X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=3a620a78305fb83da36f9b9b5278be919cf685aa;hp=00fd2005ed7445008263db7f71c547c72a3ef997;hb=65b976439f8867e81682c0b66da6796ad3176177;hpb=e5f450cf0bfe5a34dd4ea51a5592a71be4514601

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 00fd2005..3a620a78 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -939,13 +939,16 @@ make_v:
 Value Eval::evaluate(const Position& pos) {
 
   bool classical = !Eval::useNNUE
-                ||  abs(eg_value(pos.psq_score())) >= NNUEThreshold;
+                ||  abs(eg_value(pos.psq_score())) >= NNUEThreshold * (16 + pos.rule50_count()) / 16;
   Value v = classical ? Evaluation<NO_TRACE>(pos).value()
-                      : NNUE::evaluate(pos) + Tempo;
+                      : NNUE::evaluate(pos) * 5 / 4 + Tempo;
 
   // Damp down the evaluation linearly when shuffling
   v = v * (100 - pos.rule50_count()) / 100;
 
+  // Guarantee evalution outside of TB range
+  v = Utility::clamp(v, VALUE_TB_LOSS_IN_MAX_PLY + 1, VALUE_TB_WIN_IN_MAX_PLY - 1);
+
   return v;
 }