may run faster per node, but mine will not probe the transposition table for a draft less than two. So, if the average move count of a position is 32, then the average lowest draft entry will be around 1,024. That means that the table is being hit a thousand times less frequently than it would in a search where positions down at the bottom ply are probe candidates.
Code: Select all
New LSB match high watermark: 1
PETBase: items: 536,870,912 probe: 1 match: 0 stash: 0 usage: 0 load: 0
New LSB match high watermark: 3
PETBase: items: 536,870,912 probe: 3 match: 0 stash: 0 usage: 0 load: 0
New LSB match high watermark: 8
PETBase: items: 536,870,912 probe: 13 match: 0 stash: 2 usage: 2 load: 3.72529e-09
New LSB match high watermark: 9
PETBase: items: 536,870,912 probe: 994 match: 35 stash: 940 usage: 940 load: 1.75089e-06
New LSB match high watermark: 10
PETBase: items: 536,870,912 probe: 2,861 match: 100 stash: 2,742 usage: 2,742 load: 5.10737e-06
New LSB match high watermark: 11
PETBase: items: 536,870,912 probe: 4,162 match: 176 stash: 3,967 usage: 3,967 load: 7.38911e-06
New LSB match high watermark: 13
PETBase: items: 536,870,912 probe: 10,125 match: 1,070 stash: 9,036 usage: 9,036 load: 1.68309e-05
New LSB match high watermark: 21
PETBase: items: 536,870,912 probe: 30,724 match: 7,583 stash: 23,122 usage: 23,122 load: 4.30681e-05
New LSB match high watermark: 31
PETBase: items: 536,870,912 probe: 43,050 match: 12,650 stash: 30,382 usage: 30,382 load: 5.65909e-05
New LSB match high watermark: 35
PETBase: items: 536,870,912 probe: 428,425 match: 176,808 stash: 251,604 usage: 251,599 load: 0.00046864
New LSB match high watermark: 36
PETBase: items: 536,870,912 probe: 960,855 match: 406,264 stash: 554,594 usage: 554,569 load: 0.00103297
New LSB match high watermark: 39
PETBase: items: 536,870,912 probe: 5,118,364 match: 2,361,751 stash: 2,757,553 usage: 2,756,376 load: 0.00513415
New LSB match high watermark: 40
PETBase: items: 536,870,912 probe: 5,252,009 match: 2,426,283 stash: 2,826,711 usage: 2,825,470 load: 0.00526285
New LSB match high watermark: 42
PETBase: items: 536,870,912 probe: 5,803,341 match: 2,710,008 stash: 3,094,620 usage: 3,093,050 load: 0.00576125
New LSB match high watermark: 47
PETBase: items: 536,870,912 probe: 43,296,577 match: 23,773,362 stash: 19,563,417 usage: 19,499,457 load: 0.0363206
New LSB match high watermark: 50
PETBase: items: 536,870,912 probe: 49,368,268 match: 27,290,368 stash: 22,126,743 usage: 22,044,339 load: 0.0410608
New LSB match high watermark: 51
PETBase: items: 536,870,912 probe: 190,262,227 match: 106,652,319 stash: 83,814,737 usage: 82,339,813 load: 0.15337
New LSB match high watermark: 53
PETBase: items: 536,870,912 probe: 1,173,452,763 match: 664,282,633 stash: 510,540,683 usage: 378,076,448 load: 0.704222
New LSB match high watermark: 58
PETBase: items: 536,870,912 probe: 1,505,384,650 match: 854,786,402 stash: 652,406,307 usage: 429,376,467 load: 0.799776
New LSB match high watermark: 59
PETBase: items: 536,870,912 probe: 14,762,947,573 match: 8,172,536,319 stash: 6,610,981,101 usage: 536,870,911 load: 1