Vienna Game
1.e4 e5 2.Nc3 Nf6 3.d4!?
This early central advance, reminiscent of the Centre Game (1.e4 e5 2.d4) scores 59% in ChessBase's 2026 Mega database, the same as the main move 3.f4, and up to 11 percentage points better than the other popular continuations, 3.Bc4, 3.Nf3 and 3.g3.
3...exd4 4.Qxd4 Nc6 5.Qd3!?
This is the main continuation, upping White's score in Mega26 to 62%.
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5...Bb4
This is the commonest continuation in the Centre Game, after the moves 1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 Nf6 5.Nc3, and it is also the commonest continuation in this line of the Vienna, but after it White's score in Mega26 climbs to 67%. Stockfish18 and Dragon1 suggest 5...Bc5 or 5...d5!?, one point being 5...d5!? 6.exd5 can be met by 6...Nb4.
6.Bd2 0-0 7.Nge2!?
Stockfish18 marginally prefers the much more common 7.0-0-0, but Dragon1 fluctuates between the two moves.
7...Re8 8.0-0-0
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White has the only pawn on the fourth rank, but, as is often the case with opposite-side castling, the position is both tricky to assess and to play. The engines reckon chances are equal.
8...Qe7?!
But not anymore! The engines suggest 8...Ne5 or 8...d6.
9.Bg5!
Moving the bishop for the second time, but it is worth it as the pin is hard to meet.
9...Ne5?!
Apparently a novelty, and probably not a good one, although it does come to be the engines' second choice, at least for a while, behind getting out of the pin immediately with 9...Qe6, after which the engines suggest another apparent-novelty in 9...f3!?, claiming White has at least the upper hand, a sample line running 10.Bh4 Ne5 11.Qd4!? Ba5 12.Qa4!? Qb6, reaching a position where the engines disagree as to how White should proceed, but agree White is winning.
10.Qg3
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10...Bxc3!?
The engines suggest 10...c6, but reckon 11.a3!? (as well as 11.f4) is very strong, one line running 11...Bxa3!? 12.Bxf6!? Bxb2+ 13.Kxb2 Qxf6 14.Nd4, when Black does not seem to have enough for a knight. Alternatively, 11...Bc5 12.f4 Neg4!? 13.e5 d5!? 14.Bxf6!? Nxf6 15.exf6 Qxf6 also leaves Black significantly down on material.
11.Nxc3 Qe6 12.f4!?
This seems even stronger than 12.Bxf6 Qxf6 13.Nd5 Qd8 14.f4.
12...Nc6 13.e5 Nh5 14.Qf3 h6!?
Giving up a pawn to keep the game going, as 14...g6?! 15.g4 Ng7 16.Nd5 is horrendous.
15.Qxh5 gxh5 16.Qxg5
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White is roughly the equivalent of being up a piece and a pawn, according to the engines.
16...Nb4!?
If 16...d6, then 17.Nd5.
17.Kb1 d6 18.a3 a5!?
Desperation, but the game is lost anyway.
19.axb4 axb4 20.Nd5 dxe5 21.Qxe5 Qd7
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22.Nf6+?
White has several strong moves, the most convincing being 22.Qg5 and 22.Bb5!?, eg 22.Qg5 Qa4!? 23.Nf6+ Kf8 24.Qc5+ Re7 25.Rd8+ Qe8 26.Rxe8#, or 22.Bb5!? c6 23.Nb6 Rxe5 24.Rxd7 Bxd7 25.fxe5.
22...gxf6 23.Rxd7 fxe5 24.Rxc7
PK offered a draw.
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Stockfish18 reckons the game is completely equal after 24.Ra5 or 24.exf4. Dragon1 is less convinced, but reckons White has no more than the better part of equality.
½–½
