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Retire rook contact checks

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STC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 34114 W: 6363 L: 6265 D: 21486

LTC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 61776 W: 9349 L: 9289 D: 43138

LTC (after rebasing):
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 15261 W: 2343 L: 2214 D: 10704

Bench: 7523382

Resolves #442
This commit is contained in:
Jonathan Calovski 2015-10-07 19:48:54 +11:00 • committed by Joona Kiiski
parent 08d6465d90
commit 55b46ffa90
1 changed files with 1 additions and 19 deletions
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20
src/evaluate.cpp
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@ -220,9 +220,8 @@ namespace {
// Penalties for enemy's safe checks // Penalties for enemy's safe checks
const int QueenContactCheck = 89; const int QueenContactCheck = 89;
const int RookContactCheck = 71;
const int QueenCheck = 50; const int QueenCheck = 50;
const int RookCheck = 37; const int RookCheck = 45;
const int BishopCheck = 6; const int BishopCheck = 6;
const int KnightCheck = 14; const int KnightCheck = 14;
@ -421,23 +420,6 @@ namespace {
attackUnits += QueenContactCheck * popcount<Max15>(b); attackUnits += QueenContactCheck * popcount<Max15>(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<Max15>(b);
}
// Analyse the enemy's safe distance checks for sliders and knights // Analyse the enemy's safe distance checks for sliders and knights
safe = ~(ei.attackedBy[Us][ALL_PIECES] | pos.pieces(Them)); safe = ~(ei.attackedBy[Us][ALL_PIECES] | pos.pieces(Them));