SetProgramStats( &stats );
}
+int
+Adjudicate(ChessProgramState *cps)
+{ // [HGM] some adjudications useful with buggy engines
+ // [HGM] adjudicate: made into separate routine, which now can be called after every move
+ // In any case it determnes if the game is a claimable draw (filling in EP_STATUS).
+ // Actually ending the game is now based on the additional internal condition canAdjudicate.
+ // Only when the game is ended, and the opponent is a computer, this opponent gets the move relayed.
+ int k, count = 0; static int bare = 1;
+ ChessProgramState *engineOpponent = (gameMode == TwoMachinesPlay ? cps->other : (cps ? NULL : &first));
+ Boolean canAdjudicate = !appData.icsActive;
+
+ // most tests only when we understand the game, i.e. legality-checking on, and (for the time being) no piece drops
+ if(gameInfo.holdingsSize == 0 || gameInfo.variant == VariantSuper || gameInfo.variant == VariantGreat) {
+ if( appData.testLegality )
+ { /* [HGM] Some more adjudications for obstinate engines */
+ int NrWN=0, NrBN=0, NrWB=0, NrBB=0, NrWR=0, NrBR=0,
+ NrWQ=0, NrBQ=0, NrW=0, NrK=0, bishopsColor = 0,
+ NrPieces=0, NrPawns=0, PawnAdvance=0, i, j;
+ static int moveCount = 6;
+ ChessMove result;
+ char *reason = NULL;
+
+ /* Count what is on board. */
+ for(i=0; i<BOARD_HEIGHT; i++) for(j=BOARD_LEFT; j<BOARD_RGHT; j++)
+ { ChessSquare p = boards[forwardMostMove][i][j];
+ int m=i;
+
+ switch((int) p)
+ { /* count B,N,R and other of each side */
+ case WhiteKing:
+ case BlackKing:
+ NrK++; break; // [HGM] atomic: count Kings
+ case WhiteKnight:
+ NrWN++; break;
+ case WhiteBishop:
+ case WhiteFerz: // [HGM] shatranj: kludge to mke it work in shatranj
+ bishopsColor |= 1 << ((i^j)&1);
+ NrWB++; break;
+ case BlackKnight:
+ NrBN++; break;
+ case BlackBishop:
+ case BlackFerz: // [HGM] shatranj: kludge to mke it work in shatranj
+ bishopsColor |= 1 << ((i^j)&1);
+ NrBB++; break;
+ case WhiteRook:
+ NrWR++; break;
+ case BlackRook:
+ NrBR++; break;
+ case WhiteQueen:
+ NrWQ++; break;
+ case BlackQueen:
+ NrBQ++; break;
+ case EmptySquare:
+ break;
+ case BlackPawn:
+ m = 7-i;
+ case WhitePawn:
+ PawnAdvance += m; NrPawns++;
+ }
+ NrPieces += (p != EmptySquare);
+ NrW += ((int)p < (int)BlackPawn);
+ if(gameInfo.variant == VariantXiangqi &&
+ (p == WhiteFerz || p == WhiteAlfil || p == BlackFerz || p == BlackAlfil)) {
+ NrPieces--; // [HGM] XQ: do not count purely defensive pieces
+ NrW -= ((int)p < (int)BlackPawn);
+ }
+ }
+
+ /* Some material-based adjudications that have to be made before stalemate test */
+ if(gameInfo.variant == VariantAtomic && NrK < 2) {
+ // [HGM] atomic: stm must have lost his King on previous move, as destroying own K is illegal
+ boards[forwardMostMove][EP_STATUS] = EP_CHECKMATE; // make claimable as if stm is checkmated
+ if(canAdjudicate && appData.checkMates) {
+ if(engineOpponent)
+ SendMoveToProgram(forwardMostMove-1, engineOpponent); // make sure opponent gets move
+ ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
+ GameEnds( WhiteOnMove(forwardMostMove) ? BlackWins : WhiteWins,
+ "Xboard adjudication: King destroyed", GE_XBOARD );
+ return 1;
+ }
+ }
+
+ /* Bare King in Shatranj (loses) or Losers (wins) */
+ if( NrW == 1 || NrPieces - NrW == 1) {
+ if( gameInfo.variant == VariantLosers) { // [HGM] losers: bare King wins (stm must have it first)
+ boards[forwardMostMove][EP_STATUS] = EP_WINS; // mark as win, so it becomes claimable
+ if(canAdjudicate && appData.checkMates) {
+ if(engineOpponent)
+ SendMoveToProgram(forwardMostMove-1, engineOpponent); // make sure opponent gets to see move
+ ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
