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The Guardian - UK

Science

Alex Bellos

Did you solve it? Are you a match for the world’s smartest teen?

Alex Chui — Alex Chui Photograph: Alex Chui

Earlier today I set you the following puzzle, suggested by Briton Alex Chui, the most successful ever candidate at the International Mathematical Olympiad.

Last month Alex, who is a pupil at Tonbridge School in Kent, became the first person to win a medal at the olympiad for seven years in a row. Bravo!

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