9 digits - sudoku variations

Play 4 brain teasing logic games - Sudoku | Killer Sudoku | MathDoku | X-Sudoku - with thousands of puzzles.

Don't get stuck - 9 digits' helpers guide your next move and teach you solution strategies.

• choose levels from beginner to master
• easily enter digits and pencil marks
• get step-by-step hints for your next move
• unique solutions, no guessing needed
• plenty of settings to tweak your game experience
• no ads

9 digits was created by Ivonne & Marcus who love to play logic games.