mikejuk writes "Andrew Gallagher at Cornell University in Ithaca, New York has improved the standard approach to automated jigsaw solving by copying what humans do in finding groups of pieces that best match and working outwards from there. With a speed of 10,000 pieces per 24 hours, it can solve large puzzles. Not only that, but the type of jigsaw it solves is more difficult than the usual in that the pieces are square and can be placed in any orientation. It is so good it can even solve problems consisting of a number of mixed up pieces without being told how many or their dimensions. Of course, as well as having fun beating humans at another recreational pastime, the technique could be used to unscramble shredded documents, as per the recent DARPA challenge."
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