Play Ultimate Sudoku, an online puzzle game. Fill in the blank cells with numbers from 1 to 9 so that they are not repeated horizontally or vertically.
Basic Rules
- You need to fill in the blank cells with numbers from 1 to 9.
- Each horizontal row must contain all the numbers from 1 to 9 and cannot be repeated.
- Each vertical column must also contain the numbers from 1 to 9 only once.
- In each 3x3 cube, the numbers from 1 to 9 can only appear once.
An example game in Ultimate Sudoku
Gameplay and Control Modes
Number Input Modes
- Cell First Mode: You select the blank cell first, then choose the number you want to fill in.
- Number First Mode: You select the number first, then click on the blank cells to fill in that number.
- Memo Mode: This mode allows you to write down your predicted numbers in the blank cells. It's very useful when you encounter difficult puzzles.
Helpful Tools
- Undo: Allows you to go back to the previous step.
- Hint: Helps you when you get lost.
- Settings: Where you adjust the sound or other settings.
Features of Ultimate Sudoku
- Real-time: The game has a timer to help you track your puzzle-solving speed.
- Simple Graphics: Gentle colors prevent eye strain during extended play.
- Variety of Difficulty Levels: Suitable for both beginners and Sudoku experts.
