if( count == backwardMostMove )
count -= initialRulePlies;
count = forwardMostMove - count;
+ if(gameInfo.variant == VariantXiangqi && ( count >= 100 || count >= 2*appData.ruleMoves ) ) {
+ // adjust reversible move counter for checks in Xiangqi
+ int i = forwardMostMove - count, inCheck = 0, lastCheck;
+ if(i < backwardMostMove) i = backwardMostMove;
+ while(i <= forwardMostMove) {
+ lastCheck = inCheck; // check evasion does not count
+ inCheck = (MateTest(boards[i], PosFlags(i)) == MT_CHECK);
+ if(inCheck || lastCheck) count--; // check does not count
+ i++;
+ }
+ }
if( count >= 100)
boards[forwardMostMove][EP_STATUS] = EP_RULE_DRAW;
/* this is used to judge if draw claims are legal */
if( (boards[forwardMostMove][fromY][fromX] == WhitePawn ||
boards[forwardMostMove][fromY][fromX] == BlackPawn ) &&
boards[forwardMostMove][toY][toX] == EmptySquare
- && fromX != toX )
+ && fromX != toX && fromY != toY)
fprintf(serverMoves, ":%c%c:%c%c", AAA+fromX, ONE+fromY, AAA+toX, ONE+fromY);
// promotion suffix
if(promoChar != NULLCHAR)