Thursday, May 19, 2011

Perft for Checkers for Depth 24

I computed the perft number for 8x8 checkers for depth 24 with the same distributed implementation I used earlier for depths up to 23. Below you see the perft breakdown per move (called "divide") from the initial position for depths 22, 23, and 24.

move         divide(22)       divide(23)        divide(24)
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12-16:  243598269855110 1123463594881857  5192042148594780
11-16:  246743868125768 1131373985922218  5248615918291379
11-15:  209016678583301  984253557821317  4602138522979438
10-15:  215412869777867 1000606302770349  4643700995955222
10-14:  184865466345796  856779998157523  3988937724259353
 9-14:  213736468971938 1003310451936358  4712325943133747
 9-13:  288999100078322 1337748969176591  6263620622082081
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       1602372721738102 7437536860666213 34651381875296000