http://www.logicville.com/
Educational puzzles, brain teasers, mathematical recreations and word games. A resource for anagrams, cryptograms, alphametics, word puzzles, logic problems, doublets, tangrams, chess, and math quizzes.
http://historiddle.50webs.com/
Collection of internet puzzles, riddles and brain teasers based on historic and anecdotic events. Solve the puzzle for each year, find the hidden puzzles and reach the rank of master.