Daily chess puzzle

Today’s puzzle was prepared whilst travelling, so is in a different format from those published when at home.

White to play and win

Aronian v Dubov, FIDE World Cup, Tbilisi, September 2017

Solution

The culmination of a wonderful endgame by Levon.

1 Re4+! Ke4[] 2 Kg6! 1-0, since 2…Kf4[] 3 Kh5 wins the pawn, and in a way that the g pawn queens.