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Hoffman's Hard Sudoku 1: 250 Challenging Puzzles George Hoffman
Hoffman's Hard Sudoku 1: 250 Challenging Puzzles
George Hoffman
| Media | Books Paperback Book (Book with soft cover and glued back) |
| Released | July 7, 2014 |
| ISBN13 | 9781500441593 |
| Publishers | Createspace |
| Pages | 88 |
| Dimensions | 216 × 279 × 5 mm · 226 g |