//check
void check(){
int t1=0,t2=0,i,j,x1,y1,z1=0,z2=0;
checkm arr[30];
for(i=0;i<=7;i++){
for(j=0;j<=7;j++){
if(board[i][j]==-5){
y1=i;
x1=j;
break;
}
}
}
for(j=0;j<=7;j++){
for(i=0;i<=7;i++){
if (t1==1){
}
if(board[j][i]>=9 && board[j][i]<=16){
flipturn();
t1 = pawn(j,i,y1,x1);flipturn();
//add position of pawn to a list
if(t1==1){
arr[z1].y=j;arr[z1].x=i;arr[z1].piece=board[j][i];z1++;
}
}
else if(board[j][i]==2 || board[j][i]==7){
t1 = horse(j,i,y1,x1);
if(t1==1){
arr[z1].y=j;arr[z1].x=i;arr[z1].piece=board[j][i];z1++;
}
}
else if(board[j][i]==4){
t1 = queen(j,i,y1,x1);
if(t1==1){
arr[z1].y=j;arr[z1].x=i;arr[z1].piece=board[j][i];z1++;
}
}
else if(board[j][i]==1 || board[j][i]==8){
t1 = rook(j,i,y1,x1);
if(t1==1){
arr[z1].y=j;arr[z1].x=i;arr[z1].piece=board[j][i];z1++;
}
}
else if(board[j][i]==3 || board[j][i]==6){
t1 = bishop(j,i,y1,x1);
if(t1==1){
arr[z1].y=j;arr[z1].x=i;arr[z1].piece=board[j][i];z1++;
}
}
}
}
if(z1!=0){
mvwprintw(chessboard,1,25,"Player 1 in CHECK");wrefresh(chessboard);
if(turn!=0)
checkmate(y1,x1,&arr,z1);
else{
mvwprintw(chessboard,2,30," ");wrefresh(chessboard);
}
}
z2=0;
for(i=0;i<=7;i++){
for(j=0;j<=7;j++){
if(board[i][j]==5){
y1=i;
x1=j;
break;
}
}
}
for(j=0;j<=7;j++){
for(i=0;i<=7;i++){
if (t2==1){
}
if(board[j][i]>=(-9) && board[j][i]<=(-16)){
flipturn();
t2 = pawn(j,i,y1,x1);flipturn();
if(t2==1){
arr[z2].y=j;arr[z2].x=i;arr[z2].piece=board[j][i];z2++;
}
}
else if(board[j][i]==(-2) || board[j][i]==(-7)){
t2= horse(j,i,y1,x1);
if(t2==1){
arr[z2].y=j;arr[z2].x=i;arr[z2].piece=board[j][i];z2++;
}
}
else if(board[j][i]==(-4)){
t2 = queen(j,i,y1,x1);
if(t2==1){
arr[z2].y=j;arr[z2].x=i;arr[z2].piece=board[j][i];z2++;
}
}
else if(board[j][i]==(-1) || board[j][i]==(-8)){
t2 = rook(j,i,y1,x1);
if(t2==1){
arr[z2].y=j;arr[z2].x=i;arr[z2].piece=board[j][i];z2++;
}
}
else if(board[j][i]==(-3) || board[j][i]==(-6)){
t2 = bishop(j,i,y1,x1);
if(t2==1){
arr[z2].y=j;arr[z2].x=i;arr[z2].piece=board[j][i];z2++;
}
}
}
}
wrefresh(chessboard);
if(z2!=0){
mvwprintw(chessboard,1,25,"Player 2 in CHECK");wrefresh(chessboard);
if(turn==0)
checkmate(y1,x1,&arr,z2);
else{
mvwprintw(chessboard,2,30," ");wrefresh(chessboard);
}
}
if(z1==0&&z2==0)
mvwprintw(chessboard,2,25," ");wrefresh(chessboard);
}
int friendlymove(int row,int col){
int t2,t1,j,i;
if(turn!=0){
for(j=0;j<=7;j++){
for(i=0;i<=7;i++){
if (t2==1){
break;
}
if(board[j][i]>=(-9) && board[j][i]<=(-16)){
flipturn();
t2 = pawn(j,i,row,col);
flipturn();
}
else if(board[j][i]==(-2) || board[j][i]==(-7)){
t2= horse(j,i,row,col);
}
else if(board[j][i]==(-4)){
t2 = queen(j,i,row,col);
}
else if(board[j][i]==(-1) || board[j][i]==(-8))
t2 = rook(j,i,row,col);