+ GameEnds( WhiteOnMove(forwardMostMove) ? WhiteWins : BlackWins,
+ "Xboard adjudication: Bare king", GE_XBOARD );
+ return 1;
+ }
+ } else
+ if( gameInfo.variant == VariantShatranj && --bare < 0)
+ { /* bare King */
+ boards[forwardMostMove][EP_STATUS] = EP_WINS; // make claimable as win for stm
+ if(canAdjudicate && appData.checkMates) {
+ /* but only adjudicate if adjudication enabled */
+ if(engineOpponent)
+ SendMoveToProgram(forwardMostMove-1, engineOpponent); // make sure opponent gets move
+ ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
+ GameEnds( NrW > 1 ? WhiteWins : NrPieces - NrW > 1 ? BlackWins : GameIsDrawn,
+ "Xboard adjudication: Bare king", GE_XBOARD );
+ return 1;
+ }
+ }
+ } else bare = 1;
+
+
+ // don't wait for engine to announce game end if we can judge ourselves
+ switch (MateTest(boards[forwardMostMove], PosFlags(forwardMostMove)) ) {
+ case MT_CHECK:
+ if(gameInfo.variant == Variant3Check) { // [HGM] 3check: when in check, test if 3rd time
+ int i, checkCnt = 0; // (should really be done by making nr of checks part of game state)
+ for(i=forwardMostMove-2; i>=backwardMostMove; i-=2) {
+ if(MateTest(boards[i], PosFlags(i)) == MT_CHECK)
+ checkCnt++;
+ if(checkCnt >= 2) {
+ reason = "Xboard adjudication: 3rd check";
+ boards[forwardMostMove][EP_STATUS] = EP_CHECKMATE;
+ break;
+ }
+ }
+ }
+ case MT_NONE:
+ default:
+ break;
+ case MT_STALEMATE:
+ case MT_STAINMATE:
+ reason = "Xboard adjudication: Stalemate";
+ if((signed char)boards[forwardMostMove][EP_STATUS] != EP_CHECKMATE) { // [HGM] don't touch win through baring or K-capt
+ boards[forwardMostMove][EP_STATUS] = EP_STALEMATE; // default result for stalemate is draw
+ if(gameInfo.variant == VariantLosers || gameInfo.variant == VariantGiveaway) // [HGM] losers:
+ boards[forwardMostMove][EP_STATUS] = EP_WINS; // in these variants stalemated is always a win
+ else if(gameInfo.variant == VariantSuicide) // in suicide it depends
+ boards[forwardMostMove][EP_STATUS] = NrW == NrPieces-NrW ? EP_STALEMATE :
+ ((NrW < NrPieces-NrW) != WhiteOnMove(forwardMostMove) ?
+ EP_CHECKMATE : EP_WINS);
+ else if(gameInfo.variant == VariantShatranj || gameInfo.variant == VariantXiangqi)
+ boards[forwardMostMove][EP_STATUS] = EP_CHECKMATE; // and in these variants being stalemated loses
+ }
+ break;
+ case MT_CHECKMATE:
+ reason = "Xboard adjudication: Checkmate";
+ boards[forwardMostMove][EP_STATUS] = (gameInfo.variant == VariantLosers ? EP_WINS : EP_CHECKMATE);
+ break;
+ }
+
+ switch(i = (signed char)boards[forwardMostMove][EP_STATUS]) {
+ case EP_STALEMATE:
+ result = GameIsDrawn; break;
+ case EP_CHECKMATE:
+ result = WhiteOnMove(forwardMostMove) ? BlackWins : WhiteWins; break;
+ case EP_WINS:
+ result = WhiteOnMove(forwardMostMove) ? WhiteWins : BlackWins; break;
+ default:
+ result = (ChessMove) 0;
+ }
+ if(canAdjudicate && appData.checkMates && result) { // [HGM] mates: adjudicate finished games if requested
+ if(engineOpponent)
+ SendMoveToProgram(forwardMostMove-1, engineOpponent); /* make sure opponent gets to see move */
+ ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
+ GameEnds( result, reason, GE_XBOARD );
+ return 1;
+ }
+
+ /* Next absolutely insufficient mating material. */
+ if( NrPieces == 2 || gameInfo.variant != VariantXiangqi &&
+ gameInfo.variant != VariantShatranj && // [HGM] baring will remain possible
+ (NrPieces == 3 && NrWN+NrBN+NrWB+NrBB == 1 ||
+ NrPieces == NrBB+NrWB+2 && bishopsColor != 3)) // [HGM] all Bishops (Ferz!) same color
+ { /* KBK, KNK, KK of KBKB with like Bishops */
+
+ /* always flag draws, for judging claims */
+ boards[forwardMostMove][EP_STATUS] = EP_INSUF_DRAW;
