Solve puzzles with 6 difficulty levels from Beginner to Master. Use smart hints to guide logical steps. Track progress and replay puzzles. Customize settings for difficulty and hint frequency. Share completed puzzles via social media.
Play a turn-based game by placing "○" or "×" alternately. Win by getting three in a row vertically, horizontally, or diagonally. Draw if all spaces are filled without a winner.
Solve puzzles with a 9x9 grid and 3x3 sub grids. Enter numbers 1 through 9 in each cell. Complete puzzles using logic without guessing. Access unlimited puzzles. Track progress across multiple difficulty levels.
Find and identify the single different character among a set of汉字 within 30 seconds. View top 10 high scores and compare with past records. Compete with global players via GameCenter. Review unsolved questions after the game.