else if(board[j][i]==(-3) || board[j][i]==(-6)){
t2 = bishop(j,i,row,col);
}
}
}
if(t2==1)
return 1;
else
return 0;
}
if(turn==0){
for(j=0;j<=7;j++){
for(i=0;i<=7;i++){
if (t2==1){
break;
}
if(board[j][i]>=(9) && board[j][i]<=(16)){
flipturn();
t2 = pawn(j,i,row,col);
flipturn();
}
else if(board[j][i]==(2) || board[j][i]==(7))
t2= horse(j,i,row,col);
else if(board[j][i]==(4)){
t2 = queen(j,i,row,col);
}
else if(board[j][i]==(1) || board[j][i]==(8))
t2 = rook(j,i,row,col);
else if(board[j][i]==(3) || board[j][i]==(6)){
t2 = bishop(j,i,row,col);
}
}
}
if(t2==1)
return 1;
else
return 0;
}
}
bool whiteCheck() {
int x, y;
for (x = 0; x < 8; x++) {
for (y = 0; y < 8; y++)
if (table[x][y] == 'K')
break;
if (table[x][y] == 'K')
break;
}
int i, j;
for (i = 0; i < 8; i++)
for (j = 0; j < 8; j++)
if (table[i][j] == 'p' && blackPawn(i, j, x, y))
return true;
else if (table[i][j] == 'n' && knight(i, j, x, y))
return true;
else if (table[i][j] == 'b' && bishop(i, j, x, y))
return true;
else if (table[i][j] == 'r' && rook(i, j, x, y))
return true;
else if (table[i][j] == 'q' && queen(i, j, x, y))
return true;
else if (table[i][j] == 'k' && king(i, j, x, y))
return true;
return false;
}
bool blackCheck() {
int x, y;
for (x = 0; x < 8; x++) {
for (y = 0; y < 8; y++)
if (table[x][y] == 'k')
break;
if (table[x][y] == 'k')
break;
}
int i, j;
for (i = 0; i < 8; i++)
for (j = 0; j < 8; j++)
if (table[i][j] == 'P' && whitePawn(i, j, x, y))
return true;
else if (table[i][j] == 'N' && knight(i, j, x, y))
return true;
else if (table[i][j] == 'B' && bishop(i, j, x, y))
return true;
else if (table[i][j] == 'R' && rook(i, j, x, y))
return true;
else if (table[i][j] == 'Q' && queen(i, j, x, y))
return true;
else if (table[i][j] == 'K' && king(i, j, x, y))
return true;
return false;
}
// Parses Donna chess format string for one side. Besides [K]ing, [Q]ueen, [R]ook,
// [B]ishop, and k[N]ight the following pseudo pieces could be specified:
//
// [M]ove: specifies the right to move along with the optional move number.
// For example, "M42" for Black means the Black is making 42nd move.
// Default value is "M1" for White.
//
// [C]astle: specifies castle right squares. For example, "Cg1" and "Cc8" encode
// allowed kingside castle for White, and queenside castle for Black.
// By default all castles are allowed, i.e. defult value is "Cc1,Cg1"
// for White and "Cc8,Cg8" for Black. The actual castle rights are
// checked during position setup to make sure they do not violate
// chess rules. If castle rights are specified incorrectly they get
// quietly ignored.
//
// [E]npassant: specifies en-passant square if any. For example, "Ed3" marks D3
// square as en-passant. Default value is no en-passant.
