Dell Original Sudoku Has hours of solving fun to enjoy. You’ll find over 180 puzzles at four difficulty levels: easy, medium, hard, and challenger.  The magazine is perfect for both beginners and more experienced solvers. Includes two jumbo issues. Digest size, 4 issues-112 pages and 4 issues-160 pages.

Logic Lovers Math & Logic Problems Try your hand at dozens of math puzzles and logic problems, guaranteed to keep your brain active for hours. Enjoy Figure Logics, Cross Sums, Number Place, Word Arithmetic, and a whole lot more!