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  2. Magic square - Wikipedia

    en.wikipedia.org/wiki/Magic_square

    The smallest (and unique up to rotation and reflection) non-trivial case of a magic square, order 3. In mathematics, especially historical and recreational mathematics, a square array of numbers, usually positive integers, is called a magic square if the sums of the numbers in each row, each column, and both main diagonals are the same.

  3. Lee Sallows - Wikipedia

    en.wikipedia.org/wiki/Lee_Sallows

    Sallows is an expert on the theory of magic squares [1] and has invented several variations on them, including alphamagic squares [2] [3] and geomagic squares. [4] The latter invention caught the attention of mathematician Peter Cameron who has said that he believes that "an even deeper structure may lie hidden beyond geomagic squares" [5]

  4. Bernard Frénicle de Bessy - Wikipedia

    en.wikipedia.org/wiki/Bernard_Frénicle_de_Bessy

    Bernard Frénicle de Bessy (c. 1604 – 1674), was a French mathematician born in Paris, who wrote numerous mathematical papers, mainly in number theory and combinatorics.He is best remembered for Des quarrez ou tables magiques, a treatise on magic squares published posthumously in 1693, in which he described all 880 essentially different normal magic squares of order 4.

  5. Geometric magic square - Wikipedia

    en.wikipedia.org/wiki/Geometric_magic_square

    A geometric magic square, often abbreviated to geomagic square, is a generalization of magic squares invented by Lee Sallows in 2001. [1] A traditional magic square is a square array of numbers (almost always positive integers) whose sum taken in any row, any column, or in either diagonal is the same target number.

  6. Sudoku - Wikipedia

    en.wikipedia.org/wiki/Sudoku

    On July 6, 1895, Le Siècle 's rival, La France, refined the puzzle so that it was almost a modern Sudoku and named it carré magique diabolique ('diabolical magic square'). It simplified the 9×9 magic square puzzle so that each row, column, and broken diagonals contained only the numbers 1–9, but did not mark the subsquares. Although they ...

  7. Rubik's Magic - Wikipedia

    en.wikipedia.org/wiki/Rubik's_Magic

    Rubik's Magic: Master Edition (most commonly known as Master Magic) was manufactured by Matchbox in 1987. It is a modification from the Rubik's Magic, with 12 tiles instead of the original's 8. The puzzle has 12 panels interconnected with nylon wires in a 2 × 6 rectangular shape, measuring approximately 4.25 inches (10.5 cm) by 13 inches (32 cm).

  8. Sator Square - Wikipedia

    en.wikipedia.org/wiki/Sator_Square

    The Sator Square (or Rotas-Sator Square or Templar Magic Square) is a two-dimensional acrostic class of word square containing a five-word Latin palindrome. [1] The earliest squares were found at Roman-era sites, all in ROTAS-form (where the top line is "ROTAS", not "SATOR"), with the earliest discovery at Pompeii (and also likely pre-AD 62).

  9. 15 puzzle - Wikipedia

    en.wikipedia.org/wiki/15_puzzle

    The puzzle was "invented" by Noyes Palmer Chapman, [16] a postmaster in Canastota, New York, who is said to have shown friends, as early as 1874, a precursor puzzle consisting of 16 numbered blocks that were to be put together in rows of four, each summing to 34 (see magic square).