From: SFisGOD <jonathandumale@gmail.com>
Date: Sat, 28 Nov 2020 15:14:34 +0000 (+0800)
Subject: Update default net to nn-62ef826d1a6d.nnue
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=736400675746c6b84a0bdf131babce1b07ade0df;hp=2442ba2b0e8a399b0dbfe9d23a8a2819cb0af987

Update default net to nn-62ef826d1a6d.nnue

Include scaling change as suggested by Dietrich Kappe,
the one who trained net for Komodo.  According to him,
some nets may require different scaling in order to utilize its full strength.

STC:
LLR: 2.93 (-2.94,2.94) {-0.25,1.25}
Total: 99856 W: 9669 L: 9401 D: 80786
Ptnml(0-2): 374, 7468, 34037, 7614, 435
https://tests.stockfishchess.org/tests/view/5fc2697642a050a89f02c8ec

LTC:
LLR: 2.96 (-2.94,2.94) {0.25,1.25}
Total: 29840 W: 1220 L: 1081 D: 27539
Ptnml(0-2): 10, 969, 12827, 1100, 14
https://tests.stockfishchess.org/tests/view/5fc2ea5142a050a89f02c957

Bench: 3561701
---

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 6ee53621..a1b04316 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -1037,7 +1037,7 @@ Value Eval::evaluate(const Position& pos) {
       // Scale and shift NNUE for compatibility with search and classical evaluation
       auto  adjusted_NNUE = [&](){
          int mat = pos.non_pawn_material() + PawnValueMg * pos.count<PAWN>();
-         return NNUE::evaluate(pos) * (720 + mat / 32) / 1024 + Tempo;
+         return NNUE::evaluate(pos) * (679 + mat / 32) / 1024 + Tempo;
       };
 
       // If there is PSQ imbalance use classical eval, with small probability if it is small
diff --git a/src/evaluate.h b/src/evaluate.h
index 06c66f71..7dbc35de 100644
--- a/src/evaluate.h
+++ b/src/evaluate.h
@@ -36,7 +36,7 @@ namespace Eval {
   // The default net name MUST follow the format nn-[SHA256 first 12 digits].nnue
   // for the build process (profile-build and fishtest) to work. Do not change the
   // name of the macro, as it is used in the Makefile.
-  #define EvalFileDefaultName   "nn-c3ca321c51c9.nnue"
+  #define EvalFileDefaultName   "nn-62ef826d1a6d.nnue"
 
   namespace NNUE {