Allow writing text on pieces
[xboard.git] / backend.c
index ab8d1d5..dd962a3 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -148,6 +148,7 @@ extern int gettimeofday(struct timeval *, struct timezone *);
 #endif
 #include "backendz.h"
 #include "evalgraph.h"
+#include "engineoutput.h"
 #include "gettext.h"
 
 #ifdef ENABLE_NLS
@@ -250,7 +251,6 @@ static int NonStandardBoardSize P((VariantClass v, int w, int h, int s));
 #endif
 
 ChessProgramState *WhitePlayer();
-void InsertIntoMemo P((int which, char *text)); // [HGM] kibitz: in engineo.c
 int VerifyDisplayMode P(());
 
 char *GetInfoFromComment( int, char * ); // [HGM] PV time: returns stripped comment
@@ -289,6 +289,7 @@ int chattingPartner;
 char marker[BOARD_RANKS][BOARD_FILES]; /* [HGM] marks for target squares */
 char legal[BOARD_RANKS][BOARD_FILES];  /* [HGM] legal target squares */
 char lastMsg[MSG_SIZ];
+char lastTalker[MSG_SIZ];
 ChessSquare pieceSweep = EmptySquare;
 ChessSquare promoSweep = EmptySquare, defaultPromoChoice;
 int promoDefaultAltered;
@@ -415,6 +416,7 @@ PosFlags (index)
   default:
     break;
   }
+  if(appData.fischerCastling) flags |= F_FRC_TYPE_CASTLING, flags &= ~F_ALL_CASTLE_OK; // [HGM] fischer
   return flags;
 }
 
@@ -777,8 +779,7 @@ UnloadEngine (ChessProgramState *cps)
            ExitAnalyzeMode();
             DoSleep( appData.delayBeforeQuit );
            SendToProgram("quit\n", cps);
-            DoSleep( appData.delayAfterQuit );
-           DestroyChildProcess(cps->pr, cps->useSigterm);
+           DestroyChildProcess(cps->pr, 4 + cps->useSigterm);
        }
        cps->pr = NoProc;
        if(appData.debugMode) fprintf(debugFP, "Unload %s\n", cps->which);
@@ -2829,7 +2830,7 @@ read_from_ics (InputSourceRef isr, VOIDSTAR closure, char *data, int count, int
     int backup;    /* [DM] For zippy color lines */
     char *p;
     char talker[MSG_SIZ]; // [HGM] chat
-    int channel;
+    int channel, collective=0;
 
     connectionAlive = TRUE; // [HGM] alive: I think, therefore I am...
 
@@ -3071,8 +3072,18 @@ read_from_ics (InputSourceRef isr, VOIDSTAR closure, char *data, int count, int
                        char mess[MSG_SIZ];
                        snprintf(mess, MSG_SIZ, "%s%s", talker, parse);
                        OutputChatMessage(chattingPartner, mess);
+                       if(collective == 1) { // broadcasted talk also goes to private chatbox of talker
+                           int p;
+                           talker[strlen(talker+1)-1] = NULLCHAR; // strip closing delimiter
+                           for(p=0; p<MAX_CHAT; p++) if(!StrCaseCmp(talker+1, chatPartner[p])) {
+                               snprintf(mess, MSG_SIZ, "%s: %s", chatPartner[chattingPartner], parse);
+                               OutputChatMessage(p, mess);
+                               break;
+                           }
+                       }
                        chattingPartner = -1;
-                       next_out = i+1; // [HGM] suppress printing in ICS window
+                       if(collective != 3) next_out = i+1; // [HGM] suppress printing in ICS window
+                       collective = 0;
                    } else
                    if(!suppressKibitz) // [HGM] kibitz
                        AppendComment(forwardMostMove, StripHighlight(parse), TRUE);
@@ -3288,18 +3299,20 @@ read_from_ics (InputSourceRef isr, VOIDSTAR closure, char *data, int count, int
                                           looking_at(buf, &i, "*(*)(*)(*)(*):") && sscanf(star_match[4], "%d", &channel) == 1 )) {
                int p;
                sscanf(star_match[0], "%[^(]", talker+1); // strip (C) or (U) off ICS handle
-               chattingPartner = -1;
+               chattingPartner = -1; collective = 0;
 
