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Better check evasion move sorting

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Use in addition the counter move history table for sorting quiet
check evasion moves in main and quiecence search. Also rename
"contHistory" to "continuationHistory" while there.

STC:
LLR: 2.96 (-2.94,2.94) [0.00,5.00]
Total: 73284 W: 16433 L: 15938 D: 40913
http://tests.stockfishchess.org/tests/view/5b4f526e0ebc5902bdb7a401

LTC:
LLR: 2.96 (-2.94,2.94) [0.00,5.00]
Total: 12135 W: 2171 L: 1997 D: 7967
http://tests.stockfishchess.org/tests/view/5b4fc0ef0ebc5902bdb7ae0e

Closes https://github.com/official-stockfish/Stockfish/pull/1685

Bench 4817583
This commit is contained in:
Stefan Geschwentner
2018-07-19 18:26:05 +02:00
committed by Stéphane Nicolet
parent 3913726d1c
commit 12e79be910
6 changed files with 30 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/movepick.cpp
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@@ -61,7 +61,7 @@ namespace {
/// MovePicker constructor for the main search
MovePicker::MovePicker(const Position& p, Move ttm, Depth d, const ButterflyHistory* mh,
const CapturePieceToHistory* cph, const PieceToHistory** ch, Move cm, Move* killers)
: pos(p), mainHistory(mh), captureHistory(cph), contHistory(ch),
: pos(p), mainHistory(mh), captureHistory(cph), continuationHistory(ch),
refutations{{killers[0], 0}, {killers[1], 0}, {cm, 0}}, depth(d) {
assert(d > DEPTH_ZERO);
@@ -73,8 +73,8 @@ MovePicker::MovePicker(const Position& p, Move ttm, Depth d, const ButterflyHist
/// MovePicker constructor for quiescence search
MovePicker::MovePicker(const Position& p, Move ttm, Depth d, const ButterflyHistory* mh,
const CapturePieceToHistory* cph, Square rs)
: pos(p), mainHistory(mh), captureHistory(cph), recaptureSquare(rs), depth(d) {
const CapturePieceToHistory* cph, const PieceToHistory** ch, Square rs)
: pos(p), mainHistory(mh), captureHistory(cph), continuationHistory(ch), recaptureSquare(rs), depth(d) {
assert(d <= DEPTH_ZERO);
@@ -115,9 +115,9 @@ void MovePicker::score() {
else if (Type == QUIETS)
m.value = (*mainHistory)[pos.side_to_move()][from_to(m)]
+ (*contHistory[0])[pos.moved_piece(m)][to_sq(m)]
+ (*contHistory[1])[pos.moved_piece(m)][to_sq(m)]
+ (*contHistory[3])[pos.moved_piece(m)][to_sq(m)];
+ (*continuationHistory[0])[pos.moved_piece(m)][to_sq(m)]
+ (*continuationHistory[1])[pos.moved_piece(m)][to_sq(m)]
+ (*continuationHistory[3])[pos.moved_piece(m)][to_sq(m)];
else // Type == EVASIONS
{
@@ -125,7 +125,9 @@ void MovePicker::score() {
m.value = PieceValue[MG][pos.piece_on(to_sq(m))]
- Value(type_of(pos.moved_piece(m)));
else
m.value = (*mainHistory)[pos.side_to_move()][from_to(m)] - (1 << 28);
m.value = (*mainHistory)[pos.side_to_move()][from_to(m)]
+ (*continuationHistory[0])[pos.moved_piece(m)][to_sq(m)]
- (1 << 28);
}
}