+
+ if(canAdjudicate && appData.materialDraws) {
+ /* but only adjudicate them if adjudication enabled */
+ if(engineOpponent) {
+ SendToProgram("force\n", engineOpponent); // suppress reply
+ SendMoveToProgram(forwardMostMove-1, engineOpponent); /* make sure opponent gets to see last move */
+ }
+ ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
+ GameEnds( GameIsDrawn, "Xboard adjudication: Insufficient mating material", GE_XBOARD );
+ return 1;
+ }
+ }
+
+ /* Then some trivial draws (only adjudicate, cannot be claimed) */
+ if(NrPieces == 4 &&
+ ( NrWR == 1 && NrBR == 1 /* KRKR */
+ || NrWQ==1 && NrBQ==1 /* KQKQ */
+ || NrWN==2 || NrBN==2 /* KNNK */
+ || NrWN+NrWB == 1 && NrBN+NrBB == 1 /* KBKN, KBKB, KNKN */
+ ) ) {
+ if(canAdjudicate && --moveCount < 0 && appData.trivialDraws)
+ { /* if the first 3 moves do not show a tactical win, declare draw */
+ if(engineOpponent) {
+ SendToProgram("force\n", engineOpponent); // suppress reply
+ SendMoveToProgram(forwardMostMove-1, engineOpponent); /* make sure opponent gets to see move */
+ }
+ ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
+ GameEnds( GameIsDrawn, "Xboard adjudication: Trivial draw", GE_XBOARD );
+ return 1;
+ }
+ } else moveCount = 6;
+ }
+ }
+
+ if (appData.debugMode) { int i;
+ fprintf(debugFP, "repeat test fmm=%d bmm=%d ep=%d, reps=%d\n",
+ forwardMostMove, backwardMostMove, boards[backwardMostMove][EP_STATUS],
+ appData.drawRepeats);
+ for( i=forwardMostMove; i>=backwardMostMove; i-- )
+ fprintf(debugFP, "%d ep=%d\n", i, (signed char)boards[i][EP_STATUS]);
+
+ }
+
+ // Repetition draws and 50-move rule can be applied independently of legality testing
+
+ /* Check for rep-draws */
+ count = 0;
+ for(k = forwardMostMove-2;
+ k>=backwardMostMove && k>=forwardMostMove-100 &&
+ (signed char)boards[k][EP_STATUS] < EP_UNKNOWN &&
+ (signed char)boards[k+2][EP_STATUS] <= EP_NONE && (signed char)boards[k+1][EP_STATUS] <= EP_NONE;
+ k-=2)
+ { int rights=0;
+ if(CompareBoards(boards[k], boards[forwardMostMove])) {
+ /* compare castling rights */
+ if( boards[forwardMostMove][CASTLING][2] != boards[k][CASTLING][2] &&
+ (boards[k][CASTLING][0] != NoRights || boards[k][CASTLING][1] != NoRights) )
+ rights++; /* King lost rights, while rook still had them */
+ if( boards[forwardMostMove][CASTLING][2] != NoRights ) { /* king has rights */
+ if( boards[forwardMostMove][CASTLING][0] != boards[k][CASTLING][0] ||
+ boards[forwardMostMove][CASTLING][1] != boards[k][CASTLING][1] )
+ rights++; /* but at least one rook lost them */
+ }
+ if( boards[forwardMostMove][CASTLING][5] != boards[k][CASTLING][5] &&
+ (boards[k][CASTLING][3] != NoRights || boards[k][CASTLING][4] != NoRights) )
+ rights++;
+ if( boards[forwardMostMove][CASTLING][5] != NoRights ) {
+ if( boards[forwardMostMove][CASTLING][3] != boards[k][CASTLING][3] ||
+ boards[forwardMostMove][CASTLING][4] != boards[k][CASTLING][4] )
+ rights++;
+ }
+ if( canAdjudicate && rights == 0 && ++count > appData.drawRepeats-2
+ && appData.drawRepeats > 1) {
+ /* adjudicate after user-specified nr of repeats */
+ if(engineOpponent) {
+ SendToProgram("force\n", engineOpponent); // suppress reply
+ SendMoveToProgram(forwardMostMove-1, engineOpponent); /* make sure opponent gets to see move */
+ }
+ ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
+ if(gameInfo.variant == VariantXiangqi && appData.testLegality) {
+ // [HGM] xiangqi: check for forbidden perpetuals
+ int m, ourPerpetual = 1, hisPerpetual = 1;
+ for(m=forwardMostMove; m>k; m-=2) {
+ if(MateTest(boards[m], PosFlags(m)) != MT_CHECK)
+ ourPerpetual = 0; // the current mover did not always check
