Sudoku
Classic 9×9 Sudoku with five difficulty levels, five hand-crafted visual themes, pencil-mark notes, and a hint system that counts every hint you use. Works offline, no account needed.
Difficulty Five levels from Beginner (52 clues) to Expert (23 clues), each with guaranteed unique solutions.
Themes Ember, Blueprint, Parchment, Slate, and Jade — each with its own color palette and texture.
Hints Unlimited hints, but every one is counted. Your hint total is shown on the win screen.
Notes mode Toggle pencil marks to track candidates in any cell. Cleared automatically when you place a number.
Mobile Designed first for iPhone. Full touch support, no pinch-zoom needed.
Offline No CDN, no server calls. Runs entirely in the browser — works without a connection.