Hyper Accelerated Dragon - how to respond to 4. bxf7+?!

Everything I have found has black responding to 3.bc4 with bg7 to which white replys 4. c3. But if white sacs the bishop with 4. Bxf7 then black almost has to respond kxf7 which gives white 5.ng5+ and puts black in a tough position. The database I use, 365chess.com, doesn't even have this move. Below is the game I played. I didn't lose because of this move. I feel like I had opportunities to equalize that I wasn't able to capitalize on. But it definitely put me on my heels right away and it was hard to recover.

6...Nh6 is much stronger than ..Nf6, even ..Bf6 is much better.  Need control of the e5 square(Houdini says its almost 2 pawn difference between Nf6 and Nh6).  Otherwise just play accurate defensive moves against their most likely inaccurate attacking moves and get a free win! 

@fixing_a_hole I see. Nh6 leaves the bishop attacking e5 and leaves rf8 immediately available as well. The knight defends f7 from there and is ready to hop to f5 if it becomes available.

@dodgernation I wouldn't say bxf7+ gives up a piece for nothing--it gives white a bigger lead in development, prevents black from castling and picks up a pawn. Whether or not this is sufficient compensation I can't say. It seems like it may not be.

I know this move looks scary and potentially a justifiable attack, but it really isn't. Basically, just accept the sacrifice if it is made (though I doubt it will be played often), and defend your position and you should win. 

In your game, you may not have played the best moves, but until you got your bishop pinned and lost, you were winning. 

Bxf7 is really nothing to be afraid of.

Thanks for the insight guys. I think I see how I should have responded now.

@veganomnonom I was asking if there was sufficent compensation--I never said I saw it and I never said I was worried about an opening sac. I just wanted to learn how to best respond to this off-the wall move. That's all. My rating is low because I'm not a very strong player yet. That, and I don't care about a number on the Internet. I'm just here to learn.

@chessmicky I knew it wasn't a winning attack and I knew I hadn't blundered (yet lol). But I also knew I was out of position, way behind in development and unable to castle. The fact that I wasn't able to find any info on this move made me think it was probably unsound but I still wanted to get input from people more knowledgeable than I so I posted here.

@dodgernation I'm familiar with the opening principles (developing minor pieces toward the center is why I moved nf6 instead of nh6, which was a mistake) and I'm very aware that one piece attacks can't win the game but they can certainly "work" if the goal is positional.

@archdukeshrimp I'm sure you're right about it not being played often since I couldn't even find it in a database. I definitely did not make the best moves and overall I felt like the game was mine to lose. I see now why this is not a justifiable attack.

I read my previous response, and am worried that I was a bit harsher than I intended to be- there is absolutely nothing wrong with asking about this opening sacrifice you came across, and when I said that you "didn't play the best moves", I don't mean to say that you were playing poorly. You were winning until another tactical threat appeared.

I hope to see you continue to become a stronger player!

Well, Nf6 just fails to e5 because it's pinned.

Whoops i made it a puzzle. Just click the show me button and read annotatiosn & sidelines.

@theelementalmaster These are totally different openings, although the first one does involve the Bishop sac in question here under similar circumstances. I'm not sure I understand your point unless you're just reiterating that this is not a good sac for white. Also, in the first one you say that black can still castle but that's clearly untrue unless you mean artificially.

@archdukeshrimp Not at all. I freely admit that I play poorly. lol But hopefully with study and practice I will play better. :)

@veganomnomnom Yeah, a second look and it's clear that I'm not really behind in development in terms of piece count. I guess I just felt like I was because I'd moved my king twice and was feeling pressure. And "out of position" was poor word choice. "On my heels" might have been better. Or "off balance." All in all though, I feel like you're mostly here to make fun of me.

Is g5 forced. What about f6?

The f pawn is pinned by whites LSB

Thanks @xplayerjx. :) It wasn't a bullet game though. It was 10|0. Live games are tough for me. I don't perform well under pressure. My favorite way to play is OTB with a friend and no clock. But even with the "Online Chess" where I have 3 days to make a move I'm average at best. If you looked at the endgame in the game I posted above then you saw that I had a clear advantage and I totally blew it. lol

@veganomnomnom Yeah, you're totally right. I'm quick to get defensive and I often don't even realize I'm doing it right away. Tone is hard to read in text and I sometimes perceive slights that aren't there. I apologize for jumping to conclusions.

Sometimes the 'one piece attacks' can be tricky, such as in Cochrane's gambit 1.e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7

...What kind of analysis is that? Aside from the atrocious grammar and assuming black will throw away his queen and get mated for no reason, 7...Ke6, while risky, is not "just a loss."

Thanks! This is very helpful!