Hard Math Puzzles For Adults - Rebecca Howell - Books - - 9781720012917 - September 1, 2018
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Rebecca Howell
Hard Math Puzzles For Adults

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Sujiken (from Japanese "sujikai", literally "diagonal") is a variation of Sudoku, invented by George Heineman (USA). The puzzle consists of a triangular grid of cells containing digits from 1 to 9. The objective is to fill a grid with digits so that each cell contains a digit and no digit is repeated in any column, row and diagonal in any direction. Also, no digit occurs twice in any of the three larger 3 x 3 square regions and any of the three larger triangular regions enclosed by thick borders.

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Media Books     Paperback Book   (Book with soft cover and glued back)
Released September 1, 2018
ISBN13 9781720012917
Pages 116
Dimensions 152 × 229 × 7 mm   ·   181 g
Language English  

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