Bøger i Puzzle Books for Adults serien

- Tren Puzzles

- Fillomino Puzzles - 100 Math Puzzles With Answers

- Number Ball Puzzles - Best Math Puzzle Collection

- Trinudo Puzzles - 100 Math Puzzles With Answers

- Lighthouses Puzzles - Best Logic Puzzle Collection

- Sign In Puzzles - 100 Math Puzzles With Answers

- Eulero Puzzles - 100 Logic Grid Puzzles With Answers

- Irupu Puzzles

- Triplets Puzzles

- Kin-Kon-Kan Puzzles

- Creek Puzzles

- Numbrix Puzzles

- A Hard Search and Find Books for Adults

- Futoshiki Puzzles

- Numbrix 10x10 Puzzles

- Koburin Puzzles

- Korekutokonekuto Puzzles

- Gappy Puzzles

- Sukoro Puzzles

- Mintonette Puzzles

- Nondago Puzzles

- A Hard Search and Find Books for Adults