Author: William Bryant
Date: 13:28:09 09/23/00
I am adding a specific Mate search to my program and trying various combinations of search settings. I was curious about the setting others are using. For a search for mate (in an unknown number of moves) I was going to set Beta to Infinity (32768), Alpha to a mate limit (32768 - 300) and use iterative deepening, no PVS, ignore fail lows at the root (which means it didn't find a mate at that depth). I was also going to use NULL moves but no PVS since until mate is found, you do not have a best move. For a search for mate in N, I was going to change alpha to Infinity - plydepth (32768 - (N * 2)), and set the initial iterative depth to N*2 rather than use iterative deepening. This should say if there is a mate at this depth. Does this sound like a reasonable approach? Any comments would be appreciated. William wbryant@ix.netcom.com
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