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Chess Opening Theory/1. f4/1...e5/2. fxe5/2...d6/3. exd6/3...Bxd6/4. Nf3/4...g5

Bird's Opening
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Position in Forsyth-Edwards Notation (FEN)
Moves: 1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5

4...g5

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This is the Lasker variation, the most aggressive and double edged line. Black now threatens g4 followed by Qh4+, Bxg3+, and mate to follow. The most common move, and, according to Lakdawala, "Our only hope of wresting the advantage". The game now turns into a full-blown firefight.

Theory table

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5 6
h3??

Bg3#

0-1
g3

g4

Nh4 +/=

References

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