From 0868de705df796b9b9803bd393f4f27c3f4ed772 Mon Sep 17 00:00:00 2001 From: IIvec Date: Sun, 23 Apr 2017 08:02:52 -0700 Subject: [PATCH] King safety parameters improved STC: LLR: 2.97 (-2.94,2.94) [0.00,4.00] Total: 58648 W: 10883 L: 10524 D: 37241 LTC: LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 52546 W: 7131 L: 6844 D: 38571 Bench 6121479 Closes #1078 --- src/evaluate.cpp | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/src/evaluate.cpp b/src/evaluate.cpp index 23ab62ec..f13ddf25 100644 --- a/src/evaluate.cpp +++ b/src/evaluate.cpp @@ -211,10 +211,10 @@ namespace { const int KingAttackWeights[PIECE_TYPE_NB] = { 0, 0, 78, 56, 45, 11 }; // Penalties for enemy's safe checks - const int QueenCheck = 745; - const int RookCheck = 688; - const int BishopCheck = 588; - const int KnightCheck = 924; + const int QueenCheck = 810; + const int RookCheck = 888; + const int BishopCheck = 400; + const int KnightCheck = 790; // Threshold for lazy evaluation const Value LazyThreshold = Value(1500); @@ -423,12 +423,12 @@ namespace { // number and types of the enemy's attacking pieces, the number of // attacked and undefended squares around our king and the quality of // the pawn shelter (current 'score' value). - kingDanger = std::min(807, ei.kingAttackersCount[Them] * ei.kingAttackersWeight[Them]) - + 101 * ei.kingAdjacentZoneAttacksCount[Them] - + 235 * popcount(undefended) - + 134 * (popcount(b) + !!pos.pinned_pieces(Us)) - - 717 * !pos.count(Them) - - 7 * mg_value(score) / 5 - 5; + kingDanger = std::min(820, ei.kingAttackersCount[Them] * ei.kingAttackersWeight[Them]) + + 103 * ei.kingAdjacentZoneAttacksCount[Them] + + 190 * popcount(undefended) + + 142 * (popcount(b) + !!pos.pinned_pieces(Us)) + - 810 * !pos.count(Them) + - 6 * mg_value(score) / 5 - 5; // Analyse the safe enemy's checks which are possible on next move safe = ~pos.pieces(Them); -- 2.39.2