Happy Birthday Magnus Carlsen ...and still WC!

Magnus Carlsen celebrated his 26th birthday on November 30th by winning the four-game rapid tie-breaks over Sergei Karjakin in New York City, and so he retains his World Championship title. 

The position in the diagram is from game 4 of the Rapid tie-breaks. Karjakin had been forced to overpress as Black to win and tie the match. Here it is White to move. Can you find the way to end the match in style the way Magnus Carlsen did here as White?

Solution

Spoiler: Highlight to view
Magnus played: 49.Rc8+ Kh7 50.Qh6+!! 1-0, and the only move which doesn't lose.
Any capture on h6 allows a R mate next, so Karjakin resigned.


Photos from Magnus's career, including today's tie-break match and press conference and awards ceremony.
(click for full-size image)