//
//------------------------------------------------------------------------------
Position *setup_side(Position *self, char *side, uint8 color) {
char *buffer = (char *)calloc(strlen(side) + 1, 1); // strdup() the string so we could tokenize it.
strcat(buffer, side);
char *move = strtok(buffer, ",");
while(move) {
if (move[0] == 'M') { // TODO: parse move number.
self->color = color;
} else {
int sq, size = strlen(move);
assert(size == 2 || size == 3); // Don't panic.
if (size == 2) { // Pawn, ex. "e4".
sq = square(move[1] - '1', move[0] - 'a');
} else { // Piece, ex. "Qd1".
sq = square(move[2] - '1', move[1] - 'a');
}
switch(move[0]) {
case 'K':
self->pieces[sq] = king(color);
break;
case 'Q':
self->pieces[sq] = queen(color);
break;
case 'R':
self->pieces[sq] = rook(color);
break;
case 'B':
self->pieces[sq] = bishop(color);
break;
case 'N':
self->pieces[sq] = knight(color);
break;
case 'E':
self->enpassant = (uint8)sq;
break;
case 'C':
if (sq == C1 + (int)color || sq == C8 + (int)color) {
self->castles |= castleQueenside[color];
} else if (sq == G1 + (int)color || sq == G8 + (int)color) {
self->castles |= castleKingside[color];
}
break;
default:
// When everything else fails, read the instructions.
self->pieces[sq] = pawn(color);
}
}
move = strtok(NULL, ","); // <-- Get next move token.
}
free(buffer);
return self;
}
void coins() // draw coins
{ for(int i=0;i<8;i++)
for(int j=0;j<8;j++)
{ if(A[i][j].coin=='R')
rook(A[i][j].x,A[i][j].y,A[i][j].color);
if(A[i][j].coin=='H')
knight(A[i][j].x,A[i][j].y,A[i][j].color);
if(A[i][j].coin=='B')
bishop(A[i][j].x,A[i][j].y,A[i][j].color);
if(A[i][j].coin=='K')
king(A[i][j].x,A[i][j].y,A[i][j].color);
if(A[i][j].coin=='Q')
queen(A[i][j].x,A[i][j].y,A[i][j].color);
if(A[i][j].coin=='P')
pawn(A[i][j].x,A[i][j].y,A[i][j].color); }}
//------------------------------------------------------------------------------
Score threats(uint8 color, Bitmask hisAttacks, Bitmask herAttacks) {
Score score = {};
Position *p = eval.position;
// Find weak enemy pieces: the ones under attack and not defended by
// pawns (excluding a king).
Bitmask weak = p->outposts[color^1] & hisAttacks & ~eval.attacks[pawn(color^1)];
weak &= ~p->outposts[king(color^1)];
if (weak) {
// Threat bonus for strongest enemy piece attacked by our pawns,
// knights, or bishops.
Bitmask targets = weak & (eval.attacks[pawn(color)] | eval.attacks[knight(color)] | eval.attacks[bishop(color)]);
if (targets) {
Piece piece = strongest_piece(p, color^1, targets);
score = add(score, bonusMinorThreat[kind(piece) / 2]);
}
// Threat bonus for strongest enemy piece attacked by our rooks
// or queen.
targets = weak & (eval.attacks[rook(color)] | eval.attacks[queen(color)]);
if (targets) {
Piece piece = strongest_piece(p, color^1, targets);
score = add(score, bonusMajorThreat[kind(piece) / 2]);
}
// Extra bonus when attacking enemy pieces that are hanging. Side
// having the right to move gets bigger bonus.
int hanging = count(weak & ~herAttacks);
if (hanging > 0) {
if (p->color == color) {
hanging++;
}
score = add(score, times(hangingAttack, hanging));
}
}
return score;
}
bool queen(int i, int j, int x, int y) {
return rook(i, j, x, y) || bishop(i, j, x, y);
}
void main()
{
int gdriver = DETECT, gmode;
initgraph(&gdriver, &gmode, "\\tc\\bgi");
cleardevice();
// char str[1]; str[1]='\0';
file.open("Info.TXT",ios::in|ios::binary);
if(!file)
cout<<"File couldnt be opened";
x=20; y=getmaxy()-70;
settextstyle(2,0,5);
setvalues();
board();
coins();
getch();
typeon();
getch();
cleardevice();
x=20; y=200;
pic("ch pic");
typeon();
y+=20;
typeon();
getch();
cleardevice();
pic("ch pic2");
x=20; y=200;
typeon();
getch();
cleardevice();
king(getmaxx()/2-30,30,1);
x=20; y=100;
typeon();
getch();
cleardevice();
rook(getmaxx()/2-30,30,1);
x=20; y=100;
typeon();
getch();
cleardevice();
bishop(getmaxx()/2-30,30,1);
x=20; y=100;
typeon();
getch();
cleardevice();
queen(getmaxx()/2-30,30,1);
x=20; y=100;
typeon();
getch();
cleardevice();
knight(getmaxx()/2-30,30,1);
x=20; y=100;
typeon();
getch();
cleardevice();
pawn(getmaxx()/2-30,30,1);
x=20; y=100;
typeon();
getch();
cleardevice();
pic("ch pic3");
x=20; y=50;
typeon();
getch();
file.close();
closegraph();
}
/*check where the king can move
if the king can move to a place will he be in check?
