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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]
A random assortment of puzzles, together with reader responses to earlier problems 1976 Jan: A breakthrough in magic squares, and the first perfect magic cube: 1976 Feb: Some elegant brick-packing problems, and a new order-7 perfect magic cube 1976 Mar: On the fabric of inductive logic, and some probability paradoxes 1976 Apr
Bordered magic square when it is a magic square and it remains magic when the rows and columns on the outer edge are removed. They are also called concentric bordered magic squares if removing a border of a square successively gives another smaller bordered magic square. Bordered magic square do not exist for order 4.
Some of the more well-known topics in recreational mathematics are Rubik's Cubes, magic squares, fractals, logic puzzles and mathematical chess problems, but this area of mathematics includes the aesthetics and culture of mathematics, peculiar or amusing stories and coincidences about mathematics, and the personal lives of mathematicians.
He is best known for the invention of the crossword puzzle in 1913, when he was a resident of Cedar Grove, New Jersey. [5] Wynne created the page of puzzles for the "Fun" section of the Sunday edition of the New York World. For the December 21, 1913, edition, he introduced a puzzle with a diamond shape and a hollow center, with the letters F-U ...
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 ...
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 .
Patrick D. Berry (born 1970) is an American puzzle creator and editor who constructs crossword puzzles and variety puzzles. He had 227 crosswords published in The New York Times from 1999 to 2018. His how-to guide for crossword construction was first published as a For Dummies book in 2004.