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  2. Mathematics of Sudoku - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_Sudoku

    Mathematical context. The general problem of solving Sudoku puzzles on n2 × n2 grids of n × n blocks is known to be NP-complete. [8] A puzzle can be expressed as a graph coloring problem. [9] The aim is to construct a 9-coloring of a particular graph, given a partial 9-coloring. The Sudoku graph has 81 vertices, one vertex for each cell.

  3. 24 (puzzle) - Wikipedia

    en.wikipedia.org/wiki/24_(puzzle)

    24 (puzzle) The 24 puzzle is an arithmetical puzzle in which the objective is to find a way to manipulate four integers so that the end result is 24. For example, for the numbers 4, 7, 8, 8, a possible solution is . Note that all four numbers must be used exactly once. The problem has been played as a card game in Shanghai since the 1960s, [1 ...

  4. Eight queens puzzle - Wikipedia

    en.wikipedia.org/wiki/Eight_queens_puzzle

    In the game The 7th Guest, the 8th Puzzle: "The Queen's Dilemma" in the game room of the Stauf mansion is the de facto eight queens puzzle. [ 28 ] : 48–49, 289–290 In the game Professor Layton and the Curious Village , the 130th puzzle: "Too Many Queens 5" ( クイーンの問題5 ) is an eight queens puzzle.

  5. Four fours - Wikipedia

    en.wikipedia.org/wiki/Four_fours

    Contents. Four fours. Four fours is a mathematical puzzle, the goal of which is to find the simplest mathematical expression for every whole number from 0 to some maximum, using only common mathematical symbols and the digit four. No other digit is allowed. Most versions of the puzzle require that each expression have exactly four fours, but ...

  6. Tower of Hanoi - Wikipedia

    en.wikipedia.org/wiki/Tower_of_Hanoi

    Tower of Hanoi interactive display at Mexico City's Universum Museum. The Tower of Hanoi (also called The problem of Benares Temple[ 1 ] or Tower of Brahma or Lucas' Tower[ 2 ] and sometimes pluralized as Towers, or simply pyramid puzzle[ 3 ]) is a mathematical game or puzzle consisting of three rods and a number of disks of various diameters ...

  7. Mathematical puzzle - Wikipedia

    en.wikipedia.org/wiki/Mathematical_puzzle

    Mathematical puzzle. Mathematical puzzles make up an integral part of recreational mathematics. They have specific rules, but they do not usually involve competition between two or more players. Instead, to solve such a puzzle, the solver must find a solution that satisfies the given conditions. Mathematical puzzles require mathematics to solve ...

  8. Induction puzzles - Wikipedia

    en.wikipedia.org/wiki/Induction_puzzles

    Induction puzzles are logic puzzles, which are examples of multi-agent reasoning, where the solution evolves along with the principle of induction. [1] [2]A puzzle's scenario always involves multiple players with the same reasoning capability, who go through the same reasoning steps.

  9. Sudoku - Wikipedia

    en.wikipedia.org/wiki/Sudoku

    Phil Kollin of Winchelsea, England, was the series grand prize winner, taking home over £23,000 over a series of games. The audience at home was in a separate interactive competition, which was won by Hannah Withey of Cheshire. Later in 2005, the BBC launched SUDO-Q, a game show that combined Sudoku with general knowledge. However, it used ...

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