if yes continue to check other conditions
else no checkmate*/
int checkmate(int row,int col,checkm arr[],int q)
{
int ccount,valid,i,j,x,y,z,t=0,possible=0,n=0;
y=row-1;
x=col-1;
while(x<0){
x++;
}
while(y<0)
y++;
if(turn!=0){
while((y<=row+1)&&(x<=col+1)){
valid=king(row,col,y,x);
if((turn!=0)&&board[y][x]<0 || (x==8 || y==8)){
valid=0;
wprintw(menuwin," invalid turn 1");wrefresh(menuwin);
}
if(valid){
t=0;
for(j=0;j<=7;j++){
for(i=0;i<=7;i++){
if(t==1){
break;
}
if(board[j][i]>=9 && board[j][i]<=16)
t = pawn(j,i,y,x);
else if(board[j][i]==2 || board[j][i]==7)
t = horse(j,i,y,x);
else if(board[j][i]==4)
t = queen(j,i,y,x);
else if(board[j][i]==1 || board[j][i]==8)
t = rook(j,i,y,x);
else if(board[j][i]==3 || board[j][i]==6)
t = bishop(j,i,y,x);
}
}
if(t==1){
ccount++;
}
else if(t==0){
possible++;
}
}
else{
ccount++;
}
if(y==row+1){
x++;
}
if(y<row+1){
y++;
}
}
if(possible!=0){
return;
}
for(z=0;z<q;z++)
{ x=arr[z].x;y=arr[z].y;
switch(abs(arr[z].piece))
{
case 9:case 10:case 11:case 12:case 13:case 14:case 15:case 16:break;
case 4:if(arr[z].y-row==arr[z].x-col)
goto c3;
//go to bishop case
if(arr[z].y==row||arr[z].x==col)
//go to rook case
case 1:case 8://rook
if(row==arr[z].y) {
for(i=arr[z].x+1;i<col;i++) {
if(board[row][i]==0) {
if(friendlymove(row,i)){
possible++;goto end;}
}
}
for(i=arr[z].x-1;i>col;i--) {
if(board[row][i]==0) {
if(friendlymove(row,i)){
possible++;goto end;}
}
}
}
else if(col==arr[x].x) {
for(i=arr[z].y+1;i<row;i++) {
if(board[i][col]==0) {
if(friendlymove(i,col)){
possible++;goto end;}
}
}
for(i=arr[z].y-1;i>col;i--) {
if(board[i][col]==0) {
if(friendlymove(i,col)){
possible++;goto end;}
}
}
}
break;
//generate mid way blocks and check if friendly piece can move in
case 2:case 7://horse
c3:case 3:case 6: //bishop
if((x<col)&&(y<row)) {
for(i=1;(i+x)<col;i++) {
if(board[y+i][x+i]==0) {
if(friendlymove(y+i,x+i)){
possible++;goto end;}
}
}
}
else if((x>col)&&(y>row)){
for(i=1;(x-i)>col;i++){
if(board[y-i][x-i]==0)
if(friendlymove(y-i,x-i)){
possible++;goto end;}
}
}
else if((x>col)&&(y<row)){
for(i=1;(x-i)>col;i++){
if(board[y+i][x-i]==0)
if(friendlymove(y+i,x-i)){
possible++;goto end;}
}
}
else if((x<col)&&(y>row)){
for(i=1;(y-i)>row;i++){
if(board[y-i][x+i]==0)
if(friendlymove(y-i,x+i)){
possible++;goto end;}
}
}
break;
}
}
end:if(possible==0){
mvwprintw(chessboard,2,30," player 1 CHECKMATE");wrefresh(chessboard);
}
else{
mvwprintw(chessboard,2,30," ");wrefresh(chessboard);
}
}
else if(turn==0){
while((y<=row+1)&&(x<=col+1)){
valid=king(row,col,y,x);
if((turn==0)&&board[y][x]>0){
valid=0;
}
if(valid){
t=0;
for(j=0;j<=7;j++){
for(i=0;i<=7;i++){
if(t==1)
break;
if(board[j][i]>=-9 && board[j][i]<=-16)
t = pawn(j,i,y,x);
else if(board[j][i]==-2 || board[j][i]==-7)
