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Chess Opening Theory/1. d4/1...Nf6/2. c4/2...c5/3. d5/3...b5/4. g4
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Benko Gambit 1.d4 Nf6 2.c4 c5 3.d5 b5 4.g4 A57-A59 Benoni Defence
Benko Gambit: Mutkin Countergambit
If Black accepts the free g-pawn, White can gain center control with 5. e4 while Black's knight remains in an unfavorable position. If Black ignores the gambit, 5. g5 will also force Black's knight away from the center.
Theory table
.
1. d4 Nf6 2. c4 c5 3. d5 b5 4. g4
4
5
6
7
cxb5a6
bxa6Bxa6
Nc3d6
Nf3g6
∞
Nf3g6
cxb5a6
Nc3axb5
e4b4
∞
a4b4
Nd2g6
e4d6
Ngf3Bg7
∞
Nd2
References
Benko Gambit