+ if(MateTest(boards[m-1], PosFlags(m-1)) != MT_CHECK)
+ hisPerpetual = 0; // the opponent did not always check
+ }
+ if(appData.debugMode) fprintf(debugFP, "XQ perpetual test, our=%d, his=%d\n",
+ ourPerpetual, hisPerpetual);
+ if(ourPerpetual && !hisPerpetual) { // we are actively checking him: forfeit
+ GameEnds( WhiteOnMove(forwardMostMove) ? WhiteWins : BlackWins,
+ "Xboard adjudication: perpetual checking", GE_XBOARD );
+ return 1;
+ }
+ if(hisPerpetual && !ourPerpetual) // he is checking us, but did not repeat yet
+ break; // (or we would have caught him before). Abort repetition-checking loop.
+ // Now check for perpetual chases
+ if(!ourPerpetual && !hisPerpetual) { // no perpetual check, test for chase
+ hisPerpetual = PerpetualChase(k, forwardMostMove);
+ ourPerpetual = PerpetualChase(k+1, forwardMostMove);
+ if(ourPerpetual && !hisPerpetual) { // we are actively chasing him: forfeit
+ GameEnds( WhiteOnMove(forwardMostMove) ? WhiteWins : BlackWins,
+ "Xboard adjudication: perpetual chasing", GE_XBOARD );
+ return 1;
+ }
+ if(hisPerpetual && !ourPerpetual) // he is chasing us, but did not repeat yet
+ break; // Abort repetition-checking loop.
+ }
+ // if neither of us is checking or chasing all the time, or both are, it is draw
+ }
+ GameEnds( GameIsDrawn, "Xboard adjudication: repetition draw", GE_XBOARD );
+ return 1;
+ }
+ if( rights == 0 && count > 1 ) /* occurred 2 or more times before */
+ boards[forwardMostMove][EP_STATUS] = EP_REP_DRAW;
+ }
+ }
+
+ /* Now we test for 50-move draws. Determine ply count */
+ count = forwardMostMove;
+ /* look for last irreversble move */
+ while( (signed char)boards[count][EP_STATUS] <= EP_NONE && count > backwardMostMove )
+ count--;
+ /* if we hit starting position, add initial plies */
+ if( count == backwardMostMove )
+ count -= initialRulePlies;
+ count = forwardMostMove - count;
+ if( count >= 100)
+ boards[forwardMostMove][EP_STATUS] = EP_RULE_DRAW;
+ /* this is used to judge if draw claims are legal */
+ if(canAdjudicate && appData.ruleMoves > 0 && count >= 2*appData.ruleMoves) {
+ if(engineOpponent) {
+ SendToProgram("force\n", engineOpponent); // suppress reply
+ SendMoveToProgram(forwardMostMove-1, engineOpponent); /* make sure opponent gets to see move */
+ }
+ ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
+ GameEnds( GameIsDrawn, "Xboard adjudication: 50-move rule", GE_XBOARD );
+ return 1;
+ }
+
+ /* if draw offer is pending, treat it as a draw claim
+ * when draw condition present, to allow engines a way to
+ * claim draws before making their move to avoid a race
+ * condition occurring after their move
+ */
+ if(gameMode == TwoMachinesPlay) // for now; figure out how to handle claims in human games
+ if( cps->other->offeredDraw || cps->offeredDraw ) {
+ char *p = NULL;
+ if((signed char)boards[forwardMostMove][EP_STATUS] == EP_RULE_DRAW)
+ p = "Draw claim: 50-move rule";
+ if((signed char)boards[forwardMostMove][EP_STATUS] == EP_REP_DRAW)
+ p = "Draw claim: 3-fold repetition";
+ if((signed char)boards[forwardMostMove][EP_STATUS] == EP_INSUF_DRAW)
+ p = "Draw claim: insufficient mating material";
+ if( p != NULL ) {
+ if(engineOpponent) {
+ SendToProgram("force\n", engineOpponent); // suppress reply
+ SendMoveToProgram(forwardMostMove-1, engineOpponent); /* make sure opponent gets to see move */
+ }
+ ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
+ GameEnds( GameIsDrawn, p, GE_XBOARD );
+ return 1;
+ }
+ }
+
+ if( canAdjudicate && appData.adjudicateDrawMoves > 0 && forwardMostMove > (2*appData.adjudicateDrawMoves) ) {
+ if(engineOpponent) {
