Was going thru' sajha archive and found this thread of 2003 where a few of us were engaged in solving puzzles and introducing new ones. Sadly, the very last puzzle that i posted hasn't been answered yet ( It is, in fact, one of the classic logic puzzles created by Raymond Smullyan). Sajha has changed a lot since then with a lot of new members added to it . I thought if anybody with strong passion for logic and/or puzzles wanna give it a try. So here it is once again:
(A puzzle! --- revisited )
http://www.sajha.com/archives/openthread.cfm?threadid=8932&dsn=sajhaarchive

"The Last Puzzle":
http://www.geocities.com/arch119/reynold.html

Sorry for the duplicate thread. Pls ignore this and see the other one titled "The Unsolved Puzzle"