Ai Sudoku 腦力數讀 (FREE)

Sudoku rules: A: vertical only a 1 to 9 can not be repeated B: The same horizontal 1 to 9 can not be repeated C: This graph is composed of 9 3x3, 3x3 each have 1 to 9 by 1 composed, can not be repeated Features: 1. Categories: Easy,Middle 2. Ranking