Jeff Heldt

Puzzles For Brain Development (Logic Puzzle Games, #3)

Number Brain Teasers (Logic Puzzle Games, #1)

Geometry Puzzles (Logic Puzzle Books, #5)

Quick Puzzle Games (Logic Puzzle Games, #4)

Square Puzzles (Logic Puzzle Games, #5)

Mind Logic Games (Logic Puzzle Books, #6)

Puzzle Games For Girls (Logic Puzzle Games, #2)

Block Puzzle Classic (Logic Puzzle Books, #1)

Fun Logic Games (Logic Puzzle Books, #4)

Block Puzzles (Logic Puzzle Books, #2)

Brain Tickler (Logic Puzzle Books, #3)

Kakuro Puzzle (Kakuro Puzzle Books, #3)

Maths Small Puzzles (Math Puzzle Books, #1)

Brain Teasers With Answers For Students (Kakuro Puzzle Books, #2)

Best Mind Teasers (Kakuro Puzzle Books, #1)

Mathematical Puzzles For Children (Math Puzzle Books for Kids, #1)

Daily Maths Puzzle (Calcudoku Puzzle Books, #3)

Brain Training Puzzles (Killer Sudoku Puzzle Books, #1)

Brain Teaser Games And Puzzles (Calcudoku Puzzle Books, #1)

Complex Math Puzzles (Calcudoku Puzzle Books, #2)

Difficult Maths Puzzles With Answers (Killer Sudoku Puzzle Books, #2)

Math Puzzles For Grade 6 (Math Puzzles and Brainteasers, #3)

Math Puzzles For Grade 7 (Math Puzzles and Brainteasers, #4)

4th Grade Math Riddles (Math Puzzles and Brainteasers, #1)