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  2. 15 puzzle - Wikipedia

    en.wikipedia.org/wiki/15_puzzle

    The 15 puzzle (also called Gem Puzzle, Boss Puzzle, Game of Fifteen, Mystic Square and more) is a sliding puzzle. It has 15 square tiles numbered 1 to 15 in a frame that is 4 tile positions high and 4 tile positions wide, with one unoccupied position.

  3. List of impossible puzzles - Wikipedia

    en.wikipedia.org/wiki/List_of_impossible_puzzles

    This is a list of puzzles that cannot be solved. An impossible puzzle is a puzzle that cannot be resolved, either due to lack of sufficient information, or any number of logical impossibilities. Kookrooster maken 23; 15 Puzzle – Slide fifteen numbered tiles into numerical order. It is impossible to solve in half of the starting positions.

  4. Talk:15 puzzle - Wikipedia

    en.wikipedia.org/wiki/Talk:15_puzzle

    But mn-1 puzzles can be treated like n^2-1 puzzles with an extra row (i.e. concentrating on the row(s) first) -- 46.173.12.68 10:44, 8 October 2013 (UTC) The classic solution for the n^2-1 puzzle is to create an (n-1)n-1 puzzle by solving the first row and continuing to solve the mn-1 reducing m by 1 each iteration until m=2.

  5. Solved game - Wikipedia

    en.wikipedia.org/wiki/Solved_game

    A solved game is a game whose outcome (win, lose or draw) can be correctly predicted from any position, assuming that both players play perfectly.This concept is usually applied to abstract strategy games, and especially to games with full information and no element of chance; solving such a game may use combinatorial game theory or computer assistance.

  6. 15 Best Puzzles for Adults - AOL

    www.aol.com/entertainment/15-best-puzzles-adults...

    Puzzle dimensions: 19.25 x 26.6 inches. 1,000 pieces. 5. Mesa Puzzles – Brooklyn Bakery, $40. ... 15. OMY – Graphic Puzzle, $44. OMY. Diving into this puzzle is like entering a whole new world ...

  7. God's algorithm - Wikipedia

    en.wikipedia.org/wiki/God's_algorithm

    The Fifteen puzzle can be solved in 80 single-tile moves [6] or 43 multi-tile moves [7] in the worst case. For its generalization the n -puzzle, the problem of finding an optimal solution is NP-hard , [ 8 ] so it is not known whether there is a practical God's algorithm.

  8. Icomania cheats and answers: Level 15 (Part 1) - AOL

    www.aol.com/news/2013-04-30-icomania-cheats...

    This past weekend was beautiful with temperatures in the low 70s, so we spent the time relaxing outside solving even more level 15 puzzles in Icomania. Not sure how many are left, but we can ...

  9. File:15-puzzle-solvable.svg - Wikipedia

    en.wikipedia.org/wiki/File:15-puzzle-solvable.svg

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