Author: Steven Edwards
Date: 15:29:05 09/24/03
I had my toolkit compile Crafty's 945,950,820 byte enormous.pgn game file into an opening book as a stress test. The 1,511,728 games required about 14 hours to process and this resulted in an opening book position library with 34,961,266 entries. All positions reached in the first 48 ply for each game were stored. From the initial array, here are results: (M: move, B: expectation, C: wins losses draws) M:Na3 B:0.513889 C:[35 33 4] M:Nc3 B:0.536692 C:[1731 1428 970] M:Nf3 B:0.557719 C:[45135 31189 44485] M:Nh3 B:0.388889 C:[35 59 14] M:a3 B:0.495726 C:[238 243 104] M:a4 B:0.519231 C:[74 68 14] M:b3 B:0.520094 C:[2231 1999 1543] M:b4 B:0.539487 C:[3870 3192 1523] M:c3 B:0.455959 C:[132 166 88] M:c4 B:0.556381 C:[43961 31207 37937] M:d3 B:0.461202 C:[284 346 169] M:d4 B:0.557061 C:[194871 138643 159189] M:e3 B:0.448687 C:[611 779 247] M:e4 B:0.54247 C:[277357 218680 194772] M:f3 B:0.503145 C:[75 74 10] M:f4 B:0.487736 C:[3349 3567 1972] M:g3 B:0.548208 C:[4393 3263 4064] M:g4 B:0.528992 C:[558 489 143] M:h3 B:0.469697 C:[64 74 27] M:h4 B:0.476974 C:[64 71 17]
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