Chessy
The Queen's Gambit Declined: Queen's Knight Variation — Why 4.cxd5 Works for You
After 1.d4 d5 2.c4 e6 3.Nc3 c5, you as White have a choice: keep the tension or capture. Statistically, 4.cxd5 is your strongest path. Across over 420,000 games on Lichess, White scores 52.1% from here — a healthy winning percentage. The engine rates the position +0.43, a small plus for you, meaning you are slightly better. The best reply from Black is exd5, leading into a clean Queen's Gambit Declined structure where your space advantage and development give you a comfortable game. Let's see what the data says about your best move and how to punish Black if they slip.
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Create a free account →The Main Line After 4.cxd5
When Black answers 4.cxd5 with exd5, the engine recommends you continue 5.Nf3 Nc6 6.g3. This setup is solid and natural: you develop your kingside, prepare to fianchetto your light-squared bishop, and maintain pressure on Black's centre. With over 347,000 games played from the exd5 position, White scores 52.3% — your best result out of all Black's options. The structure that arises (isolated queen's pawn for Black, space advantage for you) is a classic middlegame theme worth understanding. The engine's principal variation continues 5.Nf3 Nc6 6.g3, maintaining pressure on Black's centre while preparing kingside development.
The Critical Statistic: White Wins 52.1%
Sometimes an opening statistic tells you everything. From this position, across 422,159 games, White wins 52.1% of the time, with only 4.2% draws and Black winning 43.6%. White wins 52.1% and Black wins only 43.6%, a clear asymmetry that confirms you are playing for an edge, not just hoping for equality. The +0.43 engine evaluation backs this up: you are slightly better. When you face Black's most popular reply (exd5), your winning percentage actually ticks up to 52.3%, making this the most reliable path in the variation.
Black's Three Biggest Mistakes — and How You Punish Them
The data is clear about which Black moves to welcome. If Black plays Nc6, it's a blunder costing roughly 3.1 pawns. The engine says exd5 was much better. Your task is straightforward: capture on d5 and enjoy a dominating centre. If Black tries c4, that's a mistake (worth about 2.9 pawns to Black). You can capture en passant or simply develop with gain of time — your extra central control will tell. And if Black plays Qb6, it's a smaller mistake (about 1.2 pawns), but you still come out ahead by continuing with your natural plan. The lesson: when Black avoids exd5, you are almost certainly getting the better of the exchange.
What About 4…cxd4?
Black's second-most popular reply is 4…cxd4, seen in nearly 67,000 games. Here White scores 50.1% — essentially equal. This line can lead to sharp play where Black tries to hold onto the pawn. While it's not a mistake, it's also not a problem for you: the engine still prefers the position for White after proper play. Your typical plan involves centralising and maintaining development pressure. The drop from 52.3% (after exd5) to 50.1% is real, but you are far from worse — just be ready for a more tactical fight compared to the solid main line.
Results across 422,159 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| exd5 | 347,342 | 52.3% |
| cxd4 | 66,920 | 50.1% |
| Nf6 | 4,090 | 50.4% |
| Nc6 | 1,029 | 78.2% |
| c4 | 604 | 68.2% |
| Qb6 | 450 | 57.6% |
Frequently asked questions
Is 4.cxd5 the best move for White in this position?
Yes. The engine evaluates 4.cxd5 at +0.43, a small edge for White, and it's the move played in the vast majority of games. Black's best reply is exd5, leading to a comfortable Queen's Gambit Declined structure where White scores 52.3%.
What happens if Black plays 4…cxd4 instead of recapturing on d5?
Black's second-most popular option is 4…cxd4, played in about 67,000 games. White scores 50.1% in this line — it's close to equal but the engine still slightly prefers White. Expect a sharper, more tactical game than the main line with exd5.
Which Black moves should I watch out for as traps?
According to the statistics, 4…Nc6 is a blunder costing Black about 3.1 pawns, and 4…c4 is a mistake worth about 2.9 pawns. Even 4…Qb6 is a mistake (losing ~1.2 pawns). When Black plays any of these, you come out clearly better if you respond accurately.
How often does White win from this position in practice?
Across more than 422,000 games on Lichess, White wins 52.1%, draws 4.2%, and Black wins 43.6%. White wins 52.1% against Black's 43.6%, a strong practical edge for you as White.