Fifteen - gems

“Fifteen - gems” is one of the most famous puzzles in the world. It is a 4x4 square and 15 square knuckles. There is also 1 free space for one knuckle. The goal of the game is to arrange the placement of numbers, placing them ascending from left to right and from top to bottom, starting with the knuckle with number 1 in the upper left corner and ending with an empty space in the lower right corner. The end of the game is considered when all the knuckles from 1 to 15 are behind each other. It looks like a simple and easy game is addictive for long hours, and gives you a good mood and bright unforgettable emotions. The game will help you develop memory and logical thinking. You will develop the ability to calculate moves forward without errors. Will we play?