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Chess Opening Theory/1. c4/1...b5

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Halibut Gambit
a b c d e f g h
8a8 black rookb8 black knightc8 black bishopd8 black queene8 black kingf8 black bishopg8 black knighth8 black rook8
7a7 black pawnb7 black kingc7 black pawnd7 black pawne7 black pawnf7 black pawng7 black pawnh7 black pawn7
6a6 black kingb6 black kingc6 black kingd6 black kinge6 black kingf6 black kingg6 black kingh6 black king6
5a5 black kingb5 black pawnc5 black kingd5 black kinge5 black kingf5 black kingg5 black kingh5 black king5
4a4 black kingb4 black kingc4 white pawnd4 black kinge4 black kingf4 black kingg4 black kingh4 black king4
3a3 black kingb3 black kingc3 black kingd3 black kinge3 black kingf3 black kingg3 black kingh3 black king3
2a2 white pawnb2 white pawnc2 black kingd2 white pawne2 white pawnf2 white pawng2 white pawnh2 white pawn2
1a1 white rookb1 white knightc1 white bishopd1 white queene1 white kingf1 white bishopg1 white knighth1 white rook1
a b c d e f g h
Position in Forsyth-Edwards Notation (FEN)

rnbqkbnr/p1pppppp/8/1p6/2P5/8/PP1PPPPP/RNBQKBNR w

Moves: 1.c4 b5
ECO code: A10
Parent: English Opening

English Opening: Halibut Gambit

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The Halibut gambit is a wing gambit. Black sacrifices a pawn on b5 to move white's central pawn to the outermost flank, while also helping black develop his pieces after 3.bxa6 with either then 3...Bxa6, 3...Nxa6, or even 3...e5 ignoring the pawn like in the Benko Gambit and grabbing space in the center.

Theory table

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For explanation of theory tables, see theory table and for notation, see algebraic notation..

1.c4 b5

2 3 4 5 6
cxb5
a6		 e4!
Bb7		 Nc3
Nf6		 e5
Nd5		 Nf3
e6		 +=
...
...		 ...
d5		 exd5
Nf6		 d4
Nxd5		 Nf3
e6		 +=

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Wikipedia has related information at English Opening

References

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