Olefsky, Jake, author.

The Brain Strain Book : Over 400 puzzles, riddles, & mindbenders to flex your mental muscles / JAKE OLEFSKY -- Petaling Jaya : Advantage Quest Publications, 2012

x, 213 pages ; 22 cm

ISBN:  9789833832804

1. Riddles  2. Puzzles 

793.73 OLE