February 2009
Intermediate to advanced
192 pages
8h 28m
English
MAKE’s favorite puzzles. (When you’re ready to check your answers, visit makezine.com/17/aha.)

Illustration by Roy Doty
“Einstein’s Riddle”
It’s rumored that Albert Einstein made up this logic puzzle and that he claimed that 98% of the population could not solve it. Are you among the 2%?
There are 5 houses, each of a different color. Each of their owners has a unique heritage, drinks a certain type of beverage, smokes a certain brand of cigarette, and keeps a certain variety of pet. None of the owners have the same variety of pet, smoke the same brand of cigarette, or drink the same beverage.
• The Brit lives ...