Draw position bishop+g3 pawn vs g2 pawn

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Vinvin
Posts: 4764
Joined: Thu Mar 09, 2006 8:40 am
Full name: Vincent Lejeune

Draw position bishop+g3 pawn vs g2 pawn

Post by Vinvin » Thu Nov 27, 2014 1:25 pm

on 1 second, Houdini 1.5 is more realistic (-0.02) than Stockfish in 40 minutes (-4.14).
[d] 8/8/8/6p1/8/6pP/4k1P1/b6K w - - 4 5

Code: Select all

Stockfish_14112600_x64_modern:
...
 85/114	00:24	 487.363k	19.811k	-4,07	5.Rg1 Rd2 6.Rf1 Rd1 7.Rg1 Ff6 8.Rf1 Fe7 9.Rg1 Fc5+ 10.Rh1 Fa3 11.Rg1 Rd2 12.Rf1 Fe7 13.Rg1 Fc5+ 14.Rh1 Fa3 15.Rg1 Fd6 16.Rf1 Rc3 17.Re2 Rc2 18.Rf1 Rd3 19.Rg1 Fb8 20.Rf1 Fa7 21.Re1 Fe3 22.Rf1 Fb6 23.Re1 Fa5+ 24.Rf1 Fb4 25.Rg1 Rc3 26.Rf1 Rd2 27.Rg1 Re1 28.Rh1 Fc3 29.Rg1 Fa5 30.Rh1 Rd2 31.Rg1 Rd1 32.Rh1 Re2 33.Rg1 Fb6+ 34.Rh1 Fd8 35.Rg1 Fc7 36.Rh1 Rd3 37.Rg1 Fb6+ 38.Rh1 Rd4 39.Rg1 Fc7 40.Rf1 Fb8 41.Re2 Fd6 42.Rf1 Fe7 43.Re2 Re4 44.Rf1 Re3 45.Rg1 Fc5 46.Rf1 Rd4 47.Re2 Re4 48.Rf1 Rd3 49.Re1 Fe7
 86/114	00:33	 726.021k	21.900k	-4,07	5.Rg1 Rd2 6.Rf1 Rd1 7.Rg1 Ff6 8.Rf1 Fe7 9.Rg1 Fc5+ 10.Rh1 Fa3 11.Rg1 Rd2 12.Rf1 Fe7 13.Rg1 Fc5+ 14.Rf1 Rd3 15.Re1 Fe7 16.Rf1 Rd4 17.Re2 Re4 18.Re1 Fb4+ 19.Re2 Fa5 20.Rf1 Fb6 21.Re2 Ff2 22.Rf1 Rf5 23.Re2 Rf4 24.Rd3 Fa7 25.Re2 Fb8 26.Rd2 Fd6 27.Rd3 Fe7 28.Rd2 Ff8 29.Rd3 Fa3 30.Rd2 Re4 31.Re1 Rd3 32.Rf1 Rd2 33.Rg1 Rc1 34.Rf1 Rc2 35.Rg1 Rb3 36.Rf1 Fc5 37.Re1 Rc2 38.Re2 Fd6 39.Rf1 Rd2 40.Rg1 Re2 41.Rh1 Fb4 42.Rg1 Fc5+ 43.Rh1 Re3 44.Rg1 Fd4 45.Rf1 Rd3 46.Re1 Fa1 47.Rf1 Rd2 48.Rg1 Fd4+ 49.Rh1 Re3 50.Rg1 Re4+ 51.Rf1
