diff --git a/src/evaluate.cpp b/src/evaluate.cpp index 09f36513..db8379da 100644 --- a/src/evaluate.cpp +++ b/src/evaluate.cpp @@ -1015,12 +1015,16 @@ make_v: Value Eval::evaluate(const Position& pos) { + bool useClassical = abs(eg_value(pos.psq_score())) * 16 > NNUEThreshold1 * (16 + pos.rule50_count()); bool classical = !Eval::useNNUE - || abs(eg_value(pos.psq_score())) * 16 > NNUEThreshold1 * (16 + pos.rule50_count()); + || useClassical + || (abs(eg_value(pos.psq_score())) > PawnValueMg / 8 && !(pos.this_thread()->nodes & 0xF)); Value v = classical ? Evaluation(pos).value() : NNUE::evaluate(pos) * 5 / 4 + Tempo; - if (classical && Eval::useNNUE && abs(v) * 16 < NNUEThreshold2 * (16 + pos.rule50_count())) + if ( useClassical + && Eval::useNNUE + && abs(v) * 16 < NNUEThreshold2 * (16 + pos.rule50_count())) v = NNUE::evaluate(pos) * 5 / 4 + Tempo; // Damp down the evaluation linearly when shuffling