                if(channel >= 0) // channel broadcast; look if there is a chatbox for this channel
                for(p=0; p<MAX_CHAT; p++) {
+                   collective = 1;
                    if(chatPartner[p][0] >= '0' && chatPartner[p][0] <= '9' && channel == atoi(chatPartner[p])) {
                    talker[0] = '['; strcat(talker, "] ");
-                   Colorize(channel == 1 ? ColorChannel1 : ColorChannel, FALSE);
+                   Colorize((channel == 1 ? ColorChannel1 : ColorChannel), FALSE);
                    chattingPartner = p; break;
                    }
                } else
                if(buf[i-3] == 'e') // kibitz; look if there is a KIBITZ chatbox
                for(p=0; p<MAX_CHAT; p++) {
+                   collective = 1;
                    if(!strcmp("kibitzes", chatPartner[p])) {
                        talker[0] = '['; strcat(talker, "] ");
                        chattingPartner = p; break;
@@ -3307,6 +3320,7 @@ read_from_ics (InputSourceRef isr, VOIDSTAR closure, char *data, int count, int
                } else
                if(buf[i-3] == 'r') // whisper; look if there is a WHISPER chatbox
                for(p=0; p<MAX_CHAT; p++) {
+                   collective = 1;
                    if(!strcmp("whispers", chatPartner[p])) {
                        talker[0] = '['; strcat(talker, "] ");
                        chattingPartner = p; break;
@@ -3315,6 +3329,7 @@ read_from_ics (InputSourceRef isr, VOIDSTAR closure, char *data, int count, int
                if(buf[i-3] == 't' || buf[oldi+2] == '>') {// shout, c-shout or it; look if there is a 'shouts' chatbox
                  if(buf[i-8] == '-' && buf[i-3] == 't')
                  for(p=0; p<MAX_CHAT; p++) { // c-shout; check if dedicatesd c-shout box exists
+                   collective = 1;
                    if(!strcmp("c-shouts", chatPartner[p])) {
                        talker[0] = '('; strcat(talker, ") "); Colorize(ColorSShout, FALSE);
                        chattingPartner = p; break;
@@ -3322,6 +3337,7 @@ read_from_ics (InputSourceRef isr, VOIDSTAR closure, char *data, int count, int
                  }
                  if(chattingPartner < 0)
                  for(p=0; p<MAX_CHAT; p++) {
+                   collective = 1;
                    if(!strcmp("shouts", chatPartner[p])) {
                        if(buf[oldi+2] == '>') { talker[0] = '<'; strcat(talker, "> "); Colorize(ColorShout, FALSE); }
                        else if(buf[i-8] == '-') { talker[0] = '('; strcat(talker, ") "); Colorize(ColorSShout, FALSE); }
@@ -3332,18 +3348,23 @@ read_from_ics (InputSourceRef isr, VOIDSTAR closure, char *data, int count, int
                }
                if(chattingPartner<0) // if not, look if there is a chatbox for this indivdual
                for(p=0; p<MAX_CHAT; p++) if(!StrCaseCmp(talker+1, chatPartner[p])) {
-                   talker[0] = 0; Colorize(ColorTell, FALSE);
+                   talker[0] = 0;
+                   Colorize(ColorTell, FALSE);
+                   if(collective) safeStrCpy(talker, "broadcasts: ", MSG_SIZ);
+                   collective |= 2;
                    chattingPartner = p; break;
                }
-               if(chattingPartner<0) i = oldi; else {
+               if(chattingPartner<0) i = oldi, safeStrCpy(lastTalker, talker+1, MSG_SIZ); else {
                    Colorize(curColor, TRUE); // undo the bogus colorations we just made to trigger the souds
-                   if(oldi > 0 && buf[oldi-1] == '\n') oldi--;
-                   if (oldi > next_out) SendToPlayer(&buf[next_out], oldi - next_out);
                    started = STARTED_COMMENT;
                    parse_pos = 0; parse[0] = NULLCHAR;
                    savingComment = 3 + chattingPartner; // counts as TRUE
-                   suppressKibitz = TRUE;
-                   continue;
+                   if(collective == 3) i = oldi; else {
+                       suppressKibitz = TRUE;
+                       if(oldi > 0 && buf[oldi-1] == '\n') oldi--;
+                       if (oldi > next_out) SendToPlayer(&buf[next_out], oldi - next_out);
+                       continue;
+                   }
                }
            } // [HGM] chat: end of patch
 
