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This page is for the Borg Defense that begins with the moves 1. e4 g5. If you are looking for the page with the other Borg Defense that starts with the moves 1. d4 g5, go to Queen’s Pawn Opening: Borg Defense.

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 h7 pd 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 c5 d5 e5 f5 g5 pd h5 5
4 a4 b4 c4 d4 e4 pl f4 g4 h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 pl b2 pl c2 pl d2 pl e2 f2 pl g2 pl 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 Borg Defense.

The Borg Defense, also known as the Basmaniac Defense is a rare chess opening that starts with the moves

  1. e4 g5

Michal Basman has played this opening in the 1980 British Championship. This opening barely controls the center, but it does control f4 and it prepares for Black to fianchetto their kingside bishop. White will usually play d4 next, which puts Black’s g-pawn under attack. Black can either defend with h6 (not with f6 otherwise then Qh5# is checkmate like a reversed Fool’s mate) or just gambit the pawn and play Bg7. If Bkack defends with h6, white can play h4 to open up the h-file. Black can then play Bg7 so then after White’s h-pawn takes Black’s g-pawn and Black’s h-pawn recaptures, if White wants to take Black’s rook at least it is protected by the bishop.

Borg Gambit[]

a b c d e f g h
8 a8 rd b8 nd c8 bd d8 qd e8 kd f8 g8 nd h8 rd 8
7 a7 pd b7 pd c7 d7 pd e7 pd f7 pd g7 bd h7 pd 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 c5 pd d5 e5 f5 g5 bl h5 5
4 a4 b4 c4 d4 pl e4 pl f4 g4 h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 pl b2 pl c2 pl d2 e2 f2 pl g2 pl h2 pl 2
1 a1 rl b1 nl c1 d1 ql e1 kl f1 bl g1 nl h1 rl 1
a b c d e f g h
The Borg Gambit after 1. e4 g5 2. d4 Bg7 3. Bxg5 c5

The Borg Gambit is very similar to the Grob Gambit which Black ignores the hanging g-pawn and fianchettos the kingside bishop. If White accepts the gambit with Bxg5, Black can play c5 to put pressure on White’s queenside. If White captures or pushes the d-pawn forward, his/her rook will be trapped with Bxb2, so white will usually play c6. Black can either play cxd4 or b6, preparing to fianchetto the other bishop. If White plays Nc6 instead of c6, Black should play cxd4, kicking the knight out.

Other Responses[]

Troon Gambit: 1. e4 g5 2. d4 h6 3. h4 g4

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