In November 2013, Magnus Carlsen defeated Viswanathan Anand in the World Chess Championship 2013 in Chennai, India.
Did you know that he just turned 23 last November 30? Want to tweet him a belated Happy Birthday? His Twitter account is @MagnusCarlsen.
And now for our fifth question. Answer this correctly and get the chance to win an Opera goodie bag:
We have offices in three locations in Silicon Valley. What are these three locations?
(Hint: We blogged about this last October.)
Submit your answer.
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