no. 506
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White to play. This position is a variation from Carlsen-Wojtaszek, Vugar Gashimov Memorial, Shamkir 2018. How can White power through? Answers to me at The Spectator by Tuesday 22 May or via email to There is a prize of £20 for the first correct answer out of a hat. Please include a postal address and allow six weeks for prize delivery.

Last week’s solution 1 Nb5

Last week’s winner Gareth Davies, Newport, Wales