Concepts mastered

This is the kind of game very simple concept and much more complex achievement. The challenges are many (100) and progressive. What you allow time to try your hand, or rather neurons. And in the end you will have your money well, even very well.
The principle is the same as the "IQ Puzzler" from the same publisher, and the differences are sufficient to renew the interest of the game and the challenge of the different challenges
Good point for the articulated hinge between the two plates, while that of "IQ Puzzler is welded and is therefore more likely to break over time.
In summary, great concept that is worth very penny to use.