Sudoku Apex — Free Online Sudoku Puzzles & Daily Challenge
Play free online Sudoku on Sudoku Apex. Designed for pure focus with zero distractions, custom Light, Warm, and Dark themes, and intelligent step-by-step hints that teach real Sudoku logic.
Difficulty Levels
- Daily Challenge: A new hand-picked Sudoku puzzle every day.
- Easy, Medium & Hard: Classic logical Sudoku puzzles for daily brain training.
- Expert, Master & Grandmaster: Advanced puzzles requiring Naked/Hidden Pairs, Pointing Pairs, Box-Line Reduction, X-Wing, XY-Wing, and Swordfish techniques.