@@ -3427,7 +3448,7 @@ read_from_ics (InputSourceRef isr, VOIDSTAR closure, char *data, int count, int
                      parse[parse_pos] = NULLCHAR;
                      started = STARTED_COMMENT;
                      savingComment = TRUE;
-                   } else {
+                   } else if(collective != 3) {
                      started = STARTED_CHATTER;
                      savingComment = FALSE;
                    }
@@ -5094,8 +5115,7 @@ SendMoveToProgram (int moveNum, ChessProgramState *cps)
       /* Added by Tord: Send castle moves in "O-O" in FRC games if required by
        * the engine. It would be nice to have a better way to identify castle
        * moves here. */
-      if((gameInfo.variant == VariantFischeRandom || gameInfo.variant == VariantCapaRandom)
-                                                                        && cps->useOOCastle) {
+      if(appData.fischerCastling && cps->useOOCastle) {
         int fromX = moveList[moveNum][0] - AAA;
         int fromY = moveList[moveNum][1] - ONE;
         int toX = moveList[moveNum][2] - AAA;
@@ -5648,6 +5668,9 @@ LoadMultiPV (int x, int y, char *buf, int index, int *start, int *end, int pane)
        } else if(strstr(buf+lineStart, "exclude:") == buf+lineStart) { // exclude moves clicked
                ExcludeClick(origIndex - lineStart);
                return FALSE;
+       } else if(!strncmp(buf+lineStart, "dep\t", 4)) {                // column headers clicked
+               Collapse(origIndex - lineStart);
+               return FALSE;
        }
        ParsePV(buf+startPV, FALSE, gameMode != AnalyzeMode);
        *start = startPV; *end = index-1;
@@ -5969,7 +5992,7 @@ InitPosition (int redraw)
     oldh = gameInfo.holdingsWidth;
     static int oldv;
 
-    if(appData.icsActive) shuffleOpenings = FALSE; // [HGM] shuffle: in ICS mode, only shuffle on ICS request
+    if(appData.icsActive) shuffleOpenings = appData.fischerCastling = FALSE; // [HGM] shuffle: in ICS mode, only shuffle on ICS request
 
     /* [AS] Initialize pv info list [HGM] and game status */
     {
@@ -6010,6 +6033,7 @@ InitPosition (int redraw)
     switch (gameInfo.variant) {
     case VariantFischeRandom:
       shuffleOpenings = TRUE;
+      appData.fischerCastling = TRUE;
     default:
       break;
     case VariantShatranj:
@@ -6040,6 +6064,7 @@ InitPosition (int redraw)
       break;
     case VariantCapaRandom:
       shuffleOpenings = TRUE;
+      appData.fischerCastling = TRUE;
     case VariantCapablanca:
       pieces = CapablancaArray;
       gameInfo.boardWidth = 10;
@@ -6791,6 +6816,7 @@ int lastLoadGameUseList = FALSE;
 char lastLoadGameTitle[MSG_SIZ], lastLoadPositionTitle[MSG_SIZ];
 ChessMove lastLoadGameStart = EndOfFile;
 int doubleClick;
+Boolean addToBookFlag;
 
 void
 UserMoveEvent(int fromX, int fromY, int toX, int toY, int promoChar)
@@ -6970,6 +6996,16 @@ UserMoveEvent(int fromX, int fromY, int toX, int toY, int promoChar)
        return;
     }
 
+    if(addToBookFlag) { // adding moves to book
+       char buf[MSG_SIZ], move[MSG_SIZ];
+        CoordsToAlgebraic(boards[currentMove], PosFlags(currentMove), fromY, fromX, toY, toX, promoChar, move);
+       snprintf(buf, MSG_SIZ, "  0.0%%     1  %s\n", move);
+       AddBookMove(buf);
+       addToBookFlag = FALSE;
+       ClearHighlights();
+       return;
+    }
+
     FinishMove(moveType, fromX, fromY, toX, toY, promoChar);
 }
 
