The puzzle was invented by Noyes Palmer Chapman in 1874. Sam Loyd claimed from 1891 until his death in 1911 that he invented the puzzle. Loyd offered a $1,000 prize for anyone who could provide a solution for achieving a particular combination reversing the 14 and 15. This was impossible, as it required a transformation from an even to an odd combination. The goal is to place the tiles in order. You can do sliding moves that use the empty space. You cannot remove a stone from the puzzle.
Create: The 1-2-3-4 Combination
Create: The 5-6-7-8 Combination
Create: The 9-10-11-12 Combination
Rotate and rearenge two bottom rows a couple of times as needed
You can use software of Setup Group to play Puzzle 15 on your