From 8c10029df135f841126d17a65002e217c7ca1887 Mon Sep 17 00:00:00 2001 From: Marco Costalba Date: Fri, 5 Apr 2013 08:56:22 +0200 Subject: [PATCH] Revert "Double Impact of Gain tables" This reverts commit 36c82b751ce227c05bfb Seems a regression against 2.3.1 tested with 20K games at 60"+0.05 With patch applied ELO: 15.44 +-2.8 (95%) LOS: 100.0% Total: 20000 W: 3928 L: 3040 D: 13032 Without patch applied ELO: 18.76 +-2.8 (95%) LOS: 100.0% Total: 20000 W: 3903 L: 2824 D: 13273 bench: 4781239 --- src/search.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/search.cpp b/src/search.cpp index e246512e..60667c87 100644 --- a/src/search.cpp +++ b/src/search.cpp @@ -876,7 +876,7 @@ split_point_start: // At split points actual search starts from here // but fixing this made program slightly weaker. Depth predictedDepth = newDepth - reduction(depth, moveCount); futilityValue = ss->staticEval + ss->evalMargin + futility_margin(predictedDepth, moveCount) - + 2 * Gain[pos.piece_moved(move)][to_sq(move)]; + + Gain[pos.piece_moved(move)][to_sq(move)]; if (futilityValue < beta) { -- 2.39.2