@@ -7442,7 +7478,7 @@ LeftClick (ClickType clickType, int xPix, int yPix)
        /* Check if clicking again on the same color piece */
        fromP = boards[currentMove][fromY][fromX];
        toP = boards[currentMove][y][x];
-       frc = gameInfo.variant == VariantFischeRandom || gameInfo.variant == VariantCapaRandom || gameInfo.variant == VariantSChess;
+       frc = appData.fischerCastling || gameInfo.variant == VariantSChess;
        if( (killX < 0 || x != fromX || y != fromY) && // [HGM] lion: do not interpret igui as deselect!
           ((WhitePawn <= fromP && fromP <= WhiteKing &&
             WhitePawn <= toP && toP <= WhiteKing &&
@@ -8625,7 +8661,7 @@ FakeBookMove: // [HGM] book: we jump here to simulate machine moves after book h
                 GameEnds(machineWhite ? BlackWins : WhiteWins,
                            buf1, GE_XBOARD);
                return;
-           } else if(gameInfo.variant != VariantFischeRandom && gameInfo.variant != VariantCapaRandom)
+           } else if(!appData.fischerCastling)
            /* [HGM] Kludge to handle engines that send FRC-style castling
               when they shouldn't (like TSCP-Gothic) */
            switch(moveType) {
@@ -8669,7 +8705,7 @@ FakeBookMove: // [HGM] book: we jump here to simulate machine moves after book h
         }
 
         /* [AS] Adjudicate game if needed (note: remember that forwardMostMove now points past the last move) */
-        if( gameMode == TwoMachinesPlay && adjudicateLossThreshold != 0 && forwardMostMove >= adjudicateLossPlies ) {
+        if( gameMode == TwoMachinesPlay && appData.adjudicateLossThreshold != 0 && forwardMostMove >= adjudicateLossPlies ) {
             int count = 0;
 
             while( count < adjudicateLossPlies ) {
@@ -8678,8 +8714,8 @@ FakeBookMove: // [HGM] book: we jump here to simulate machine moves after book h
                 if( count & 1 ) {
                     score = -score; /* Flip score for winning side */
                 }
-
-                if( score > adjudicateLossThreshold ) {
+printf("score=%d count=%d\n",score,count);
+                if( score > appData.adjudicateLossThreshold ) {
                     break;
                 }
 
@@ -8723,7 +8759,6 @@ FakeBookMove: // [HGM] book: we jump here to simulate machine moves after book h
                        (unsigned int)programStats.nodes / (10*abs(programStats.time) + 1.),
                        programStats.movelist);
                SendToICS(buf);
-if(appData.debugMode) fprintf(debugFP, "nodes = %d, %lld\n", (int) programStats.nodes, programStats.nodes);
          }
        }
 #endif
@@ -9818,11 +9853,11 @@ ApplyMove (int fromX, int fromY, int toX, int toY, int promoChar, Board board)
        }
         piece = board[toY][toX] = (ChessSquare) fromX;
   } else {
-      ChessSquare victim;
+//      ChessSquare victim;
       int i;
 
       if( killX >= 0 && killY >= 0 ) // [HGM] lion: Lion trampled over something
-           victim = board[killY][killX],
+//           victim = board[killY][killX],
            board[killY][killX] = EmptySquare,
            board[EP_STATUS] = EP_CAPTURE;
 
@@ -11352,8 +11387,7 @@ GameEnds (ChessMove result, char *resultDetails, int whosays)
            ExitAnalyzeMode();
             DoSleep( appData.delayBeforeQuit );
            SendToProgram("quit\n", &first);
-            DoSleep( appData.delayAfterQuit );
-           DestroyChildProcess(first.pr, first.useSigterm);
+           DestroyChildProcess(first.pr, 4 + first.useSigterm);
            first.reload = TRUE;
        }
        first.pr = NoProc;
@@ -11378,8 +11412,7 @@ GameEnds (ChessMove result, char *resultDetails, int whosays)
        if (second.pr != NoProc) {
             DoSleep( appData.delayBeforeQuit );
            SendToProgram("quit\n", &second);
-            DoSleep( appData.delayAfterQuit );
-           DestroyChildProcess(second.pr, second.useSigterm);
+           DestroyChildProcess(second.pr, 4 + second.useSigterm);
            second.reload = TRUE;
        }
        second.pr = NoProc;
@@ -13949,6 +13982,7 @@ ExitEvent (int status)
       return;
     }
 
+    if (appData.icsActive) printf("\n"); // [HGM] end on new line after closing XBoard
     if (appData.icsActive && appData.colorize) Colorize(ColorNone, FALSE);
 
     if (telnetISR != NULL) {
@@ -13975,14 +14009,12 @@ ExitEvent (int status)
 
