Simplification STC:
https://tests.stockfishchess.org/tests/view/
64351654596a20f264276ded
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 374664 W: 98942 L: 99089 D: 176633
Ptnml(0-2): 1049, 41767, 101878, 41558, 1080
Simplification LTC:
https://tests.stockfishchess.org/tests/view/
6439499f605991a801b4f684
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 457880 W: 123021 L: 123233 D: 211626
Ptnml(0-2): 166, 44739, 139335, 44541, 159
closes https://github.com/official-stockfish/Stockfish/pull/4534
Bench:
3879281
- bestValue = delta = alpha = -VALUE_INFINITE;
- beta = VALUE_INFINITE;
- optimism[WHITE] = optimism[BLACK] = VALUE_ZERO;
+ bestValue = -VALUE_INFINITE;
selDepth = 0;
// Reset aspiration window starting size
selDepth = 0;
// Reset aspiration window starting size
- if (rootDepth >= 4)
- {
- Value prev = rootMoves[pvIdx].averageScore;
- delta = Value(10) + int(prev) * prev / 16502;
- alpha = std::max(prev - delta,-VALUE_INFINITE);
- beta = std::min(prev + delta, VALUE_INFINITE);
-
- // Adjust optimism based on root move's previousScore
- int opt = 120 * prev / (std::abs(prev) + 161);
- optimism[ us] = Value(opt);
- optimism[~us] = -optimism[us];
- }
+ Value prev = rootMoves[pvIdx].averageScore;
+ delta = Value(10) + int(prev) * prev / 16502;
+ alpha = std::max(prev - delta,-VALUE_INFINITE);
+ beta = std::min(prev + delta, VALUE_INFINITE);
+
+ // Adjust optimism based on root move's previousScore
+ int opt = 120 * prev / (std::abs(prev) + 161);
+ optimism[ us] = Value(opt);
+ optimism[~us] = -optimism[us];
// Start with a small aspiration window and, in the case of a fail
// high/low, re-search with a bigger window until we don't fail
// Start with a small aspiration window and, in the case of a fail
// high/low, re-search with a bigger window until we don't fail