From 3c4b30a345ec31218bc2b23efe53ca1632204605 Mon Sep 17 00:00:00 2001 From: Fabian Fichter Date: Tue, 18 Dec 2018 21:09:16 +0100 Subject: [PATCH] Tweak isolated pawn penalty for losing chess variants giveaway STC LLR: 2.98 (-2.94,2.94) [0.00,10.00] Total: 1699 W: 626 L: 526 D: 547 http://35.161.250.236:6543/tests/view/5c1954786e23db24728955bb losers STC LLR: 2.97 (-2.94,2.94) [0.00,10.00] Total: 4610 W: 2045 L: 1890 D: 675 http://35.161.250.236:6543/tests/view/5c1954b76e23db24728955be --- src/pawns.cpp | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/pawns.cpp b/src/pawns.cpp index bea3e55..04b727b 100644 --- a/src/pawns.cpp +++ b/src/pawns.cpp @@ -139,7 +139,7 @@ namespace { score += Connected[opposed][bool(phalanx)][popcount(supported)][relative_rank(Us, s, pos.max_rank())]; else if (!neighbours) - score -= Isolated, e->weakUnopposed[Us] += !opposed; + score -= Isolated * (1 + 2 * pos.must_capture()), e->weakUnopposed[Us] += !opposed; else if (backward) score -= Backward, e->weakUnopposed[Us] += !opposed; -- 1.7.0.4