         DoSleep( appData.delayBeforeQuit );
        SendToProgram("quit\n", &first);
-        DoSleep( appData.delayAfterQuit );
-       DestroyChildProcess(first.pr, 10 /* [AS] first.useSigterm */ );
+       DestroyChildProcess(first.pr, 4 + first.useSigterm /* [AS] first.useSigterm */ );
     }
     if (second.pr != NoProc) {
         DoSleep( appData.delayBeforeQuit );
        SendToProgram("quit\n", &second);
-        DoSleep( appData.delayAfterQuit );
-       DestroyChildProcess(second.pr, 10 /* [AS] second.useSigterm */ );
+       DestroyChildProcess(second.pr, 4 + second.useSigterm /* [AS] second.useSigterm */ );
     }
     if (first.isr != NULL) {
        RemoveInputSource(first.isr);
@@ -14213,7 +14245,10 @@ AnalyzeModeEvent ()
        first.maybeThinking = FALSE; /* avoid killing GNU Chess */
        EngineOutputPopUp();
     }
-    if (!appData.icsEngineAnalyze) gameMode = AnalyzeMode;
+    if (!appData.icsEngineAnalyze) {
+       gameMode = AnalyzeMode;
+       ClearEngineOutputPane(0); // [TK] exclude: to print exclusion/multipv header
+    }
     pausing = FALSE;
     ModeHighlight();
     SetGameInfo();
@@ -17645,7 +17680,7 @@ PositionToFEN (int move, char *overrideCastling, int moveCounts)
   } else {
   if(nrCastlingRights) {
      q = p;
-     if(gameInfo.variant == VariantFischeRandom || gameInfo.variant == VariantCapaRandom) {
+     if(appData.fischerCastling) {
        /* [HGM] write directly from rights */
            if(boards[move][CASTLING][2] != NoRights &&
               boards[move][CASTLING][0] != NoRights   )
@@ -17753,7 +17788,7 @@ PositionToFEN (int move, char *overrideCastling, int moveCounts)
 Boolean
 ParseFEN (Board board, int *blackPlaysFirst, char *fen, Boolean autoSize)
 {
-    int i, j, k, w=0;
+    int i, j, k, w=0, subst=0, shuffle=0;
     char *p, c;
     int emptycount, virgin[BOARD_FILES];
     ChessSquare piece;
@@ -17792,6 +17827,16 @@ ParseFEN (Board board, int *blackPlaysFirst, char *fen, Boolean autoSize)
                 if (j + emptycount > gameInfo.boardWidth) return FALSE;
                 while (emptycount--)
                         board[i][(j++)+gameInfo.holdingsWidth] = EmptySquare;
+            } else if (*p == '<') {
+                if(i == BOARD_HEIGHT-1) shuffle = 1;
+                else if (i != 0 || !shuffle) return FALSE;
+                p++;
+            } else if (shuffle && *p == '>') {
+                p++; // for now ignore closing shuffle range, and assume rank-end
+            } else if (*p == '?') {
+                if (j >= gameInfo.boardWidth) return FALSE;
+                if (i != 0  && i != BOARD_HEIGHT-1) return FALSE; // only on back-rank
+               board[i][(j++)+gameInfo.holdingsWidth] = ClearBoard; p++; subst++; // placeHolder
             } else if (*p == '+' || isalpha(*p)) {
                 if (j >= gameInfo.boardWidth) return FALSE;
                 if(*p=='+') {
@@ -17830,7 +17875,9 @@ ParseFEN (Board board, int *blackPlaysFirst, char *fen, Boolean autoSize)
     /* [HGM] look for Crazyhouse holdings here */
     while(*p==' ') p++;
     if( gameInfo.holdingsWidth && p[-1] == '/' || *p == '[') {
+        int swap=0, wcnt=0, bcnt=0;
         if(*p == '[') p++;
+        if(*p == '<') swap++, p++;
         if(*p == '-' ) p++; /* empty holdings */ else {
             if( !gameInfo.holdingsWidth ) return FALSE; /* no room to put holdings! */
             /* if we would allow FEN reading to set board size, we would   */
@@ -17843,18 +17890,46 @@ ParseFEN (Board board, int *blackPlaysFirst, char *fen, Boolean autoSize)
                     if( i >= gameInfo.holdingsSize ) return FALSE;
                     board[BOARD_HEIGHT-1-i][0] = piece; /* black holdings */
                     board[BOARD_HEIGHT-1-i][1]++;       /* black counts   */
+                    bcnt++;
                 } else {
                     i = (int)piece - (int)WhitePawn;
                    i = PieceToNumber((ChessSquare)i);
                     if( i >= gameInfo.holdingsSize ) return FALSE;
                     board[i][BOARD_WIDTH-1] = piece;    /* white holdings */
                     board[i][BOARD_WIDTH-2]++;          /* black holdings */
+                    wcnt++;
                 }
             }
+            if(subst) { // substitute back-rank question marks by holdings pieces
+                for(j=BOARD_LEFT; j<BOARD_RGHT; j++) {
+                    int k, m, n = bcnt + 1;
+                    if(board[0][j] == ClearBoard) {
+                        if(!wcnt) return FALSE;
+                        n = rand() % wcnt;
+                        for(k=0, m=n; k<gameInfo.holdingsSize; k++) if((m -= board[k][BOARD_WIDTH-2]) < 0) {
+                            board[0][j] = board[k][BOARD_WIDTH-1]; wcnt--;
+                            if(--board[k][BOARD_WIDTH-2] == 0) board[k][BOARD_WIDTH-1] = EmptySquare;
+                            break;
+                        }
+                    }
+                    if(board[BOARD_HEIGHT-1][j] == ClearBoard) {
+                        if(!bcnt) return FALSE;
+                        if(n >= bcnt) n = rand() % bcnt; // use same randomization for black and white if possible
+                        for(k=0, m=n; k<gameInfo.holdingsSize; k++) if((n -= board[BOARD_HEIGHT-1-k][1]) < 0) {
+                            board[BOARD_HEIGHT-1][j] = board[BOARD_HEIGHT-1-k][0]; bcnt--;
+                            if(--board[BOARD_HEIGHT-1-k][1] == 0) board[BOARD_HEIGHT-1-k][0] = EmptySquare;
+                            break;
+                        }
+                    }
+                }
+                subst = 0;
+            }
         }
         if(*p == ']') p++;
     }
 
