15 interesting logic problems
Some good ones in there, the first one (ropes and lighter) is great.
http://3quarksdaily.blogs.com/3quarksdaily/2006/11/i_challenge_you.html
Some good ones in there, the first one (ropes and lighter) is great.
http://3quarksdaily.blogs.com/3quarksdaily/2006/11/i_challenge_you.html