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a b c d e f g h
8 a8 rd b8 nd c8 bd d8 qd e8 kd f8 bd g8 nd h8 rd 8
7 a7 pd b7 pd c7 pd d7 pd e7 pd f7 pd g7 pd h7 pd 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 c5 d5 e5 f5 g5 h5 5
4 a4 b4 c4 d4 e4 f4 g4 pl h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 pl b2 pl c2 pl d2 pl e2 pl f2 pl g2 h2 pl 2
1 a1 rl b1 nl c1 bl d1 ql e1 kl f1 bl g1 nl h1 rl 1
a b c d e f g h
The Grob Opening.

The Grob Opening, or Grob’s Attack, is an uncommon chess opening starting with the move

  1. g4

This opening is named after Henri Grob. This is considered to be the second worst chess opening behind the Barnes Opening because the Grob severely weakens White’s kingside. Black should play d5 or e5 next, if Black plays e5 and white pushes their f-pawn either to f3 or f4, Black can deliver a checkmate on the second move with Qh5#, which is known as the Fool’s Mate. If Black plays d5, White’s g-pawn is under attack by the queenside bishop. Unlike the Polish Opening, the method that White fianchettos the bishop and plays Bg2 hanging the g-pawn but attacking Black’s d-pawn doesn’t work because the d-pawn is defended by the queen whereas in the Polish Opening, playing Bb2 after Black plays e5, hanging the b-pawn but capturing Black’s e-pawn works. The reverse of the Grob Opening is called the Borg Defense.

Fritz Gambit[]

a b c d e f g h
8 a8 rd b8 nd c8 d8 qd e8 kd f8 bd g8 nd h8 rd 8
7 a7 pd b7 pd c7 pd d7 e7 pd f7 pd g7 pd h7 pd 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 c5 d5 pd e5 f5 g5 h5 5
4 a4 b4 c4 pl d4 e4 f4 g4 bd h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 pl b2 pl c2 d2 pl e2 pl f2 pl g2 bl h2 pl 2
1 a1 rl b1 nl c1 bl d1 ql e1 kl f1 g1 nl h1 rl 1
a b c d e f g h
The Fritz Gambit (1. g4 d5 2. Bg2 Bxg4 3. c4)

There are still some tactics to the Grob, like after 1. g4 d5 2. Bg2 Bxg4, white can play 3. c4 (Fritz Gambit) which somewhat controls the center and if Black captures, White can trap the rook with Bxb7. Black will usually respond with c6 and White can play d3 defending the c-pawn and opening up the queenside bishop. If black responds with Nf6 instead, White can still hang the c-pawn because of the rook trap and play d4, taking control of the center and opening up the queenside bishop.

Other Continuations[]

1..d5[]

Grob Gambit: 1.g4 d5 2.Bg2[]

Grob Gambit, Basman Gambit: 1.g4 d5 2.Bg2 h5 3.gxh5

Grob Gambit, Keres Gambit: 1.g4 d5 2.Bg2 e5 3.d4 exd4 4.c3

Grob Gambit, Declined: 1.g4 d5 2.Bg2 c6[]

Grob Gambit, Declined, Spike Attack: 1.g4 d5 2.Bg2 c6 3.g5

Grob Gambit, Declined, Richter-Grob Gambit: 1.g4 d5 2.Bg2 c6 3.c4 dxc4 4.b3

Keene Defense: 1.g4 d5 2.h3 e5 3.Bg2 c6[]

Keene Defense, Main Line: 1.g4 d5 2.h3 e5 3.Bg2 c6 4.d4 e4 5.c4 Bd6 6.Nc3 Ne7

Zilbermints Gambit: 1.g4 d5 2.e4 dxe4 3.Nc3[]

Zilbermints Gambit, Schiller Defense: 1.g4 d5 2.e4 dxe4 3.Nc3 h5

Zilbermints Gambit, Zilbermints-Hartlaub Gambit: 1.g4 d5 2.e4 dxe4 3.Nc3 e5 4.d3

1..e5[]

London Defense: 1.g4 e5 2.h3 Nc6

Hurst Attack: 1.g4 e5 2.Bg2 d5 3.c4

1..f5[]

Alessi Gambit: 1.g4 f5

1..g5[]

Double Grob Variation: 1. g4 g5

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