File:Sudoku Puzzle (a symmetrical puzzle with 17 clues) R4.png

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English: A 17-clue Sudoku with diagonal symmetry. It is attributed to RedEd, who found it from a search of transformations of puzzles in a database by Gordon Royle.
Date
Source Own work. Puzzle by RedEd, constructed from similar puzzle in database by "Gordon": (Symmetrical 17 Clue Puzzle) Posted by Rico Alan, June 21, 2008.
Author LithiumFlash
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I, the copyright holder of this work, hereby publish it under the following license:
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Date/TimeThumbnailDimensionsUserComment
current00:20, 14 April 2017Thumbnail for version as of 00:20, 14 April 2017679 × 679 (27 KB)LithiumFlash (talk | contribs)User created page with UploadWizard

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