Sudoku

Sudoku with everything that matters and nothing that doesn't.

A clean board, five real difficulty levels, and a fresh puzzle every day. Every
puzzle is generated with exactly one solution and verified before you see it, so
a careful solve always gets you home — you will never have to guess.

PLAY YOUR WAY
• Five difficulties: Easy, Medium, Hard, Expert and Master
• Unlimited puzzles, generated fresh — you will never replay the same grid
• Fully offline. No account, no sign-up, no waiting on a connection
• Your game is saved the moment you leave, mid-puzzle and all

TOOLS THAT STAY OUT OF THE WAY
• Pencil notes with one tap, or let auto-notes do the bookkeeping
• Unlimited undo, all the way back to your first move
• Two free hints per puzzle when you are genuinely stuck
• Optional mistake limit — switch it off for a pure, untimed solve
• Highlighting for the row, column, box and every matching number, each
toggleable if you would rather solve unaided

A PUZZLE EVERY DAY
• One new daily challenge, the same grid for everybody
• Build a daily streak — and protect it with streak freezes

TRACK EVERY SOLVE
• Wins, best times and averages, broken out per difficulty
• Ten achievements, from your first win to a flawless Master solve
• Optional Google Play Games sign-in keeps achievements with your account