Author: Howard Exner
Date: 20:55:56 11/20/97
Here are 5 positions to test on your computer programs. The theme is how to play when the bishop is the opposite color of the queening square. 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/8/8/1K6 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; The first three are wins and the last two are draws. I tested these on Rebel 8. The results are: K6-233 60Mb Hash 1. Not solved by 15:00 2. 0:51 3. 0:16 4. 0:21 5. Not solved by 15:00 Problems 1 and 5 are difficult for Rebel 8. A known issue with Rebel 8 is it's difficulty with doubled pawns on the a or h files. An old Maresch test position uncovered this. Could others post some of there results for these 5 problems. Maybe 1 and 5 are difficult for all programs?
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