SUDOKU classy vs Intelligence Test Usage & Stats

Features - 4 difficulty levels There are 4 levels of difficulty, and you can enjoy it from beginners to advanced players. -UNDO button You can undo the action. -ERASE button You can remove the number. -MEMO button Write a provisional answer. Turn on the memo button and write the number. -HINT button It will tell you the answer when you don't know the answer. -Show mistakes We'll let you know when you write the wrong answer. This feature can also be turned off. -Clear memos If you write an answer after writing a memo, unnecessary memos will be deleted. This feature can also be turned off. -Hide numbers buttons After writing the same number 9 times, the number button disappears. This feature can also be turned off. -BGM on/off BGM can be turned off. -SE on/off SE can be turned off. -Theme Choose your favorite from 4 themes.