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Author SHA1 Message Date
Joseph EllisandStéphane Nicolet 673841301b Simplify multi-cut condition 
Now that the multi-cut condition is safer, we can avoid the cost of the sub-search.

STC:
https://tests.stockfishchess.org/tests/view/6165fd9283dd501a05b0b2fe
LLR: 2.93 (-2.94,2.94) <-2.50,0.50>
Total: 18648 W: 4745 L: 4600 D: 9303
Ptnml(0-2): 47, 2111, 4887, 2208, 71

LTC:
https://tests.stockfishchess.org/tests/view/616629ea83dd501a05b0b320
LLR: 2.96 (-2.94,2.94) <-2.50,0.50>
Total: 41704 W: 10407 L: 10302 D: 20995
Ptnml(0-2): 35, 4425, 11823, 4538, 31

closes https://github.com/official-stockfish/Stockfish/pull/3738

Bench: 5905086
 2021-10-13 23:34:23 +02:00
Joseph HellisandMarco Costalba 619d66b7ab Remove supporting pawns 
Tested in no-regression mode

Passed both STC
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 44957 W: 7984 L: 7903 D: 29070

and LTC
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 12396 W: 1916 L: 1783 D: 8697

Bench: 7907885
 2014-04-17 08:45:31 +02:00
jhellis3 7323231786 Tweak Mobility Area 
Only consider pawns and the king as restricting.
 2013-05-01 02:37:50 -05:00
jhellis3andMarco Costalba 3ce43c20de Stop search if only 1 legal move 
There is no point searching a move that is forced.
It wastes time while allowing computer opponents to
fill hash with 100% accuracy.

[edit: Condition moved together with "easy move" ones]

Bench identical: 4922272
 2013-03-04 08:30:55 +01:00