t = horse(j,i,y,x);
else if(board[j][i]==-4)
t = queen(j,i,y,x);
else if(board[j][i]==-1 || board[j][i]==-8)
t = rook(j,i,y,x);
else if(board[j][i]==-3 || board[j][i]==-6)
t = bishop(j,i,y,x);
}
}
if(t==1){
ccount++;
}
else if(t==0) {
possible++;
}
}
else {
ccount++;
}
if(y==row+1){
x++;
}
if(y<row+1){
y++;
}
}
if(possible!=0)
return;
for(z=0;z<=q;z++)
{ x=arr[z].x;y=arr[z].y;
switch(arr[z].piece)
{
case -9:case -10:case -11:case -12:case -13:case -14:case -15:case -16:break;
case -4:if(arr[z].y-row==arr[z].x-col)
goto c4;
//go to bishop case
if(arr[z].y==row||arr[z].x==col)
//go to rook case
case -1:case -8://rook
if(row==arr[z].y) {
for(i=arr[z].x+1;i<col;i++){
if(board[row][i]==0){
if(friendlymove(row,i)){
possible++;goto end;}
}
}
for(i=arr[z].x-1;i>col;i--) {
if(board[row][i]==0) {
if(friendlymove(row,i)){
possible++;goto end;}
}
}
}
else if(col==arr[x].x) {
for(i=arr[z].y+1;i<row;i++) {
if(board[i][col]==0) {
if(friendlymove(i,col)){
possible++;goto end;}
}
}
for(i=arr[z].y-1;i>col;i--) {
if(board[i][col]==0) {
if(friendlymove(i,col)){
possible++;goto end;}
}
}
}
break;
//generate mid way blocks and check if friendly piece can move in
case -2:case -7://horse
c4:case -3:case -6: //bishop
if((x<col)&&(y<row)) {
for(i=1;(i+x)<col;i++) {
if(board[y+i][x+i]==0) {
if(friendlymove(y+i,x+i)){
possible++;goto end2;}
}
}
}
else if((x>col)&&(y>row)){
for(i=1;(x-i)>col;i++){
if(board[y-i][x-i]==0)
if(friendlymove(y-i,x-i)){
possible++;goto end2;}
}
}
else if((x>col)&&(y<row)){
for(i=1;(x-i)>col;i++){
if(board[y+i][x-i]==0)
if(friendlymove(y+i,x-i)){
possible++;goto end2;}
}
}
else if((x<col)&&(y>row)){
for(i=1;(y-i)>row;i++){
if(board[y-i][x+i]==0)
if(friendlymove(y-i,x+i)){
possible++;goto end2;}
}
}
break;
}
}
end2:if(possible==0){
mvwprintw(chessboard,2,30," player 2 CHECKMATE");wrefresh(chessboard);
}
else{
mvwprintw(chessboard,2,30," ");wrefresh(chessboard);
}
}
}
//during the game
//when u get the coordinates of the click
void game(int x, int y){
MEVENT ev;
bpos *m;
bool a;
m=malloc(sizeof(bpos));
int b,c,fx,fy;
if(board[x][y]==0) {
wrongstart();
}
else {
if(turn==0) {
if(board[x][y]<0) {
wrongstart();
}
}
else if(turn!=0){
if(board[x][y]>0){
wrongstart();
}
}
}
//then the user should click in the final position and we need to find the corresponding box
c = wgetch(chessboard);
c = wgetch(chessboard);
wrefresh(menuwin);
switch(c)
{
case KEY_MOUSE:
if(getmouse(&ev) == OK){
if(ev.bstate & BUTTON1_PRESSED){
fy=ev.y;fx=ev.x;
m=position(fx,fy);
fy=m->col;
fx=m->row;
if(!((m->row+1)*(m->col+1))){
mvwprintw(menuwin,10,10,"not valid click again ");
wrefresh(menuwin);return;
}
if((turn==0)&&(board[fx][fy]<0)){
mvwprintw(menuwin,2,6,"choose num 2 ");
}
else if((turn!=0)&&(board[fx][fy]>0)){
