Latest abrok Development Version Febuary 7th (SF The gift that keeps on giving

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Windows x64 for Haswell CPUs
Windows x64 for modern computers + AVX2
Windows x64 for modern computers
Windows x64 + SSSE3
Windows x64
Linux x64 for Haswell CPUs
Linux x64 for modern computers + AVX2
Linux x64 for modern computers
Linux x64 + SSSE3
Linux x64
Author: Michael Chaly
Date: Mon Feb 7 17:30:35 2022 +0100
Timestamp: 1644251435

Do less depth reduction in null move pruning for complex positions

This patch makes us reduce less depth in null move pruning if complexity is high enough.
Thus, null move pruning now depends in two distinct ways on complexity,
while being the only search heuristic that exploits complexity so far.

passed STC
https://tests.stockfishchess.org/tests/view/61fde60fd508ec6a1c9f7754
LLR: 2.94 (-2.94,2.94) <0.00,2.50>
Total: 170000 W: 45555 L: 45027 D: 79418 Elo +1.08
Ptnml(0-2): 760, 19352, 44359, 19658, 871

passed LTC
https://tests.stockfishchess.org/tests/view/61fe91febf46cb834cbd5c90
LLR: 2.96 (-2.94,2.94) <0.50,3.00>
Total: 145272 W: 39182 L: 38651 D: 67439 Elo +1.27
Ptnml(0-2): 127, 14864, 42157, 15327, 161

closes https://github.com/official-stockfish/Stockfish/pull/3923

bench 4461945
see source