Sudoku

Sudoku

A clean, no-frills Sudoku game playable in your browser.

Fill the 9×9 grid so that every row, column, and 3×3 box contains the digits 1–9 exactly once. Every puzzle is uniquely generated — no two games are the same.

Features

  - Three difficulty levels — Easy, Medium, and Hard

  - Pencil notes to track candidate digits

  - Hint system that reveals the most constrained empty cell

  - Live error highlighting for conflicting digits

  - Stopwatch timer with best-time tracking per difficulty

  - Clean, minimal design that gets out of your way

How to play

  - Click a cell to select it

  - Click a number on the pad (or press 1–9 on your keyboard) to fill it in

  - Toggle Notes mode to pencil in candidates instead

  - Del clears a cell — Hint fills in one cell for you

  - Complete the grid with no conflicts to win