Waiting Games: Sudoku

Never a guess

Every puzzle is generated on your phone with exactly one solution, then graded by the logic it truly needs. Even Extreme never needs a guess.

Four difficulties

Easy through Extreme, graded honestly by technique: singles, pairs, wings, fish, and short chains.

Pen and pencil

Pen writes answers, pencil jots candidates. Fill every legal mark in one tap, and auto-clean tidies them as you place digits.

Checks on your terms

Conflicts are flagged from the rules alone, never the solution. When you want the truth, check one square or the whole puzzle.

Two ways to enter

Tap a cell then a digit, or keep a digit selected and paint it across the board. Undo is unlimited, and four board themes keep it easy on the eyes.

Fully Offline

No network calls of any kind. No ads, no accounts, no analytics. Settings, stats, and the saved puzzle live on device and never leave it.