+ SendToProgram("force\n", engineOpponent); // suppress reply
+ SendMoveToProgram(forwardMostMove-1, engineOpponent); /* make sure opponent gets to see move */
+ }
+ ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
+ GameEnds( GameIsDrawn, "Xboard adjudication: long game", GE_XBOARD );
+ return 1;
+ }
+ return 0;
+}
+
char *SendMoveToBookUser(int moveNr, ChessProgramState *cps, int initial)
{ // [HGM] book: this routine intercepts moves to simulate book replies
char *bookHit = NULL;
}
}
- if( gameMode == TwoMachinesPlay ) {
- // [HGM] some adjudications useful with buggy engines
- int k, count = 0; static int bare = 1;
- if(gameInfo.holdingsSize == 0 || gameInfo.variant == VariantSuper || gameInfo.variant == VariantGreat) {
-
-
- if( appData.testLegality )
- { /* [HGM] Some more adjudications for obstinate engines */
- int NrWN=0, NrBN=0, NrWB=0, NrBB=0, NrWR=0, NrBR=0,
- NrWQ=0, NrBQ=0, NrW=0, NrK=0, bishopsColor = 0,
- NrPieces=0, NrPawns=0, PawnAdvance=0, i, j;
- static int moveCount = 6;
- ChessMove result;
- char *reason = NULL;
-
- /* Count what is on board. */
- for(i=0; i<BOARD_HEIGHT; i++) for(j=BOARD_LEFT; j<BOARD_RGHT; j++)
- { ChessSquare p = boards[forwardMostMove][i][j];
- int m=i;
-
- switch((int) p)
- { /* count B,N,R and other of each side */
- case WhiteKing:
- case BlackKing:
- NrK++; break; // [HGM] atomic: count Kings
- case WhiteKnight:
- NrWN++; break;
- case WhiteBishop:
- case WhiteFerz: // [HGM] shatranj: kludge to mke it work in shatranj
- bishopsColor |= 1 << ((i^j)&1);
- NrWB++; break;
- case BlackKnight:
- NrBN++; break;
- case BlackBishop:
- case BlackFerz: // [HGM] shatranj: kludge to mke it work in shatranj
- bishopsColor |= 1 << ((i^j)&1);
- NrBB++; break;
- case WhiteRook:
- NrWR++; break;
- case BlackRook:
- NrBR++; break;
- case WhiteQueen:
- NrWQ++; break;
- case BlackQueen:
- NrBQ++; break;
- case EmptySquare:
- break;
- case BlackPawn:
- m = 7-i;
- case WhitePawn:
- PawnAdvance += m; NrPawns++;
- }
- NrPieces += (p != EmptySquare);
- NrW += ((int)p < (int)BlackPawn);
- if(gameInfo.variant == VariantXiangqi &&
- (p == WhiteFerz || p == WhiteAlfil || p == BlackFerz || p == BlackAlfil)) {
- NrPieces--; // [HGM] XQ: do not count purely defensive pieces
- NrW -= ((int)p < (int)BlackPawn);
- }
- }
-
- /* Some material-based adjudications that have to be made before stalemate test */
- if(gameInfo.variant == VariantAtomic && NrK < 2) {
- // [HGM] atomic: stm must have lost his King on previous move, as destroying own K is illegal
- boards[forwardMostMove][EP_STATUS] = EP_CHECKMATE; // make claimable as if stm is checkmated
- if(appData.checkMates) {
- SendMoveToProgram(forwardMostMove-1, cps->other); // make sure opponent gets move
- ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
- GameEnds( WhiteOnMove(forwardMostMove) ? BlackWins : WhiteWins,
- "Xboard adjudication: King destroyed", GE_XBOARD );
- return;
- }
- }
-
- /* Bare King in Shatranj (loses) or Losers (wins) */
- if( NrW == 1 || NrPieces - NrW == 1) {
- if( gameInfo.variant == VariantLosers) { // [HGM] losers: bare King wins (stm must have it first)
- boards[forwardMostMove][EP_STATUS] = EP_WINS; // mark as win, so it becomes claimable
- if(appData.checkMates) {
- SendMoveToProgram(forwardMostMove-1, cps->other); // make sure opponent gets to see move
- ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
- GameEnds( WhiteOnMove(forwardMostMove) ? WhiteWins : BlackWins,
- "Xboard adjudication: Bare king", GE_XBOARD );
- return;
- }
- } else
- if( gameInfo.variant == VariantShatranj && --bare < 0)
- { /* bare King */
- boards[forwardMostMove][EP_STATUS] = EP_WINS; // make claimable as win for stm
