"You have power over your mind, not outside events. Realize this, and you will find strength." — Marcus Aurelius
"You have power over your mind, not outside events. Realize this, and you will find strength." — Marcus Aurelius
On average, a hard Sudoku requires 50–100 candidate eliminations before the grid is fully solved.
On average, a hard Sudoku requires 50–100 candidate eliminations before the grid is fully solved.