rf3+ 2. Kg2 Rf2+
13 4.22 0.00 1. Kh3 Rf3+ 2. Kg2 Rf2+
13-> 5.31 0.00 1. Kh3 Rf3+ 2. Kg2 Rf2+
14 12.55 0.00 1. Kh3 Rf3+ 2. Kg2 Rf2+
White(1): ?
time=14.28 cpu=394% mat=1 n=18360521 fh=87% nps=1285k
ext-> chk=885378 cap=44327 pp=37771 1rep=44246 mate=5550
predicted=0 nodes=18360521 evals=7012666
endgame tablebase-> probes done=0 successful=0
SMP-> split=321 stop=33 data=7/32 cpu=56.35 elap=14.28
===========================================================================
force Kg3
+---+---+---+---+---+---+---+---+
8 | | | | R | | | | |
+---+---+---+---+---+---+---+---+
7 | | | | | | *K| | |
+---+---+---+---+---+---+---+---+
6 | | *P| | *P| | | | |
+---+---+---+---+---+---+---+---+
5 | | N | *B| P | | | *P| *P|
+---+---+---+---+---+---+---+---+
4 | | | P | | | | P | |
+---+---+---+---+---+---+---+---+
3 | P | | | | | | | |
+---+---+---+---+---+---+---+---+
2 | | | | | | *R| K | P |
+---+---+---+---+---+---+---+---+
1 | | | | | | | | |
+---+---+---+---+---+---+---+---+
a b c d e f g h
White(1): Kg3
time used: 17.47
clearing hash tables
time surplus 0.00 time limit 35.71 (4:09)
nss depth time score variation (1)
8-> 0.15 0.00 1. ... h4+ 2. Kh3 Rf3+ 3. Kg2 Rf2+
4. Kh3
9 0.22 0.00 1. ... h4+ 2. Kh3 Rf3+ 3. Kg2 Rf2+
4. Kh3
9-> 0.36 0.00 1. ... h4+ 2. Kh3 Rf3+ 3. Kg2 Rf2+
4. Kh3
10 0.96 ++ 1. ... h4+!!
10 1.71 -1.41 1. ... h4+ 2. Kh3 Ra2 3. Rd7+ Kg6 4.
Nc7 Rxa3+ 5. Kg2 h3+ 6. Kf1 Ra1+ 7.
Ke2 Ra2+ 8. Kd3 Rxh2 9. Ne6 Rf2 <HT>
10-> 1.79 -1.41 1. ... h4+ 2. Kh3 Ra2 3. Rd7+ Kg6 4.
Nc7 Rxa3+ 5. Kg2 h3+ 6. Kf1 Ra1+ 7.
Ke2 Ra2+ 8. Kd3 Rxh2 9. Ne6 Rf2 <HT>
11 2.24 ++ 1. ... h4+!!
11 4.19 -4.29 1. ... h4+ 2. Kh3 Rc2 3. Nxd6+ Ke7
4. Re8+ Kxd6 5. Re6+ Kd7 6. Rg6 Rc3+
7. Kg2 h3+ 8. Kf1 Rxc4 9. Rxg5 Rc1+
10. Ke2 Rc2+ 11. Kd3 Rxh2
11-> 4.30 -4.29 1. ... h4+ 2. Kh3 Rc2 3. Nxd6+ Ke7
4. Re8+ Kxd6 5. Re6+ Kd7 6. Rg6 Rc3+
7. Kg2 h3+ 8. Kf1 Rxc4 9. Rxg5 Rc1+
10. Ke2 Rc2+ 11. Kd3 Rxh2
12 4.63 ++ 1. ... h4+!!
12 7.29 -5.15 1. ... h4+ 2. Kh3 Ra2 3. Nxd6+ Ke7
4. Re8+ Kxd6 5. Re6+ Kd7 6. Re1 Bd6
7. Rh1 Rxa3+ 8. Kg2 Rc3 9. Rb1 Kc7
10. Rb5 Rxc4
12-> 7.47 -5.15 1. ... h4+ 2. Kh3 Ra2 3. Nxd6+ Ke7
4. Re8+ Kxd6 5. Re6+ Kd7 6. Re1 Bd6
7. Rh1 Rxa3+ 8. Kg2 Rc3 9. Rb1 Kc7
10. Rb5 Rxc4
13 11.15 -5.47 1. ... h4+ 2. Kh3 Rc2 3. Nxd6+ Ke7
4. Re8+ Kxd6 5. Re6+ Kd7 6. Re1 Bd6
7. Rh1 Rxc4 8. a4 Rxa4 9. Rb1 Ra3+
10. Kg2
13-> 11.49 -5.47 1. ... h4+ 2. Kh3 Rc2 3. Nxd6+ Ke7
4. Re8+ Kxd6 5. Re6+ Kd7 6. Re1 Bd6
7. Rh1 Rxc4 8. a4 Rxa4 9. Rb1 Ra3+
10. Kg2
Black(0): ?
time=12.96 cpu=376% mat=1 n=15799746 fh=86% nps=1219k
ext-> chk=869798 cap=18625 pp=55745 1rep=69478 mate=39324
predicted=0 nodes=15799746 evals=4356012
endgame tablebase-> probes done=0 successful=0
SMP-> split=1234 stop=200 data=8/32 cpu=48.79 elap=12.96
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