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  2. Anatree - Wikipedia

    en.wikipedia.org/wiki/Anatree

    An anatree [1] is a data structure designed to solve anagrams. Solving an anagram is the problem of finding a word from a given list of letters. These problems are commonly encountered in word games like Scrabble or in newspaper crossword puzzles. The problem for the wordwheel also has the condition that the central letter appear in all the ...

  3. Spiral puzzle - Wikipedia

    en.wikipedia.org/wiki/Spiral_puzzle

    For example, the letters "I M P U G N I N G I S" could be given a clue for the answers "IMPUGNING" followed by "ISLE" in one direction, and "SIGNING UP" followed by "MILE" in the other. [1] The lack of crossing words makes spiral puzzles more difficult to solve. For more difficult types of spiral puzzles, the numbering in the spiral is missing. [3]

  4. Acrostic (puzzle) - Wikipedia

    en.wikipedia.org/wiki/Acrostic_(puzzle)

    Anacrostic may be the most accurate term used, and hence most common, as it is a portmanteau of anagram and acrostic, referencing the fact that the solution is an anagram of the clue answers, and the author of the quote is hidden in the clue answers acrostically.

  5. Anagram - Wikipedia

    en.wikipedia.org/wiki/Anagram

    Animation for the anagram "Listen = Silent" An anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once. [1] For example, the word anagram itself can be rearranged into the phrase "nag a ram". The original word or phrase is known as the subject of the ...

  6. Sudoku solving algorithms - Wikipedia

    en.wikipedia.org/wiki/Sudoku_solving_algorithms

    A Sudoku starts with some cells containing numbers (clues), and the goal is to solve the remaining cells. Proper Sudokus have one solution. [1] Players and investigators use a wide range of computer algorithms to solve Sudokus, study their properties, and make new puzzles, including Sudokus with interesting symmetries and other properties.

  7. The Hardest Logic Puzzle Ever - Wikipedia

    en.wikipedia.org/wiki/The_Hardest_Logic_Puzzle_Ever

    The Hardest Logic Puzzle Ever is a logic puzzle so called by American philosopher and logician George Boolos and published in The Harvard Review of Philosophy in 1996. [1] [2] Boolos' article includes multiple ways of solving the problem.

  8. Cryptic crossword - Wikipedia

    en.wikipedia.org/wiki/Cryptic_crossword

    A 15x15 lattice-style grid is common for cryptic crosswords. A cryptic crossword is a crossword puzzle in which each clue is a word puzzle. Cryptic crosswords are particularly popular in the United Kingdom, where they originated, [1] as well as Ireland, the Netherlands, and in several Commonwealth nations, including Australia, Canada, India, Kenya, Malta, New Zealand, and South Africa.

  9. Hangman (game) - Wikipedia

    en.wikipedia.org/wiki/Hangman_(game)

    Example game in which the letters A and N but not the whole word HANGMAN were guessed – incorrect guesses are noted at the bottom. Hangman is a guessing game for two or more players. One player thinks of a word, phrase, or sentence and the other(s) tries to guess it by suggesting letters or numbers within a certain number of guesses.