 87/114	00:35	 781.118k	22.163k	-4,07	5.Rg1 Rd2 6.Rf1 Rd1 7.Rg1 Ff6 8.Rf1 Fe7 9.Rg1 Fc5+ 10.Rh1 Fa3 11.Rg1 Rd2 12.Rf1 Fe7 13.Rg1 Fc5+ 14.Rf1 Rd3 15.Re1 Fe7 16.Rf1 Rd4 17.Re2 Re4 18.Re1 Fb4+ 19.Re2 Fa5 20.Rf1 Fb6 21.Re2 Ff2 22.Rf1 Rf5 23.Re2 Rf4 24.Rd3 Fa7 25.Re2 Fb8 26.Rd2 Fd6 27.Rd3 Fe7 28.Rd2 Ff8 29.Rd3 Fa3 30.Rd2 Fe7 31.Rd3 Fd8 32.Rd2 Fb6 33.Rd3 Fc5 34.Re2 Re4 35.Rd2 Re5 36.Rd3 Fa7 37.Re2 Rd5 38.Rf3 Ff2 39.Re2 Fd4 40.Rd2 Fg1 41.Rd3 Fb6 42.Rd2 Rc4 43.Re2 Ff2 44.Rf1 Fa7 45.Re2 Rc3 46.Rf1 Fc5 47.Re2 Ff2 48.Rf1 Fa7 49.Re2 Rd4 50.Rd1 Re4
 88/114+	00:37	 853.990k	22.476k	-4,01	5.Rg1
 88/114-	00:38	 856.778k	22.473k	-4,07	5.Rg1 Rd2
 88/114	00:39	 901.946k	22.639k	-4,07	5.Rg1 Rd2 6.Rf1 Rd1 7.Rg1 Ff6 8.Rf1 Fe7 9.Rg1 Fc5+ 10.Rf1 Rc2 11.Re2 Ff2 12.Rf1 Fb6 13.Re2 Fc7 14.Rf1 Rd2 15.Rg1 Re2 16.Rh1 Rd3 17.Rg1 Fb6+ 18.Rh1 Rd4 19.Rg1 Re4+ 20.Rh1 Fa5 21.Rg1 Fc7 22.Rf1 Re3 23.Rg1 Rd3 24.Rf1 Fd6 25.Rg1 Re3 26.Rf1 Rd2 27.Rg1 Re2 28.Rh1 Ff4 29.Rg1 Fe3+ 30.Rh1 Fd2 31.Rg1 Fe1 32.Rh1 Fb4 33.Rg1 Fc5+ 34.Rh1 Fd6 35.Rg1 Fb4 36.Rh1 Re1 37.Rg1 Fa5 38.Rh1 Fc3 39.Rg1 Fe5 40.Rh1 Re2 41.Rg1 Fd4+ 42.Rh1 Re3 43.Rg1 Rd2+ 44.Rh1 Fe5 45.Rg1 Fb8 46.Rf1 Re3 47.Re1 Fc7 48.Rf1 Fd6 49.Rg1 Rf4 50.Rf1 Fe7 51.Re2 Re4 52.Rf1
 89/114-	01:15	 1.641.213k	21.834k	-4,13	5.Rg1 Rd2
 89/114-	01:15	 1.641.419k	21.831k	-4,19	5.Rg1 Rd2
 89/114	01:20	 1.768.695k	22.049k	-4,23	5.Rg1 Rd2 6.Rf1 Rd1 7.Rg1 Ff6 8.Rf1 Fe7 9.Rg1 Fc5+ 10.Rf1 Rc2 11.Re2 Ff2 12.Rf1 Fb6 13.Re2 Fa5 14.Rf3 Fe1 15.Re2 Fc3 16.Rf3 Fe5 17.Re2 Rb3 18.Rd2 Fd4 19.Re2 Fc5 20.Rd2 Ff2 21.Rd1 Fg1 22.Rd2 Fc5 23.Rd3 Fd6 24.Rd2 Rc4 25.Re3 Rc3 26.Re2 Ff4 27.Re1 Rb2 28.Rf1 Fb8 29.Rg1 Rc2 30.Rh1 Fd6 31.Rg1 Fe5 32.Rf1 Rd2 33.Rg1 Fb2 34.Rh1 Re2 35.Rg1 Fe5 36.Rh1 Fd6 37.Rg1 Fb4 38.Rh1 Re1 39.Rg1 Fc5+ 40.Rh1 Fd6 41.Rg1 Fe5 42.Rh1 Re2 43.Rg1 Fd6 44.Rh1 Re3 45.Rg1 Rd2 46.Rf1 Rd1 47.Rg1 Re1 48.Rh1 Fc7 49.Rg1 Fa5 50.Rh1
