1.d4 d5 2.Nf3 Nf6 3.e3 c5 4.c3 e6 5.Bd3 Bd6 6.Nbd2 Nbd7 7.0-0 0-0 8.Re1 Re8 9.e4 dxe4 10.Nxe4 Nxe4 11.Bxe4 cxd4
Here this sacrifice does not quite work, but it is not a losing move, as was believed by Vukovich, who analysed Greco's Sacrifice in great detail.
12...Kxh7 13.Ng5+ Kg6
[Black could have saved the game by playing
13...Kg8 14.Qh5 Ne5!
(14...Nf6 15.Qxf7+ Kh8 16.Re4!+-
; 14...Qf6 15.Qh7+ Kf8 16.Ne4 Qe5 17.f4 Qd5 18.c4 Qc6 19.Qh8+ Ke7 20.Qxg7 with attack.)
15.Rxe5 Bxe5 16.Qxf7+=
and White has to settle for a perpetual check. ]
A mistake, but Black was in trouble already even after the best reply - 14...f5, as my analysis shows:
[14...f5 15.h5+ Kf6 16.Qxd4+ Be5 17.Qh4!
and Black cannot survive with his king exposed in the centre.]
17.Rxd6 Qa5 18.Nxf7+ Kh7 19.Ng5+ Kg8