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Stéphane Nicolet 392b529c3f Qsearch pruning: follow-up 
This is a follow-up of the recent qsearch pruning patch in
https://github.com/official-stockfish/Stockfish/commit/a260c9a8a24a2630a900efc3821000c3481b0c5d

We now use the same guard condition (testing that we already have a defense with
a score better  score than a TB loss) for all pruning heuristics in qsearch().
This allows some pruning when in check, but  in a controlled way to ensure that
no wrong mate scores appear.

Tested with Elo-gaining bounds:

STC:
LLR: 2.97 (-2.94,2.94) {-0.25,1.25}
Total: 22632 W: 2433 L: 2264 D: 17935
Ptnml(0-2): 98, 1744, 7487, 1865, 122
https://tests.stockfishchess.org/tests/view/5fa59405936c54e11ec99515

LTC:
LLR: 2.94 (-2.94,2.94) {0.25,1.25}
Total: 105432 W: 4965 L: 4648 D: 95819
Ptnml(0-2): 85, 4110, 44011, 4423, 87
https://tests.stockfishchess.org/tests/view/5fa5b609936c54e11ec9952a

closes https://github.com/official-stockfish/Stockfish/pull/3221

Bench: 3578092
2020-11-08 09:15:34 +01:00
..
incbin
Embed default net, and simplify using non-default nets
2020-08-29 21:56:00 +02:00
nnue
AVX-512 for smaller affine and feature transforms.
2020-11-07 16:49:49 +01:00
syzygy
Only use MADV_RANDOM if defined
2020-09-02 07:32:10 +02:00
benchmark.cpp
Always re-enable NNUE after "bench".
2020-09-08 22:53:50 +02:00
bitbase.cpp
Add NNUE evaluation
2020-08-06 16:37:45 +02:00
bitboard.cpp
Small trivial cleanups
2020-08-23 01:53:41 +02:00
bitboard.h
Small trivial cleanups
2020-08-23 01:53:41 +02:00
endgame.cpp
Add NNUE evaluation
2020-08-06 16:37:45 +02:00
endgame.h
Add NNUE evaluation
2020-08-06 16:37:45 +02:00
evaluate.cpp
Elo Worth in King Danger
2020-11-02 19:41:17 +01:00
evaluate.h
Update default net to nn-c3ca321c51c9.nnue
2020-11-08 08:36:16 +01:00
main.cpp
Small cleanups 12
2020-09-21 10:41:10 +02:00
Makefile
Add net as dependency of config
2020-10-22 20:18:12 +02:00
material.cpp
Small trivial cleanups
2020-08-23 01:53:41 +02:00
material.h
Add NNUE evaluation
2020-08-06 16:37:45 +02:00
misc.cpp
Suppress info strings before 'uci'
2020-09-25 17:44:14 +02:00
misc.h
Manually align arrays on the stack
2020-11-04 19:52:42 +01:00
movegen.cpp
Small trivial cleanups
2020-08-23 01:53:41 +02:00
movegen.h
Add NNUE evaluation
2020-08-06 16:37:45 +02:00
movepick.cpp
Do not skip non-recapture ttMove when in check
2020-10-28 23:40:37 +01:00
movepick.h
Introduce movecount pruning for qsearch()
2020-08-23 23:27:03 +02:00
pawns.cpp
Introducing King On File
2020-11-07 16:49:49 +01:00
pawns.h
Add NNUE evaluation
2020-08-06 16:37:45 +02:00
position.cpp
Manually align arrays on the stack
2020-11-04 19:52:42 +01:00
position.h
Remove EvalList
2020-08-26 07:11:26 +02:00
psqt.cpp
Add NNUE evaluation
2020-08-06 16:37:45 +02:00
search.cpp
Qsearch pruning: follow-up
2020-11-08 09:15:34 +01:00
search.h
Small cleanups 12
2020-09-21 10:41:10 +02:00
thread_win32_osx.h
Explicitly rely on pthreads if possible
2020-08-22 11:00:45 +02:00
thread.cpp
Small cleanups 12
2020-09-21 10:41:10 +02:00
thread.h
Do more reductions for late quiet moves in case of consecutive fail highs.
2020-10-18 13:54:28 +02:00
timeman.cpp
Reduce big time spikes by reducing PV re-searches.
2020-10-22 20:08:15 +02:00
timeman.h
Add NNUE evaluation
2020-08-06 16:37:45 +02:00
tt.cpp
Add large page support for NNUE weights and simplify TT mem management
2020-09-21 08:43:48 +02:00
tt.h
Add large page support for NNUE weights and simplify TT mem management
2020-09-21 08:43:48 +02:00
tune.cpp
Add NNUE evaluation
2020-08-06 16:37:45 +02:00
tune.h
Add NNUE evaluation
2020-08-06 16:37:45 +02:00
types.h
Manually align arrays on the stack
2020-11-04 19:52:42 +01:00
uci.cpp
Small cleanups 12
2020-09-21 10:41:10 +02:00
uci.h
Add NNUE evaluation
2020-08-06 16:37:45 +02:00
ucioption.cpp
Small cleanups 12
2020-09-21 10:41:10 +02:00