Chess Opening Theory/1. f4/1...e5/2. fxe5/2...d6/3. exd6/3...Bxd6/4. Nf3/4...g5/5. h3/5...Bg3

Bird's Opening
	a b c d e f g h 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 a b c d e f g h
	Position in Forsyth-Edwards Notation (FEN) rnbqk1nr/ppp2p1p/8/6p1/8/5NbP/PPPPP1P1/RNBQKB1R w
	Moves: 1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. h3 Bg3

5...Bg3#

This is checkmate.

Bird's Opening
a b c d e f g h 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 a b c d e f g h
Position in Forsyth-Edwards Notation (FEN) rnbqk1nr/ppp2p1p/8/6p1/8/5NbP/PPPPP1P1/RNBQKB1R w
Moves: 1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. h3 Bg3