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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. 15 Vintage Puzzles Worth a Puzzling Fortune - AOL

    www.aol.com/finance/15-vintage-puzzles-worth...

    Read more The post 15 Vintage Puzzles Worth a Puzzling Fortune appeared first on Wealth G. ... Complete sets can sell for anywhere from just $20 to over $100, depending on the year and condition.

  6. List of unsolved problems in mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.

  7. 15 Best Puzzles for Adults - AOL

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

    This puzzle is just one of many breathtaking offerings from Surf Shack Puzzles, a wahine-owned, self-described “mom and pop” puzzle company based in Hawaii. Details: Art by Hawai’i designer ...

  8. This puzzle sat unsolved for 2,500 years — until one student ...

    www.aol.com/puzzle-sat-unsolved-2-500-190935979.html

    “As I turned the pages, these patterns starting emerging, and it all started to make sense.”

  9. 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.