All the sudoku books on amazon
- a coverpop by jim bumgardner, of krazydad.com
- covers from amazon.com
- move the mouse over the covers to see more information, click for amazon
- this mosaic was last updated Thursday, March 26th, 2015
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"This. Is. Amazing. I just lost an hour of my life to playing with this and had to close the window or I would have lost another. Bravo!"
-- Cory Doctorow / BoingBoing
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