Slide pieces on the board so that they reach the given end configuration.
History of the puzzleEdit
Most famous and earliest of sliding puzzles, the 15 puzzle, was invented by Noyes Palmer Chapman (USA) in 1874. The game was already popular in America in the 1880s. 
Since then, many variants have emerged. To name a few, Klotski was patented by Lewis W. Hardy (USA) in 1909. On-Off puzzle by Nob Yoshigahara (Japan) was used in a single-puzzle round in WPC 1992.
Appearances in the past WPCsEdit
- WPC 2017/Round 17 by Amit Sowani, Swaroop Guggilam