 90/114	05:32	 8.977.601k	27.002k	-4,23	5.Rg1 Rd2 6.Rf1 Rc2 7.Re2 Fe5 8.Rf1 Rd1 9.Rg1 Re2 10.Rh1 Re3 11.Rg1 Re4 12.Rf1 Fd4 13.Re2 Ff2 14.Rd2 Rd4 15.Re2 Re5 16.Rf3 Rd5 17.Re2 Rc4 18.Rf1 Rb4 19.Re2 Fa7 20.Rd2 Rc4 21.Re2 Rd4 22.Rf3 Fb8 23.Re2 Fc7 24.Re1 Re4 25.Rf1 Re3 26.Re1 Fa5+ 27.Rf1 Rd3 28.Rg1 Fc3 29.Rf1 Fb4 30.Rg1 Rd2 31.Rh1 Rc1 32.Rg1 Fc3 33.Rh1 Rc2 34.Rg1 Fd4+ 35.Rh1 Fh8 36.Rg1 Rd3 37.Rh1 Re4 38.Rg1 Fd4+ 39.Rh1 Re3 40.Rg1 Re2+ 41.Rh1 Ff6 42.Rg1 Fe7 43.Rh1 Rd2 44.Rg1 Rd1 45.Rf1 Fb4 46.Rg1 Re2 47.Rh1 Fd2 48.Rg1 Re3 49.Rh1 Rd4 50.Rg1 Re4 51.Rh1 Fe3 52.h4
 91/114	06:55	 10.621.835k	25.578k	-4,25	5.Rg1 Rd2 6.Rf1 Rc2 7.Re2 Fe5 8.Rf1 Rd1 9.Rg1 Re2 10.Rh1 Re3 11.Rg1 Re4 12.Rf1 Fd4 13.Re2 Ff2 14.Rd2 Rd4 15.Re2 Re5 16.Rf3 Rd5 17.Re2 Rc4 18.Rd2 Fc5 19.Re2 Fd6 20.Rd2 Fc7 21.Re3 Ff4+ 22.Re4 Fd6 23.Re3 Rc3 24.Re2 Ff4 25.Rd1 Rb3 26.Re2 Rc2 27.Rf1 Rd1 28.Rg1 Fe5 29.Rf1 Fb2 30.Rg1 Fd4+ 31.Rf1 Ff6 32.Rg1 Re2 33.Rh1 Fe5 34.Rg1 Ff4 35.Rh1 Fb8 36.Rg1 Re1 37.Rh1 Fe5 38.Rg1 Fc3 39.Rh1 Fg7 40.Rg1 Fe5 41.Rh1 Fc7 42.Rg1 Re2 43.Rh1 Fd6 44.Rg1 Re1 45.Rh1 Fa3 46.Rg1 Re2 47.Rh1 Re3 48.Rg1 Rd2 49.Rf1 Fd6 50.Rg1 Fc7 51.Rf1 Fe5 52.Rg1
 92/114	14:04	 19.335.887k	22.902k	-4,25	5.Rg1 Rd2 6.Rf1 Rd3 7.Rg1 Fe5 8.Rf1 Re4 9.Re2 Rd4 10.Rd2 Fd6 11.Re2 Rc3 12.Re1 Rc2 13.Rf1 Fc7 14.Re2 Fb8 15.Re1 Rd3 16.Rf1 Fd6 17.Re1 Fb4+ 18.Rf1 Fc3 19.Rg1 Fa5 20.Rf1 Fb6 21.Re1 Ff2+ 22.Rf1 Re4 23.Re2 Fc5 24.Rf1 Rd3 25.Re1 Fa7 26.Rf1 Fd4 27.Re1 Fe3 28.Rf1 Fd2 29.Rg1 Re2 30.Rh1 Fa5 31.Rg1 Fb4 32.Rh1 Fd2 33.Rg1 Re1 34.Rh1 Fa5 35.Rg1 Rd1 36.Rf1 Fc3 37.Rg1 Re1 38.Rh1 Fb2 39.Rg1 Re2 40.Rh1 Rd3 41.Rg1 Re3 42.Rh1 Re2 43.Rg1 Ff6 44.Rh1 Rd2 45.Rg1 Fh8 46.Rh1 Re3 47.Rg1 Re2 48.Rh1 Rd3 49.Rg1 Fg7 50.Rh1 Re2 51.Rg1 Ff8
