Jerome Gambit: Ghosts of Moves Unplayed

Playing a 3-minute game often requires both players to put aside any thoughts of what moves they could have played, or should have mande, but didn't. With more time to reflect, such musings might help in forming future plans, but in blitz, they can haunt ongoing play.

BoomBoomTNT-YT - tyronev1
3 0 blitz, Chess.com, 2020

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ g6 7.Qxe5 

Now, Black can choose Blackburne's Defense, 7...d6, or Whistler's Defense, 7...Qe7 - both are complicated and dangerous - or amongst a handful of lesser lines, e.g. 7...Bd6.

7...Qe7 

8.Qd5+

We have recently taken a look at this infrequently- played move. See "Jerome Gambit: Largely Overlooked by History".

Recent alternatives:

8.Qxe7+ Kxe7 9.b3 a6 10.Bb2 Nf6 11.O-O Kf7 12.Nc3 Bd4 13.Rae1 Bxc3 14.Bxc3 d6 15.e5 dxe5 16.Bxe5 Rg8 17.Bxc7 Bg4 18.f3 Bh5 19.Bd6 Rad8 20.Bb4 g5 21.Re7+ Kg6 22.Rxb7 Rg7 23.Rb6 Rd4 24.Bc3 Rd8 25.Rxf6 checkmate, Ghigi,N - NN, 5 1 blitz, 2020;

8.Qxh8 Ke6 (8...Qxe4+ 9.Kd1 Qxg2 10.Qxh7+ Kf8 11.c3 Qxh1+ 12.Kc2 Qe4+ 13.d3 Qa4+ 14.b3 Qg4 15.Bh6+ Nxh6 16.Qxh6+ Kf7 17.Qh7+ Kf6 18.Nd2 Bxf2 19.Ne4+ Kf5 20.Qf7+ Ke5 21.Qf6+ Kd5 22.c4 checkmate, tomkoolen1996 - ThomasBovenkerk, 10 5 blitz, lichess.org, .com, 2020; or 8...Nf6 9.d3 b6 10.Bg5 Bd4 11.c3 Bb7 12.Bxf6 Bxf6 13.Qxh7+ Kf8 14.Qxe7+ Black resigned, Anonymous -Anonymous, 5 0 blitz, lichess.org, 2020) 9.Qxg8+ Kd6 10.Qd5 checkmate, decidueyemainbtw -MarcosEngenheiro, Chess.com 2020; and

8.Qf4+ Qf6 9.Qg3 Bd6 10.f4 Bxf4 11.Qb3+ Qe6 12.O-O Qxb3 13.Rxf4+ Kg7 14.axb3 d6 15.d4 Ne7 16.Nc3 Bd7 17.Be3 a6 18.Raf1 Rhe8 19.Rf7+ Kh8 20.Bg5 Nc6 21.Bf6+ Kg8 22.Rxd7 Black resigned, Wall,B - Guest744598, PlayChess.com, 2020.

8...Kg7

The text move looks a little bit better than 8...Kf8, which might place the King in the way of a Rook that wants to be developed, e.g. eronald - ayushsankar1006, 5 0 blitz, lichess.org, 2020 (0-1, 23). 

9.d4 Bb4+

Not quite as strong as 9...Bb6, levigun - obviously, 5d + 2d GameKnot.com, 2004, (0-1, 11) 

10.c3 Nf6 11.Qe5 

White has to be careful, with only one piece developed vs three, even with his strong pawn center. Fortunately, Black helps him out.

11...Qxe5 

Exchanging Queens in the Jerome Gambit if often a help to the defender. In this case - a 3-minute blitz game - Black has not looked deeply enough, however.

12.dxe5 Nxe4 13.cxb4 Re8 

14.Nc3 

A bit stronger was 14.0-0 Rxe5 15.Bf4 Re6 16.Bxc7. This possibility seems to haunt both player's thoughts during the next few moves, perhaps unconsciously.

14...Rxe5 15.O-O 

Of course, White can not now play 15.Bf4 Re6 16.Bxc7 because of 16...Nxc3+.

15...d5 16.Be3 

This is a solid move, although, again, 16.Bf4 was on.

