Quiet history on beta cutoff #106
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Update history also on a beta cutoff. The beta cutoffs are the best moves found in the position, so encouraging trying them earlier is obviously better than only encouraging moves that beat alpha but not beta.
Passes easily:
ELO | 26.13 +- 11.31 (95%)
SPRT | 10.0+0.1s Threads=1 Hash=32MB
LLR | 2.98 (-2.94, 2.94) [0.00, 5.00]
Games | N: 2105 W: 688 L: 530 D: 887
http://chess.grantnet.us/viewTest/3944/
And is probably slightly better than only updating on beta cutoffs (beta only vs this):
ELO | -2.90 +- 4.76 (95%)
SPRT | 60.0+0.6s Threads=1 Hash=128MB
LLR | -3.02 (-2.94, 2.94) [0.00, 5.00]
Games | N: 10194 W: 2501 L: 2586 D: 5107
http://chess.grantnet.us/viewTest/3946/