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Sudoku, Puzzles, Mathematical recreations, Ciphers, Optical illusions, Brainstorming, Juvenile literature, Logic puzzles, Picture puzzles, Riddles, Visual perceptionID Numbers
- OLID: OL341080A
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| September 5, 2008 | Edited by RenameBot | fix author name |
| April 1, 2008 | Created by an anonymous user | initial import |












