- Remove quiet tt move extensions : official-stockfish/Stockfish@c115e51

yaneurao · Feb 15, 2024 · e362c64 · e362c64
1 parent a3db1b8
commit e362c64
Showing 1 changed file with 0 additions and 11 deletions.
diff --git a/source/engine/yaneuraou-engine/yaneuraou-search.cpp b/source/engine/yaneuraou-engine/yaneuraou-search.cpp
@@ -2716,17 +2716,6 @@ Value search(Position& pos, Stack* ss, Value alpha, Value beta, Depth depth, boo
  )
  extension = 1;
 
- // Quiet ttMove extensions (~1 Elo)
- // 駒を取らない置換表の指し手に関する延長
-
- // PV nodeでquietなttは良い指し手のはずだから延長するというもの。
-
- else if (PvNode
- && move == ttMove
- && move == ss->killers[0]
- && (*contHist[0])(movedPiece, to_sq(move)) >= 4194)
- extension = 1;
-
  // Recapture extensions (~1 Elo)
  else if (PvNode && move == ttMove && to_sq(move) == prevSq
  && captureHistory(movedPiece, to_sq(move), type_of(pos.piece_on(to_sq(move))))