The Fifteen Puzzle and its variants
The Fifteen Puzzle, which was invented by Noyes Chapman in the 1870s, is thought to be the oldest type of sliding puzzle. The puzzle consists of fifteen squares that can be slid around a 4 by 4 grid.…
The Fifteen Puzzle, which was invented by Noyes Chapman in the 1870s, is thought to be the oldest type of sliding puzzle. The puzzle consists of fifteen squares that can be slid around a 4 by 4 grid.…