/*
- Glaurung, a UCI chess playing engine.
- Copyright (C) 2004-2008 Tord Romstad
+ Stockfish, a UCI chess playing engine derived from Glaurung 2.1
+ Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
+ Copyright (C) 2008 Marco Costalba
- Glaurung is free software: you can redistribute it and/or modify
+ Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
-
- Glaurung is distributed in the hope that it will be useful,
+
+ Stockfish is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/// EvalInfo object which is used by the search is futilityMargin.
struct EvalInfo {
-
+
// Middle game and endgame evaluations:
Value mgValue, egValue;
// f7, g7, h7, f6, g6 and h6.
Bitboard kingZone[2];
- // kingAttackersCount[color] is the number of pieces of the given color which
- // attack a square adjacent to the enemy king.
+ // kingAttackersCount[color] is the number of pieces of the given color
+ // which attack a square in the kingZone of the enemy king.
int kingAttackersCount[2];
// kingAttackersWeight[color] is the sum of the "weight" of the pieces of the
- // given color which attack a square adjacent to the enemy king. The weights
- // of the individual piece types are given by the variables QueenAttackWeight,
- // RookAttackWeight, BishopAttackWeight and KnightAttackWeight in evaluate.cpp
+ // given color which attack a square in the kingZone of the enemy king. The
+ // weights of the individual piece types are given by the variables
+ // QueenAttackWeight, RookAttackWeight, BishopAttackWeight and
+ // KnightAttackWeight in evaluate.cpp
int kingAttackersWeight[2];
- // kingZoneAttacksCount[color] is the number of attacks to squares directly
- // adjacent to the king of the given color. Pieces which attack more
- // than one square are counted multiple times. For instance, if black's
+ // kingAdjacentZoneAttacksCount[color] is the number of attacks to squares
+ // directly adjacent to the king of the given color. Pieces which attack
+ // more than one square are counted multiple times. For instance, if black's
// king is on g8 and there's a white knight on g5, this knight adds
- // 2 to kingZoneAttacksCount[BLACK].
- int kingZoneAttacksCount[2];
+ // 2 to kingAdjacentZoneAttacksCount[BLACK].
+ int kingAdjacentZoneAttacksCount[2];
// mateThreat[color] is a move for the given side which gives a direct mate.
Move mateThreat[2];
Value mgMobility, egMobility;
// Extra futility margin. This is added to the standard futility margin
- // in the quiescence search.
+ // in the quiescence search.
Value futilityMargin;
};