From 20e92895af45ec9599110506eea231fc689c05ba Mon Sep 17 00:00:00 2001 From: VoyagerOne Date: Fri, 10 Apr 2015 17:50:19 -0400 Subject: [PATCH] Removed extra condition (history < 0) in LMR to help sync up with move ordering. LMR condition is now cmh+history<0 Instead of history<0 OR cmh+history<0 STC: LLR: 2.96 (-2.94,2.94) [-3.00, 1.00] Total: 26446 W: 5092 L: 4980 D: 16374 LTC: LLR: 2.96 (-2.94,2.94) [-3.00, 1.00] Total: 14129 W: 2340 L: 2209 D: 9580 Bench: 7815183 Resolves #331 --- src/search.cpp | 1 - 1 file changed, 1 deletion(-) diff --git a/src/search.cpp b/src/search.cpp index cb8179e7..9f42bab7 100644 --- a/src/search.cpp +++ b/src/search.cpp @@ -960,7 +960,6 @@ moves_loop: // When in check and at SpNode search starts from here ss->reduction = reduction(improving, depth, moveCount); if ( (!PvNode && cutNode) - || History[pos.piece_on(to_sq(move))][to_sq(move)] < VALUE_ZERO || ( History[pos.piece_on(to_sq(move))][to_sq(move)] + CounterMovesHistory[pos.piece_on(prevMoveSq)][prevMoveSq] [pos.piece_on(to_sq(move))][to_sq(move)] < VALUE_ZERO)) -- 2.39.2