Introduce a new counter move history penalty
authorVoyagerOne <excelgeek@gmail.com>
Tue, 24 Mar 2015 23:00:31 +0000 (23:00 +0000)
committerJoona Kiiski <joona.kiiski@gmail.com>
Tue, 24 Mar 2015 23:04:08 +0000 (23:04 +0000)
commite51965aa57ddc50d04016e3622da49cf9f8e6238
tree16d29df8cd315399c1aa3aae9aefb6b4140d274d
parenta7381d5e8159a08d0df7e8312bdbea8fc084da5c
Introduce a new counter move history penalty

Extra penalty for TT move in previous ply when it gets refuted

STC:

LLR: 2.94 (-2.94,2.94) [-1.50,4.50]
Total: 31303 W: 6216 L: 6025 D: 19062

LTC:

LLR: 2.97 (-2.94,2.94) [0.00,6.00]
Total: 6950 W: 1189 L: 1054 D: 4707

Bench: 8191926

Resolves #309
src/search.cpp