8/18/2019 Cod Sudoku C Part2

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row = row / 3 * 3;

col = col / 3 * 3;

for (i = row; i < row + 3; i++)

for (j = col; j < col + 3; j++)

used |= 1 = 1)

if (!(used & 1) && trycell(x, pos + 1)) return 1;

x[pos] = 0;

return 0;

}

void solve(const char *s)

{

int i, x[81];

for (i = 0; i < 81; i++)

x[i] = s[i] >= '1' && s[i] = '1' && s[i]