Fifteen Puzzle

Count -  moves

How to start: Click or tap on the Start button to mix up the pieces.  The aim is to get them back in order by clicking / tapping on the numbers to slide them into the empty box. There is no target, as different shuffles need a different number of moves, but generally under 100 moves is a good score.  Hint: You can slide more than one piece at a time by clicking / tapping numbers further away from the empty box.

History: This is the original Fifteen slide puzzle invented around 1878 and marketed by Sam Loyd Senior (1841-1911) and it is also called ‘Jeu de Taquin’ or ‘Teasing Game’ in France.   Loyd turned it into an impossible puzzle by making it with the 14 and 15 pieces swapped.  The $1000 prize for its solution was of course never won!
Now why not try the Eight Puzzle
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