Fix syzygy with partial TB

[stockfish] / src / position.cpp

diff --git a/src/position.cpp b/src/position.cpp
index bc8e92a1d77a29980bb9c274e5cbf434dbdfa7c5..aa06db08c106ae9f5c1689e2e3b110671f21a25c 100644 (file)
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -40,11 +40,8 @@ namespace Zobrist {
   Key enpassant[FILE_NB];
   Key castling[CASTLING_RIGHT_NB];
   Key side;
-  Key exclusion;
 }
 
-Key Position::exclusion_key() const { return st->key ^ Zobrist::exclusion; }
-
 namespace {
 
 const string PieceToChar(" PNBRQK  pnbrqk");
@@ -132,7 +129,6 @@ void Position::init() {
   }
 
   Zobrist::side = rng.rand<Key>();
-  Zobrist::exclusion  = rng.rand<Key>();
 }