I like the following Vampire Gambit: 
WHITE: C4 + F4
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An early f4 leaves your king weak, so black gets ideas like Qh4+ really early. Black can also look at ideas like Bc5, either preventing castling or hitting your king with check if it’s castled kingside. In addition, white is still very slow to bring the bishops out — neither f4 nor c4 helps the bishops come into play. I imagine that black can just develop real quickly and attack white on the light squares and have a fine game.
Yigor schreef:
and the Sturm Gambit:
Also called Bird Benoni gambit. By Sturm himself.
It's refutable but no one plays the English let alone English players playing this variation so you will catch a lot of people by surprise. Stockfish isn't a big fan but -0.5 is not going to destroy you online unless they really prepared against it
Aug 13, 2022
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#8
Riverlandjack wrote:
Yigor schreef:
and the Sturm Gambit:
Also called Bird Benoni gambit. By Sturm himself.
My quick checkmate with the declined Sturm Gambit: 😉
https://www.chess.com/game/daily/241307148
@9
AlphaZero ranks 1 c4 as #4 and 1 f4 as #13, Figure 31.
https://arxiv.org/pdf/2111.09259.pdf
It is rare for c4 and f4 to occur together
1 e4 Nf6 2 e5 Nd5 3 d4 d6 4 c4 Nb6 5 f4
1 d4 Nf6 2 c4 g6 3 Nc3 Bg7 4 e4 d6 5 f4
Here is a rare example of c4 and f4 together without both d4 and e4
https://www.chessgames.com/perl/chessgame?gid=1991693
Aug 13, 2022
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#10
ArvinArmani wrote:
I'm a baboon when it comes to theory, but I just always hated the 2 pawns that get stuck behind the horses. what's the point? what if you do a sick Kings gambit X Queens gambit collab and THEN bring your horsies out? of course you'd do it with a little flexibility considering what the enemy army does; maybe delay the f4 (or c4 if ur weird) a little (or cancel it altogether if the enemy is being a douche), but yea u get the point.
isn't that a great idea?
The problem is pawn moves open up infiltration points / create weaknesses so players will tend to make big pawn moves like that only on one side of the board. When you have superior development on the kingside, for example, then you can leverage the pawn moves and minimize the weaknesses they leave behind. When you advance on both flanks it's usually impossible to cover everything because you can't have a superior force in terms of non-pawns on both sides of the board.
ty
Feb 6, 2023
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#12
the double thrust is almost never seen as it leads to unconfortably weak spots in your position. they are certain larsen/bird/ reversed nimzo indian positions, where white will have a c4/d3/e3/f4 formation where if black plays d4 white can play either exd4 or e4 and ng4 is no threat but that's really the closest you get to the clumsy duo
Feb 6, 2023
0
#13
This is maybe a bit off topic but on the Chessmaster program GM.bots like to play after 1) d4 f5 2) c4 (mini modified opening repertory stopping on this variant here) ...c5 and in tournament games with 10 minutes time, a GM.bot with Black can beat a GM.bot in this variant
And the position is a kind of Sturm Gambit with reversed color
I'm a baboon when it comes to theory, but I just always hated the 2 pawns that get stuck behind the horses. what's the point? what if you do a sick Kings gambit X Queens gambit collab and THEN bring your horsies out? of course you'd do it with a little flexibility considering what the enemy army does; maybe delay the f4 (or c4 if ur weird) a little (or cancel it altogether if the enemy is being a douche), but yea u get the point.
isn't that a great idea?