diff --git a/src/evaluate.cpp b/src/evaluate.cpp index 8fd405d0..0554f490 100644 --- a/src/evaluate.cpp +++ b/src/evaluate.cpp @@ -220,9 +220,8 @@ namespace { // Penalties for enemy's safe checks const int QueenContactCheck = 89; - const int RookContactCheck = 71; const int QueenCheck = 50; - const int RookCheck = 37; + const int RookCheck = 45; const int BishopCheck = 6; const int KnightCheck = 14; @@ -421,23 +420,6 @@ namespace { attackUnits += QueenContactCheck * popcount(b); } - // Analyse the enemy's safe rook contact checks. Firstly, find the - // undefended squares around the king reachable by the enemy rooks... - b = undefended & ei.attackedBy[Them][ROOK] & ~pos.pieces(Them); - - // Consider only squares where the enemy's rook gives check - b &= PseudoAttacks[ROOK][ksq]; - - if (b) - { - // ...and then remove squares not supported by another enemy piece - b &= ( ei.attackedBy[Them][PAWN] | ei.attackedBy[Them][KNIGHT] - | ei.attackedBy[Them][BISHOP]); - - if (b) - attackUnits += RookContactCheck * popcount(b); - } - // Analyse the enemy's safe distance checks for sliders and knights safe = ~(ei.attackedBy[Us][ALL_PIECES] | pos.pieces(Them));