From 2260f97308471bf8e58857a39c02dcc3ff4920ab Mon Sep 17 00:00:00 2001
From: Fabian Fichter <ianfab@users.noreply.github.com>
Date: Sat, 15 Aug 2020 19:11:34 +0200
Subject: [PATCH] Fix undo_move for arrow gating

---
 src/position.cpp |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

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);
   }
-- 
1.7.0.4