IQ development game inspired by Japan efficient methodology by Ryuta Kawashima. Development could be fun!
Training and solving of the math tasks against the time is a basis of mind training methodology.

+ Game rules
Look at equation. Solve whether it is true or false.

+ Game modes.
- Solve as much equations as you can in particular time.
- Solve equations as fast as you can.
- Solve equations against the time infinitely.

Constant mind training is a way to prolong you life and to make grey matter stay tuned.
Improve you solver mastery.