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  2. Arthur Wynne - Wikipedia

    en.wikipedia.org/wiki/Arthur_Wynne

    Although Wynne's invention was based on earlier puzzle forms, such as the word diamond, he introduced a number of innovations (e.g. the use of horizontal and vertical lines to create boxes for solvers to enter letters). He subsequently pioneered the use of black squares in a symmetrical arrangement to separate words in rows and columns.

  3. Crossword - Wikipedia

    en.wikipedia.org/wiki/Crossword

    A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues. Each white square is typically filled with one letter, while the black squares are used to ...

  4. Glossary of graph theory - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_graph_theory

    1. A book, book graph, or triangular book is a complete tripartite graph K 1,1,n; a collection of n triangles joined at a shared edge. 2. Another type of graph, also called a book, or a quadrilateral book, is a collection of 4-cycles joined at a shared edge; the Cartesian product of a star with an edge. 3.

  5. Crossword abbreviations - Wikipedia

    en.wikipedia.org/wiki/Crossword_abbreviations

    Roman numerals: for example the word "six" in the clue might be used to indicate the letters VI; The name of a chemical element may be used to signify its symbol; e.g., W for tungsten; The days of the week; e.g., TH for Thursday; Country codes; e.g., "Switzerland" can indicate the letters CH; ICAO spelling alphabet: where Mike signifies M and ...

  6. Crosswordese - Wikipedia

    en.wikipedia.org/wiki/Crosswordese

    Crosswordese is the group of words frequently found in US crossword puzzles but seldom found in everyday conversation. The words are usually short, three to five letters, with letter combinations which crossword constructors find useful in the creation of crossword puzzles, such as words that start or end with vowels (or both), abbreviations consisting entirely of consonants, unusual ...

  7. N2 chart - Wikipedia

    en.wikipedia.org/wiki/N2_Chart

    The "N" in an N 2 diagram is the number of entities for which relationships are shown. This N × N matrix requires the user to generate complete definitions of all interfaces in a rigid bidirectional, fixed framework. The user places the functional or physical entities on the diagonal axis and the interface inputs and outputs in the remainder ...

  8. Word-representable graph - Wikipedia

    en.wikipedia.org/wiki/Word-representable_graph

    While each non-complete word-representable graph G is 2(n − κ(G))-representable, where κ(G) is the size of a maximal clique in G, [7] the highest known representation number is floor(n/2) given by crown graphs with an all-adjacent vertex. [7] Interestingly, such graphs are not the only graphs that require long representations. [15]

  9. The New York Times crossword - Wikipedia

    en.wikipedia.org/wiki/The_New_York_Times_crossword

    the clue itself being in that language (e.g., [Saison] for ETE), or; an English prompt with a place where the language is spoken (e.g., [A river in Orleans] for FLEUVE), [A Parisian tower] for TOUR). [6] Foreign words that contain accented letters typically omit the accents in the answer (e.g., [Mother in Montreal] for MERE).