Chessy
The Ponziani Opening: Jaenisch Counterattack with 4.Qc2 – Playing Black
The Ponziani Opening (1.e4 e5 2.Nf3 Nc6 3.c3) looks harmless, but White is trying to build a big centre with c3 followed by d4. When they play 4.Qc2, they protect the e4-pawn and threaten d4 — but the move has a serious downside. After 4...d5!, you strike immediately in the centre, and the statistics tell a striking story: across nearly 82,000 games, Black wins 51.4% of the time, while White only wins 45.2%. Better yet, Stockfish evaluates the position at -0.41, a small edge for Black. That means you are already slightly better — if you know how to follow up. The interactive drill below will sharpen your instincts for this exact position.
Play the Ponziani Opening: Jaenisch Counterattack: Qc2 against the engine
Free, no signup — you play black, the engine adapts to your level.
Ready to put this into practice? Play through the key responses to 5.exd5 and 5.Bb5 in the interactive drill below, and see how your advantage grows with each正確
Create a free account →What Black Is Fighting For
The move 4...d5 is the whole point of the Jaenisch Counterattack. You challenge White's centre immediately, exploiting the fact that their queen on c2 is awkwardly placed. After the opening moves 1.e4 e5 2.Nf3 Nc6 3.c3 Nf6 4.Qc2 d5, both sides have developed one piece and White's queen is doing a job a knight or pawn could handle. The trade-off is clear: White has a solid pawn chain but lagged development, while Black has struck first in the centre with active pieces. Your light-squared bishop and queen will soon have nice diagonals, and White has to figure out what to do with that queen on c2. This is a position where knowing one or two good responses is enough to keep the pressure on for the rest of the game.
The Engine's Best Move: 5.d3
Stockfish's top recommendation for White is 5.d3, which prepares to develop the king's bishop to e2 and stabilise the centre. The engine's suggested follow-up is d3 h6 Be2 Bd6 — a quiet, solid line where White tries to play a slow game. Notice that 5.d3 actually scores well for White in practice (50.9%), so if you face this move, don't expect fireworks. Your job is simple: develop naturally, keep your slight edge, and remember that Black's winning percentage from this position is healthy. You don't need to force a win immediately; the position already favours you.
The Most Popular Trap: 5.exd5
By far the most common move in the database is 5.exd5, played in over 44,000 games — more than half of all encounters. That's good news for you, because the engine marks it as an inaccuracy that loses about 0.7 pawns. The statistics confirm the trouble: White scores just 43.1% after this capture. After 5.exd5, Black recaptures with ...Qxd5 and White's queen on c2 is suddenly a target. Black's pieces spring to life while White struggles to catch up in development. If your opponent plays 5.exd5, you have a clear path to a very comfortable game.
Mistakes to Punish
Beyond 5.exd5, White has several other inviting errors. 5.Bb5 is even worse — a full mistake costing roughly 1.4 pawns, and White scores only 43.5% after it. Black can pin the knight and prepare ...dxe4, opening lines against the exposed white queen. 5.d4 is another inaccuracy (losing about 0.5 pawns), and White's score after this move is a poor 43.1%. Meanwhile, 5.Bd3 and 5.h3 both lead to below-43% scoring for White. The pattern is clear: White's queen on c2 tempts them into natural-looking moves that actually worsen their position. Your task is to recognise these opportunities and play actively.
Results across 81,868 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| exd5 | 44,229 | 43.1% |
| d3 | 22,518 | 50.9% |
| Bb5 | 7,877 | 43.5% |
| d4 | 4,161 | 43.1% |
| Bd3 | 2,073 | 42.5% |
| h3 | 248 | 38.7% |
Frequently asked questions
Is the Ponziani Opening good for White?
The Ponziani is a tricky surprise weapon, but after 4.Qc2 d5! Black already stands slightly better (Stockfish -0.41). In practice, Black wins 51.4% of games at this point, so White has to know what they are doing to avoid ending up worse.
What is the best response to 4.Qc2 in the Ponziani?
The strongest reply is 4...d5, which immediately challenges White's centre. This is the Jaenisch Counterattack, and it exploits the queen's awkward placement on c2. The database shows Black scores well after this move, especially if White captures on d5.
How should I play if White plays 5.d3 against me?
5.d3 is White's best move, preparing to develop safely. The engine suggests a follow-up of h6 Be2 Bd6. Stay solid, develop your pieces, and don't force matters. Black's slight edge remains, so patient development is all you need.
What happens if White plays 5.exd5?
5.exd5 is an inaccuracy that loses about 0.7 pawns. Black recaptures with the queen (5...Qxd5), and White's queen on c2 becomes a target. Black's pieces become very active, and White scores only 43.1% from this position.