X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=backend.c;h=9495083aa91fce1df04f54ce255651fca63804cb;hb=90023cb65d9c783d7f045f839dec64292f50e524;hp=ec9cfbb29ab41d7167d43004b0553595da579b2e;hpb=c1f9fd66ab250f14d4e40383a242691ac40782da;p=xboard.git

diff --git a/backend.c b/backend.c
index ec9cfbb..9495083 100644
--- a/backend.c
+++ b/backend.c
@@ -8893,7 +8893,11 @@ FakeBookMove: // [HGM] book: we jump here to simulate machine moves after book h
     if(sscanf(message, "piece %s %s", buf2, buf1) == 2) {
       ChessSquare piece = WhitePawn;
       char *p=buf2;
-      if(cps != &first || appData.testLegality) return;
+      if(cps != &first || appData.testLegality && *engineVariant == NULLCHAR
+      /* For variants we don't have   */       && gameInfo.variant != VariantBerolina
+      /* correct rules for, we cannot */       && gameInfo.variant != VariantCylinder
+      /* enforce legality on our own! */       && gameInfo.variant != VariantUnknown
+                                               && gameInfo.variant != VariantFairy    ) return;
       if(*p == '+') piece = CHUPROMOTED WhitePawn, p++;
       piece += CharToPiece(*p) - WhitePawn;
       if(piece < EmptySquare) {