SA3OD - gianluca
classic, InstantChess.com, 2016
1.e4 e5 2.Nf3 Nc6 3.Bc4 h6
The Semi-Italian Opening.
4.d4 exd4 5.Nxd4 Bc5
Asking for trouble, allowing a transposition to the Semi-Italian Jerome Gambit.
I know this sounds silly, but there are 30 games with this position in The Database. White scores 48%. (Which sounds even sillier.)
A thoughtful idea, although stronger was 7.Nxc6!? Qh4!? 8.O-O bxc6 9.Bb3 Qxe4 when White has recovered his sacrificed piece, as a better pawn structure and a safer King.
7...Kxf7 8.Qd5+ Kf8
Instead, 8...Kf6 would be too bold: 9.Qxc5 Nge7 10.Nc3 (10.Qc3+!) 10...d6 11.Nd5+ Nxd5 12.Qxd5 Re8 13.O-O Re5 14.Qd3 Bxf5 15.exf5 Rxf5 16.b3 Kg6 $2 17.Bb2 (17.g4!) 17...Ne5 18.Bxe5 dxe5 19.Qb5 b6 20.Rad1 Qe7 21.Rd7 Qg5 22.Rxc7 (22.Qc6+!?) 22...Raf8 23.Qe2 e4 24.Qxe4 Kh7 25.Rxa7 Kh8 26.Re7 Rxf2 27.Rxf2 Qc5 28.Ref7 Rxf7 29.Qe8+ Rf8 30.Qxf8+Qxf8 31.Rxf8+ Kh7 32.Rb8 Black resigned, MidKnightBlue - cesrmathurine, FICS, 2005.
9.Qxc5+ d6 10.Qc3 Bxf5 11.exf5 Nf6
White has an extra pawn (temporarily) and a safer King, but he lags in development.
12.O-O Ne7 13.Nd2 Nxf5 14.Nf3 Kf7 15.Qb3+ Kg6
The King needed to go back to f8, as SA3OD immediatly shows.
16.Qd3 Qd7 17.Nh4+ Kf7 18.Qxf5 Qxf5 19.Nxf5 Rhe8
In the next few moves, White is thinking of attack. (Instead, he should heed American National Master Dan Heisman's advice to club players, that after winning material one should think about consolidation first, not wild aggression. The simple 20.Be3 comes to mind.)
Instead, the consolidating 21.Ne3! would have saved a world of headaches.
Everybody is going to the party, but, by the time they get there, the party will have moved on.
White still had time for 22.Ne3, evicting the enemy Rook. Even 22.Be3 was possible, as 22...Rxb2?! would be well met by 23.Rac1!? with counterplay.
22...Re8 23.g5 Ree2
The correct way to protect g2 (and attack Black's Rook) was 24.Ne3!
Instead, 25.Rf3 would have kept the enemy Knight out of g3 and lead to an even game.
Better to invade: 25...Ng3.
Still attacking. Still overlooking 26.Rf3.
Black overlooks his last chance for 26...Ng3.
White is in a turned-around situation for a Jerome Gambit player, being up a piece and down a pawn. His King is in more danger, too.
Although Black has more practical chances, the game is still about even.
27.Bf4 Rxb2 28.Ng6 Rxa2 29.Rxa2 Rxa2 30.Re1 Ra4
Not the solution to a difficult position, especially if time was getting short. Stockfish 7 suggests: 31.Kg2 Kf6 32.Kf3 Ng5+ 33.Bxg5+ Kxg5 34.h4+ Kxf5 35.Ne7+ Kf6 36.Nd5+ Kg7 37.Re7+ Kg6 38.Rxc7 b5 39.Nf4+ Kf5 40.Nxh5 Rxh4 41.Ng3+ Ke5 42.Rxa7 and White should hold on. Whew!
Now Black's game improves step-by-step.
31...Kf6 32.h4 Kxf5 33.Bg5 Nxg5 34.hxg5 Kxg5
35.Nf7+ Kg6 36.Nd8 b6 37.Ne6 c5 38.Rd1 Rg4+ 39.Kh2 c4
40.Rxd6 Kf7 41.Nc7 Rg5 42.Rc6 Rc5 43.Rh6 Kg7 44.Re6 Rxc7 45.Kg2 b5 46.Kf2 b4 47.Ke3 b3 48.Ra6 b2 49.Ra5 b1=Q 50.Rxh5 c3 51.Rg5+ Kh6 52.Rd5 c2 53.Rd6+ Kh7 54.Kd4 Qd1+ 55.Ke5 Qxd6+ 56.Kxd6 c1=Q 57.Kd5 Rd7+ 58.Ke6 Rd2 59.Ke5 Qe1+ 60.Kf4 Rf2+ 61.Kg3 Qg1+ 62.Kh3 Rh2 checkmate