this above is a position from a Capablanca game in which it is white to move and here Capablanca found a brilliant way to win-sure the move 1 f4 looks promising but there is another way to win. for the answer click here..answer= 1 Nh6+!! Kh8 2 Qxe5!! Qxe5 3 Nxf7+ Rxf7 (3...Kg8 4 Nxe5) 4 Rd8 Rf8 5 Rxf8#