mvwprintw(menuwin,2,6,"choose num1");
}
wrefresh(menuwin);
switch(abs(board[x][y])) {
case 9:case 10:case 11:case 12:case 13:case 14:case 15:case 16:
b=pawn(x,y,fx,fy);
break;
case 2: case 7: b=horse(x,y,fx,fy);
break;
case 4: b=queen(x,y,fx,fy);
break;
case 3:case 6:b=bishop(x,y,fx,fy);
break;
case 1:case 8: b=rook(x,y,fx,fy);
break;
case 5: b=king(x,y,fx,fy);
break;
}
if(b==1){
if((turn==0)&&board[x][y]<0)
{return;}
else if((turn!=0)&&board[x][y]>0)
{return;}
if((turn==0)&&board[fx][fy]>0)
{return;}
else if((turn!=0)&&board[fx][fy]<0)
{return;}
if((board[fx][fy]>0)&&(turn!=0)){
karr[count]=board[fx][fy];count++;printelement();
}
else if((board[fx][fy]<0)&&(turn==0)){
karr[count]=board[fx][fy];count++;printelement();
}
wrefresh(menuwin);move1.prevval=board[fx][fy];
move1.newval=board[x][y];
movepiece(x,y,fx,fy);wrefresh(menuwin);
move1.srow=x;move1.scol=y;move1.erow=fx;move1.ecol=fy;
push(&s,move1);
flipturn();check();
display_menu();
}
}
}
}
}
int main(void){
int i, j;
int game;
char board[BOARD_SIZE][BOARD_SIZE+1];
char white[BOARD_SIZE+2+2][BOARD_SIZE+2+2];
char black[BOARD_SIZE+2+2][BOARD_SIZE+2+2];
char *pboard[BOARD_SIZE];
char *pblack[BOARD_SIZE+4];
char *pwhite[BOARD_SIZE+4];
int bk_row;
int bk_col;
int wk_row;
int wk_col;
#ifdef _DEBUG_
FILE *f;
f = fopen("in.txt", "r");
#endif
for(i=0; i<BOARD_SIZE; i++){
#ifdef _DEBUG_
fscanf(f, "%s", &board[i][0]);
#else
scanf("%s", &board[i][0]);
#endif
}
for(i=0; i<BOARD_SIZE; i++)pboard[i] = &board[i][0];
for(i=0; i<BOARD_SIZE+4; i++){
pwhite[i] = &white[i][0];
pblack[i] = &black[i][0];
}
game = 0;
while(boardIsNotEmpty(&board[0][0])){
game++;
memset(white, 0, sizeof(white));
memset(black, 0, sizeof(black));
for(i=0; i<BOARD_SIZE; i++){
for(j=0; j<BOARD_SIZE; j++){
if(board[i][j] == 'k'){
bk_row = i;
bk_col = j;
}
if(board[i][j] == 'K'){
wk_row = i;
wk_col = j;
}
}
}
for(i=0; i<BOARD_SIZE; i++){
for(j=0; j<BOARD_SIZE; j++){
switch(board[i][j]){
case('k'): king(pboard, i, j, pblack, BOARD_SIZE, 'K');
break;
case('K'): king(pboard, i, j, pblack, BOARD_SIZE, 'k');
break;
case('p'): black[2+i+1][2+j-1]++;
black[2+i+1][2+j+1]++;
break;
case('P'): white[2+i-1][2+j-1]++;
white[2+i-1][2+j+1]++;
break;
case('r'): rook(pboard, i, j, pblack, BOARD_SIZE, 'K');
break;
case('R'): rook(pboard, i, j, pwhite, BOARD_SIZE, 'k');
break;
case('b'): bishop(pboard, i, j, pblack, BOARD_SIZE, 'K');
break;
case('B'): bishop(pboard, i, j, pwhite, BOARD_SIZE, 'k');
break;
case('q'): rook(pboard, i, j, pblack, BOARD_SIZE, 'K');
bishop(pboard, i, j, pblack, BOARD_SIZE, 'K');
break;
case('Q'): rook(pboard, i, j, pwhite, BOARD_SIZE, 'k');
bishop(pboard, i, j, pwhite, BOARD_SIZE, 'k');
break;
case('n'): knight(i, j, pblack);
break;
case('N'): knight(i, j, pwhite);
break;
