5211790
9780550102775
For puzzle solvers who want the ultimate sudoku challenge, London's Independent newspaper brings together a second collection of the large and incredibly addictive super sudoku puzzles, with an expanded 4-by-4 box. In addition to the numbers 0 through 9, the letters A through F must also be put into each grid, without repeating in any row or column.Chambers Editors is the author of 'Independent Book of Super Sudoku ', published 2005 under ISBN 9780550102775 and ISBN 0550102779.
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