Author: Howard Exner
Date: 18:18:38 11/21/97
Go up one level in this thread
On November 21, 1997 at 20:51:29, John Stanback wrote: >This was a nice test for Zarkov since it made me decide to improve my >code for pawns on rook file -- I did not have anything in there for >multiple pawns. Endings like this I think occur often enough to justify the doubled pawn codes. Could prevent an embarrising moment for a programmer in tournament event. > >After the fix, Zarkov on a K6-225 does as follows: > >1. 8s (solution: Kd5 Kb8 Kd6 b6 a6 Kc8 Kc6 Kb8 Bg3+ Ka8 Bd6 b5 Be5 >+6pawns) The source for this problem (Chess Life - Tal Shaked issue) claims a draw for Kd5 with b7-b5! (thus the point of a4). It doesn't however give any further analysis. >2. 0s >3. 61s >4. 8s >5. not solved > > >On November 21, 1997 at 18:30:03, Howard Exner wrote: > >>k7/pp6/8/P7/3K4/P7/P4B2/8 w - - id"a3-a4 - Wrong Bishop" bm a3 a4; >>5k2/8/7P/8/8/8/K6P/1B6 w - - id"B-h7 - Wrong Bishop" bm b1h7; >>8/7p/6p1/3k4/B5PP/8/K7/8 w - - id"a4e8 - Wrong Bishop" bm a4e8; >>8/6p1/8/3kP2P/6K1/8/8/2b5 w - - id"h5-h6 - Wrong Bishop" bm h5h6; >>8/8/pp6/3b2K1/1P6/PN2k3/8/8 w - - id"Na5 draw - Wrong Bishop" bm b3a5; >> >>Here is a summarry of results for this test. Note that position #3 >>has been corrected to allow for only one solution (thanks to Ernst >>Heinz). >> >> Rebel8 Crafty CSTal Genius3 DarkThought >> K6-200 P5-233 P6-200 486-33 Alpha 500 >> >>1 X X 0:33 ? 0:12 >>2 0:51 0:00 0:00 ? 0:00 >>3 0:17 ? ? ? ? >>4 0:21 0:58 0:30 ? 0:00 >>5 X X X 1:28 1:19 >> >>The original pos 3 was solved by Crafty,CTal and >>DarkThought and they will no doubt solved the slightly >>modified #3 as well. >> >>Also, Ernst may have found an alternate solution to #5. >>Asked for some analysis of Kd5 in another post.
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