This month's competition is to win two tickets for the Caravaggio: The Final Years Exhibition at the National Gallery.
The exhibition runs until 22nd May 2005.
The competition closes on 10th April 2005 and the winner will be randomly drawn from all correct entries.
The winner will be notified by email and can attend the exhibition on any date until 15th May.
Answer: 1610 http://www.1st4londontheatre.co.uk/competition/