Top solvers can try their hand at the One-Sided Gordonian Rectangle; Extended Gordonian Rectangle; Gordonian Polygon; and Alternating Digits. (But they can take comfort in knowing that no more than one will occur in any single puzzle.)
Mensa Absolutely Nasty Sudoku Level 4
- 作者： Longo, Frank
- 出版社： Sterling Pub
- 出版日期： 2007-03-01
- ISBN碼： 9781402743993
- 編號： 2039790273989
$ 313 元
原價 348
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$313