User contributions for Contestcen

A user with 111 edits. Account created on 21 June 2007.
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6 May 2012

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  • 04:4604:46, 16 May 2009 diff hist +400 N Talk:Sparse rulerCreated page with 'I have created this page as a starting point for this subject. Puzzles about sparse rulers have appeared in puzzle columns for decades. I am hoping that others wi…'

15 May 2009

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