+    if(subst) return FALSE; // substitution requested, but no holdings
+
     while(*p == ' ') p++;
 
     /* Active color */
@@ -17881,7 +17956,7 @@ ParseFEN (Board board, int *blackPlaysFirst, char *fen, Boolean autoSize)
     board[EP_STATUS] = EP_UNKNOWN;
     for(i=0; i<nrCastlingRights; i++ ) {
         board[CASTLING][i] =
-            gameInfo.variant == VariantFischeRandom || gameInfo.variant == VariantCapaRandom ? NoRights : initialRights[i];
+            appData.fischerCastling ? NoRights : initialRights[i];
     }   /* assume possible unless obviously impossible */
     if(initialRights[0]!=NoRights && board[castlingRank[0]][initialRights[0]] != WhiteRook) board[CASTLING][0] = NoRights;
     if(initialRights[1]!=NoRights && board[castlingRank[1]][initialRights[1]] != WhiteRook) board[CASTLING][1] = NoRights;
@@ -17895,6 +17970,7 @@ ParseFEN (Board board, int *blackPlaysFirst, char *fen, Boolean autoSize)
 
     while(*p==' ') p++;
     if(nrCastlingRights) {
+      int fischer = 0;
       if(gameInfo.variant == VariantSChess) for(i=0; i<BOARD_FILES; i++) virgin[i] = 0;
       if(*p >= 'A' && *p <= 'Z' || *p >= 'a' && *p <= 'z' || *p=='-') {
           /* castling indicator present, so default becomes no castlings */
@@ -17903,7 +17979,7 @@ ParseFEN (Board board, int *blackPlaysFirst, char *fen, Boolean autoSize)
           }
       }
       while(*p=='K' || *p=='Q' || *p=='k' || *p=='q' || *p=='-' ||
-             (gameInfo.variant == VariantFischeRandom || gameInfo.variant == VariantCapaRandom || gameInfo.variant == VariantSChess) &&
+             (appData.fischerCastling || gameInfo.variant == VariantSChess) &&
              ( *p >= 'a' && *p < 'a' + gameInfo.boardWidth) ||
              ( *p >= 'A' && *p < 'A' + gameInfo.boardWidth)   ) {
         int c = *p++, whiteKingFile=NoRights, blackKingFile=NoRights;
@@ -17925,6 +18001,7 @@ ParseFEN (Board board, int *blackPlaysFirst, char *fen, Boolean autoSize)
               board[CASTLING][2] = whiteKingFile;
              if(board[CASTLING][0] != NoRights) virgin[board[CASTLING][0]] |= VIRGIN_W;
              if(board[CASTLING][2] != NoRights) virgin[board[CASTLING][2]] |= VIRGIN_W;
+              if(whiteKingFile != BOARD_WIDTH>>1|| i != BOARD_RGHT-1) fischer = 1;
               break;
           case'Q':
               for(i=BOARD_LEFT;  i<BOARD_RGHT && board[0][i]!=WhiteRook && i<whiteKingFile; i++);
@@ -17932,6 +18009,7 @@ ParseFEN (Board board, int *blackPlaysFirst, char *fen, Boolean autoSize)
               board[CASTLING][2] = whiteKingFile;