16...c6

Black suddenly realizes that the 16.Bf4 skewer could win a pawn, so he moves that pawn to safety. But he overlooks something.

17.Bd4 

Black resigned

The Rook is a goner.

Jerome Gambit: Remain Vigilant

Sometimes the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) explodes decisively. Other times, White has to bide his time, waiting for a tactical opportunity. In the meantime, Black has so also remain vigilant, as a slip could prove fatal.

Such a slip occurred in the following game.

TheCuriousGreg - kibria77
15 10 bliz, Chess.com, 2020

1.e4 e5 2.Nf3 Nc6 3.Bc4 h6 4.Bxf7+ 

4...Kxf7 5.Nxe5+ 

Komodo 10 actually prefers 5.d4 here. A recent example:  5...Qf6 6.dxe5 Nxe5 7.Qd5+ Qe6 8.Nxe5+ Kf6 9.Qxe6+ Kxe6 10.Ng6 Bb4+ 11.c3 Bc5 12.Nxh8 Nf6 13.O-O b6 14.Ng6 Ba6 15.Re1 Ng4 16.Be3 Bd6 17.f3 Nf6 18.Nf4+ Ke5 19.g3 Nh7 20.Bd4 checkmate, TCNB - Kawllie, 3 0 blitz, lichess.org, 2020. 

5...Nxe5

An example of how Jerome-ing an opening can disturb the defender: 5...Ke8 6.Qh5+ Black resigned, Anonymous - Anonymous, Chess.com, 2020. 

6.d4 

Another example of how Jerome-ing an opening can disturb the defender: 6.Nc3 Bb4 7.Nd5 Bc5 8.d4 Black resigned, Anonymous-Anonymous, Chess.com, 2020) 

