X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fevaluate.cpp;h=deb8211ab7d5d86d3f214f0b9e5f11231d786ee6;hb=95ba7f78d5e025499ec8124e37e9f3b769660e4a;hp=98082c4caafe57fd5da4abe76789800d5fe654b1;hpb=3c92f849ab940fd9ac70e838e6d941827fc69cb6;p=stockfish
diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 98082c4c..deb8211a 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -18,7 +18,6 @@
along with this program. If not, see .
*/
-#include
#include
#include // For std::memset
#include
@@ -73,17 +72,6 @@ using namespace Trace;
namespace {
- constexpr Bitboard QueenSide = FileABB | FileBBB | FileCBB | FileDBB;
- constexpr Bitboard CenterFiles = FileCBB | FileDBB | FileEBB | FileFBB;
- constexpr Bitboard KingSide = FileEBB | FileFBB | FileGBB | FileHBB;
- constexpr Bitboard Center = (FileDBB | FileEBB) & (Rank4BB | Rank5BB);
-
- constexpr Bitboard KingFlank[FILE_NB] = {
- QueenSide ^ FileDBB, QueenSide, QueenSide,
- CenterFiles, CenterFiles,
- KingSide, KingSide, KingSide ^ FileEBB
- };
-
// Threshold for lazy and space evaluation
constexpr Value LazyThreshold = Value(1500);
constexpr Value SpaceThreshold = Value(12222);
@@ -152,6 +140,7 @@ namespace {
constexpr Score KnightOnQueen = S( 16, 12);
constexpr Score LongDiagonalBishop = S( 45, 0);
constexpr Score MinorBehindPawn = S( 18, 3);
+ constexpr Score Outpost = S( 9, 3);
constexpr Score PawnlessFlank = S( 17, 95);
constexpr Score RestrictedPiece = S( 7, 7);
constexpr Score RookOnPawn = S( 10, 32);
@@ -163,7 +152,6 @@ namespace {
constexpr Score TrappedRook = S( 47, 4);
constexpr Score WeakQueen = S( 49, 15);
constexpr Score WeakUnopposedPawn = S( 12, 23);
- constexpr Score Outpost = S( 9, 3);
#undef S
@@ -402,7 +390,8 @@ namespace {
constexpr Bitboard Camp = (Us == WHITE ? AllSquares ^ Rank6BB ^ Rank7BB ^ Rank8BB
: AllSquares ^ Rank1BB ^ Rank2BB ^ Rank3BB);
- Bitboard weak, b, b1, b2, safe, unsafeChecks = 0;
+ Bitboard weak, b1, b2, safe, unsafeChecks = 0;
+ Bitboard rookChecks, queenChecks, bishopChecks, knightChecks;
int kingDanger = 0;
const Square ksq = pos.square(Us);
@@ -422,45 +411,43 @@ namespace {
b2 = attacks_bb(ksq, pos.pieces() ^ pos.pieces(Us, QUEEN));
// Enemy rooks checks
- Bitboard RookCheck = b1
- & safe
- & attackedBy[Them][ROOK];
+ rookChecks = b1 & safe & attackedBy[Them][ROOK];
- if (RookCheck)
+ if (rookChecks)
kingDanger += RookSafeCheck;
else
unsafeChecks |= b1 & attackedBy[Them][ROOK];
// Enemy queen safe checks: we count them only if they are from squares from
// which we can't give a rook check, because rook checks are more valuable.
- Bitboard QueenCheck = (b1 | b2)
- & attackedBy[Them][QUEEN]
- & safe
- & ~attackedBy[Us][QUEEN]
- & ~RookCheck;
+ queenChecks = (b1 | b2)
+ & attackedBy[Them][QUEEN]
+ & safe
+ & ~attackedBy[Us][QUEEN]
+ & ~rookChecks;
- if (QueenCheck)
+ if (queenChecks)
kingDanger += QueenSafeCheck;
// Enemy bishops checks: we count them only if they are from squares from
// which we can't give a queen check, because queen checks are more valuable.