              if(board[CASTLING][1] != NoRights) virgin[board[CASTLING][1]] |= VIRGIN_W;
              if(board[CASTLING][2] != NoRights) virgin[board[CASTLING][2]] |= VIRGIN_W;
+              if(whiteKingFile != BOARD_WIDTH>>1|| i != BOARD_LEFT) fischer = 1;
               break;
           case'k':
               for(i=BOARD_RGHT-1; board[BOARD_HEIGHT-1][i]!=BlackRook && i>blackKingFile; i--);
@@ -17939,6 +18017,7 @@ ParseFEN (Board board, int *blackPlaysFirst, char *fen, Boolean autoSize)
               board[CASTLING][5] = blackKingFile;
              if(board[CASTLING][3] != NoRights) virgin[board[CASTLING][3]] |= VIRGIN_B;
              if(board[CASTLING][5] != NoRights) virgin[board[CASTLING][5]] |= VIRGIN_B;
+              if(blackKingFile != BOARD_WIDTH>>1|| i != BOARD_RGHT-1) fischer = 1;
               break;
           case'q':
               for(i=BOARD_LEFT; i<BOARD_RGHT && board[BOARD_HEIGHT-1][i]!=BlackRook && i<blackKingFile; i++);
@@ -17946,6 +18025,7 @@ ParseFEN (Board board, int *blackPlaysFirst, char *fen, Boolean autoSize)
               board[CASTLING][5] = blackKingFile;
              if(board[CASTLING][4] != NoRights) virgin[board[CASTLING][4]] |= VIRGIN_B;
              if(board[CASTLING][5] != NoRights) virgin[board[CASTLING][5]] |= VIRGIN_B;
+              if(blackKingFile != BOARD_WIDTH>>1|| i != BOARD_LEFT) fischer = 1;
           case '-':
               break;
           default: /* FRC castlings */
@@ -17979,7 +18059,9 @@ ParseFEN (Board board, int *blackPlaysFirst, char *fen, Boolean autoSize)
       }
       for(i=0; i<nrCastlingRights; i++)
         if(board[CASTLING][i] != NoRights) initialRights[i] = board[CASTLING][i];
-      if(gameInfo.variant == VariantSChess) for(i=0; i<BOARD_FILES; i++) board[VIRGIN][i] = virgin[i];
+      if(gameInfo.variant == VariantSChess)
+        for(i=0; i<BOARD_FILES; i++) board[VIRGIN][i] = shuffle ? VIRGIN_W | VIRGIN_B : virgin[i]; // when shuffling assume all virgin
+      if(fischer && shuffle) appData.fischerCastling = TRUE;
     if (appData.debugMode) {
         fprintf(debugFP, "FEN castling rights:");
         for(i=0; i<nrCastlingRights; i++)
@@ -17990,6 +18072,8 @@ ParseFEN (Board board, int *blackPlaysFirst, char *fen, Boolean autoSize)
       while(*p==' ') p++;
     }
 
+    if(shuffle) SetUpShuffle(board, appData.defaultFrcPosition);
+
     /* read e.p. field in games that know e.p. capture */
     if(gameInfo.variant != VariantShogi    && gameInfo.variant != VariantXiangqi &&
        gameInfo.variant != VariantShatranj && gameInfo.variant != VariantCourier &&