The main 6th move alternative has also seen a lot of play, recently, and is worth looking at, game-by-game: 6.Qh5+ Ke6 (6...Ng6 7.f4 [7.O-O Nf6 8.Qe2 d6 9.d4 Be7 10.e5 dxe511.dxe5 Nd5 12.Qf3+ Ke8 13.Nc3 Nxc3 14.bxc3 Be6 15.Qxb7 Nxe5 16.Bf4 Bc8 17.Qb5+ Bd7 18.Qxe5 Rg8 19.Rae1 Bc6 20.Rd1 Black resigned, aniketbhave - MoeHoward55, 10 0 blitz, Chess.com, 2020; 7.Qf5+ Nf6 8.e5 Nh4 9.Qf3 Nxf3+ White resigned, aniketbhave - ComplexRailway, 10 0 blitz, Chess.com, 2020; 7. d4 Nf6 8. Qf3 Kg8 9. e5 Nh7 10. Qd5 checkmate, Freitag - NN, 3 2 blitz, Chess.com, 2020] 7...Qh4+ 8.Qxh4 Nxh4 9.O-O Be7 10.b3 g5 11.fxg5+ Ke8 12.gxh6 Rxh6 13.d4 Rf6 14.Rxf6 Bxf6 15.Bb2 c5 16.e5 Bg7 17.dxc5 Nf5 18.Nd2 Nfe7 19.Nc4 Nc6 20.Re1 b5 21.Nd6+ Kd8 22.Re4 Nge7 23.Nf7+ Kc7 24.Bc1 Nxe5 25.Bf4 N7c6 26.Bxe5+ Bxe5 27.Nxe5 Nxe5 28.Rxe5 d6 29.cxd6+ Kxd6 30.Rxb5 Ba6 31.Rh5 Kc7 32.g4 Rg8 33.g5 Be2 34.Rh7+ Kb8 35.h4 Rg6 36.Rh8+ Kb7 37.Rh7+ Kb6 38.Rh6 Rc6 39.Rxc6+ Kxc6 40.g6 Ba6 41.Kf2 Bc8 42.Kf3 Be6 43.Kf4 Kd6 44.Kg5 Ke7 45.h5 Kf8 46.Kf6 Bg8 47.g7+ Ke8 48.h6 a6 49.c4 a5 50.Kg6 Ke7 51.h7 Bxh7+ 52.Kxh7 Black resigned, Barbarossa2000 - johnnytaylor7, 10 0 blitz, Chess.com, 2020; 6...g6 7.Qxe5 Bd6 [7...d6 8.Qxh8 Qe7 9.d3 Ke8 10.Qd4 c5 11.Qd5 Nf6 12.Qc4 Bd7 13.Nc3 Bc6 14.Bf4 Nd7 15.O-O-O Nb6 16.Qg8 Nd7 17.Bxh6 Nf6 18.Qxf8+ Qxf8 19.Bxf8 Kxf8 20.Rde1 Ng4 21.f3 Nf2 22.Rhf1 Nxd3+ 23.cxd3 b5 24.a3 b4 25.axb4 cxb4 26.Nd5 b3 27.e5 Ke8 28.Nc7+ Kd7 29.Nxa8 Bxa8 30.exd6 Kxd6 31.Re4 Bxe4 32.fxe4 a5 33.Rf3 Ke5 34.Kd2 Kd4 35.Rf6 a4 36.Rxg6 a3 37.Ra6 axb2 38.Rd6+ Kc5 39.Rd5+ Kb4 40.Rd4+ Kc5 41.Rd5+ K4 42.Rd4+ Kc5 43.Rd5+ draw, aniketbhave - Pknocks11, 10 0 blitz, Chess.com, 2020] 8.Qxh8 b6 [8...Qe7 9.Qd4 c5 10.Qc4+ Kf8 11.d3 Qf6 12.O-O h5 13.Re1 Nh6 14.Bxh6+ Ke7 15.Re3 Qe5 16.g3 Qxb2 17.e5 Qxa1 18.exd6+ Kxd6 19.Bf4+ Kc6 20.Qa4+ Kd5 21.Qb3+ Kc6 22.Be5 d6 23.Bxa1 Black resigned, aniketbhave - charlie385, 10 0 blitz, Chess.com, 2020] 9.Qh7+ Kf8 10.Qxg6 Bb7 11.f3 Ne7 12.Qxh6+ Kf7 13.Qe3 Bc5 14.Qe2 Qh8 15.c3 Ng6 16.g3 Ne5 17.d4 Nc6 18.dxc5 bxc5 19.Be3 d6 20.Qc4+ Ke7 21.b4 Ne5 22.Qb5 Rb8 23.O-O a6 24.Qa5 c6 25.bxc5 dxc5 26.Qc7+ Kf6 27.f4 Nd3 28.Rd1 Nb2 29.Rd6 checkmate dopstra - u3ao, 5 0 blitz, lichess.org, 2020; 6...Kf6 7.Qf5+ Ke7 8.Qxe5+ Kf7 9.d3 Bd6 10.Qd5+ Kf8 11.O-O Ne7 12.Qd4 c5 13.Qe3 Qc7 14.c4 Bxh2+ 15.Kh1 Bf4 16.Qxf4+ Qxf4 17.Bxf4 g5 18.Bd6 Ke8 19.Bxc5 b6 20.Bd4 h5 21.Bxh8 Black resigned, aniketbhave - danatherton2000, 10 0 blitz, Chess.com 2020) 7.Qf5+ Kd6 8.d4 Nc6 9.Bf4+ Ke7 10.Nc3 (10.Qc5+ d6 11.Qd5 Ke8 12.Qh5+ Kd7 13.Qf7+ Qe7 14.Qf5+ Kd8 15.Qh5 Qxe4+ 16.Be3 Qxg2 17.Qh4+ Be7 18.Qg3 Qxh1+ 19.Ke2 Bg5 20.f4 Bf6 21.d5 Nd4+ 22.Kd3 Qd1+ 23.Bd2 Qxc2+ 24.Ke3 Nf5+ White resigned, aniketbhave - Lucasrapun, 10 0 blitz, Chess.com,  2020) 10... d6 11.Nd5+ Ke8 12.Qg6+ Kd7 13.Qf7+ Nge7 14.e5 dxe5 15.dxe5 Qe8 16.e6+ Kd8 17.Bxc7 checkmate, lakapburak - pxj923, 3 2 blitz, lichess.org,  2020 

