From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Sun, 17 Jul 2016 21:53:17 +0000 (+0200)
Subject: Fix check testing in games without King
X-Git-Url: http://winboard.nl/cgi-bin?p=xboard.git;a=commitdiff_plain;h=674a21be8b9a930d910d4345db5b999e76c58b70

Fix check testing in games without King

A position without King was always considered as in check (because of
Atomic), which is rather illogical and undesirable in games where no
King participates (as it makes every move illegal).
---

diff --git a/moves.c b/moves.c
index 25263c8..2f6a706 100644
--- a/moves.c
+++ b/moves.c
@@ -1735,6 +1735,8 @@ CheckTest (Board board, int flags, int rf, int ff, int rt, int ft, int enPassant
 	}
     }
 
+    if(PieceToChar(king) == '.') return 0; // never in check if the royal piece does not participate
+
     if (rt >= 0) {
 	if (enPassant) {
 	    captured = board[rf][ft];