＼＼Currently over 100,000 questions／／
Challenge the mystery-solving ranking!
▶ <365 days> New puzzle solving problems appear one after another!

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There is no charge [Enjoy completely free]
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◢◤ Mystery Solving IQ Test / Deviation Ranking / Time Attack Riddle
Fun and accurate "mystery-solving IQ / deviation value" is measured from the number of various problems that test various mystery-solving skills and the participation data of more than 200,000 people nationwide.
Aim high IQ group MENSA level. Would you like to test your riddle-solving skills?

◢◤ Create and share puzzle-solving problems / Become a popular puzzle-solving creator
A simple puzzle-composing tool for solving riddles and popular riddle rankings based on user votes.
It is also possible to make a buzz with the first puzzle-solving work. ``Minna no Mystery Solving'' is the trigger to debut as a professional mystery solving creator one after another.

∵∴ I didn't have that idea － ∴∵
An unsolvable mystery-solving problem created by mystery-solving experts. A puzzle-solving game with an overwhelming number of divine questions.
It is also recommended for puzzle solving tests, puzzle solving events / real escape game practice, IQ tests / brain training.
All puzzle-solving games are free and safe for children. It's a free puzzle-solving game that makes you smart and fun.

Produced by Minna no Management Bureau
Sound: OtoLogic (CC BY 4.0)