Chess Opening Theory/1. e4/1...e5/2. Nc3/2...f5

Vienna Countergambit rd nd bd qd kd bd nd rd pd pd pd pd pd pd pd pd pl nl pl pl pl pl pl pl pl rl bl ql kl bl nl rl Vienna Countergambit This is simply a King's Gambit reversed, but with Nc3 added for White. This makes it not sound - opening the kingside when you have less development is not a good idea. Possible Moves 3. exf5—After Nf6 to prevent Qh4+, there is g4! immediately gaining initiative. Not only are we a pawn up, but Black's kingside is also quite weak, while our kingside is quite safe. This leads to lines in the Kings Gambit where we are not only a tempo up, we have developed the queen's knight. This means we have more control over d5. Why divert the white e pawn to the f5 square when even if you build a center with d5-e5, it will be very shaky? 3. Nf3? - This directly transposes to the Latvian Gambit Declined, it is not the best, but white can still get a position with more development than black after 3...fxe4, 4. Nxe5 Nf6 5. Bc4, and Stockfish 16 gives this a +0,7 advantage. However there is no reason to decline the pawn. 3. d4 - This has a slight similarity to the Falkbeer Countergambit in the King's Gambit, since black can't take the e4 pawn because of Qh5+!, instead, black should play exd4 and white should play Qxd4, but there is also the astonishing, exf5, if black plays dxc3, white will play Qh5+ after Ke7, Bg5+ and Nf6, white can just play the absurd-looking move O-O-O if black were to take the pawn, Kb1!, sacrificing yet a pawn, and black has to deal with a lot of attacking possibilities, after d5, Nf3, white's a attack is really strong.