6...Ng6 7.f4 

White has also tried 7.Nc3 Bb4 8.O-O Bxc3 9.bxc3 d6 10.Qh5 Nf6 11.Qf3 Kg8 12.e5 dxe5 13.Qg3 Bf5 14.dxe5 Nh7 15.Ba3 Ng5 16.f4 Ne4 17.Qe3 Kh7 18.g4 Qd7 19.Rad1 Qe6 20.gxf5 Qxf5 21.Kh1 Rad8 22.Rde1 Nd2 23.Rf2 Nc4 24.Qc5 Ncxe5 25.Qxe5 Nxe5 White resigned, TheCuriousGreg - luiseduardomunoz1058, 10 0 blitz, Chess.com, 2020.

7...d5 8.e5 Bf5 9.O-O Bb4 

To keep White's Rook off of e1, but it allows the pawns to start rolling. 

10.g4 Be4 11.f5 Nh4 12.c3 Be7 13.Nd2 Bd3 14.Rf2 c5 15.Nf3 Be4 

Black still has control of things, but he has to remain vigilant.

16.e6+ Kf8 17.Ne5 Rh7 

Well, yes, White was threatening the Knight fork at g6...

18.Ng6+

If this were not a blitz game, White would probably have found 18.Nd7+ Ke8 19.Qa4!? Nf6 20.Nxf6+ Kf8 21.Nxh7+ Kg8 22.Bxh6+!? Kxh7 23.Be3 when he would have a Rook and 3 pawns for a Bishop and a Knight, which would be about equal in the middlegame (and maybe a slight bit better in an ending).

18...Ke8 

Black avoids the messy alternative, 18...Nxg6 19.fxg6+ Nf6 20.gxh7+ Bxh7 21.g5 hxg5 22.Qh5, but stumbles into checkmate from the other wing.

19.Qa4+ b5 20.Qxb5+ Black resigned

20...Qd7 21.Qxd7 checkmate is too painful to allow on the board.

graphic by Jeff Bucchino, "The Wizard of Draws"

Jerome Gambit: Active and Passive Sacrifices

The Jerome Gambit is based upon active sacrifices: 4.Bxf7+ and 5.Nxe5+. The attacker practically throws his pieces at the defender.

The following game also contains a passive Queen sacrifice: White places Her Majesty where she can be attacked, and then he just leaves her there. Black might as well capture, as the alternative is to let a pawn advance and promote to another Queen.

TheCuriousGreg - MIN_0
15 0 blitz, Chess.com, 2020

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6. Qh5+ Ng6 

7.Qd5+ Ke8 8.Qxc5 d6 9.Qe3 N8e7 

10.f4 Rf8 11.O-O Kf7 

Black is thinking about castling-by-hand, always a prudent response to the Jerome Gambit.

Less accurate is 11...Bd7, as seen recently in the uneven game that continued 12.d4 c6 13.Nc3 Qb6 14.Bd2 Kd8 15.a4 c5 16.dxc5 Qxc5 17.Qxc5 dxc5 18.Nb5 Bxb5 19.axb5 b6 20.Rad1 Kc7 21.f5 Nh8 22.Bf4+ Kb7  23.Rd7+ Kc8 24.Rxe7 Kd8 25.Rxg7 Black resigned, pupuvi - DeschainPK, 10 0 blitz, lichess.org, 2020.

12.f5 Ne5 13.Qb3+ 

Pausing to chase the enemy King away from safety.

13...Ke8 14.d4 N5c6 15.Qd3 Bd7 

A curious Jerome Gambit position! White, the gambiteer, has only 2 pieces developed to Black's 4. The material balance still favors the defender, who has a piece for 2 pawns. There is the matter of Black's King stuck in the middle of the board, however.

If White believes he has the advantage (and I believe he does), it's time for him to show it.

16.Bg5 h6 17.Bh4 g5 

This move is risky. It turns White's f-pawn into a protected passer. Worse, it allows White to open up the Kingside by capturing enpassant.

18.fxg6 Qc8 19.Rxf8+ Kxf8 20.Qf3+ Ke8 

The ugly alternative was 20...Bf5 21.Bxe7+ Nxe7 22.g4 Qe6 23.gxf5, when White's extra, avanced, pawns will prove decisive.

