Jeff Heldt

Ying - Yang Puzzles (Logic Puzzles and Teasers, #1)

Mathematics Puzzle Games With Answers (Math Brain Teasers for Adults, #3)

Mind Games (Logic Puzzles and Teasers, #2)

Puzzles Based On Maths (Logic Puzzles and Teasers, #3)

Mathematical Brain Teasers (Math Brain Teasers for Adults, #2)

Fun Brain Teaser Games (Logic Puzzles with Answers, #1)

Math Games (Math Brain Teasers for Adults, #1)

Great Brain Teasers (Logic Puzzles with Answers, #6)

Hard Mind Puzzles (Hard Puzzles, #1)

Fun Puzzles To Solve (Logic Puzzles with Answers, #5)

Fun Puzzle Games (Logic Puzzles with Answers, #3)

Fun Puzzle Games For Adults (Logic Puzzles with Answers, #4)

Fun Mind Games (Logic Puzzles with Answers, #2)

Small Mind Puzzles (Logic Puzzles with Answers, #3)

Easy Mathematical Puzzles (Brain Puzzles with Answers, #4)

Brain Teasers And Riddles For Adults (Brain Puzzles with Answers, #3)

Brain Teasers And Answers For Adults (Brain Puzzles with Answers, #2)

Best Brain Games (Brain Puzzles with Answers, #1)

Fun Brain Games (Brain Puzzles with Answers, #5)

Easy Maths Puzzles With Answers (Logic Puzzles with Answers, #2)

Brain Teasers And Games (Logic Puzzles with Answers, #1)

Brain Logic Puzzles (Brain Games and Puzzles, #1)

5th Grade Math Puzzles (Brain Games for Kids, #1)