Online Sudoku

Free online Sudoku game with all logic done locally in your browser.

Play Instructions

• basic rules: Fill in the numbers 1-9 in the 9×9 grid so that the numbers in each row, column, and 3×3 house are not repeated
• Difficulty Selection: Easy, Medium, Hard and Expert difficulty
• note function: When note mode is enabled, candidate numbers can be recorded in the grid
• prompt function: provides a limited number of prompts to automatically fill in the correct number
• check function: Check whether the figures filled in are correct at any time
• timing function: Record the time spent solving problems and challenge your best record