X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=backend.c;h=9a9d0a44e7758b7878dbeb3e73a69429c840b9f5;hb=dcd563701f4164a6f8b2e8e8c84ddb96601e147c;hp=6bf57ac091d1a9e9d61e8fc2a5b38fdd534a803f;hpb=9bd3575bc8766abc4fd44f00674b20397266521d;p=xboard.git

diff --git a/backend.c b/backend.c
index 6bf57ac..9a9d0a4 100644
--- a/backend.c
+++ b/backend.c
@@ -5494,6 +5494,7 @@ char yy_textstr[8000];
 Boolean
 ParseOneMove (char *move, int moveNum, ChessMove *moveType, int *fromX, int *fromY, int *toX, int *toY, char *promoChar)
 {
+    int badFrom;
     *moveType = yylexstr(moveNum, move, yy_textstr, sizeof yy_textstr);
 
     switch (*moveType) {
@@ -5525,7 +5526,9 @@ ParseOneMove (char *move, int moveNum, ChessMove *moveType, int *fromX, int *fro
         *toX = currentMoveString[2] - AAA;
         *toY = currentMoveString[3] - ONE;
 	*promoChar = currentMoveString[4];
-        if (*fromX < BOARD_LEFT || *fromX >= BOARD_RGHT || *fromY < 0 || *fromY >= BOARD_HEIGHT ||
+	badFrom = (*fromX < BOARD_LEFT || *fromX >= BOARD_RGHT || *fromY < 0 || *fromY >= BOARD_HEIGHT);
+	if(currentMoveString[1] == '@') { badFrom = FALSE; *fromX = CharToPiece(currentMoveString[0]); *fromY = DROP_RANK; } // illegal drop
+        if (badFrom ||
             *toX < BOARD_LEFT || *toX >= BOARD_RGHT || *toY < 0 || *toY >= BOARD_HEIGHT) {
     if (appData.debugMode) {
         fprintf(debugFP, "Off-board move (%d,%d)-(%d,%d)%c, type = %d\n", *fromX, *fromY, *toX, *toY, *promoChar, *moveType);