Aside from his professional pursuits, George is an avid puzzler. He invented Sujiken(R), a Sudoku variation played on a right-triangle arrangement of cells in which numbers cannot repeat in a horizontal row, vertical column or diagonal in any direction.
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|Title||Research Into Practice - Reality and Gaps|
|File size||6 Mb|
|eBook format||Paperback, (torrent)|
|Book rating||0 (0 votes)
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