Puzzle Compendium is a compilation of logic-puzzles that are sure to please anybody who enjoys number and logic puzzles. There is a great variation, here, and it includes several pages of Sudoku, including some very unique variants on the traditional Sudoku, for those of you who are looking for more of a challenge.
Packed with unique logic puzzles that are familiar to some and new to others, Puzzle Compendium makes a great gift or travel companion.