Tuesday, May 7, 2024

Blackmar-Diemer Gambit Bogoljubow

The Blackmar-Diemer Gambit Bogoljubow variation 5.Nxf3 g6 resembles the Grunfeld Defence. The main difference is that White has an open f-file and Black has an extra pawn. Ultimately, White looks to attack points near the king such as f7 and h7. Usually, Black will pressure the d4 pawn. I used to be an avid Gruenfeld player. Thus, when I first faced a BDG in December 1980, I played 5...g6. Although I won that game as Black, I realized that if my opponent Glenn Snyder had put more pressure on me, I might have been in trouble. Years later, remembering that game, I started playing the BDG as White!

My latest chess book is Checkmate the Bot: Tips for Outplaying Chess Engines

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 g6


6.Bc4 to aim at f7 is the traditional main line. First, we consider 6.Bd3 and 6.Bf4.

6.Bd3 Bg7 7.0–0 0–0 8.Qe1 Nc6 9.Qh4 and now:

9...Nb4 

10.Bh6 Nxd3 11.cxd3 Ng4 12.Bxg7 Kxg7= although 1–0 in 21. Christensen - Bogumil, chess.com 2021

9...Bg4 

10.Ne2 Bxf3 11.Rxf3 e5 12.Bg5 e4 13.Rxf6 exd3 14.Rxc6 Qd7 and 0–1 in 42. Christensen - Robles Aguilar, chess.com 2021

6.Bf4 Bg7 7.Qd2 0–0 8.0–0–0 [the long Bogo] and now:

8...Bg4 

9.Be2 c6 10.h3 Bxf3 11.Bxf3 e6 12.g4= and 1–0 in 33. Arslanov - Korley, chess.com 2024

8...Nd5 

9.Be5 Nxc3 10.Qxc3 Nd7 11.Bxg7 Kxg7 12.g4 Nf6 13.g5 Nd5 Black stands a little better but 1–0 in 34. Arslanov - Silva Lucena, chess.com 2024

 6.Bc4 Bg7 [the main line]

6...e6 

7.0–0 Bg7 8.Bg5 h6 9.Bxf6 Bxf6 10.Ne4 Bg7 11.Ne5 0–0= and 1–0 in 40. Palczert - Jaque Gutierrez, chess.com 2024]

7.0–0 [the short Bogo]. Alternatives are 7.h4 and 7.Bg5.

7.h4 0–0 8.h5 

8...Bg4 (8...Nxh5!?) 9.hxg6 hxg6 10.Bh6 Bxh6 11.Rxh6 Kg7 12.Qd2 Bxf3 13.gxf3 Nc6 14.0–0–0 Qxd4 and 0–1 in 22. Arslanov - Davidson, chess.com 2023

7.Bg5 0–0 8.Qd2 

8...Bg4 9.Ne5 Bf5 10.0–0–0 Nbd7 11.Qe2= and 1–0 in 27. Pert - Smietanska, chess.com 2023

7...0–0 8.Bg5 [Alternatives are 8.Ne5 and 8.Qe1]

8.Ne5 Nc6 9.Nxc6 bxc6 

10.h3 Nd5 11.Ne2 Be6 12.Bb3 ½–½ Mordiglia - Kirszenberg, Acqui Terme ITA 2023

8.Qe1 Bg4 9.Qh4 Nc6 

10.Ne2 Qd7 11.h3 (11.c3!?) 11...Bxf3 12.Rxf3 Rad8 13.c3 Na5 14.Bd3 c5 15.dxc5 Nc6 and ½–½ in 47. Arslanov - Kolmagorov, chess.com 2024]

8...c6

8...c5 

9.d5 (If 9.dxc5 Qa5 10.Qe2=) 9...Bg4 10.Qd2 (Or 10.h3 Bxf3 11.Qxf3=) 10...Bxf3 11.Rxf3 Nbd7 12.Re1= and 0–1 in 49.) Karapetyan - Samusenko, Sochi RUS 2021

9.Qd2 b5 10.Bb3 a5 11.a4 b4 12.Ne2 Re8 13.Bh6 Bh8 14.Bxf7+?! [14.Ne5! favors White.]

14...Kxf7 15.Ne5+ Kg8 16.c3 c5 17.Qg5 Ba6? [17...Ne4! 18.Qf4 Bf5 favors Black.]

18.Nxg6! Qd5 19.Ne5+ [with mate next move. 1–0 Helin - Fantini, lichess.org 2021] 1–0

For an expanded look at the 50 games (105 diagrams) I did last year, see my new book Chess Chronicles: Blackmar-Diemer Gambit and Other Chess Games

Below are my Blackmar-Diemer Gambit ebook collections.
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Sunday, April 7, 2024

BDG Lemberger Counter Attack

The Lemberger Counter Attack is a promising choice if Black does not want to accept the Blackmar-Diemer Gambit. After 1.d4 d5 2.e4 dxe4 3.Nc3, instead of the normal BDG 3…Nf6 4.f3, Black offers an e-pawn with 3…e5. My favorite continuation is 4.Nge2. I've written about this variation in several of my books. Here are some other recent choices.

1.d4 d5 2.e4 dxe4 3.Nc3 e5
The main line in this post is 4.Qh5. First, let's consider alternatives.

4.dxe5 Qxd1+ 5.Kxd1 Bf5 6.Bf4 Nd7 7.Nge2 0–0–0
8.Ke1 Bb4 9.a3 Bxc3+ 10.Nxc3 Ne7 11.Bc4 Ng6 12.Bg5= and 1–0 in 24. Palczert - Reprintsev, chess.com 2024

4.Bc4 Nf6 (4...Qxd4!) 5.Nge2 (5.dxe5=) 5...exd4
6.Nxd4 (6.Qxd4 Qxd4 7.Nxd4=) 6...Bc5 7.Be3 0–0 8.0–0 Ng4 (Better is 8...Bg4) 9.h3 Nxe3 10.fxe3 Nc6 11.Nxe4= and ½–½ in 31. Capp -Jorquera, chess.com 2022

4.Nxe4 (Diemer's favorite choice.) and now:

4...Nf6 5.Bg5 Be7 6.Bxf6 gxf6 7.Nf3
7...Nc6 (7...f5=) 8.Bb5 Bd7 9.d5!? Nb4 10.Bxd7+ Qxd7 11.c4= but 0–1 in 58. Terrieux - Sztokbant, chess.com 2022

4...Qxd4 5.Bd3 Nc6 6.Nf3 Qb6 7.0–0
7...Bg4 (7...f5!?=) 8.Be3 Qa5 9.a3 0–0–0= and 0–1 in 57. Christensen - Erden, chess.com 2021

4.d5 and now:

4...f5 5.g4 Nf6 6.gxf5 Bxf5 7.Bg5 Be7
8.Qd2 (8.Bh3!?) 8...Nbd7 9.0–0–0 0–0 and 0–1 in 29. Skiadopoulos - Mayaud, chess.com 2023

4...Nf6 and now:

5.a3 Bc5 6.Bg5
6...Bb6 (6...Bf5 seems to favor Black.) 7.Qd2 h6 8.Bxf6 Qxf6 9.Nxe4 Qg6 10.Ng3 0–0 11.0–0–0 f5= and 0–1 in 28. Golubka - Alekseenko, lichess.org 2021

5.Bg5 Bb4 6.Bb5+ Bd7 7.Qe2 Bxc3+ 8.bxc3 0–0
9.Bxd7 Nbxd7 10.c4 h6 11.Bh4 c6 favors Black, and 0–1 in 27. Donatti - Novak, chess.com 2023

5.Bc4 c6 6.Nge2 (6.Bg5!?) 6...cxd5 7.Nxd5 Nc6 8.0–0 Be6 9.Nec3
9...h6 10.Nxf6+ Qxf6 11.Nxe4 Qg6 12.Bxe6 Qxe6 13.c3= and 1–0 in 62. Janaszak - Alahakoon, chess.com 2021

4.Qh5 and now:

4...exd4 5.Bc4 and now:

5...Qf6? 6.Nd5 Qd6 7.Bf4! g6 8.Bxd6 gxh5 9.Nxc7+ Kd8
10.Bxf8! Kxc7 11.Bg7 1–0 Arslanov - Perez Rodriguez, chess.com 2023

5...Qe7 6.Bg5 Nf6 7.Bxf6 Qxf6 8.Nxe4 Qe7 9.0–0–0 g6 10.Qe2 Be6
11.Bxe6 fxe6 12.Nf3 Nc6 13.Nxd4 Bg7 14.Nxc6 bxc6 15.Rhe1 0–0 16.Nd2 Rab8 17.Nb3 Qf6 18.Qxe6+ Qxe6 19.Rxe6 Rxf2 20.Rd2 Bh6 21.c3 Rd8 0–1 Graif - Mayaud, chess.com 2023

4...Nf6 5.Qxe5+ and now:

5...Qe7 6.Bg5 Nc6 7.Bb5
7...Nd7 (This knight move loses a piece. If 7...Qxe5 8.dxe5 Nd7 9.Bxc6 bxc6 10.0–0–0 White stands better.) 8.Bxc6 Qxe5 9.Bxd7+ 1–0 Graif - Beulen, chess.com 2023

5...Be7 6.Bb5+ [6.Bf4=] 6...Bd7 7.Be3 0–0 8.0–0–0 Bd6 9.Qg5 Nc6 10.Nh3 Re8 [10...h6!?] 11.Qh4 Nb4 12.Bg5 [12.Bc4=] 12...Nxa2+ 13.Nxa2 Bxb5 14.Nc3 Bc4 15.Rhe1 Be7 16.d5 Qd6
17.Rd4 [17.Nxe4=] 17...b5 [If 17...Qa6! Black is winning.] 18.Nxe4 Nxe4 19.Rdxe4 Bxg5+? [19...f6 20.Bxf6 Bxf6 21.Rxe8+ Rxe8 22.Rxe8+ Kf7 23.Qe4=] 20.Nxg5 Rxe4 21.Qxh7+ Kf8 22.Qh8+ [1–0 Arslanov - Daeschler, chess.com 2024

For an expanded look at the 50 games (105 diagrams) I did last year, see my new book Chess Chronicles: Blackmar-Diemer Gambit and Other Chess Games

Below are my Blackmar-Diemer Gambit ebook collections.
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Thursday, March 7, 2024

Blackmar-Diemer Gambit Teichmann

The Blackmar-Diemer Gambit is a sharp and aggressive opening. White sacrifices a pawn in exchange for rapid development and attacking chances. One of the main variations arising from this gambit is the Teichmann Variation, which occurs after the moves 4.f3 exf3 5.Nxf3 Bg4. Here I explore ten games from the past couple of years.

I enjoy playing the Teichmann Variation from both sides. White aims to exploit the lead in development and control the center. Black seeks to neutralize White's initiative and capitalize on the extra pawn. These games highlight the importance of precise play, as a single misstep can drastically alter the course of the game.

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Bg4

The move I play is 6.h3 but first we look at 6.Bc4 e6 and now:

7.Be3 Nc6 8.Qe2 Bb4 9.0–0 0–0 (9...Nxd4 looks good for Black.) 10.Rad1 Nd5 11.Nxd5 exd5 12.Bd3 Re8 13.Qf2 Bh5 14.Ng5 Bg6
15.Nxf7 (Better is 15.Bxg6! fxg6 16.Qf7+ Kh8 17.Rf3 with a strong attack.) 15...Qe7 16.Bxg6 Qxe3 17.Qxe3 Rxe3 18.Bd3 Nxd4= but 0–1 in 60. Gallego Bergada -Pourkashiyan, chess.com 2024

7.0–0 and now:

7...Bxf3 8.Rxf3 Bb4 9.Bg5 Nbd7 10.Ne4 Be7 
11.Nxf6+ (Or 11.Qd3=) 11...Nxf6 12.c3 0–0 13.Bd3 h6 14.Bxh6 gxh6 15.Qd2 Ng4 16.Rg3 f5 17.Qxh6 Rf6 18.Qg5+ Kf8 19.h3 Rf7 20.hxg4 Bxg5 0–1. Gallego Bergada -Ai, chess.com 2024;

7...c5 8.Bb5+ (The immediate 8.d5 favors White.) 8...Nc6 9.d5 exd5 10.Qe1+ Be7 11.Ne5 0–0 (11...Bd7 favors Black.) 12.Bxc6 bxc6 Now White wins a piece.
13.Nxc6 Qd7 14.Nxe7+ Kh8 15.Bg5 Rae8 16.Rxf6 Rxe7 17.Qh4 Re6 18.Rf4 and 1–0 in 30. McCarthy -Pradhan, Peterborough ENG 2024

7...Nc6 8.Be3 Bd6 9.Qe1 Nb4 10.Bb3 Bf5 11.Bg5 h6 (11...Bxc2 is better for Black.) 12.Bxf6 Qxf6 13.Ne5 0–0–0
14.Nb5 (More accurate is 14.Ne4 Qe7 15.Nxd6+) 14...Nd5 (14...Bxe5 favors Black.) 15.Nxa7+ Kb8 16.Nb5 Bxe5 17.dxe5 Qg5 18.Bxd5 Rxd5 19.c4 Bh3 20.Qg3 and 1–0 in 34. Gallego Bergada -Sroczynski, chess.com 2024

My favorite line of the Teichmann is 6.h3. 
This forces Black to retreat the bishop or exchange pieces on f3. First, we look at the retreat and then the capture.

6...Bh5 7.g4 Bg6 8.Ne5 and now:

8...e6 9.Qf3 Qxd4 10.Nxg6 hxg6 11.Qxb7 Bd6
12.Qxa8 (Better is 12.Bd2 which gives the White king as escape square on d1.) 12...Bg3+ 13.Ke2 Qf2+ 14.Kd3 0–0 15.Kc4 Rd8 (15...Nbd7! wins for Black.) 16.Bd3 (16.Kb3 Qb6+ 17.Bb5=) 16...Qd4+ 17.Kb3 Na6 18.Qxd8+ Qxd8 19.Bxa6 c5= but 0–1 in 51. Stead - Lopez Gracia, chess.com 2023;

8...c6 9.Bg2 e6 10.0–0 Bd6 11.Bg5 Be7 12.h4 h6 13.Nxg6 fxg6 14.Bf4 0–0
15.Qd3 (15.Bg3=) 15...Nxg4 16.Qxg6 Qxd4+ 17.Kh1 Rxf4 (Or 17...Nf2+ threatening the king and the f4 bishop for a Black win.) 18.Qxe6+ Kh8 19.Qc8+ Kh7 and 0–1 in 32. Palczert - Breuil, chess.com 2024

8...Nbd7 9.Qf3 and now:

9...c6 10.Nxg6 hxg6 11.g5 Nh5 12.Bc4 e6 13.Rf1 Qe7
14.h4 (Or 14.Bd2 intending 0–0–0 for White.) 14...Nb6 15.Bd3 Qc7 16.Be3 Qg3+ 17.Qxg3 (17.Kd2=) 17...Nxg3 18.Rf3 Nf5 and 0–1 in 49. Graham - Liu, Peterborough ENG 2024)

9...Nxe5 10.dxe5 Nd7
11.Qxb7 (11.e6!? looks promising for White.) 11...Nxe5 (Better is 11...Rb8 12.Qxa7 e6 13.Bb5=) 12.Bb5+ Nd7 13.Bxd7+ Kxd7 14.Qd5+ Ke8 15.Qc6+ Qd7 16.Qxa8+ Qd8 17.Qxd8+ Kxd8 18.Bf4 Bxc2 19.Rh2 Bg6 20.0–0–0+ Kc8 21.Rhd2 e6 22.Rd8+ Kb7 23.R1d7 Kc6 24.Rxc7+ Kb6 25.Rb8+ Ka6 26.Rc6+ Ka5 27.Rb5# 1–0. Graham -Yu, Peterborough ENG 2024]

Finally, here is the Teichmann Exchange Variation.
6...Bxf3 7.Qxf3 c6 and now:

8.Be3 e6
9.0–0–0 (The main line goes 9.Bd3 Nbd7 10.0–0=) 9...Bb4 10.Ne4 Nxe4 11.Qxe4 Qd5 12.Qg4 Qxa2 13.c3 Bf8 14.Bd3 Nd7 15.Rhf1 Nf6 16.Qf3 0–0–0 and 0–1 in 44. Palczert - Molina, chess.com 2024

8.g4 e6 9.g5 Nd5 10.Bd3 Bb4 11.0–0 Qe7 [Or 11...0–0 12.Ne4=] 12.Ne4 Nd7 13.c3 Ba5
14.c4 [White can regain the pawn with an advantage by 14.Qxf7+ Qxf7 15.Nd6+ Ke7 16.Nxf7 which White plays four moves later.] 14...Nb4 15.Bb1 Bc7 16.a3 Na6 17.b4 Bb6 18.Qxf7+ Qxf7 19.Nd6+ Ke7 20.Rxf7+ Kxd6 21.Bf4+ e5 22.c5+ Naxc5 23.bxc5+ Nxc5 24.Bxe5+ Kd5 25.Ba2+ Ke4 26.Re1+ Kd3 27.dxc5 Bxc5+ 28.Kg2 Rhf8 29.Bxg7 Rxf7 30.Bxf7 Bxa3 31.Rf1 Bc5 32.h4 a5 33.h5 a4 34.g6 hxg6 35.h6 a3 36.h7 a2 37.h8Q [Better is 37.Bg8] 37...Rxh8 38.Bxh8 b5 39.Bxa2 b4 40.Bb1+ Kc4 41.Bxg6 b3 42.Rc1+ Kb4 43.Bc3+ Kb5 44.Bd3+ Kb6 45.Rb1 Bd6 46.Rxb3+ Kc7 47.Kf3 c5 48.Ke4 Kc6 49.Bc4 Bc7 50.Bd5+ Kd7 51.Rb7 Kc8 52.Be5 Bd8 53.Kf5 c4 54.Ke6 Bc7 55.Rxc7+ Kd8 56.Rh7 Kc8 57.Rh8# [1–0. Arslanov - Ismayil, chess.com 2024] 1–0

For an expanded look at the 50 games (105 diagrams) I did last year, see my new book Chess Chronicles: Blackmar-Diemer Gambit and Other Chess Games

Below are my Blackmar-Diemer Gambit ebook collections.
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Wednesday, February 7, 2024

Blackmar-Diemer Huebsch Gambit

The Huebsch Gambit falls under the Blackmar-Diemer Gambit (BDG) chess openings. The Huebsch Gambit arises after the moves 1.d4 Nf6 2.Nc3 d5 3.e4 Nxe4. The gambit is named after E. Huebsch who won as White vs Tartakower in 1922. As in the BDG proper (3...dxe4 4.f3), this 3...Nxe4 aims to rapidly develop the pieces and open lines for the attack at the cost of a pawn. The Huebsch Gambit trades off Black's kingside knight.
The normal continuation 4.Nxe4 dxe4 seeks to exploit the central pawn structure imbalance. White's idea behind this pawn sacrifice is to gain a lead in development and open lines for attacking the Black king. The gambit leads to unbalanced positions that can offer white good chances for an initiative, especially in club play or among players unfamiliar with the intricacies of the gambit. The critical evaluation of the Huebsch Gambit, like many gambits, depends on the player's style and preparation.

After the moves 1.d4 Nf6 2.Nc3 d5 3.e4 Nxe4 4.Nxe4 dxe4, White has several options for the fifth move, each leading to different types of positions and strategies:
1.d4 Nf6 2.Nc3 d5 3.e4 Nxe4 4.Nxe4 dxe4:
The main line for this post is 5.Be3, but first let's consider two other options:

5.f3: With this move, white aims to undermine the e4 pawn and reclaim it, restoring material equality while opening lines for the bishop and queen. This move signals white's intention to play for a strong center and develop the pieces rapidly. Although it weakens the kingside somewhat, the idea is to leverage the lead in development and central presence to launch an attack or exert pressure across the board.
5...Bf5 (Or 5...e5! 6.Be3 exd4 7.Qxd4 Qxd4 8.Bxd4 Nc6 and Black is better.) 6.Bc4 e6 7.Qe2 Qxd4 8.Be3 Qxb2 9.Rd1 Bb4+ 10.Kf1 0–0 and 0–1 in 31. Le Goff - Girsh, chess.com 2022

5.Bc4: Targeting the vulnerable f7 square, this move is more aggressive and aims to put immediate pressure on black's position. Bc4 also prepares white to castle kingside quickly and supports the idea of recovering the pawn on e4 with a better-developed position. This move can lead to sharp play, as white seeks to exploit the lead in development and the weaknesses in black's camp, especially around the king.
and now:
5...Bf5 6.g4 Bg6 7.Ne2 e6 8.h4 h6 9.Nf4 Bh7 10.g5 e5 11.g6 exf4 12.Bxf7+ Ke7 13.Qe2 Qxd4 14.Bxf4 Bg8 15.Rd1 Qa4
16.b3 (White missed a mate in 7: 16.Bg5+! hxg5 17.Qd2 Qa5 18.Qxa5 b5 19.Qxc7+ Kf6 20.hxg5+ Kxg5 21.Rd5+ Kg4 22.Qg3#) 16...Qc6 17.Bxg8 Rxg8 18.Rd4 Qc3+ 19.Rd2 Kf6 20.Qxe4 Bb4 21.Bg5+ hxg5 22.hxg5+ Kxg5 23.f4+ Kf6 24.0–0 Bc5+ 25.Rdf2 Qg3+ 0–1 Pert - Lee, chess.com 2021

5…e6 6.Ne2 Nc6 7.c3 e5 8.0–0 Bd6 9.Ng3 exd4
10.cxd4 (10.Nxe4=) 10...Bxg3 (10...0–0 would favor Black.) 11.fxg3 0–0 12.Be3 Qe7 13.Qh5 g6 14.Qh6 Be6 15.d5 Qb4? (15...Na5=) 16.Bb3 Bd7 17.dxc6 Bxc6 18.Rad1 Rad8 19.Rxd8 Rxd8 20.Bxf7+ Kh8 21.Bxg6 Qe7 22.Rf7 Rd1+ 23.Kf2 Rd2+ 24.Bxd2 Qc5+ 25.Qe3 Qc4 26.Rxh7+ Kg8 27.Qb3 Bd5 1–0 Christensen - Muminova, lichess.org 2021

5.Be3: This move develops a piece, supports the d4 pawn, and speeds up the possibility of queenside castling. White prepares to open up the center via f3. This move keeps the central tension and prepares for a kingside or central assault, depending on Black's responses.
and now:
5...e5 6.dxe5
6...Qxd1+ (Or 6...Qe7!?=) 7.Rxd1 Nc6 8.f4 exf3 9.Nxf3 Bg4 (Black could save a tempo with 9...Be7 10.Bb5 Bd7) 10.Bb5 Bd7 11.0–0 Be7 12.Bg5 a6 13.Bc4 Bg4 14.Bxe7 Kxe7 15.Bd5 Bxf3 16.Rxf3= and 1–0 in 85 (possibly on time). Arslanov - Doluhanova, chess.com 2023

5...Nd7 6.f3 exf3 7.Nxf3 Nf6 8.Ne5 c6 9.Bc4 e6 10.0–0 Be7 11.Bd3 0–0 [This position resembles the BDG 5.Nxf3 e6 line.] 12.Qf3 Qe8 13.Qh3 g6 14.Rf3 Nd7 15.Qh6 Nxe5
White has a forced mate. 16.Rh3 Ng4 17.Qxh7# 1–0 Graif - Rios Escobar, chess.com 2022

5...c6 6.Qd2 b6 7.0–0–0 Bg4 8.f3 Be6 9.fxe4 Nd7 10.Kb1 a6 11.Nf3 Nf6 12.Ng5 Bg4 13.Re1
and 1–0 in 32. Sawyer - Silas the Strong, Chess.com 2024

5...e6 6.Qd2 Be7
7.0–0–0 (Better is 7.f3 c5 8.fxe4 cxd4 9.Qxd4 Qxd4 10.Bxd4=) 7...0–0 8.f3 c5 9.dxc5 Qxd2+ 10.Rxd2 exf3 11.Nxf3 Nd7 12.b4 a5 13.c3 Nf6 and 0–1 in 39. Palczert - Krzyzanowski, chess.com 2024

5...g6 6.f3 exf3 7.Nxf3 Bg7 8.Qd2 Bg4 9.0–0–0 Bxf3 10.gxf3 Nc6
11.Bb5 (Sharper is 11.d5! Ne5 12.f4 Ng4 13.Bb5+ Kf8 14.Bc5=) 11...a6 12.Bxc6+ bxc6 13.Bh6 Bxh6 14.Qxh6 Qd5 15.Kb1 0–0–0 16.Qe3 e5 17.Qxe5 Qxe5 18.dxe5 Rxd1+ 19.Rxd1 Re8= and Black outplayed White in the endgame. 0–1 in 46. Graif - Zierk, chess.com 2022

5...Bf5 and now:
6.Qd2 e6 7.0–0–0 Be7 8.f3 Nc6 9.g4 Bg6 10.Bb5
10...a6 (Or 10...exf3 11.Nxf3 Qd5 favors Black.) 11.Bxc6+ bxc6 12.h4 h5 13.g5 Qd5 and 0–1 in 25. Palczert - Taspinar, chess.com 2024

6.g4 Bg6 and now:
7.Ne2 Nd7
8.Nf4 (8.h4! h6 9.Nf4 Bh7 10.Qe2=) 8...e5 9.Nxg6 hxg6 10.Bg2 f5 11.Qe2 exd4 12.Bxd4 Qg5 13.Be3 Qf6 14.0–0–0 0–0–0 favors Black, and 0–1 in 34. Graif - Ovchinnikov, chess.com 2022

7.Bg2!? [Maybe 7...h5!?] 8.Ne2 Nd7 9.h4 h5 10.Nf4 e5 [10...Bh7 11.Nxh5=] 11.Nxg6 fxg6 12.Bxe4 Qf6 13.g5 Qe6 14.Qd3 0–0–0 15.d5 cxd5 16.Bxd5 Qd6 17.0–0–0 Be7 18.Bxb7+ Kxb7 19.Qxd6 Bxd6 20.Rxd6
[and White has a big advantage.] 20...Nb6 21.Rxg6 Rd7 22.Bxb6 axb6 23.Re6 Rf8 24.Rd1 Rc7 25.Rd2 Rf4 26.Rxe5 Rxh4 27.Rde2 Rh1+ 28.Re1 Rh2 29.Re7 Rxf2 30.Rxc7+ Kxc7 31.Re7+ Kd6 32.Rxg7 Rf1+ 33.Kd2 Rf2+ 34.Kc3 Rf3+ 35.Kb4 Rf2 36.Kb3 Rg2 37.a4 Rg4 38.Rg6+ Kc5 39.Rg8 Rg3+ 40.c3 Rg4 41.g6 h4 42.g7 h3 43.Rc8+ 1–0 Palczert - Fernandez Garcia, chess.com 2024

For an expanded look at the 50 games (105 diagrams) I did last year, see my new book Chess Chronicles: Blackmar-Diemer Gambit and Other Chess Games

Below are my Blackmar-Diemer Gambit ebook collections.

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