Author: Michael Fuhrmann
Date: 17:43:22 01/03/01
Go up one level in this thread
On January 03, 2001 at 20:06:39, Dann Corbit wrote: >On January 03, 2001 at 19:51:25, Michael Fuhrmann wrote: > >>[D] 8/5p2/8/4P1p1/4bk2/8/8/4BK2 b - - 0 63 >> >>This position was reached in a comp-comp blitz game on my computer between >>crafty 17.14 and little goliath. I was surprised that crafty (black) did not >>play Kxe5, which wins, and instead played g4, which eventually draws. >> >>Later I let crafty analyse the position, and it doesn't really seem to settle on >>Kxe5 until ply 16 or thereabouts (about 2 1/2 minutes on my computer). > >Interesting. Phalanx takes the pawn right off the bat and never wavers. One >thing I have noticed is that Phalanx has an amazing ability to find moves that >seem tough to other programs for some reason. > >E:\programme\winboard\Phalanx>Phalanx -l+ -t32768 -r900 -o- >tellics set 1 Phalanx XXII >primary book ./pbook.phalanx, 48749 bytes >secondary book ./sbook.phalanx, 4831506 bytes >learning file ./learn.phalanx, 262144 bytes >[ white, 1 ] >post >post on >[ white, 1 ] >level 40 240 2400 >level: 40 moves in 240:00, increment 2400 seconds >[ white, 1 ] > >[ white, 1 ] >8/5p2/8/4P1p1/4bk2/8/8/4BK2 b - - 0 63 > >8/5p2/8/4P1p1/4bk2/8/8/4BK2 b - - 0 63 > -> increment adds 440 s to soft time limit > -> soft time limit 611.42 s > -> hard time limit 12000 s > 7 -> 0:00.69 142610 0 turns > 8 183 102 209429 Kf4xe5 Be1-d2 Ke5-f5 Bd2-c3 Kf5-g6 Kf1-f2 > Pf7-f5 Kf2-g3 > 8 -> 0:01.78 397592 0 turns > 9 189 338 761905 Kf4xe5 Be1-c3 Ke5-f5 Kf1-f2 Kf5-g6 Kf2-e3 > Pf7-f5 Ke3-d4 Kg6-h5 Kd4-e5 > 9 -> 0:05.14 1218019 0 turns > 10 189 699 1658891 Kf4xe5 Be1-d2 Ke5-f5 > 10 -> 0:11.04 2693763 0 turns > 11 190 1391 3334115 Kf4xe5 Be1-d2 Ke5-f5 Bd2-c3 Kf5-g6 Kf1-f2 > Pf7-f5 Kf2-g3 Kg6-h5 Bc3-d2 > 11 -> 0:22.98 5683030 0 turns > 12 189 3124 7726957 Kf4xe5 Be1-c3 Ke5-f4 > 12 -> 0:58.47 14603794 0 turns > 13 190 6907 16862826 Kf4xe5 Be1-c3 Ke5-f4 Bc3-f6 Pg5-g4 Kf1-f2 > 13 -> 1:56.11 28378644 0 turns > 14 191 14199 34221964 Kf4xe5 Be1-c3 Ke5-f4 Bc3-f6 Pg5-g4 Kf1-f2 > Pg4-g3 Kf2-e2 Be4-f3 Ke2-d2 Bf3-d5 Kd2-e2 > 14 -> 4:08.61 58880889 0 turns > 15 197 31793 73424252 Kf4xe5 Be1-c3 Ke5-f4 Bc3-f6 Pg5-g4 Kf1-f2 > Pg4-g3 Kf2-e2 Be4-d5 Ke2-f1 Kf4-f3 Kf1-e1 > Bd5-c4 Ke1-d2 Bc4-a6 Kd2-c3 Kxe5 seems so natural and obvious - at least, for a human. Black needs the 2-pawn material advantage to win. After g4, white protects the pawn with its bishop, and the opposite bishops' ending draws.
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