15 Puzzle - Sam Lloyd's logical game to play online. Play online Sam Lloyd's "15" puzzle. The funny story and mathematical implications of this game. Some funny logical problems with the 15 game.

Everybody knows this logical game's purpose: the player has to order the tiles like this: 13 14 15 You can play online Sam Lloyd's "15" puzzle here. Sam Lloyd (1841-1911) launched a problem: can you solve the game, if initially the tiles are arranged like in the image below? 13 15 14