 93/114	18:26	 24.566.753k	22.202k	-4,25	5.Rg1 Rd2 6.Rf1 Rd3 7.Rg1 Fe5 8.Rf1 Re4 9.Re2 Rd4 10.Rd2 Fd6 11.Re2 Fb4 12.Rf3 Fe1 13.Re2 Ff2 14.Rd2 Rc4 15.Re2 Rc3 16.Rf1 Rb3 17.Re2 Rb2 18.Rd2 Fg1 19.Rd3 Fb6 20.Re2 Fa5 21.Rf1 Rc3 22.Rg1 Rd3 23.Rf1 Fb6 24.Re1 Fc5 25.Rf1 Re3 26.Re1 Fd6 27.Rf1 Rd2 28.Rg1 Fc5+ 29.Rh1 Fa3 30.Rg1 Re3 31.Rh1 Fd6 32.Rg1 Re2 33.Rh1 Fb4 34.Rg1 Fc5+ 35.Rh1 Ff8 36.Rg1 Fa3 37.Rh1 Fb2 38.Rg1 Re1 39.Rh1 Fg7 40.Rg1 Rd2 41.Rf1 Fh8 42.Rg1 Fe5 43.Rf1 Fg7 44.Rg1 Ff6 45.Rh1 Fa1 46.Rg1 Fb2 47.Rf1 Ff6 48.Rg1 Rd1 49.Rh1 Fb2 50.Rg1 Fg7 51.Rf1 Fe5 52.Rg1
 94/114+	18:51	 25.203.678k	22.276k	-4,19	5.Rg1
 94/114+	19:09	 25.672.708k	22.330k	-4,13	5.Rg1
 94/114-	22:08	 29.398.565k	22.124k	-4,19	5.Rg1 Re3
 94/114	22:25	 29.812.323k	22.157k	-4,19	5.Rg1 Re3 6.Rh1 Fe5 7.Rg1 Re2 8.Rh1 Rd3 9.Rg1 Rc3 10.Rh1 Rc2 11.Rg1 Ff4 12.Rf1 Rb2 13.Rg1 Rb3 14.Rf1 Ra2 15.Re1 Fb8 16.Rd2 Fe5 17.Rd3 Fd6 18.Re2 Fc7 19.Rd1 Fa5 20.Rc2 Fb4 21.Rd3 Fc5 22.Re4 Fd6 23.Rd3 Ff4 24.Re2 Ra1 25.Rf1 Fc7 26.Rg1 Rb1 27.Rh1 Fd6 28.Rg1 Ra1 29.Rf1 Ff4 30.Rg1 Fc7 31.Rh1 Rb1 32.Rg1 Rc1 33.Rf1 Fb6 34.Re2 Rb2 35.Rd2 Rb3 36.Re1 Fg1 37.Rd2 Rb2 38.Re2 Fa7 39.Rd2 Fb6 40.Rd1 Fd4 41.Rd2 Rb1 42.Re2 Rc2 43.Rf1 Fb6 44.Re2 Fc7 45.Rf1 Rd2 46.Rg1 Re2 47.Rh1 Fa5 48.Rg1 Fd2 49.Rh1 Fb4 50.Rg1 Fe7 51.Rh1 Rd3
 95/114+	22:58	 30.699.696k	22.275k	-4,13	5.Rg1
 95/114+	23:04	 30.867.591k	22.299k	-4,07	5.Rg1
 95/114+	23:11	 31.067.546k	22.328k	-3,98	5.Rg1
 95/114-	23:13	 31.136.268k	22.339k	-4,05	5.Rg1 Fd4+
 95/114+	23:34	 31.706.969k	22.417k	-3,94	5.Rg1
 95/114+	23:44	 32.004.367k	22.467k	-3,63	5.Rg1
 95/114-	23:44	 32.004.507k	22.467k	-4,07	5.Rg1 Fh8
 95/114+	23:46	 32.064.430k	22.475k	-3,51	5.Rg1
 95/115-	39:11	 49.985.414k	21.259k	-4,14	5.Rg1 Fe5

