Author: Robert Hyatt
Date: 11:00:21 03/05/01
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On March 04, 2001 at 10:28:01, Sune Larsson wrote: > > [D]8/5pb1/7p/6PK/7P/Pk6/8/8 w - - 0 1 > > Ellison, 1972 > > No story around this one, except to show how tricky endgames with > very few pieces can be. One mistake and you're dead... > Here white is fighting for the draw. After 1.gxh6 he will find the > way, to the remaining black pawn, very long... > > Test: White to move and draw. It might be interesting to check if your > program can make it in a) blitz (5-10 min) b) rapidgame (30-60 min) > c) tournamentlevel (40/2). The solution is further down. > > Sune > > > > > > > > > > > > >Ellison, 1972 > >1.g6 f6 [1...f5 2.a4] 2.Kg4 Kxa3 3.h5 [3.Kf5? h5 4.Ke6 Bh8 5.Kf5 Kb4 6.g7 Bxg7 >7.Kg6 Bh8 8.Kxh5 Kc5 9.Kg6 Kd6 10.h5 Ke6 11.Kh7 f5] 3...Kb4 4.Kf5 Kc5 5.Ke6 Bh8 >6.Kf7 f5 7.g7 Bxg7 8.Kxg7 f4 9.Kxh6 ½-½ Takes me just under a minute to find g6... but the score is -.46... If Crafty has a search time limit of 30 seconds or longer it will find this on my quad here... Anything less than 30 seconds and it will play gf. In a real game, I think it would find this in half that time, as the EGTB stuff would be in memory already from previous searches, etc.
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