Jerome Gambit: Almost Home

In the following Jerome  Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) game White enters a line that neither he nor his opponent is very familiar with. His courage nets him a winning advantage - but a moment's oversight costs him the game.

The moral is as always, for both sides: Do not let your attention flag until your opponent turns down his King.

BahatiTheGrandmaster - weedtea

10 0 blitz, lichess.org, 2021

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ g6 7.Qxe5 d6 

The Blackburne defense, arguably the most notorious one at Black's disposal. It leads to a complicated game that favors White - if he knows how to find his way through.

8.Qxh8 Bxf2+ 

Possibly Black was unaware of the Amateur - Blackburne, London, 1884 game; perhaps this was his improvment. In any event, this move has been successfully met by online by blackburne, UNPREDICTABLE, and MrJoker, among others. 

Henry Joseph Blackbure played 8...Qh4 instead, planning to both attack White's King and lock in White's Queen.

9.Kxf2 Qh4+ 

Black will have his attack.

White's resource is now 10.g3 when 10...Qxe4 (what else?) 11.Qxh7+ Kf8 12.Rf1 will allow his King to move to safety at g1, wherupon his advantage in material and attack on the enemy King will prove decisive. 

10.Kg1 Qe1 checkmate

Surprise!