Code: Select all

Houdini_15_x64:
 4/8	00:00	 215	215k	-0,02	5.Rg1 Fd4+ 6.Rh1 Fa7 7.h4
 5/8	00:00	 462	462k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Rf4+ 8.Rh1
 6/11	00:00	 829	829k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1
 7/12	00:00	 2k	2.103k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Rf4+ 8.Rf1 Fe3 9.Re2
 8/12	00:00	 4k	2.100k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rf2 9.h4
 9/14	00:00	 9k	3.042k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fd4+ 10.Rf1
 10/17	00:00	 33k	6.628k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1
 11/20	00:00	 100k	10.038k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 Fd4 11.h4 g4 12.h5 Fe3 13.h6 Fxh6 14.Rg1
 12/20	00:00	 179k	11.212k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Re3 12.g5
 13/22	00:00	 270k	12.267k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.Rg1 Fd4+ 13.Rf1
 14/26	00:00	 474k	13.535k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.Rg1 Fd4+ 13.Rf1 Re3 14.g5
 15/26	00:00	 755k	14.238k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.Rg1 Fd4+ 13.Rf1 Fe3 14.Re1 Ff2+ 15.Rf1
 16/26	00:00	 1.052k	14.819k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.Rg1 Rd2 13.Rh1 Re2 14.g5 Rf1 15.g6 Re2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1
 17/30	00:00	 1.500k	14.854k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.Rg1 Rd2 13.Rh1 Rd1 14.g5 Fd4 15.g6 Rd2 16.g7 Fxg7 17.Rg1
 18/30	00:00	 2.021k	15.310k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rb1 16.Rg1
 19/33	00:00	 2.662k	15.387k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1
 20/33	00:00	 3.527k	15.815k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1
 21/33	00:00	 4.595k	16.123k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Fd4+ 20.Rh1
 22/33	00:00	 5.444k	15.964k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re3 20.Rh1
 23/35	00:00	 6.701k	15.955k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1
 24/36	00:00	 7.868k	15.894k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1
 25/38	00:00	 8.909k	15.909k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Re2+ 24.Rh1
 26/41	00:00	 10.690k	15.790k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fg7 24.Rh1 Rd2 25.Rg1
 27/43	00:00	 11.772k	15.675k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Rf4+ 24.Rh1 Fg7 25.Rg1
 28/44	00:00	 14.917k	15.718k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Rf4+ 24.Rh1 Fg7 25.Rg1 Rf5 26.Rh1
 29/45	00:01	 17.453k	15.597k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fc3 24.Rh1 Fg7 25.Rg1 Rd2 26.Rh1 Rc1 27.Rg1 Rd2 28.Rh1
