Airplane trips can get awkward for linkurl:Thomas Snyder.; The 28-year-old Stanford linkurl:bioengineering; postdoc loves to bring along Sudoku puzzles as in-flight entertainment, but hates when the passenger next to him does the same. "When I'm next to someone with a puzzle book, I have this internal monologue: 'Should I go really fast, or solve more normally?'" It's a fair question for someone who can solve a Sudoku in 52 seconds.linkurl:Snyder; is the reigning linkurl:World Sudoku Champion.; This past April, he repeated his dominance in Goa, India after sweeping the 2007 competition in Prague. Last October, the young scientist also won the first national US Sudoku Championship, which came with a $10,000 prize - "The most I've ever gotten for solving one puzzle," he laughed. Add on three previous linkurl:US Puzzle Championships; (which involve a variety of math and logic puzzles in addition to Sudokus), and Snyder has quite the puzzle-solving...

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