fix: black not having close castling rights removed after B pawn moves

dechristopher · Mar 5, 2021 · 2ea2c09 · 2ea2c09
1 parent 71d352b
commit 2ea2c09
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/move_test.go b/move_test.go
@@ -21,10 +21,10 @@ type perfTest struct {
 // https://www.chessprogramming.org/Perft_Results
 var perfResults = []perfTest{
  {pos: unsafeOFEN("ppkn/4/4/NKPP w NCFncf - 0 1"), nodesPerDepth: []int{
- 10, 84, 642, 4348, 29171, 183118,
+ 10, 84, 642, 4373, 29389, 185151,
  }},
  {pos: unsafeOFEN("ppkn/4/2P1/NK1P w NCFncf - 0 1"), nodesPerDepth: []int{
- 10, 75, 538, 3407,
+ 10, 75, 538, 3432,
  }},
 }
 

diff --git a/position.go b/position.go
@@ -367,7 +367,7 @@ func (pos *Position) updateCastleRights(m *Move) CastleRights {
  if didPieceMove(pos, m, BlackKing, D4) {
  removeCastlingRight(&cr, "n")
  }
- if didPieceMove(pos, m, BlackKing, D4) {
+ if didPieceMove(pos, m, BlackKing, B4) {
  removeCastlingRight(&cr, "c")
  }
  if didPieceMove(pos, m, BlackKing, A4) {