 30/47	00:01	 20.228k	15.536k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fc3 24.Rh1 Fg7 25.Rg1 Rd2 26.Rh1 Rc1 27.Rg1 Rd2 28.Rh1
 31/49	00:01	 22.430k	15.279k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fc3 24.Rh1 Fg7 25.Rg1 Fh8 26.Rh1 Rd2 27.Rg1 Fg7 28.Rh1 Re2 29.Rg1 Re3 30.Rh1 Fe5 31.Rg1 Rd2 32.Rh1
 32/56	00:01	 26.535k	15.436k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fc3 24.Rh1 Fg7 25.Rg1 Fh8 26.Rh1 Rd2 27.Rg1 Fg7 28.Rh1 Rc1 29.Rg1 Rb1 30.Rh1 Fc3 31.Rg1 Fd4+ 32.Rh1 Fc3 33.Rg1
 33/57	00:01	 30.707k	15.438k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fc3 24.Rh1 Fg7 25.Rg1 Fh8 26.Rh1 Rd2 27.Rg1 Fg7 28.Rh1 Rc1 29.Rg1 Fh8 30.Rh1 Rd2 31.Rg1
 34/57	00:02	 36.221k	15.505k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fc3 24.Rh1 Fg7 25.Rg1 Rd2 26.Rh1 Rc1 27.Rg1 Fh8 28.Rh1 Rd2 29.Rg1 Fg7 30.Rh1
 35/57	00:02	 43.272k	15.459k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fc3 24.Rh1 Fg7 25.Rg1 Fh8 26.Rh1 Rd2 27.Rg1 Fg7 28.Rh1 Rc1 29.Rg1 Fe5 30.Rh1 Fh8 31.Rg1 Fg7 32.Rh1 Rd2 33.Rg1
 36/57	00:03	 48.764k	15.451k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fc3 24.Rh1 Fg7 25.Rg1 Ff8 26.Rh1 Re2 27.Rg1 Re1 28.Rh1 Rd1 29.Rg1 Re2 30.Rh1 Re3 31.Rg1
 37/57	00:03	 57.500k	15.333k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fc3 24.Rh1 Fg7 25.Rg1 Fe5 26.Rh1 Fh8 27.Rg1 Fg7 28.Rh1 Re4 29.Rg1 Ff8 30.Rh1 Rf4 31.Rg1 Re3 32.Rh1 Re2 33.Rg1 Re1 34.Rh1 Rd1 35.Rg1 Re2 36.Rh1 Re3 37.Rg1 Re2 38.Rh1
 38/67	00:04	 62.976k	15.315k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fc3 24.Rh1 Fg7 25.Rg1 Fd4 26.Rh1 Fe5 27.Rg1 Fg7 28.Rh1 Re4 29.Rg1 Ff8 30.Rh1 Rf4 31.Rg1 Re3 32.Rh1 Re2 33.Rg1 Re1 34.Rh1 Rd1 35.Rg1 Re2 36.Rh1 Re3 37.Rg1 Re2 38.Rh1
 39/67	00:04	 74.326k	15.181k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fc3 24.Rh1 Fg7 25.Rg1 Rd3 26.Rh1 Re2 27.Rg1 Fh8 28.Rh1 Rd2 29.Rg1 Rd3 30.Rh1 Rc4 31.Rg1 Fc3 32.Rh1 Rd5 33.Rg1 Fd4+ 34.Rh1 Fg7 35.Rg1 Re4 36.Rh1 Rf4 37.Rg1 Rf5 38.Rh1 Ff8 39.Rg1 Rf4 40.Rh1 Re3 41.Rg1 Re2 42.Rh1 Re3 43.Rg1
 40/77	00:05	 86.856k	15.173k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fc3 24.Rh1 Fg7 25.Rg1 Fe5 26.Rh1 Fh8 27.Rg1 Fg7 28.Rh1 Re4 29.Rg1 Ff8 30.Rh1 Rf4 31.Rg1 Re3 32.Rh1 Re2 33.Rg1 Re1 34.Rh1 Rd1 35.Rg1 Re2 36.Rh1 Re3 37.Rg1 Re2 38.Rh1
 41/77	00:06	 97.865k	14.927k	-0,02	5.Rg1 Fd4+ 6.Rh1 Re3 7.Rg1 Fa1 8.Rh1 Rd3 9.Rg1 Fc3 10.Rh1 g4 11.hxg4 Fg7 12.g5 Rd2 13.g6 Rd1 14.Rg1 Rc2 15.Rf1 Rd2 16.Rg1 Fd4+ 17.Rh1 Rd3 18.g7 Fxg7 19.Rg1 Re2 20.Rh1 Rd2 21.Rg1 Fd4+ 22.Rh1 Re3 23.Rg1 Fc3 24.Rh1 Fg7 25.Rg1 Fh8 26.Rh1 Rd2 27.Rg1 Rd3 28.Rh1 Rc4 29.Rg1 Fc3 30.Rh1 Rd5 31.Rg1 Fd4+ 32.Rh1 Fg7 33.Rg1 Re4 34.Rh1 Rf4 35.Rg1 Rf5 36.Rh1 Ff8 37.Rg1 Rf4 38.Rh1 Re3 39.Rg1 Re2 40.Rh1 Re3 41.Rg1

