Book 1

Block Puzzle Classic

by Jeff Heldt

Published 26 August 2018

Book 1

Math Logic Puzzles For Adults

by Jeff Heldt

Published 19 August 2018

Book 2

Block Puzzles

by Jeff Heldt

Published 26 August 2018

Book 3

Brain Tickler

by Jeff Heldt

Published 26 August 2018

Book 4

Fun Logic Games

by Jeff Heldt

Published 26 August 2018

Book 5

Geometry Puzzles

by Jeff Heldt

Published 27 August 2018

Book 6

Mind Logic Games

by Jeff Heldt

Published 27 August 2018