Logic is not enough! To unravel a lateral puzzle, you have to train your brain to think differently. Ranging from (relatively) easy to fiendishly hard, these classic conundrums€"almost 100 of them€"require mental agility. Can you figure out these problems from only the vaguest details and yes-or-no questions? It€s challenging, imaginative fun.  
 
This revised edition features entirely new illustrations!