Sudoku Classic - Number Puzzle

A new Sudoku challenge every day. Build your streak, learn real solving techniques with smart hints, and climb five difficulty levels from Fast to Expert. Plays offline!

A clean, beautifully designed classic Sudoku with five difficulty levels, daily challenges, smart hints that actually teach you, and detailed statistics. No clutter. No account required. Just pure logic — anywhere, anytime, even offline.

CLASSIC SUDOKU, DONE RIGHT Fill every row, column, and 3x3 box with the numbers 1 to 9. Every puzzle has exactly one solution and is solvable with pure logic — no guessing required.

FIVE DIFFICULTY LEVELS From Fast games perfect for a coffee break to Expert grids that demand advanced techniques. Whether you're learning the basics or chasing your fastest Expert time, there's a challenge that fits.

A NEW PUZZLE EVERY DAY Take on the Daily Challenge, build your streak, and track your progress on the calendar. Missed a day? Go back and complete any past challenge.

HINTS THAT TEACH, NOT JUST REVEAL Stuck on a cell? The smart hint system walks you through the solving technique step by step, so you get better with every puzzle. Prefer a quick answer? You can have it placed directly too — your choice.

TOOLS FOR SERIOUS SOLVERS

• Pencil notes and fast notes mode for candidate tracking
• Undo, erase, and auto-complete
• Duplicate and related-cell highlighting
• Mistake tracking with a three-mistake limit
• Pause and resume any time

TRACK YOUR PROGRESS Detailed statistics for every difficulty: best times, win rate, streaks, and scores with bonuses for speed and accuracy. Watch yourself improve.

PLAY ANYWHERE Works fully offline — perfect for flights, commutes, and everywhere in between.

Sudoku is the classic brain training game for puzzle lovers of all skill levels. Download now and sharpen your logic, one grid at a time.