15 puzzle

The goal of the puzzle is to place the tiles in numerical order.

Unlike the classic game, where only numbered tiles are used, a mode with alphabet, with pictures and a blind game (when the numbers are shown for memorization and then turn off) are also possible. This allows you to develop memory, to learn the alphabet. In addition to the classic game 4 by 4, an arbitrary installation is possible up to 9 by 9.