Concentration Training Game play online

This is a game developed specifically for training concentration.
Currently includ games:
1. Schulte Grid
Schulte Grid is by far the simplest and most effective way to train your attention.
When training, the position should be pointed out in numerical order, and the shorter the time spent, the more focused.
The game is divided into five levels according to the difficulty. The testee can decide which difficulty to test according to his or her own situation.
Through continuous practice, attention can be more and more concentrated, and eye-hand coordination will be improved.