From: Fabian Fichter <ianfab@users.noreply.github.com>
Date: Sat, 15 Aug 2020 17:11:34 +0000 (+0200)
Subject: Fix undo_move for arrow gating
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=2260f97308471bf8e58857a39c02dcc3ff4920ab;p=fairystockfish.git

Fix undo_move for arrow gating
---

diff --git a/src/position.cpp b/src/position.cpp
index f153ad7..aebb073 100644
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -1545,6 +1545,7 @@ void Position::undo_move(Move m) {
   {
       Piece gating_piece = make_piece(us, gating_type(m));
       remove_piece(gating_square(m));
+      board[gating_square(m)] = NO_PIECE;
       add_to_hand(gating_piece);
       st->gatesBB[us] |= gating_square(m);
   }