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Carlos EsparzaandDisservin
e9997afb1c
Only calls to `evaluate()` now trigger NNUE accumulator updates. To make sure that we are likely to find parent positions from which to update the accumulators we perform a backwards NNUE update whenever we compute the accumulator from scratch for some position. passed STC LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 39680 W: 10474 L: 10164 D: 19042 Ptnml(0-2): 171, 4068, 11042, 4398, 161 https://tests.stockfishchess.org/tests/view/67a27f26eb183d11c65945be passed LTC LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 337308 W: 86408 L: 85550 D: 165350 Ptnml(0-2): 276, 30551, 106126, 31441, 260 https://tests.stockfishchess.org/tests/view/67a287efeb183d11c65945ee then simplified: STC LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 28608 W: 7641 L: 7413 D: 13554 Ptnml(0-2): 132, 3036, 7744, 3256, 136 https://tests.stockfishchess.org/tests/view/67a4703719f522d3866d3345 LTC LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 200226 W: 51026 L: 50990 D: 98210 Ptnml(0-2): 170, 18468, 62799, 18508, 168 https://tests.stockfishchess.org/tests/view/67a4f255229c1a170cc08964 The version in this PR is a bit different from the simplified version, but it's compile-time changes only. closes https://github.com/official-stockfish/Stockfish/pull/5870 No functional change