- if(appData.checkMates) {
- /* but only adjudicate if adjudication enabled */
- SendMoveToProgram(forwardMostMove-1, cps->other); // make sure opponent gets move
- ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
- GameEnds( NrW > 1 ? WhiteWins : NrPieces - NrW > 1 ? BlackWins : GameIsDrawn,
- "Xboard adjudication: Bare king", GE_XBOARD );
- return;
- }
- }
- } else bare = 1;
-
-
- // don't wait for engine to announce game end if we can judge ourselves
- switch (MateTest(boards[forwardMostMove], PosFlags(forwardMostMove)) ) {
- case MT_CHECK:
- if(gameInfo.variant == Variant3Check) { // [HGM] 3check: when in check, test if 3rd time
- int i, checkCnt = 0; // (should really be done by making nr of checks part of game state)
- for(i=forwardMostMove-2; i>=backwardMostMove; i-=2) {
- if(MateTest(boards[i], PosFlags(i)) == MT_CHECK)
- checkCnt++;
- if(checkCnt >= 2) {
- reason = "Xboard adjudication: 3rd check";
- boards[forwardMostMove][EP_STATUS] = EP_CHECKMATE;
- break;
- }
- }
- }
- case MT_NONE:
- default:
- break;
- case MT_STALEMATE:
- case MT_STAINMATE:
- reason = "Xboard adjudication: Stalemate";
- if((signed char)boards[forwardMostMove][EP_STATUS] != EP_CHECKMATE) { // [HGM] don't touch win through baring or K-capt
- boards[forwardMostMove][EP_STATUS] = EP_STALEMATE; // default result for stalemate is draw
- if(gameInfo.variant == VariantLosers || gameInfo.variant == VariantGiveaway) // [HGM] losers:
- boards[forwardMostMove][EP_STATUS] = EP_WINS; // in these variants stalemated is always a win
- else if(gameInfo.variant == VariantSuicide) // in suicide it depends
- boards[forwardMostMove][EP_STATUS] = NrW == NrPieces-NrW ? EP_STALEMATE :
- ((NrW < NrPieces-NrW) != WhiteOnMove(forwardMostMove) ?
- EP_CHECKMATE : EP_WINS);
- else if(gameInfo.variant == VariantShatranj || gameInfo.variant == VariantXiangqi)
- boards[forwardMostMove][EP_STATUS] = EP_CHECKMATE; // and in these variants being stalemated loses
- }
- break;
- case MT_CHECKMATE:
- reason = "Xboard adjudication: Checkmate";
- boards[forwardMostMove][EP_STATUS] = (gameInfo.variant == VariantLosers ? EP_WINS : EP_CHECKMATE);
- break;
- }
-
- switch(i = (signed char)boards[forwardMostMove][EP_STATUS]) {
- case EP_STALEMATE:
- result = GameIsDrawn; break;
- case EP_CHECKMATE:
- result = WhiteOnMove(forwardMostMove) ? BlackWins : WhiteWins; break;
- case EP_WINS:
- result = WhiteOnMove(forwardMostMove) ? WhiteWins : BlackWins; break;
- default:
- result = (ChessMove) 0;
- }
- if(appData.checkMates && result) { // [HGM] mates: adjudicate finished games if requested
- SendMoveToProgram(forwardMostMove-1, cps->other); /* make sure opponent gets to see move */
- ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
- GameEnds( result, reason, GE_XBOARD );
- return;
- }
-
- /* Next absolutely insufficient mating material. */
- if( NrPieces == 2 || gameInfo.variant != VariantXiangqi &&
- gameInfo.variant != VariantShatranj && // [HGM] baring will remain possible
- (NrPieces == 3 && NrWN+NrBN+NrWB+NrBB == 1 ||
- NrPieces == NrBB+NrWB+2 && bishopsColor != 3)) // [HGM] all Bishops (Ferz!) same color
- { /* KBK, KNK, KK of KBKB with like Bishops */
-
- /* always flag draws, for judging claims */
- boards[forwardMostMove][EP_STATUS] = EP_INSUF_DRAW;
-
- if(appData.materialDraws) {
- /* but only adjudicate them if adjudication enabled */
- SendToProgram("force\n", cps->other); // suppress reply
- SendMoveToProgram(forwardMostMove-1, cps->other); /* make sure opponent gets to see last move */
- ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
- GameEnds( GameIsDrawn, "Xboard adjudication: Insufficient mating material", GE_XBOARD );