- Bitboard BishopCheck = b2
- & attackedBy[Them][BISHOP]
- & safe
- & ~QueenCheck;
+ bishopChecks = b2
+ & attackedBy[Them][BISHOP]
+ & safe
+ & ~queenChecks;
- if (BishopCheck)
+ if (bishopChecks)
kingDanger += BishopSafeCheck;
else
unsafeChecks |= b2 & attackedBy[Them][BISHOP];
// Enemy knights checks
- b = pos.attacks_from(ksq) & attackedBy[Them][KNIGHT];
+ knightChecks = pos.attacks_from(ksq) & attackedBy[Them][KNIGHT];
- if (b & safe)
+ if (knightChecks & safe)
kingDanger += KnightSafeCheck;
else
- unsafeChecks |= b;
+ unsafeChecks |= knightChecks;
// Unsafe or occupied checking squares will also be considered, as long as
// the square is in the attacker's mobility area.
@@ -511,7 +498,7 @@ namespace {
constexpr Direction Up = (Us == WHITE ? NORTH : SOUTH);
constexpr Bitboard TRank3BB = (Us == WHITE ? Rank3BB : Rank6BB);
- Bitboard b, weak, defended, nonPawnEnemies, stronglyProtected, safe, restricted;
+ Bitboard b, weak, defended, nonPawnEnemies, stronglyProtected, safe;
Score score = SCORE_ZERO;
// Non-pawn enemies
@@ -561,10 +548,11 @@ namespace {
}
// Bonus for restricting their piece moves
- restricted = attackedBy[Them][ALL_PIECES]
- & ~stronglyProtected
- & attackedBy[Us][ALL_PIECES];
- score += RestrictedPiece * popcount(restricted);
+ b = attackedBy[Them][ALL_PIECES]
+ & ~stronglyProtected
+ & attackedBy[Us][ALL_PIECES];
+
+ score += RestrictedPiece * popcount(b);
// Bonus for enemy unopposed weak pawns
if (pos.pieces(Us, ROOK, QUEEN))
@@ -754,12 +742,12 @@ namespace {
&& (pos.pieces(PAWN) & KingSide);
// Compute the initiative bonus for the attacking side
- int complexity = 9 * pe->pawn_asymmetry()
+ int complexity = 9 * pe->passed_count()
+ 11 * pos.count()
+ 9 * outflanking
+ 18 * pawnsOnBothFlanks
+ 49 * !pos.non_pawn_material()
- -121 ;
+ -103 ;
// Now apply the bonus: note that we find the attacking side by extracting
// the sign of the endgame value, and that we carefully cap the bonus so
@@ -787,7 +775,7 @@ namespace {
if ( pos.opposite_bishops()
&& pos.non_pawn_material(WHITE) == BishopValueMg
&& pos.non_pawn_material(BLACK) == BishopValueMg)
- sf = 8 + 4 * pe->pawn_asymmetry();
+ sf = 16 + 4 * pe->passed_count();
else
sf = std::min(40 + (pos.opposite_bishops() ? 2 : 7) * pos.count(strongSide), sf);
@@ -901,7 +889,6 @@ std::string Eval::trace(const Position& pos) {
<< " ------------+-------------+-------------+------------\n"
<< " Material | " << Term(MATERIAL)
<< " Imbalance | " << Term(IMBALANCE)
- << " Initiative | " << Term(INITIATIVE)
<< " Pawns | " << Term(PAWN)
<< " Knights | " << Term(KNIGHT)
<< " Bishops | " << Term(BISHOP)
@@ -912,6 +899,7 @@ std::string Eval::trace(const Position& pos) {
<< " Threats | " << Term(THREAT)
<< " Passed | " << Term(PASSED)
<< " Space | " << Term(SPACE)
+ << " Initiative | " << Term(INITIATIVE)
<< " ------------+-------------+-------------+------------\n"
<< " Total | " << Term(TOTAL);