Vinvin
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Re: Draw position bishop+g3 pawn vs g2 pawn

Post by Vinvin » Thu Nov 27, 2014 1:28 pm

This position come from Serper vs. Nakamura (2004)
http://en.wikipedia.org/wiki/Fortress_% ... n_a_corner
Nxe4!
[d]8/8/8/3k2p1/4p3/2b1P1pP/4KNP1/8 w - - 0 1

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hgm
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Re: Draw position bishop+g3 pawn vs g2 pawn

Post by hgm » Thu Nov 27, 2014 1:37 pm

Solving this KBK+Pawns end-game by retrograde analysis would just take a couple of seconds. So it seems silly to think 40 minutes about it in the first place.

yanquis1972
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Re: Draw position bishop+g3 pawn vs g2 pawn

Post by yanquis1972 » Thu Nov 27, 2014 1:52 pm

i agree, time spent is irrelevant, simply a matter of "houdini has basic knowledge that stockfish lacks"...since SF seems to be a pure elo project i dont know if they will implement it either. but im always a fan of sacrificing a little speed if it means better evaluations.

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Re: Draw position bishop+g3 pawn vs g2 pawn

Post by Vinvin » Thu Nov 27, 2014 2:19 pm

yanquis1972 wrote:i agree, time spent is irrelevant, simply a matter of "houdini has basic knowledge that stockfish lacks"...since SF seems to be a pure elo project i dont know if they will implement it either. but im always a fan of sacrificing a little speed if it means better evaluations.
I've the same opinion, I feel annoyed when a human (500 elo lower) play a better move than a computer.

noctiferus
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Re: Draw position bishop+g3 pawn vs g2 pawn

Post by noctiferus » Thu Nov 27, 2014 4:12 pm

Houdini and Gull 3 get it immediately

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Re: Draw position bishop+g3 pawn vs g2 pawn

Post by noctiferus » Thu Nov 27, 2014 4:20 pm

[d] 8/8/8/6p1/8/6pP/4k1P1/b6K w - - 4 5
in this case, Gull3 too gets at once -0.03

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Re: Draw position bishop+g3 pawn vs g2 pawn

Post by Paloma » Thu Nov 27, 2014 7:29 pm


Edmund
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Re: Draw position bishop+g3 pawn vs g2 pawn

Post by Edmund » Thu Nov 27, 2014 9:17 pm

hgm wrote:Solving this KBK+Pawns end-game by retrograde analysis would just take a couple of seconds. So it seems silly to think 40 minutes about it in the first place.
After all this is still a 7 men endgame.
What assumptions would you make to be able to solve this endgame in just a couple of seconds?

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Re: Draw position bishop+g3 pawn vs g2 pawn

Post by Evert » Thu Nov 27, 2014 9:31 pm

Edmund wrote: After all this is still a 7 men endgame.
What assumptions would you make to be able to solve this endgame in just a couple of seconds?
Fix all pawns in place (don't move them, they get taken immediately anyway). Mark as won any position where black can play Kxg2. Recursively mark all precursors as won. The given position ends up not being marked as won, hence it's a draw.

Now, in general you need to be careful about considering pawn slices after pawn trade, and you need to consider whether the position after Kxg2 is actually won, but that can be fairly easily verified statically in the current position.

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