It’s Your Move: daily chess puzzle #263

White to play and win

evaluate 1…g5 2 Rh6 Kg7

Fischer v Gligoric, Rovinj-Zagreb 1970

Solution

Black’s defence looks solid, until you examine all biffs and consider 1 Rf6!!

Then if 1…Kf6, 2 Bg5+ skewers King and Queen, whilst 1…Qf6 is met by Nh5+ with a fork.