Chess Opening Theory/1. f4/1...e5/2. fxe5/2...Nc6/3. Nf3/3...g5

Bird's Opening
a b c d e f g h
8a8 black rookb8 black kingc8 black bishopd8 black queene8 black kingf8 black bishopg8 black knighth8 black rook8
7a7 black pawnb7 black pawnc7 black pawnd7 black pawne7 black kingf7 black pawng7 black kingh7 black pawn7
6a6 black kingb6 black kingc6 black knightd6 black kinge6 black kingf6 black kingg6 black kingh6 black king6
5a5 black kingb5 black kingc5 black kingd5 black kinge5 white pawnf5 black kingg5 black pawnh5 black king5
4a4 black kingb4 black kingc4 black kingd4 black kinge4 black kingf4 black kingg4 black kingh4 black king4
3a3 black kingb3 black kingc3 black kingd3 black kinge3 black kingf3 white knightg3 black kingh3 black king3
2a2 white pawnb2 white pawnc2 white pawnd2 white pawne2 white pawnf2 black kingg2 white pawnh2 white pawn2
1a1 white rookb1 white knightc1 white bishopd1 white queene1 white kingf1 white bishopg1 black kingh1 white rook1
a b c d e f g h
Position in Forsyth-Edwards Notation (FEN)
Moves: 1. f4 e5 2. fxe5 Nc6 3. Nf3 g5

3...g5!?

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This is a committing and demented-looking move. But it is the a standard move in the From's Gambit. The point of 3...g5 to to play ...g4 and kick the f3-knight away, and to discourage kingside castling by White. However, it is certainly not without consequence. [1]

Theory Table

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4 5
d4

g4

Ng5

d6

+/=
h3?!

References

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  1. Lakdawala, Cyrus. Bird's Opening: Move by Move. Everyman Chess, 2015.