Absolutely Nasty Sudoku Level 4
Spiral-bound – March 1, 2007
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.)
Title: Mensa Absolutely Nasty Sudoku Level 4
Author: Longo, Frank
Publisher: Sterling Pub Co Inc
Publication Date: 2007/03/01
Number of Pages: 159
Binding Type: PAPERBACK
Library of Congress: