Calabrese Countergambit

1.e4 e5 2.Bc4 f5

1. Introduction

This is an agressive answer when playing the Bishop's Opening (1.e4 e5 2.Bc4), in the line of the Latvian Gambit (1.e4 e5 2.Nf3 f5). In fact after 3.Nf3 it's one of the variations of the Latvian Gambit. With 2...f5 black is aiming to exploit white's choice to bring his bishop quickly into the game. Black seeks to play d5 and gain the centre with a tempo. But in my opinion ... it's just fun to play and mostly is will come as a big surprise for white.

2. Game analysis

Date: 2012.11.11
White: gavinw
Black: BigGStikman
WhiteElo: 1956
BlackElo: 1958
TimeControl: 1 in 3 days

1.e4 e5 2.Bc4 f5

Calabrese Countergambit (C23).

3.exf5

This is one of the many possibilities white can choose from. Some other continuations are: 3.d3, 3.Bxg8 3.d4 and 3.Nc3. You rarely come to see 3.Nf3 and make a crossover to the Latvian Gambit.

3...Nf6

To keep the white Queen from h5, take controle over the centre and preparing d5. The totally wild 3...Qg5 with an atack on the f5-pawn and g2-pawn doesn't work for black.

For example:

[A] 4.Nf3 Qxf5 (if 4...Qxg2 5.Rg1 Qh3 6.Nc3 or 6.Bf7+ and white is clearly better) 5.Nc3 Nf6 6.0-0 and white is better.

[B] 4.d4 Qxf5 (If Qxg2 5.Qh5+ Kd8 6.Qf3 and white is better.) 5.Nf3 Nc6 6.Nc3 and white is better.

[C] 4.g4 h5 5.d4 Qe7 6.dxe5 (6.g5 looks interesting.) Qxe5+ 7.Qe2 Qxe2+ 8.Nxe2 hxg4 and white is better.

4.d4

To consider is perhaps 4.g4 and a reversed King's Gambit is on the board. After 4...d5 5.Bb3 Bc5 (Interesting is: 5...h5 6.g5 Ne4 7.Nf3 Bc5 8.d4 exd4 9.Nxd4 Nc6 and black is slightly better.) 6.g5 Ne4 7.Qh5+ Ke7 8.Nf3 Bxf5 9.0-0 and it's about equal.

4...exd4 5.Qxd4 d5

Alternatives are: 5...Nc6 or 5...Be7, but I like my move better.

6.Bb3

Better is: 6.Qe3+ Be7 7.Bd3 0-0 8.Ne2 c5 9.Ng3 and it's about equal.

6...Nc6

An alternative is: 6...c5.

7.Ba4

Better and more interesting is: 7.Qd3 Qe7+ 8.Ne2 Bxf5 9.Qxf5 Qxe2+ 10.Kxe2 Nxd4+ 11.Kd1 Nxf5 12.Re1+ Kd7 and it's equal.

7...Bd6

Making castling kingside possible. To consider is: 7...Bxf5.

8.Nf3 0-0

At this point I think black is better.

9.Bxc6 bxc6 10.0-0 Bxf5 11.Qa4 Qd7

An alternative is: 11...c5.

12.c3

Perhaps 12.Re1 is better, as the pawn-move is hindering the development of the Knight on b1.

12...Ng4

Perhaps 12...Bg4 is better.

13.Bg5

Not good. White underestimates black's attacking power on the kingside. Better is: 13.h3 Ne5 14.Nxe5 Bxe5 15.Re1 Rae8 16.Be3 Bxh3 17.Nd2 (Taking with 17.gxh3 Qxh3 is deadly and game over) Rf6 18.Bg5 Rg6 19.Nf3 Bf6 20.Rxe8+ Qxe8 21.Re1 Qd7 and black is better.

13...Be4

All the black pieces are aiming at the white King and just waiting for the right moment to combine forces for an attack.

14.Nbd2 Bxf3

An alternative is: 14...Rxf3.

15.Nxf3

An alternative is: 15.gxf3.

15...Rxf3 16.gxf3 Nxh2 17.Kg2 Qf5 18.f4 Nxf1 19.Qxc6 Rf8 20.Kxf1

20...Qd3+

Not good. After 20...h6 21.Bh4 Qh3+ it's game over.

21.Kg1 h6 22.Bh4 Rxf4 23.Bg3 Rg4 24.Qe8+ Kh7 25.Qh5 Rg5 26.Qd1 Qxd1+ 27.Rxd1 Bxg3 28.fxg3 Rxg3+ 29.Kf2 Rg5

30.Rd4 c5 31.Ra4 Rf5+ 32.Kg2 Rf7 33.Ra5 Rc7 34.Ra6 d4 35.cxd4 cxd4 36.b3 d3 37.Rd6 Rc2+ 38.Kf3 d2 39.Ke2 Rxa2

White resigned.

0-1

3. Summery

The whole game black had the better play. The move 2...f5 enables black to attack on the f-file and in combination with both Bishops, a Knight and Queen it can result in a strong attack on white's kingside. Calabrese Countergambit is worth playing and can give you interesting games.

King's Gambit Declined, Norwalde Variation, Bücker Gambit

1.e4 e5 2.f4 Qf6 (3.Nc3 Qxf4 4.Nf3 Bb4 5.Bc4)

          >>

Position after 2...Qf6 (Norwalde Variation)              Position after 5.Bc4 (Bücker Gambit)

1. Introduction

It starts as a King's Gambit (1.e4 e5 2.f4), after black declines it with 2...Qf6. It was Stefan Bücker who analyzed this variation: the Norwalde Variation. The move 2...Qf6 is positional based. Black is defending the e5-square and attacking the pawn on f4. The idea is simple: black wants to take the pawn on f4 with the Queen and hold on to the pawn on e5.

What if we compair this to 2...exf4, we see that black accepts the gambit pawn on f4 and tries to hold on to it (often with 3...g5). The statistics are in favor for white (a little more than 55%). White lures black's king's pawn out of the centre to a square where black has difficulties to defend it (easily). In the Norwalde variation black's king's pawn is staying in the centre, frustrating the attack of white.

In this game white decided to develop with 3.Nc3, leaving the f4-pawn for black to take. And after 3...Qxf4 4.Nf3 Bb4, white choose for 5.Bc4 (Bücker Gambit) a sharp gambit in the style of the Muzio gambit where white sacrifices a piece for the attack. It resulted in a very lively and complicated game. Black had to play very accurate to survive.

2. Game analysis

Date: 2013.04.13

White: Bronstein_David5261

Black: BigGStikman

WhiteElo: 2025

BlackElo: 1985

TimeControl: 1 in 3 days

1.e4 e5 2.f4

King's Gambit.

2...Qf6

King's Gambit Declined, the Norwalde Variation (C30).

3.Nc3

An alternative is: 3.Nf3.

3...Qxf4 4.Nf3

An alternative is the Schubert variation: 4.d4. After 4...Qh4+ 5.g3 Qd8 6.dxe5 white has a small lead in development and spatial advantage. But the double pawns on the e-file are a target for black; the battle for e5.

4...Bb4

Attacking the white defences for the pawn on e4 and also preventing an immediately 5.d4.

5.Bc4

The Bücker Gambit; IMO the strongest response. It's in a Muzio Gambit style (what else can we expect from a King's Gambit player?)! The alternative 5.g3 Qg4 6.Nxe5 Qxd1+ 7.Nxd1 Nc6 isn't very dangerous for black.

5...Bxc3 6.0-0

Taking back on c3 is not good, it only gives away the e4-pawn. No, white sacrifices his Knight for an attack on the f-file. With the Bishop on c4, white is aiming for the f7-square. This is all what a gambit is about.

6...f6

The best defence. I think there is no time to retreat the dark square bishop on c3. For example:

[A] 6...Bb4 7.d4 Qxe4 8.Bxf7+ Kd8 9.c3 Be7 10.Nxe5 g5 (To keep the white Rook away from f4, trapping the black Queen) 11.Bb3 Nh6 12.Qh5 and white is clearly better.

[B] 6...Ba5 7.d4 Qxe4 8.Bxf7+ Kd8 9.Nxe5 Nf6 10.Bg5 Ke7 11.c3 d6 12.Re1 Qf5 13.Bxf6+ and white is clearly better. 

7.dxc3

White's dark square bishop is entering the game with a tempo.

7...Qg4

This is better than 7...Qxe4 8.Nxe5 fxe5 9.Qh5+ or 8...Qxe5 9.Re1 Qxe1+ 10.Qxe1+ or 8...Ne7 9.Re1 Qf5 10.Bd3 Qe6 11.Qh5+ g6 12.Bxg6 Nxg6 13.Nd3 and in every variation white is clearly better.

8.Bf7+

A well known motiv. White is trying to keep the black King as long as possible in the centre.

8...Ke7

Other continuations are not stronger. For example:

[A] 8...Kxf7 9.Nxe5! 

[B] 8...Kf8 9.h3 Qg3 10.Bxg8 Rxg8 (If 10...Kxg8 11.Qd5+ Kf8 12.Nxe5!) 11.Ng5 Qh4 12.Qf3 and white is clearly better.

[C] 8...Kd8 9.h3 Qg3 10.Ng5 fxg5 11.Qh5 (Planning 12.Bxg5 and 13.Rf3) Nf6 (If 11...Ne7 12.Bxg5 h6 13.Bg8 and white is better.) 12.Bxg5 (If 12.Rxf6 gxf6 13.Qh6 c5 14.Qxf6+ Kc7 15.Qxh8 and white is perhaps slightly better) h6 13.Bh4 Qe3+ 14.Kh1 and white is better.

9.h3

An alternative is 9.Qd5 c6 10.Qb3 Nh6 11.h3 Qg3 12.Bh5 (White's threatening 13.Bxh6 and 14.Qf7+.) Rf8 and white is slightly better.

9...Qg3

I like 9...Qxe4 less, because it opens files for white's attack; 10.Bxg8 Rxg8 11.Nxe5 d6 (If 11...fxe5 12.Re1 Qf5 13.Qd5 and white is clearly better.) 12.Re1 Qxe1+ 13.Qxe1 dxe5 14.Qe4 Nc6 15.Qxh7 Be6 and white is better.

10.Bxg8

Better is: 10.Ng5 Nh6 11.Rf3 (If 11.Qh5 d6 12.Bb3 Bd7 13.Rxf6 Be8 14.Qf3 Qxf3 15.Rxf3 and white is clearly better.) Qxf3 12.Qxf3 Nxf7 13.Nxf7 Kxf7 14.Bh6 Rf8 (If 14...gxh6 15.Rf1!) 15.Qh5+ Kg8 16.Qg4 Rf7 17.Rf1 and white is slightly better. 

10...Rxg8 11.Qd5 Rf8

Better is: 11.Re8.

12.Bd2

Better is: 12.Qc5+ Ke8 13 Qxc7.

12...d6

At this point the game is balanced IMO; perhaps black is slightly better as white doesn't have compensation for his pawn.

13.Be1 Qg6 14.Nh4 Qf7 15.Qd3 Nc6 16.Bd2 Be6 17.b3 Kd7 18.Rad1 Rad8

I think black is better now, but he has to break free to get out of his defence-mode.

19.Be3 Kc8 20.a4 d5

Black is trying to create open files for himself, to create spatial advantage.

21.exd5 Bxd5 22.Qxh7 Rh8 23.Qf5+ Be6

24.Qf2

Too bad that white miscalculated; white had to play 24.Rxd8+ first.

24...Rxd1 25.Rxd1 Qh5 26.Nf3 e4 27.g4

Not a good move in a bad position.

27...Bxg4

White resigned.

0-1

3. Summery

I think this game shows that 2...Qf6 in the King's Gambit is worth playing and can lead to very interesting games. The Norwalde Variation looks weird, but can get the job done. And in the Bücker Gambit you just have to play it very accurate as black!

Gibbins-Weidenhagen Gambit

1.d4 Nf6 2.g4

1. Introduction

It's also known as the Bronstein Gambit (A45) or Bullfrog Gambit. The opening  moves are 1.d4 Nf6 2.g4! The move 2.g4 tends to disrupt black's normal development. For example: if black declines the gambit with 2...d5 then 3.g5 can be very troublesome. In some lines white gets play on the half open g-file with Rg1. If black captures the g-pawn with 2...Nxg4 white picks up 2 tempi and a long lasting strategic attack. Like most other gambits white gets good control of the centre and a good development of his pieces. Black may have to defend throughout most of the game.

2. Game analysis

Date: 2013.03.15
White BigGStikman
Black: sonofacarpenter
WhiteElo: 1957
BlackElo: 1943
TimeControl: 1 in 3 days

1.d4 Nf6 2.g4

Gibbins-Weidenhagen Gambit (A45).

2...h6

Personally I think, if you want to prove that 2.g4 is wrong, than accept the gambit by playing 2...Nxg4. Now black is trying to prevent g4-g5, but 2...h6 doesn't stop this move. An interesting line is the Oshima Variation: 2...e5; black gambits his e5 pawn to get development and counterplay.

3.Nc3

A developing move and controling the centre. Defending the g4-pawn with 3.e3 or 3.h3 is too pasive. Why bother defending it, as you were giving it away on the second move.

3...d5

Black could accept the gambit by playing 3...Nxg4, but then his second move becomes rather weird.

4.g5

If black doesn't take the g4-pawn, white will push this pawn forward eventually.

4...hxg5

An alternative is 4...Ne4 5.Nxe4 dxe4 6.gxh6 gxh6 7.Bf4 Nc6 8.e3 and white is slightly better.

5.Bxg5 e6

An alternative is 5...Bf5 or perhaps 5...Ne4.

6.Qd2 Be7

Rather passive, perhaps better is 6...Bb4.

7.Bg2

Alternative moves are 7.Nf3 or 7.0-0-0.

7...Ng4

A strange move. Better was to develop the pieces on the queenside.

8.h4

Better is 8.Bxe7 Qxe7 9.Qf4 Nf6 10.0-0-0 and white is better.

8...Nh6

Again a strange move with the Knight. Perhaps better is 8...Nc6 9.Qf4 f5 10.Nb5 Bd6 11.Bxd8 Bxf4 12.Bxc7 Nxd4 13.Nxf4 Nxb5 14.Nf3 and white is better.

9.0-0-0 Nf5 10.Nf3

At this point white is fully developed; black's queenside is untouched.

10...Bxg5

Not good. Better is 10...Nc6 11.Rde1 b6 12.e4 dxe4 13.Rxe4 Bb7 14.d5 Bxg5 15.Nxg5 Nce7 16.Re5 and white is better.

11.hxg5 Rg8

12.Ne5

An alternative is 12.Qf4 Qd6 13.Ne5 f6 14.e4 dxe4 15.Nxe4 Qf8 16.Ng4 and white is clearly better.

12...Qe7

Better is 12...f6 13.e4 fxe5 14.exf5 exd4 15.Nb5 c6 16.Nxd4 e5 17.Rde1 and white is better.

13.Qf4

An alternative is 13.e4.

13...Na6

Developing the queenside (and protecting the c7-square), but it's too late. Perhaps 13...Nd7 is better.

14.Nxd5

Ofcourse 14.e4 dxe4 15.Bxe4 Nd6 16.Rde1 Nxe4 17.Nxe4 Bd7 18.d5 is perhaps better, but I liked this sacrifice.

14...exd5 15.Bxd5

Black resigned.

Possible continuations are:

15...Rf8 16.e4 Nb4 17.Bxf7+ Rxf7 18.Nxf7 Nxa2+ 19.Kb1 Qxf7 20.exf5 Bxf5 21.Qe5+ Kd7 22.Qb5+ Kd6 23.Qxb7 Re8 24.d5

 or

15...Nd6 16.g6 Rf8 17.gxf7 Nxf7 18.Ng6 Nh6 19.Nxf8 Qxf8 20.Qe4+ Qe7 21.Qg6+ Kd8 22.Rdg1 Nb4 23.Qxg7 Nxd5 24.Rxh6.

Both times white will win the game.

1-0

3. Summery

A perfect example what the Gibbins-Weidenhagen Gambit (Bullfrog Gambit) can achive.

Perhaps not always pretty, but it can be effective.

Bryntse Gambit

1.e4 c5 2.f4 d5 3.Nf3 dxe4 4.Ng5 Nf6 5.Bc4 Bg4

1. Introduction

It's a gambit you can get after:

• 1.e4 c5 2.f4 d5 3.Nf3 >> Sicilian Grand Prix Attack (B21)
• 1.f4 d5 2.Nf3 c5 3.e4 >> Bird's Opening (A03)

It's like a reversed Budapest Gambit where white has the extra f2-f4 move. And after 3...dxe4 white plays 4.Ng5. An alternative is 4.Ne5, the Faj(arowicz) Variation. You can compare it with the Budapest Gambit (1.d4 Nf6 2.c4 e5 3.dxe5 Ng4) versus the Fajarowicz Gambit (1.d4 Nf6 2.c4 e5 3.dxe5 Ne4). Personally I like 4.Ng5 better, but will certainly try 4.Ne5 sometime.

4...Nf6 5.Bc4 Bg4.

The alternative is the positional 5...e6. A safe continuation after 6.Nc3 whites wins back his pawn and has an equal game. With 5...Bg4 black is attacking the white Queen. White has to play 6.Be2 to avoid early material deficit. Furthermore white is making two moves with one piece in the opening. What black player can resist this temptation?

But ... white has the surprisingly 6.Qxg4! (Or first 6.Bxf7+ and then 7.Qxg4).

A list of relevant ideas for how to handle the white pieces is as follows:

1. Aim for active piece play. With only two pieces for the queen, white needs to get good coordination between his pieces.
2. Restrain Black’s Queen. The Queen must not be allowed to invade white’s position, and all potential points of entry must be covered.
3. Keep files closed. Open files tend to work to the advantage of Black’s Rooks and Queen. White is glad to open up diagonals.
4. Don’t cash in too early. White should resist the urge to chase an exchange or a pawn, if it will cost him tempi.

2. Game analysis

Date: 2012.12.04

White BigGStikman

Black: profor

WhiteElo: 1995

BlackElo: 1896

TimeControl: 1 in 3 days

1.e4 c5 2.f4 d5 3.Nf3 dxe4 4.Ng5 Nf6 5.Bc4 Bg4

Bryntse Gambit accepted.

6.Bxf7+ Kd7 7.Qxg4+

7.Nf7 doesn't bring white a material gain because of 7...Qd4 (threatening mate on f2) 8.Nxg4 Rg8.

7... Nxg4 8.Be6+ Kc7 9.Bxg4

The idea is that white will get two minor pieces for the Queen and a healty initiative.

9...Qe8 10.Ne6+

Pushing the black King further away, blocking the e-pawn and hindering black's development.

10...Kc6 11.Nc3

Just developing.

11... Qg6

An alternative was 11...Na6.

12.h3

Perhaps was 12.Ne8+ better!? 12...Kb6 13.Nd5+ Ka5 14.Be2 and black is in a lot of trouble! Also 12...Kd6 13.Nb5+ Kd5 14.Be6+ doesn't solve black's problems. The best continuation for black is 12...Kc7 13.Ne6+ and if black returns his King to the c6-square, it could be an early draw. But if Black wants to continue for a win, he probably plays 13...Kd6 14.h3 Na6 15.f5 and 16.Nxe4+.

12...Nd7

I believe 12...Na6 was a better move.

13.f5

The alternative was 13.d4 cxd4 14.Nxd4+ Kc7 15.Be3 but that didn't go well with idea numbers 2 and 3.

13...Qf7 14.Nxe4

The alternative was 14.d4 exd3 15.Bf3+ Kb6 16.Nd5+ Kc6 17.Ne3+ Kb6 18.Nc4+ Kb5 19.cxd3 and white takes the game home. After 14...cxd4 15.Nxd4+ Kc7 16.Nxe4 black has possibilities to develop.

14...h5 15.N4g5

When 15.Bf3 black has the oppertunity to play 15...Ne5 and creates an active piece in the centre of the board.

15...Qf6 16.Ne4

Another possibility was 16.Bf3+ Kb6 17.d3 Ne5 18.Be4.

16...Qe5 17.Bf3 Kb6

18.a4

Not good! At this point white had to play 18.d4! cxd4 19.Bf4 Qxf5 20.Bc7+ Ka6 21.Nxd4 Qg6 22.b4 and black has problems to defend his King.

18...a6 19.d4

One move too late; black has now an escape-square on a7.

19...cxd4

The losing move! Better was 19...Qxf5 20.dxc5+ Ka7 21.Be3 Kb8 22.Nd4.

20.Bf4 Qxf5

Not good! Black had to play 20...Qa5+ 21.b4 Qxb4+ 22.Bd2 Qb2 23.0-0 and could continue the game a little bit longer; now it's over.

21.Bc7+ Ka7 22.Nxd4

Black resigned. White threatens 23.Nb5+ axb5 24.axb5#

1-0

3. Summery

This gambit is not forced; and black has possibilities to transpose it into other openings or can choose for the safe 5...e6. But if black goes for 5...Bg4 you can be sure that you're playing an interesting game! White has the initiative in the game and is putting pressure on black. Black cannot do more than defending and trying to develop his pieces.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Arne Bryntse

The gambit appears to be the invention, in the 1960s, of a Swedish correspondence player: Arne Bryntse. Apparently, he even tempted opponents to accept the gambit by the use of conditional move offers, which were common in the postal chess era. In case his opponent might not see the point, when he posted the move 5.Bc4 he would add the conditional offer "if 5…Bg4 6.Qxg4." Good psychology! After that, fewer opponents would "chicken out" and prefer 5...e6. In the 1960s and early 1970s, Bryntse was a regular competitor in the Swedish correspondence chess championship, and he won the title in 1972. Bryntse played the Bird regularly but unfortunately few opponents played the necessary sequence that allowed him to offer the queen.

Two games from the master, Arne Bryntse, himself:

Game 1

Site: corr SWE/K

Date: 1968.??.??

White: Bryntse, Arne

Black: Österling, Gösta

1.f4 d5 2.Nf3 c5 3.e4 dxe4 4.Ng5 Nf6 5.Bc4 Bg4 6.Qxg4 Nxg4 7.Bxf7+ Kd7 8.Be6+ Kc6 9.Bxg4 e6 10.Nc3 Bd6

Three years later Österling played the improvement 10...Nd7 (see game 2).

11.O-O Rf8 12.d3 Na6

If 12...exd3 13.Nxe6 and 14.Bf3+

13.Nxe6 Qh4 14.Be2 Nb4 15.dxe4 a6

This prevents Nb5.

16.Bd1 Rf6 17.g3 Rg6

Black threatens to draw by perpetual check (18...Rxg3+), so Bryntse prevents that.

18.Kg2 Qe7 19.f5 Rxe6

Black must surrender the exchange one way or another (19...Rf6 20.Bg5).

20.fxe6 a5 21.a3 Na6 22.e5 Qxe6

22...Bxe5 could lead to a neat finish: 23.Rf7 Qxe6 24.Bf3+ Kb6 25.Rxb7#.

23.exd6 Kb6 24.Bf3 h6 25.Bf4 g5 26.Rae1 Qg6 27.Re7 Rb8 28.d7 Rd8 29.Be4 Qg8 30.Be5

1-0

Game 2

Site: corr SWE/K

Date: 1971.??.??

White: Bryntse, Arne

Black: Österling, Gösta

1.f4 d5 2.Nf3 c5 3.e4 dxe4 4.Ng5 Nf6 5.Bc4 Bg4 6.Qxg4 Nxg4 7.Bxf7+ Kd7 8.Be6+ Kc6 9.Bxg4 e6 10.Nc3 Nd7 11.Bxe6 Nf6 12.Nf7

Bryntse gives this a question mark but no further comment at this point.

12...Qe8 13.Bc4 a6 14.Nxh8 b5

White believed he would win a whole rook, but that is not the case. He now suffers a loss of momentum which is questionable in a sacrifical variation.

15.Bf7 Qc8 16.Nxe4 Nxe4

White can now obtain rook and bishop or two bishops for the Queen. The preferred option is the only line that gives white some chances.

17.Bh5 Qe6 18.Nf7 Kc7 19.Ne5 Qf5 20.Bf3 Re8 21.d3 Ng5 22.O-O Bd6 23.Bg4 Qf6 24.Bd2 h5

The initiative threatens to return to white, but this attempt by black is a failure.

25.Bxh5 Rh8 26.Bg4 Qh6 27.h3 Bxe5 28.fxg5 Qd6 29.Rae1 Bd4+ 30.Kh1 Rf8 31.Ba5+ Kb8 32.Rxf8+ Qxf8 33.Bf3 Qf7

White relies on the bishop-pair's strength on the long diagonals.

34.c3

34.Bc6 was tempting, but it is refuted by 34...Be5!

34...Bf2 35.g6

Black's move would have given him chances, if this reply had not existed.

35...Qxg6 36.Re7 Bg3 37.Rd7 Bh4

If 37...Kc8 38.Rd8# or 37...Bf4 38.Rd8+ Ka7 39.Ra8# or 37...Bc7 38.Bxc7+ Kc8 39.Re7 (or 39.Bg4).

38.Rb7+ Kc8 39.Rb6 Qxd3 40.Bg4+ Kc7 41.Rf6+ Kb8 42.Rf8+ Ka7 43.Bf3

1-0