- return;
- }
- }
-
- /* Then some trivial draws (only adjudicate, cannot be claimed) */
- if(NrPieces == 4 &&
- ( NrWR == 1 && NrBR == 1 /* KRKR */
- || NrWQ==1 && NrBQ==1 /* KQKQ */
- || NrWN==2 || NrBN==2 /* KNNK */
- || NrWN+NrWB == 1 && NrBN+NrBB == 1 /* KBKN, KBKB, KNKN */
- ) ) {
- if(--moveCount < 0 && appData.trivialDraws)
- { /* if the first 3 moves do not show a tactical win, declare draw */
- SendToProgram("force\n", cps->other); // suppress reply
- SendMoveToProgram(forwardMostMove-1, cps->other); /* make sure opponent gets to see move */
- ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
- GameEnds( GameIsDrawn, "Xboard adjudication: Trivial draw", GE_XBOARD );
- return;
- }
- } else moveCount = 6;
- }
- }
-
- if (appData.debugMode) { int i;
- fprintf(debugFP, "repeat test fmm=%d bmm=%d ep=%d, reps=%d\n",
- forwardMostMove, backwardMostMove, boards[backwardMostMove][EP_STATUS],
- appData.drawRepeats);
- for( i=forwardMostMove; i>=backwardMostMove; i-- )
- fprintf(debugFP, "%d ep=%d\n", i, (signed char)boards[i][EP_STATUS]);
-
- }
-
- /* Check for rep-draws */
- count = 0;
- for(k = forwardMostMove-2;
- k>=backwardMostMove && k>=forwardMostMove-100 &&
- (signed char)boards[k][EP_STATUS] < EP_UNKNOWN &&
- (signed char)boards[k+2][EP_STATUS] <= EP_NONE && (signed char)boards[k+1][EP_STATUS] <= EP_NONE;
- k-=2)
- { int rights=0;
- if(CompareBoards(boards[k], boards[forwardMostMove])) {
- /* compare castling rights */
- if( boards[forwardMostMove][CASTLING][2] != boards[k][CASTLING][2] &&
- (boards[k][CASTLING][0] != NoRights || boards[k][CASTLING][1] != NoRights) )
- rights++; /* King lost rights, while rook still had them */
- if( boards[forwardMostMove][CASTLING][2] != NoRights ) { /* king has rights */
- if( boards[forwardMostMove][CASTLING][0] != boards[k][CASTLING][0] ||
- boards[forwardMostMove][CASTLING][1] != boards[k][CASTLING][1] )
- rights++; /* but at least one rook lost them */
- }
- if( boards[forwardMostMove][CASTLING][5] != boards[k][CASTLING][5] &&
- (boards[k][CASTLING][3] != NoRights || boards[k][CASTLING][4] != NoRights) )
- rights++;
- if( boards[forwardMostMove][CASTLING][5] != NoRights ) {
- if( boards[forwardMostMove][CASTLING][3] != boards[k][CASTLING][3] ||
- boards[forwardMostMove][CASTLING][4] != boards[k][CASTLING][4] )
- rights++;
- }
- if( rights == 0 && ++count > appData.drawRepeats-2
- && appData.drawRepeats > 1) {
- /* adjudicate after user-specified nr of repeats */
- SendToProgram("force\n", cps->other); // suppress reply
- SendMoveToProgram(forwardMostMove-1, cps->other); /* make sure opponent gets to see move */
- ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
- if(gameInfo.variant == VariantXiangqi && appData.testLegality) {
- // [HGM] xiangqi: check for forbidden perpetuals
- int m, ourPerpetual = 1, hisPerpetual = 1;
- for(m=forwardMostMove; m>k; m-=2) {
- if(MateTest(boards[m], PosFlags(m)) != MT_CHECK)
- ourPerpetual = 0; // the current mover did not always check
- if(MateTest(boards[m-1], PosFlags(m-1)) != MT_CHECK)
- hisPerpetual = 0; // the opponent did not always check
- }
- if(appData.debugMode) fprintf(debugFP, "XQ perpetual test, our=%d, his=%d\n",
- ourPerpetual, hisPerpetual);
- if(ourPerpetual && !hisPerpetual) { // we are actively checking him: forfeit
- GameEnds( WhiteOnMove(forwardMostMove) ? WhiteWins : BlackWins,
- "Xboard adjudication: perpetual checking", GE_XBOARD );
- return;
- }
- if(hisPerpetual && !ourPerpetual) // he is checking us, but did not repeat yet
- break; // (or we would have caught him before). Abort repetition-checking loop.
