Stage: 3 and 4 Challenge Level: 
Our Advent Calendar has a Sudoku for each day during the build-up to Christmas.
Simply click on the dates to complete the challenges.
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Published December 2007.
Copyright © 2007. University of Cambridge. All rights reserved.
NRICH is part of the family of activities in the Millennium Mathematics Project, which also includes the Plus and Motivate sites.
email: nrich@damtp.cam.ac.uk