Simplify "fail high upon reduction" in null search
authorMarco Costalba <mcostalba@gmail.com>
Mon, 8 Jul 2013 05:23:30 +0000 (07:23 +0200)
committerMarco Costalba <mcostalba@gmail.com>
Mon, 8 Jul 2013 05:23:30 +0000 (07:23 +0200)
commit62d38f0196b077a6f67213f5fbbbb28eb60e7d92
tree59a4d8b4d170daeb9cebb9e06bb15fd1fc8f3a40
parent7e575512ae53c9992da2e0fe592617beba7bba07
Simplify "fail high upon reduction" in null search

Do not use threat move to detect the condition. This
let us to retire the big allows() function.

Test at short TC was within 50% score:
LLR: -2.95 (-2.94,2.94)
Total: 38272 W: 7941 L: 7940 D: 22391

To be verified with reverse long TC

bench: 4191565
src/search.cpp