Free · local-first · no sign-up

A calmer way to play Sudoku.

Choose a level, focus on the grid, and come back tomorrow for a new daily challenge. Your progress and statistics stay on this device.

Choose your level

Four certified difficulty bands, from a relaxed first game to a deeper challenge.

More givens and approachable deductions for learning the flow.

A balanced daily workout with fewer obvious placements.

More candidate management and sustained concentration.

Sparser grids intended for experienced Sudoku players.

A deterministic puzzle for each local date. Complete consecutive days to build your streak.

Preview the strategy, candidates, and reason before choosing whether to apply a step.

Build from the rules and candidate notes to pairs, box-line interactions, and X-Wing.

Print four certified grids at a time with a separate answer page and stable puzzle IDs.

No account is required. Progress, preferences, streaks, and best times stay in your browser.