Humphrey Bogart gambit

Can I have some insights on this gambit please? The gambit goes 1.d4 Nf6 2.g4 Nxg4 and also d5 the declined line,instead of Nxg4

2...Ng4   131 games   40%   Last played 2011   Best Elo 2555

2...d5       42 games   49%   Last played 2548   Best Elo 2548

2...other   29 games    Best Elo 1720  

SOURCE: ChessBase BIG DB 2011 (5.25 million games)

NOTE: The winning percentages are for White, 40% is terrible for White and 49% is merely below average for White. BUT, this opening might be OK for OTB, maybe - possibly - perhaps. Then again, you didn't say you wanted to play it as White, maybe you just wanna know how to play against it. As for any insights into it you're going to have start playing over every game you can find with it, since it's probably not even a footnote in most opening manuals. Good luck!

I've played this OTB in a club championship a few years ago. My opponent was former South African chamion Albert Ponelis. He was so taken aback he declined the gambit, and I ended up messing up a winning position in the end :)

thanks...

For more info on this gambit please look here http://www.chess.com/groups/forumview/gibbins-weidenhagen-gambit--bullfrog