Concentration is very critical to the brain, because you can’t expect that much from a distracted mind.

This test is a little bit hard, but this workout can help your brain gain the ability to concentrate and deal with problems solving more efficiently. The complexity of the game depends on the level you chose, you can start with the lowest level and as you learn the rules of the game you can go up in this exercise. Check the instructions all the way at the bottom to learn how to play this concentration game.

How to play:

Click on one of the buttons in the playing field
to subtract 1 from that button's value,
as well as from the values of the 4 surrounding ones.

Objective:

Set all buttons to '0'.

Example (a click on the "2" in the middle):

Things you should know:

         As soon as you click on "New", a new game starts.

         The score starts counting down from 1000.

         The quicker you finish, the higher your score will be.

"Undo" and "Hint" as well as using more "Clicks" than the current difficulty setting requires,
will all make you lose a couple points.