{{{~cpp #include using namespace std; const int Max = 8; int check, cnt; int ar[Max][Max]; void block(int, int); void find(int, int); void main() { int i, j, k; int cnt = 0; for (i = 0; i < Max; i++) { for (j = 0; j < Max; j++) for (k = 0; k < Max; k++) ar[j][k] = -1; check = 0; find(0, i); } } void block(int row, int col) { int crow, ccol; int i; for (i = row + 1; i < Max; i++) ar[i][col] = 0; crow = row; ccol = col; while (++crow < Max && --ccol >= 0) ar[crow][ccol] = 0; crow = row; ccol = col; while (++crow < Max && ++ccol < Max) ar[crow][ccol] = 0; } void find(int row, int col) { int i, j, k; int temp[Max][Max]; int tcheck; if (ar[row][col] == 0) return; else { ar[row][col] = 1; block(row, col); check++; if (check == Max) { cout << ++cnt << " : "; for (j = 0; j < Max; j++) for (k = 0; k < Max; k++) if (ar[j][k] == 1) cout << k + 1 << " "; cout << endl; if (cnt % 24 == 0) cin.get(); return; } for (i = 0; i < Max; i++) { for (j = 0; j < Max; j++) for (k = 0; k < Max; k++) temp[j][k] = ar[j][k]; tcheck = check; find(row + 1, i); for (j = 0; j < Max; j++) for (k = 0; k < Max; k++) ar[j][k] = temp[j][k]; check = tcheck; } } } }}} ---- [EightQueenProblem]