21.Qf7+ Kd8 22.d5 Be8 23.dxc6 

Funny. White can offer up his Queen. He can get another.

23...Bxf7 24.gxf7 Black resigned

Jerome Gambit: Hunter's Lament

In Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) games, it seems that victory for the attacker turns on a few things happening, while defeat turns on a few things not happening. In a 5-minute game, sometimes that works out, and sometimes it doesn't. But - the games are always exciting.

ratconspiracy - titulajebordo
5 0 blitz, Chess.com, 2020

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ng6 

7.Qd5+ Ke8 8.Qxc5 d6 9.Qe3 Qe7

10.d4

About equal to the text are:

10.O-O Nf6 11.Nc3 Kf7 12.f4 Re8 13.d3 b6 14.b3 Bb7 15.Ba3 Qd7 16.Rae1 Kg8 17.Qg3 c5 18.Bb2 Rad8 19.f5 Ne5 20.Ne2 Qf7 21.Nf4 Bc8 22.h3 Nh5 23.Nxh5 Qxh5 24.Rf4 Qf7 25.Rh4 Bb7 26.Rf1 Qf6 27.Rhf4 Rc8 28.Rg4 Re7 29.Bxe5 dxe5 30.Rg5 h6 31.Rg6 Qf7 32.Rxh6 Rd8 33.Rg6 Red7 34.h4 Rd6 35.h5 Rxg6 36.hxg6 Qf6 37.Qg4 Qd6 38.g3 Qd7 39.Kg2 Qe7 40.Rh1 White won on time, angelcamina - RomainTristan, 1 0 bullet, lichess.org, 2020;

10.Nc3 c6 11.d4 Nf6 12.O-O Kf7 13.f4 Ng4 (13...Re8 14.f5 Nf8 15.Qf3 Kg8 16.Re1 h6 17.Bf4 N8h7 18.h4 Bd7 19.Bg3 Rad8 20.e5 Nd5 21.Ne4 dxe5 22.dxe5 Rf8 23.Nd6 g5 24.Rad1 gxh4 25.f6 Qe6 26.Bxh4 Ng5 27.Qh5 Qg4 28.Qg6+ Black resigned, Anonymous - Anonymous, 3 0 bltiz, lichess.org, 2020) 14.Qf3 d5 15.f5 dxe4 16.Qxg4 Nf8 17.Nxe4 h5 18.Qf4 Nd7 19.Ng5+ Kg8 20.Bd2 Nb6 21.Rae1 Qf6 22.Re8+ Qf8 23.Rxf8+ Kxf8 24.Qd6+ Kg8 25.Qd8# ChessBrah - samuelwillwin, 3 0 blitz, Chess.com, 2020;

10.d3 Nf6 11.O-O Ng4 12.Qe2 Nh4 13.Nc3 Be6 14.f4 g6 15.h3 Nh6 16. f5 N6xf5 17.exf5 gxf5 18.Re1 K7 19.Nd5 Qd7 20.Nxc7 Black resigned, Wall,B - Guest701131, PlayChess.com, 2019

10...Nf6 11.Nc3 a6 12.O-O Ng4 

The Knight's attack on the Queen should serve no purpose. For example, if now 13.Qd3 Qh4 14.h3 and it will have to move.

13.Qg5 Qxg5 14.Bxg5 h6 15.Be3 Nxe3 16.fxe3 Ne7 

White has 2 pawns for his sacrificed piece, but they are not mobile. The exchange of Queens has taken the life out of his attack, as well. It will take some pluck and some luck to make progress.

17.Nd5 Nxd5 18.exd5 Bg4 19.e4 Rf8 20.e5 Rxf1+ 21.Rxf1 Ke7 22.e6 Rf8 

The protected, passed pawn is something of value, but for now it is effectively blockaded. If there were an attack on the tied-down King, White might be able to make something of the position. In the meantime, too many pawns are stuck on the same colored squares as the Bishop.

23.c4 Rxf1+ 24.Kxf1 Bf5 25.c5 Be4 26.c6 bxc6 27.dxc6 Bxc6 28.Ke2 Kxe6 29.Kd3 Bxg2 30.Kc4 c6 

Black is clearly better. But, is time on his side?

