From f8d47a3b73805f9cf0ad1a19cf82befa3db123f6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juhani=20Krekel=C3=A4?= <juhani@krekelä.fi>
Date: Sun, 10 Jan 2021 21:23:01 +0200
Subject: [PATCH] When switching king position, don't redo moves player had
 undone

---
 takhta.html | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/takhta.html b/takhta.html
index 2e494ec..037453f 100644
--- a/takhta.html
+++ b/takhta.html
@@ -713,6 +713,7 @@
 				let blackQueen = blackKing === 'd8' ? 'e8' : 'd8';
 
 				// Undo all moves
+				let historylength = moveHistory.length;
 				while (moveHistory.length > 0) {
 					undoMove();
 				}
@@ -723,8 +724,8 @@
 				document.getElementById(blackKing).firstChild.data = '♚';
 				document.getElementById(blackQueen).firstChild.data = '♛';
 
-				// Redo all the moves we can
-				while (moveFuture.length > 0) {
+				// Redo until we can or until the point where we were before, whichever is first
+				while (moveHistory.length < historylength) {
 					if (!redoMove()) {
 						break;
 					}