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Initial release of Calm Sudoku.
Classic sudoku: big numbers, no timer, no penalties. Logic only, no guessing.
Calm Sudoku is the classic 9×9 number puzzle, laid out the way a good puzzle book is: clear, generous and unhurried. LARGE AND EASY TO READ • The grid fills the width of your screen, with big, sharp numbers • Printed clues in black, your own numbers in blue, so you always know which is which • A large number pad with keys that are easy to hit, even on a small phone • Your row, column and box light up softly when you pick a square • Follows your phone's text size setting AT YOUR OWN PACE • No clock on screen unless you turn it on • No "three mistakes and you're out": a wrong number never ends the game • Show or hide mistakes; your choice • Undo as often as you like • Every move is saved, so you can stop and continue later PUZZLES YOU CAN TRUST • Every puzzle has exactly one answer • Every puzzle can be solved by reasoning alone, with no guessing • Easy, Medium and Hard, each checked against the solving methods of its level • A new Daily puzzle every day, the same for everyone HELPFUL, NOT PUSHY • Pencil notes for keeping track of possibilities, cleared for you when a number is placed • One free hint per puzzle that explains itself ("Only 4 fits in this cell") • More hints available by watching a short video, only when you ask for one PLAY ANYWHERE • No internet connection needed to play • No account, no sign-in, no personal details • Small download Calm Sudoku is free and supported by ads. We keep them away from the number pad and never show a full-screen ad in the middle of a puzzle.