31.b4 Bd5+ 32.Kc3 g5 33.a4 h5 34.b5 axb5 35.axb5 cxb5 36.Kb4 Bc4 

37.Ka5 g4 38.Kb6 h4 39.Kc7 g3 40.hxg3 hxg3 41.Kc6 g2 42.d5+ Bxd5+ 43.Kxb5 g1=Q 

44.Ka6 Qb1 45.Ka7 Bh1 46.Ka6 d5 47.Ka5 d4 48.Ka4 d3 49.Ka3 d2 50.Ka4 d1=R 51.Ka5 Rd8 52.Ka6 Ra8 checkmate

A tough fight. Remember the hunter's lament: Sometimes you get the bear, and sometimes the bear gets you.


graphic by Jeff Bucchino, "The Wizard of Draws"

Jerome Gambit: Positional Cues

Sometimes, while playing the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+), we can take a cue from our opponent as to which move to make or which plan to follow. See the following game.

SuperChinese - Zakir292
5 0 blitz, lichess.org, 2020

1. e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ng6

7.Qd5+ Ke8 8.Qxc5 d6 9.Qe3 Nf6 10.O-O Be6

Cue #1: With a Knight on g6, this Bishop move should prompt a standard response from White.

11.f4 Bc4 12.d3 Qe7 

Black's idea reminds me of the Calvin and Hobbes book, Scientific Progress Goes "Boink" - Black follows the "scientific" idea of returning sacrificed material in order to break White's attack. However, he overlooks cue #2: his King and Queen will soon be on an opened file.

13.dxc4 Nxe4 

He could have tried 13...Kf7, to limit the damage.

14.Re1 Nc5

This might have been the move that Black had been counting on. In a 5-minute game, sometimes analysis does not go deep enough.

15.Qf2 Ne4 16.Qf3 

16...Ne5 17.Qxe4 Rf8 18.fxe5 Qf7 19.exd6+ 

White is a couple of pieces and a couple of pawns ahead. All he has to do is make sure he doesn't get checkmated, and he has the win.

19...Kd8 20.Qe7+ 

The simplest. Now 20...Qxe7 21.dxe7+ Kd7 22.exf8/Q+ Rxf8 would be quite enough. Instead, Black allows checkmate directly.

20...Kc8 21.d7+ Kb8 22.Qxf8+ Qxf8 23.Re8+ Black resigned 

Black takes his cue. The finish would be 23...Qxe8 24.dxe8 checkmate. Ouch!

Jerome Gambit: Amusement

From the pages of the Cincinnati Commercial Gazette, June 18, 1881

A letter received from Mr. A. W. Jerome calls attention to the fact that he does not claim the Jerome Gambit to be analytically sound, but only that over the board it is sound enough to afforda vast amount of amusement.

Sometimes, White is amused. Sometimes, Black is.

There is a lesson there, somewhere.


DeathStroke97 - lunareclipse777
15 10 blitz, Chess.com, 2020

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 

Black's move is strong - if he knows some of the refutations of the Jerome.

Black's move is weak - if he is merely trying to hold onto all of the sacrificed material.

7.Qf5+ Kd6 8.f4 Qh4+ 

Often Black plays 8...Qf6. Is the text move, instead, just an annoying check before the Queen moves to f6? Or - is there something more?

9.g3 Nf3+

Wow.

This move goes back to a fictional game presented in the American Chess Magazine, June, 1899, which lampooned the recent introduction of chess-by-telephone.

Such a move is also a strong indication the Black knows something about the Jerome Gambit, and has decided to launch a strong counter-attack. The line is complicated - The Database shows White winning 29 games, losing 21, and drawing 3 - but "objectively" dangerous for the first player.

10.Ke2 

White needed to play 10.Kf1, or at least 10.Kd1. It is not enough to rely upon his first impression that the Queens will be exchanged.

10...Nd4+

White resigned


After 11.Kd1 Nxf5 12.gxh4 Nxh4 it is true that the Queens have come off of the board - but Black remains 2 pieces ahead.