default: break;
}
}
}
#ifdef _DEBUG_
printf("---------------------\n");
printf("bk: %d %d wk: %d %d\n", bk_row, bk_col, wk_row, wk_col);
for(i=0; i<BOARD_SIZE; i++){
for(j=0; j<BOARD_SIZE; j++){
printf("%01d", white[2+i][2+j]);
}
printf(" ");
for(j=0; j<BOARD_SIZE; j++){
printf("%01d", black[2+i][2+j]);
}
printf(" ");
for(j=0; j<BOARD_SIZE; j++){
printf("%c", board[i][j]);
}
printf("\n");
}
printf("---------------------\n");
#endif
if((white[2+bk_row][2+bk_col]==0)&&(black[2+wk_row][2+wk_col]==0)){
printf("Game #%d: no king is in check.\n", game);
}
if(white[2+bk_row][2+bk_col] != 0){
printf("Game #%d: black king is in check.\n", game);
}
if(black[2+wk_row][2+wk_col] != 0){
printf("Game #%d: white king is in check.\n", game);
}
for(i=0; i<BOARD_SIZE; i++){
#ifdef _DEBUG_
fscanf(f, "%s", &board[i][0]);
#else
scanf("%s", &board[i][0]);
#endif
}
}
return 0;
}
// Decodes a string in long algebraic notation and returns a move. If the
// notation is not recognized the move is returned as (Move)0.
//------------------------------------------------------------------------------
Move new_move_from_string(Position *self, char *e2e4) {
bool queen_side_castle = !strcmp(e2e4, "0-0-0");
bool king_side_castle = !strcmp(e2e4, "0-0") && !queen_side_castle;
if (king_side_castle || queen_side_castle) {
bool king_side_ok = false, queen_side_ok = false;
can_castle(self, self->color, &king_side_ok, &queen_side_ok);
if (king_side_castle && king_side_ok) {
int from = self->king[self->color];
int to = G1 + self->color * A8;
return validate(self, new_castle(self, from, to));
}
if (queen_side_castle && queen_side_ok) {
int from = self->king[self->color];
int to = C1 + self->color * A8;
return validate(self, new_castle(self, from, to));
}
return (Move)0;
}
char notation[strlen(e2e4)];
char *src = e2e4, *dst = notation;
// Strip all optional characters.
while (*src) {
if (strchr("KkQqRrBbNn12345678acdefgh", *src)) {
*dst++ = *src;
}
src++;
}
*dst = '\0';
if (strlen(notation) >= 4 && strlen(notation) <= 5) {
// Validate optional piece character to make sure the actual piece it
// represents is there.
Piece piece = pawn(self->color);
switch (notation[0]) {
case 'K':
piece = king(self->color);
break;
case 'Q':
piece = queen(self->color);
break;
case 'R':
piece = rook(self->color);
break;
case 'B':
piece = bishop(self->color);
break;
case 'N':
piece = knight(self->color);
}
int sq;
if (is_pawn(piece)) {
sq = square(notation[1] - '1', notation[0] - 'a');
} else {
sq = square(notation[2] - '1', notation[1] - 'a');
}
if (sq >= A1 && sq <= H8) {
if (self->pieces[sq] == piece) {
return validate(self, new_move_from_notation(self, is_pawn(piece) ? notation : notation + 1));
}
}
}
return (Move)0;
}
// Non-capturing checks.
