X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=51d9b4290e6d48b3b324de5e6c459d5fd9d824a2;hp=6acaaad0e0eaf1cc30e2222032772f4ecf553e36;hb=c9dcda6ac488c0058ebd567e1f52e30b8cd0db20;hpb=71440cf77b1df19e72bf281903c6babe2574b3ca

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 6acaaad0..51d9b429 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -1,7 +1,7 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
-  Copyright (C) 2008-2013 Marco Costalba, Joona Kiiski, Tord Romstad
+  Copyright (C) 2008-2014 Marco Costalba, Joona Kiiski, Tord Romstad
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -163,7 +163,6 @@ namespace {
   #undef S
 
   const Score Tempo            = make_score(24, 11);
-  const Score BishopPin        = make_score(66, 11);
   const Score RookOn7th        = make_score(11, 20);
   const Score QueenOn7th       = make_score( 3,  8);
   const Score RookOnPawn       = make_score(10, 28);
@@ -501,13 +500,6 @@ Value do_evaluate(const Position& pos) {
         if (ei.attackedBy[Them][PAWN] & s)
             score -= ThreatenedByPawn[Piece];
 
-        // Otherwise give a bonus if we are a bishop and can pin a piece or can
-        // give a discovered check through an x-ray attack.
-        else if (    Piece == BISHOP
-                 && (PseudoAttacks[Piece][pos.king_square(Them)] & s)
-                 && !more_than_one(BetweenBB[s][pos.king_square(Them)] & pos.pieces()))
-                 score += BishopPin;
-
         // Penalty for bishop with same coloured pawns
         if (Piece == BISHOP)
             score -= BishopPawns * ei.pi->pawns_on_same_color_squares(Us, s);