- // Now check for perpetual chases
- if(!ourPerpetual && !hisPerpetual) { // no perpetual check, test for chase
- hisPerpetual = PerpetualChase(k, forwardMostMove);
- ourPerpetual = PerpetualChase(k+1, forwardMostMove);
- if(ourPerpetual && !hisPerpetual) { // we are actively chasing him: forfeit
- GameEnds( WhiteOnMove(forwardMostMove) ? WhiteWins : BlackWins,
- "Xboard adjudication: perpetual chasing", GE_XBOARD );
- return;
- }
- if(hisPerpetual && !ourPerpetual) // he is chasing us, but did not repeat yet
- break; // Abort repetition-checking loop.
- }
- // if neither of us is checking or chasing all the time, or both are, it is draw
- }
- GameEnds( GameIsDrawn, "Xboard adjudication: repetition draw", GE_XBOARD );
- return;
- }
- if( rights == 0 && count > 1 ) /* occurred 2 or more times before */
- boards[forwardMostMove][EP_STATUS] = EP_REP_DRAW;
- }
- }
-
- /* Now we test for 50-move draws. Determine ply count */
- count = forwardMostMove;
- /* look for last irreversble move */
- while( (signed char)boards[count][EP_STATUS] <= EP_NONE && count > backwardMostMove )
- count--;
- /* if we hit starting position, add initial plies */
- if( count == backwardMostMove )
- count -= initialRulePlies;
- count = forwardMostMove - count;
- if( count >= 100)
- boards[forwardMostMove][EP_STATUS] = EP_RULE_DRAW;
- /* this is used to judge if draw claims are legal */
- if(appData.ruleMoves > 0 && count >= 2*appData.ruleMoves) {
- SendToProgram("force\n", cps->other); // suppress reply
- SendMoveToProgram(forwardMostMove-1, cps->other); /* make sure opponent gets to see move */
- ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
- GameEnds( GameIsDrawn, "Xboard adjudication: 50-move rule", GE_XBOARD );
- return;
- }
-
- /* if draw offer is pending, treat it as a draw claim
- * when draw condition present, to allow engines a way to
- * claim draws before making their move to avoid a race
- * condition occurring after their move
- */
- if( cps->other->offeredDraw || cps->offeredDraw ) {
- char *p = NULL;
- if((signed char)boards[forwardMostMove][EP_STATUS] == EP_RULE_DRAW)
- p = "Draw claim: 50-move rule";
- if((signed char)boards[forwardMostMove][EP_STATUS] == EP_REP_DRAW)
- p = "Draw claim: 3-fold repetition";
- if((signed char)boards[forwardMostMove][EP_STATUS] == EP_INSUF_DRAW)
- p = "Draw claim: insufficient mating material";
- if( p != NULL ) {
- SendToProgram("force\n", cps->other); // suppress reply
- SendMoveToProgram(forwardMostMove-1, cps->other); /* make sure opponent gets to see move */
- GameEnds( GameIsDrawn, p, GE_XBOARD );
- ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
- return;
- }
- }
-
-
- if( appData.adjudicateDrawMoves > 0 && forwardMostMove > (2*appData.adjudicateDrawMoves) ) {
- SendToProgram("force\n", cps->other); // suppress reply
- SendMoveToProgram(forwardMostMove-1, cps->other); /* make sure opponent gets to see move */
- ShowMove(fromX, fromY, toX, toY); /*updates currentMove*/
-
- GameEnds( GameIsDrawn, "Xboard adjudication: long game", GE_XBOARD );
-
- return;
- }
- }
+ if(Adjudicate(cps)) return; // [HGM] adjudicate: for all automatic game ends
bookHit = NULL;
if (gameMode == TwoMachinesPlay) {
projects / xboard.git / commitdiff