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THE UNSOLVABLE 15 PUZZLE: do you want to challenge your friends in solving the 15 puzzle and always win? With "15 Challenge" you have a two-mode game, the classical easy mode and a (mathematically) proved unsolvable mode. Just make your friends play with the unsolvable mode, you can bet a beer on it, you will be the winner!

Thanks to a mathematical trick the puzzle is made unsolvable (default state). Challenge your friends to solve the puzzle in less than a minute.. you will win. Then try yourself turning on the solvable mode (by pushing the invisible button on the left of the shuffle button). A little fly will appear close to the reset button indicating that the (easily) solvable version is active. Have fun with your friends by let them try and retry..


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0/5 stars

No good

This puzzle us still VERY HARD in the simple setting


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The information may be outdated (2011-03-29 15:06:39). For actual information go to iTunes

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