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References
- 1 2 3 Lisa Fernandez (May 9, 2008). "Solving puzzles is in sudoku champ's genes". San Jose Mercury News .
- ↑ "The Art of Puzzles". Archived from the original on February 3, 2011. Retrieved November 23, 2010.
- 1 2 "motris - User Profile". Archived from the original on August 22, 2011. Retrieved November 23, 2010.
- ↑ "About Thomas Snyder". Retrieved August 13, 2013.
- ↑ "Welcome to Grandmaster Puzzles!" Retrieved August 13, 2013.
- 1 2 "worldpuzzle.org" . Retrieved November 11, 2018.
- ↑ "Meet the official sudoku champ". Chicago Tribune . October 22, 2007. p. 10.
- ↑ "wpc.puzzles.com" . Retrieved August 24, 2018.
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