Bøger af Robert Lorens

- Fillomino 7x7 - 200 Logic Puzzles with Answers

- Hitori Puzzles - 200 Logic Puzzles with Answers

- Futoshiki 8x8 Puzzles - 200 Logic Puzzles with Answers

- Maze Puzzles - 200 Logic Puzzles with Answers

- Yagit Puzzles - 200 Logic Puzzles with Answers

- Kin-Kon-Kan Puzzles - 200 Logic Puzzles with Answers

- Galaxies Puzzles - 200 Logic Puzzles with Answers

- Futoshiki 6x6 - 200 Logic Puzzles with Answers

- Island Puzzles - 200 Logic Puzzles with Answers

- Arrows Puzzles - 200 Logic Puzzles with Answers

- Pipelink Puzzles - 200 Logic Puzzles with Answers

- Hashiwokakero Puzzles - 200 Logic Puzzles with Answers

- Clouds Puzzles - 200 Logic Puzzles with Answers

- Araf Puzzles - 200 Logic Puzzles with Answers

- Calcudoku 8x8 - 200 Logic Puzzles with Answers

- Calcudoku 7x7 - 200 Logic Puzzles with Answers

- Renban Puzzles - 200 Logic Puzzles with Answers

- Trinudo Puzzles

- Santoitchi Puzzles

- Maze Puzzles

- Hamusando Puzzles

- UFO Puzzles

- Bodaburokku Puzzles

- Thermometers Puzzles

- Snake Puzzles

- Chocolate Puzzles

- Trace Numbers Puzzles

- Sukoro Math Puzzles

- Four Winds Logic Puzzles

- No Four in a Row Puzzles