Mega Memory Puzzles

by Lisa Regan

Published 30 December 2019

Super Logic Puzzles

by William C Potter and Lisa Regan

Published 30 December 2019

Problem-Solving Puzzles

by William C Potter and Lisa Regan

Published 30 December 2019



Mind-Bending Math Puzzles

by Lisa Regan

Published 30 December 2019

Amazing Observation Puzzles

by Lisa Regan

Published 30 December 2019