Sudoku - brain training Sudoku

Sudoku is a popular puzzle game that you can play for free.
Let's have fun playing Sudoku and do brain training!

[How to play Sudoku]
Sudoku is a puzzle that puts numbers from 1 to 9 in a 9x9 square frame separated by 3x3 blocks.
Don't put numbers in empty squares and two or more of the same numbers in 3x3 squares separated by vertical, horizontal, and thick lines.
If you can fill all the squares without the numbers, Sudoku will be cleared.
Sudoku has a very simple rule, so it is a popular number puzzle game that you can play easily.

[Function]
·Memo function
While playing Sudoku, use the memo function if you don't know the number to be in the square.You can make a note of the possible numbers in the mass.This is a must-have function to clear Sudoku smoothly, so please use it.

·Hint function
If you don't know Sudoku's answer, use the hint function.
By using the hint function, you can find the numbers that you don't understand.
By using the hint function, you can aim to clear Sudoku efficiently.

·Back button
You can use the Back button to return to the state you are playing in Sudoku.

·Save the game
Don't worry if you quit Sudoku in the middle.
The data you're playing is automatically saved, so you can resume Sudoku at any time.

[Recommended person]
·People who like Sudoku
·People who like puzzle games
·Those who don't like Sudoku playing on paper
·Those who have too much free time on their hands
·Those who just want to move their brains
·Those who like to play games

[Development]
IKURA CORPORATION