 | - Able2Know - A public forum for riddlers and riddle lovers in several topics..
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 | - Brain Teasers - Classic puzzles and riddles sorted in several sections - general logic, weighing puzzles, Einstein's riddles, number sequences, and crossing river..
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 | - DiMensIoNS - Riddles abound, odd and complex riddles, brain teasers. Explained meanings and complete answers..
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 | - Harder Riddles - Some harder riddles marked with stars to identify the degree of difficulty of each riddle. Accompanied with answers..
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 | - Historiddle - Collection of free internet puzzles, riddles and brain teasers based on the history of the 20th century..
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 | - HumorShack - Archive of cartoons, riddles with answers and a free mailinglist..
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 | - The Masters of Logic - The difficulty of the logic puzzles increases until almost unsolvable. The list "The Masters of Logic" shows the solutions..
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 | - MindBreakers - Since 1995 free puzzles, riddles, brain teasers, quizes, and games. Fascinating riddles and multipart puzzles..
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 | - OnlyRiddles.com - Searchable database of riddles with answers. Accepts visitor submissions and offers an RSS feed..
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 | - PickandSend - A collection of brain teasers, riddles, and logic puzzles. Answers on highlight, sending feature..
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 | - Puzzles & Riddles - IT experts provide answers to some of the most demanding puzzles and riddles..
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 | - Puzzles by Sam Loyd - Ten puzzles from a collection that appeared in various newspapers and magazines over the previous fifty years..
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 | - The Riddle Contest - An online contest for riddle lovers. Expect to encounter a broad array of different puzzle types as well..
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 | - Riddle Planet - A contest with twenty-five riddles per each classified round with a money prize for the first person to solve them all..
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 | - RiddleAday - Riddles, puzzles and brain teasers to challenge and entertain all ages. [E-mail lists].
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 | - Riddles - Some challenging riddles to solve. Answers below each of them..
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 | - Riddles.com - Large riddle database categorized by difficulty. Includes a search feature..
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 | - Stumpers - Math and word riddles, which were created by students in Mrs. Henson's classroom. Includes answers..
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 | - Sureshot Riddles - A fun and challenging collection of logic riddles and sequences..
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 | - Tree Riddle - An old multiple riddle. Identify 65 names of trees..
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