Jason Delpire had a spur of the moment inspiration to play a Blackmar Gambit as Black against Bird's Opening. From Gambit begins 1.f4 e5 2.fxe5 d6. Carl Schlechter had played 2...Nc6 3.Nf3 g5. Jason Delpire opted for 3...f6 4.exf6 Nxf6. My database had White scoring +6 -5 in previous games. Black enjoyed success in this blitz game. He sacrificed a piece and made threats. Jason's risky strategy paid off with checkmate!
palamambron (1706) - Delpire (1588), Rated Blitz lichess, 25.04.2019 begins 1.f4 e5 2.fxe5 Nc6 [The Birds Opening From Gambit is 2...d6 3.exd6 Bxd6 4.Nf3=] 3.Nf3 f6!? [Dozens of times I've played the Schlechter Gambit 3...g5!?] 4.exf6 [White could try 4.d4 or 4.e4] 4...Nxf6 5.d4 Bd6?! [5...d5! gives Black the use of two bishops.] 6.g3 [6.e3+/-] 6...0-0 7.Bg2 Ne4 [Maybe 7...b6!?] 8.0-0 [A thematic move in this type of position is 8.Qd3+/-] 8...Nxg3 9.hxg3 Bxg3 10.Bg5 [10.Ng5!+- leaves White up a knight and a pawn with a good position.] 10...Qe8 11.Qd3 Qh5 12.Nbd2?! [More active is 12.Nc3!+- which has the added advantage that the knight would cover e2.] 12...d5 13.c4?! Bf5