Simplify capture bonus by simply adding ONE_DEPTH instead of being
dependent on BestValue.
STC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 24419 W: 4939 L: 4824 D: 14656
http://tests.stockfishchess.org/tests/view/
5b16b2040ebc5963ba37e2a5
LTC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 44560 W: 6524 L: 6438 D: 31598
http://tests.stockfishchess.org/tests/view/
5b16ccc00ebc59214346d403
Closes https://github.com/official-stockfish/Stockfish/pull/1640
Bench:
4782637
if (!pos.capture_or_promotion(bestMove))
update_quiet_stats(pos, ss, bestMove, quietsSearched, quietCount, stat_bonus(depth));
else
- update_capture_stats(pos, bestMove, capturesSearched, captureCount,
- stat_bonus(depth + (bestValue > beta + KnightValueMg ? ONE_PLY : DEPTH_ZERO)));
+ update_capture_stats(pos, bestMove, capturesSearched, captureCount, stat_bonus(depth + ONE_PLY));
// Extra penalty for a quiet TT move in previous ply when it gets refuted
if ((ss-1)->moveCount == 1 && !pos.captured_piece())