I've come up with a new variation in the Declined Queen's Gambit!

In the Queen’s Gambit variation 1.d4, d5, 2.c4, e6, you can play something like a belated “grob” and make g4, catching your opponent off guard; the computer rates this position quite favorably for such a move, at just -0.6 in Black’s favor. Whereas if you play g4 as your first move, the computer will immediately give a rating of -1.0, so it’s quite playable—and in blitz, it’s an excellent secret weapon for confusing your opponent. At the same time, Black can easily make a mistake that would equalize the position or even give White a slight advantage. Let’s come up with an interesting name for this variation and try to make it more popular—I look forward to your suggestions!

nah, its still bad opening, after 1.d4 1.d5 2.c4 2.e6 3.g4, the best move is 3.C5 attackin the D4 pawn, later, G4 pawn can be a weaknesses like ruining kingside castling and opening more, since we already moved C-pawn, queenside castling isnt safe, later you might wanna play H3 to protect G4 if it gets attacked, i dont recommend an opening thats bad like Jerome Gambit or Danish Gambit, if you want to invent your own opening, you have to create your own theories and books, you cant make openings without slappin even 1 theory, thats not how openings work

@JustAChessPlayer177 said ^

nah, its still bad opening, after 1.d4 1.d5 2.c4 2.e6 3.g4, the best move is 3.C5 attackin the D4 pawn, later, G4 pawn can be a weaknesses like ruining kingside castling and opening more, since we already moved C-pawn, queenside castling isnt safe, later you might wanna play H3 to protect G4 if it gets attacked, i dont recommend an opening thats bad like Jerome Gambit or Danish Gambit, if you want...

Of course, this move might not be the best, but it sharpens the position in blitz and forces your opponent to think for themselves as they move away from the Queen’s Gambit theory. The pawn on f4 has its advantages as well; you can slow down the knight’s development and, if necessary, launch an attack on the king. It’s not the best choice for a beginner, but the positions can turn out to be interesting, and it’s especially suitable for those who enjoy unusual openings, such as the grob or something similar.

I nearly choked on my water when I saw "g4."

@ResurgenceOfVoid said ^

I nearly choked on my water when I saw "g4."

hehe

How about the buffoon variation?
Playing an early g2-g4 makes sense to attack on the kingside but here there's no attack and black hasn't committed to castling there. It makes more sense if there's h6 by black as it's a lever for g4-g5. Or to kick a knight on f6 but there isn't one!
After 3... c5 black is already doing well. Or 3...dxc4 transposing to the queen's gambit accepted where white has played a premature g4. Pawn moves that are not influencing the centre or aiding development should be made with caution in the opening.

@lizani said ^

How about the buffoon variation?
Playing an early g2-g4 makes sense to attack on the kingside but here there's no attack and black hasn't committed to castling there. It makes more sense if there's h6 by black as it's a lever for g4-g5. Or to kick a knight on f6 but there isn't one!
After 3... c5 black is already doing well. Or 3...dxc4 transposing to the queen's gambit accepted where white has ...

"Fair points from an engine perspective! But it's not just a random push - it has a concrete setup behind it.

The plan for White is straightforward: follow up immediately with 4. Bg2, pressure the a8-h1 diagonal, and force Black to solve practical problems rather than standard Queen's Gambit theory.

1. Against 3...c5 4. Bg2: If Black strikes the center, White opens the diagonal via cxd5 and looks for tactical motifs like Qa4+ or Qb3 targeting b7 while Black's bishop is forced away from defending the queenside.
2. Against 3...dxc4 4. Bg2: White gets open lines for development, a monster bishop on g2, and easy space expansion with e4 or g5 pushing any prospective knight on f6.

In Blitz, forcing opponents to calculate unstudied tactical tactical nuances on move 4 works surprisingly well, even if Stockfish gives -0.5."