//------------------------------------------------------------------------------
MoveGen *generate_checks(MoveGen *self) {
Position *p = self->p;
int color = p->color, enemy = p->color ^ 1;
int square = (int)p->king[enemy];
// Non-capturing Knight checks.
Bitmask prohibit = maskNone;
Bitmask checks = knightMoves[square];
Bitmask outposts = p->outposts[knight(color)];
while (any(outposts)) {
int from = pop(&outposts);
add_piece_move(self, from, knightMoves[from] & checks & ~p->board);
}
// Non-capturing Bishop or Queen checks.
checks = targets_for(p, square, bishop(enemy));
outposts = p->outposts[bishop(color)] | p->outposts[queen(color)];
while (any(outposts)) {
int from = pop(&outposts);
Bitmask squares = targets_for(p, from, bishop(enemy)) & checks & ~p->outposts[enemy];
while (any(squares)) {
int to = pop(&squares);
Piece piece = p->pieces[to];
if (!piece) {
// Empty square: simply move a bishop to check.
append(self, new_move(p, from, to));
} else if (color(piece) == color && any(maskDiagonal[from][square])) {
// Non-empty square occupied by friendly piece on the same
// diagonal: moving the piece away causes discovered check.
switch (kind(piece)) {
case Pawn:
// Block pawn promotions (since they are treated as
// captures) and en-passant captures.
prohibit = maskRank[0] | maskRank[7];
if (p->enpassant) {
prohibit |= bit[p->enpassant];
}
add_pawn_move(self, to, targets(p, to) & ~p->board & ~prohibit);
break;
case King:
// Make sure the king steps out of attack diaginal.
add_king_move(self, to, targets(p, to) & ~p->board & ~maskBlock[from][square]);
break;
default:
add_piece_move(self, to, targets(p, to) & ~p->board);
}
}
}
if (is_queen(p->pieces[from])) {
// Queen could move straight as a rook and check diagonally as a bishop
// or move diagonally as a bishop and check straight as a rook.
Bitmask squares = (targets_for(p, from, rook(color)) & checks) |
(targets_for(p, from, bishop(color)) & targets_for(p, square, rook(color)));
add_piece_move(self, from, squares & ~p->board);
}
}
// Non-capturing Rook or Queen checks.
checks = targets_for(p, square, rook(enemy));
outposts = p->outposts[rook(color)] | p->outposts[queen(color)];
while (any(outposts)) {
int from = pop(&outposts);
Bitmask squares = targets_for(p, from, rook(enemy)) & checks & ~p->outposts[enemy];
while (any(squares)) {
int to = pop(&squares);
Piece piece = p->pieces[to];
if (!piece) {
// Empty square: simply move a rook to check.
append(self, new_move(p, from, to));
} else if (color(piece) == color) {
if (any(maskStraight[from][square])) {
// Non-empty square occupied by friendly piece on the same
// file or rank: moving the piece away causes discovered check.
switch (kind(piece)) {
case Pawn:
// If pawn and rook share the same file then non-capturing
// discovered check is not possible since the pawn is going
// to stay on the same file no matter what.
if (col(from) == col(to)) {
continue;
}
// Block pawn promotions (since they are treated as captures)
// and en-passant captures.
prohibit = maskRank[0] | maskRank[7];
if (p->enpassant) {
prohibit |= bit[p->enpassant];
}
add_pawn_move(self, to, targets(p, to) & ~p->board & ~prohibit);
break;
case King:
// Make sure the king steps out of attack file or rank.
prohibit = maskNone;
if (row(from) == row(square)) {
prohibit = maskRank[row(from)];
} else {
prohibit = maskFile[col(square)];
}
add_king_move(self, to, targets(p, to) & ~p->board & ~prohibit);
break;
default:
add_piece_move(self, to, targets(p, to) & ~p->board);
}
}
}
}
}
// Non-capturing Pawn checks.
outposts = p->outposts[pawn(color)] & maskIsolated[col(square)];
while (any(outposts)) {
int from = pop(&outposts);
Bitmask target = maskPawn[color][square] & targets(p, from);
if (any(target)) {
append(self, new_pawn_move(p, from, pop(&target)));
}
}
return self;
}