The commentaries on chess.com and the Chessbase website reported on Carlsen's second loss in a row but did not explain why Radjabov played 10...Qe8! which avoids a potential bishop sacrifice on h5. My good friend, CM Olimpiu Urcan made this point on the Twitter chat so I decided to have a go at it minutes after the Carlsen-Radjabov game ended.
So there you have it. 10...Qe8! sidesteps the bishop sacrifice which if accepted, forces Black into a pin-bind.
Author of The Benko Gambit: Move by Move (Everyman Chess 2014).