Klotski

Klotski is an ancient Polish game that provides mathematical problems in the form of a small wooden game board with various sized blocks. Developed in Poland by an artist and mathematician, the computer game Klotski is patterned after the ancient original game, which in Polish is called Klocki, or blocks. The blocks on the original game board could be arranged into puzzles in which a master block had to be freed to solve the puzzle. The object of the computer game is to free the master block, in as few moves as possible.

With these words ZH Computer described the concept that they, as far as I know, first introduced into the world outside Poland. They called their game Klotski, a spelling of klocki that will cause most non-Slavs to pronounce it correctly. It was included in the Microsoft Entertainment Pack for Windows, ensuring wide circulation and making the concept well known.

Klotski Implementations
Bricks	I.Q. Puzzle	Klotski
Slider	Try and solve it!