X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fuci.cpp;h=f893bd9cece7becbc36f38c15ef4155386f07a4e;hb=e8a5c64988d4c0d3d6c87e3ba3204ab4cf512bcb;hp=30c1fa0cce0cfc448dc4cf96ae78684c324f4a0e;hpb=4f4e652ecaf8d42a9bd1092f72c3704435ddba12;p=stockfish

diff --git a/src/uci.cpp b/src/uci.cpp
index 30c1fa0c..f893bd9c 100644
--- 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[] = {  -0.58270499,    2.68512549,   15.24638015,  344.49745382};
-     constexpr double bs[] = {  -2.65734562,   15.96509799,  -20.69040836,   73.61029937 };
+     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]));
@@ -302,6 +303,13 @@ void UCI::loop(int argc, char* argv[]) {
 }
 
 
+/// Turns a Value to an integer centipawn number,
+/// without treatment of mate and similar special scores.
+int UCI::to_cp(Value v) {
+
+  return 100 * v / UCI::NormalizeToPawnValue;
+}
+
 /// UCI::value() converts a Value to a string by adhering to the UCI protocol specification:
 ///
 /// cp <x>    The score from the engine's point of view in centipawns.
@@ -314,8 +322,13 @@ string UCI::value(Value v) {
 
   stringstream ss;
 
-  if (abs(v) < VALUE_MATE_IN_MAX_PLY)
-      ss << "cp " << v * 100 / NormalizeToPawnValue;
+  if (abs(v) < VALUE_TB_WIN_IN_MAX_PLY)
+      ss << "cp " << UCI::to_cp(v);
+  else if (abs(v) < VALUE_MATE_IN_MAX_PLY)
+  {
+      const int ply = VALUE_MATE_IN_MAX_PLY - 1 - std::abs(v);  // recompute ss->ply
+      ss << "cp " << (v > 0 ? 20000 - ply : -20000 + ply);
+  }
   else
       ss << "mate " << (v > 0 ? VALUE_MATE - v + 1 : -VALUE_MATE - v) / 2;
 
@@ -353,15 +366,15 @@ std::string UCI::square(Square s) {
 
 string UCI::move(Move m, bool chess960) {
 
-  Square from = from_sq(m);
-  Square to = to_sq(m);
-
   if (m == MOVE_NONE)
       return "(none)";
 
   if (m == MOVE_NULL)
       return "0000";
 
+  Square from = from_sq(m);
+  Square to = to_sq(m);
+
   if (type_of(m) == CASTLING && !chess960)
       to = make_square(to > from ? FILE_G : FILE_C, rank_of(from));