NoAdsGuy's Sudoku

Sharpen your mind with classic Sudoku, redesigned for a clean, modern mobile experience. FEATURES - Four difficulty levels: Easy, Medium, Hard, and Expert, each puzzle guaranteed to have a unique solution. - Custom mode: build your own puzzle from a blank grid, validated automatically so every custom puzzle you play has exactly one solution. - Notes mode: pencil in candidate numbers in a clean 3x3 mini-grid inside each cell. - Undo, Verify, and Autofill: check your work against the solution at any time, or reveal the answer when you're stuck (autofilled puzzles are marked and excluded from your high scores, so your leaderboard always reflects real solves). - Dedicated High Scores page: your best times for each difficulty, ranked, with the option to clear a leaderboard and start fresh. - Simple, distraction-free interface: number-first input, tap a number then tap the cells you want to fill. No account required. No ads. No internet connection needed. Your progress and times are saved privately on your own device. Whether you're a Sudoku beginner working through Easy puzzles or an expert chasing your best Expert time, Sudoku gives you a clean board and gets out of your way.