Update winrate model with June data

[stockfish] / src / uci.cpp

diff --git a/src/uci.cpp b/src/uci.cpp
index d3d99243b0937deb39cb8fae5fee5e3e75e9e160..ed16f24c382ec5d11555f9ab0fab4fa29b42dc47 100644 (file)
--- a/src/uci.cpp
+++ b/src/uci.cpp
@@ -32,6 +32,7 @@
 #include "tt.h"
 #include "uci.h"
 #include "syzygy/tbprobe.h"
+#include "nnue/evaluate_nnue.h"
 
 using namespace std;
 
@@ -206,8 +207,8 @@ namespace {
      // The coefficients of a third-order polynomial fit is based on the fishtest data
      // for two parameters that need to transform eval to the argument of a logistic
      // function.
-     constexpr double as[] = {   0.33677609,   -4.30175627,   33.08810557,  365.60223431};
-     constexpr double bs[] = {  -2.50471102,   14.23235405,  -14.33066859,   71.42705250 };
+     constexpr double as[] = {   0.38036525,   -2.82015070,   23.17882135,  307.36768407};
+     constexpr double bs[] = {  -2.29434733,   13.27689788,  -14.26828904,   63.45318330 };
 
      // Enforce that NormalizeToPawnValue corresponds to a 50% win rate at ply 64
      static_assert(UCI::NormalizeToPawnValue == int(as[0] + as[1] + as[2] + as[3]));