fun brain exercise app!Touch the block piece you want to slide and sort the numbers in ascending order from left to right. Improve yourself according to the number of moves. You can think of it as a kind of brain training.To win the game, it is necessary to arrange the numbers in order, starting with 1.In this version of the game there is not only a 3x3 size grid, but also a 4x4, 5x5, 6x6 and 7x7.