Title: New York Post Electrifying Su Doku: 150 Difficult Puzzles, Author: HarperCollins Publishers Ltd.
Title: New York Post Pure Evil Su Doku: 150 Fiendish Puzzles, Author: HarperCollins Publishers Ltd.
Title: New York Post Mind-blowing Su Doku: 150 Fiendish Puzzles, Author: HarperCollins Publishers Ltd.
Title: New York Post Blizzard Su Doku (Fiendish), Author: HarperCollins Publishers Ltd.
Title: New York Post Wicked Su Doku: 150 Difficult Puzzles, Author: HarperCollins Publishers Ltd.
Title: New York Post Snow Storm Su Doku (Difficult), Author: HarperCollins Publishers Ltd.
Title: New York Post Flurries Su Doku (Easy/Medium), Author: HarperCollins Publishers Ltd.