Contains over 7,000 problems in total.
【overview】
You can choose from a list of questions or choose from two random patterns.
Since the questions are divided into levels of difficulty, you can ask questions tailored to each respondent.
The levels are as follows.
★☆☆☆☆: Super easy
★★☆☆☆:Easy
★★★☆☆: Normal
★★★★☆: Difficult
★★★★★:Super difficult
[Hint function]
A hint is set for each problem.
If you can't solve it, check out the hints!
*Some questions may not have hints.
*If you see the hint for the first time, an advertisement will play.
[Register as favorite]
You can save your favorite questions and save yourself the trouble of searching for the same question again.
[Riddle post]
You can post your own riddles!
If there are no problems with the content of the riddles posted, the administrator will set the level and post them on this app!