Author: José Carlos
Date: 09:51:06 04/20/04
Go up one level in this thread
On April 20, 2004 at 12:35:06, Janos Keinrath wrote: >Here is a position, where you can test your engine zugzwang detection. >[D]8/8/8/2p5/1pp5/brpp4/1pprp2P/qnkbK3 w - - > >The solution is 1.h3 mate in 15. (1.h4? only draw) >Crafty can't solve this after reaching depth 60. Are you sure this is a null move issue? Averno finds h3 pretty quickly, and its null move is not partilarly smart :) Averno v0.72hi WB2 37 MB: 2 00:00 -59.00 h2h4 a1a2 3 00:00 -58.85 h2h4 a1a2 h4h5 4 00:00 -58.95 h2h4 a1a2 h4h5 a2a1 5 00:00 -57.75 h2h4 5 00:00 -55.75 h2h4 5 00:00 -55.75 h2h4 a1a2 e1f2 e2e1Q f2e1 d1f3 5 00:00 -55.00 h2h3 a1a2 e1f2 e2e1R f2e1 d1f3 6 00:00 -55.65 h2h3 a1a2 6 00:00 -58.85 h2h3 a1a2 6 00:00 -58.85 h2h3 a1a2 h3h4 a2a1 h4h5 a1a2 6 00:00 -57.65 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 7 00:00 -53.15 h2h4 7 00:00 -45.75 h2h4 7 00:00 -45.75 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 8 00:00 -45.75 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8Q 9 00:00 -45.60 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8Q a1a2 10 00:00 -45.60 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8Q a1a2 h8h2 11 00:00 -43.70 h2h4 11 00:00 -43.35 h2h4 11 00:00 -43.35 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8Q a1a2 h8h5 a2a1 12 00:00 0.00 h2h4 12 00:00 0.00 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8N a1a2 h8g6 a2a1 g6h8 13 00:00 0.00 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8N a1a2 h8g6 a2a1 g6h8 14 00:00 0.00 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8N a1a2 h8g6 a2a1 g6h8 15 00:00 0.00 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8N a1a2 h8g6 a2a1 g6h8 16 00:00 0.00 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8N a1a2 h8g6 a2a1 g6h8 17 00:00 0.00 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8N a1a2 h8g6 a2a1 g6h8 18 00:00 0.00 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8N a1a2 h8g6 a2a1 g6h8 19 00:00 0.00 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8N a1a2 h8g6 a2a1 g6h8 20 00:01 0.00 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8N a1a2 h8g6 a2a1 g6h8 21 00:02 0.00 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8N a1a2 h8g6 a2a1 g6h8 22 00:03 0.00 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8N a1a2 h8g6 a2a1 g6h8 23 00:07 0.00 h2h4 a1a2 h4h5 a2a1 h5h6 a1a2 h6h7 a2a1 h7h8N a1a2 h8g6 a2a1 g6h8 23 00:09 M13 h2h3 a1a2 h3h4 a2a1 h4h5 a1a2 h5h6 a2a1 h6h7 a1a2 h7h8N a2a1 h8g6 a1a2 g6f4 a2a1 f4e6 a1a2 e6c5 a2a1 c5e4 a1a2 e4d6 a2a1 24 00:14 M14 h2h3 a1a2 h3h4 a2a1 h4h5 a1a2 h5h6 a2a1 h6h7 a1a2 h7h8N a2a1 h8g6 a1a2 g6f4 a2a1 f4e6 a1a2 e6c5 a2a1 c5e4 a1a2 e4d6 a2a1 d6c4 a1a2 c4a5 a2a1 a5b3 Arena says mate in 14 when Averno is giving 99972, which means mate in 15. The strange thing, that I can't check now, is the mate in 14 one iteration before. José C.
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