From the theory books, I knew that (2.f4 ef 3.Nf3) 3. ... Be7 was called the Euwe defense. But however it is called, the line 4.Bc4 looks the least appealing for me (although this might be the main way). White has also 4.Nc3 and 4.d4 which I practice both, and there is 4.Be2. It's true that Black has to know at least one of the King's Gambit lines, while White has to be prepared for all of Black's main responses - in case of (2.f4 ef) 3.Nf3 - at least 3. ... g5, 3. ... d5, 3. ... d6, 3. ... Nf6. In blitz games I also rather often face 3. ... Nc6 and from time to time 3. ... h6 and 3. ... Ne7, but I like to explore opening variations. As for declibed King's gambit with 2.(f4) Bc5, the lines with (2.f4 Bc5 3.Nf3 d6) c2-c3 look attractive.
How can I fight King's Gambit as Black


I defend by not playing into e5 in the first place. Been playing the French defense for about a year now; no more KG problems. i.e. The lazy way out.

I defend by not playing into e5 in the first place. Been playing the French defense for about a year now; no more KG problems. i.e. The lazy way out.

Your second example can lead to trouble as well: 4. bc4 nc6 5. nc3 exf4 6. d4 nxd4 7. ne5!? bxd1? 8. bxf7+!! ke7 9.nd5# I believe it's call LaSalles Mate... or something like that.
Légal's mate. https://en.wikipedia.org/wiki/L%C3%A9gal_Trap

The Falkbeer counter gambit is good for faster time control games especially. If white has not seen it much they can get into some trouble. The games get to this position a lot of times, which is fun to play as black has good attacking chances.
Now white has a hard time castling and must play accurately.

The Falkbeer counter gambit is good for faster time control games especially. If white has not seen it much they can get into some trouble. The games get to this position a lot of times, which is fun to play as black has good attacking chances.
Now white has a hard time castling and must play accurately.
1.e4 e5 2.f4 d5 seems to be at least a really good practical choice. You don't need to know too much in most of the lines. I hope this was helpful for you.

If you don't want 3. ...g5 just play ...Be7 with the threat of Bh4+. White will not be able to castle and usually is less familiar with the theory behind the move. 3. ...Be7 is why I don't play the KG as white. I'm sure white has a way to play for equality but I personally hate the positions I get when people play that
The move Be7-h4+ might look as "threat", but it is not something to be afraid of, just like Qd8-h4+ after 2.f4 ef 3.Bc4

The problem with the Bishop on h4 is that it is not doing much other than forcing the White King to move to a safer place, all the while becoming a target for White, moreover with an inconvenient retreat.


That 1182 player might even not know that it was the King's Gambit. As a rule, after 2.f4 Bc5 - 3.Nf3 is played automatically. For some period I practiced 3.Qf3!? - with possible Qf3-g3
Possibly helpful:
Beating the open games, Mihail Marin
https://web.archive.org/web/20140626195205/http://www.chesscafe.com/text/hansen102.pdf
Open-Games-Black-Igor-Lysyj
https://web.archive.org/web/20140627104938/http://www.chesscafe.com/text/hansen159.pdf
Play the Open Games as Black by John Emms
https://web.archive.org/web/20140627022601/http://www.chesscafe.com/text/hansen11.txt
Bologan's Black Weapons in the Open Games
http://www.jeremysilman.com/shop/pc/Bologans-Black-Weapons-in-the-Open-Games-76p3873.htm
Starting Out: Open Games by GM Glenn Flear (2010)
https://web.archive.org/web/20140626232452/http://www.chesscafe.com/text/hansen134.pdf
Play 1 e4 e5! by Nigel Davies (2006)
https://web.archive.org/web/20140626201436/http://www.chesscafe.com/text/hansen80.pdf
https://web.archive.org/web/20140627083715/http://www.chesscafe.com/text/hansen98.pdf
The Kaufman Repertoire for Black & White by Larry Kaufman (2012)
https://web.archive.org/web/20140626221508/http://www.chesscafe.com/text/hansen162.pdf
Opening Repertoire: The Open Games with Black by Martin Lokander (2015)
https://www.newinchess.com/Shop/Images/Pdfs/7546.pdf
Playing 1.e4 e5 - A Classical Repertoire by Nikolaos Ntirlis (2016)
https://www.newinchess.com/Shop/Images/Pdfs/7572.pdf