From 5011cfed8c2b379f8790543e6041f7325864e78d Mon Sep 17 00:00:00 2001
From: Jesse McDonald <nybble41@gmail.com>
Date: Sun, 15 Mar 2020 14:27:34 -0500
Subject: [PATCH] fix a null reference when checking for legal en passant moves

---
 js/chess.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/js/chess.js b/js/chess.js
index 7381e77..9f9972d 100644
--- a/js/chess.js
+++ b/js/chess.js
@@ -228,7 +228,7 @@ function legalMoves(board, side, type, from, canCapture){
             if (there) {
                if (boardGet(board, there, otherSide(side)) !== ' ') {
                   legals.push(there);
-               } else {
+               } else if (forward2) {
                   let otherBoard = board;
                   while (otherBoard && otherBoard.move && otherBoard.move.side[0] === side[0]) {
                      otherBoard = otherBoard.prior;