## Logic Puzzles - Difficult

Logic Problems - grouped by difficulty. Includes answers and hints.

folj.com
167K

EXPERT

Logic Problems - grouped by difficulty. Includes answers and hints.

folj.com
167K

Collection of logic puzzles, riddles, optical illusions and games.

brainden.com
243K

wikimedia.org
198K

Only marginally.

bordom.net
119K

Logic Problems - grouped by difficulty. Includes answers and hints.

folj.com
536K

a) All ducks quack. b) Donald is a duck. - Therefore: Donald quacks.

think-lo...ly.co.uk
205K

edcollins.com
168K

he author of this problem is Albert Einstein who said that 98% of the people in the world couldn't solve it.

davar.net
295K