Chessy
King's Gambit Accepted: Cunningham Defense: 4.d4 – Playing as Black
After 1.e4 e5 2.f4 exf4 3.Nf3 Be7 4.d4 Bh4+, you have reached a sharp crossroads in the King's Gambit Accepted. The bishop check on h4 is the hallmark of the Cunningham Defense, and as Black you are already doing very well. Stockfish evaluates the position at -0.72 — a clear edge for Black — and across nearly 288,000 games in the Lichess database Black scores an impressive 58.2%. The position looks aggressive, but the real question is how White handles your check. Most White players make a mistake here, and this page will show you exactly how to punish them.
Play the King's Gambit Accepted: Cunningham Defense: d4 against the engine
Free, no signup — you play black, the engine adapts to your level.
Try the interactive drill below — play 4…Bh4+ against a adapting engine and practise converting Black's advantage from the most common White mistakes.
Create a free account →The Engine's Verdict on 4…Bh4+
The Cunningham Defense with d4 reaches a position where White has four main ways to deal with your check, but only one of them keeps the game balanced. Stockfish rates this -0.72, a comfortable advantage for Black. That means you are clearly doing your job so far — you have seized the initiative, disrupted White's development, and forced the opponent to make a difficult king move decision. The engine's best continuation is Kd2, followed by d6, c3, and Nf6. That's the line White should play to keep the disadvantage manageable. The good news? In practice, most White players do not find this move.
White's Most Common — and Worst — Replies
From the 287,781 games in the database, White's move choices break down as follows: - Ke2 (164,446 games — the most popular choice): White scores only 45.5%. This is an inaccuracy, losing roughly 0.8 pawns compared to the best move. - g3 (56,877 games): White scores just 33.6%. This is also an inaccuracy, losing about 0.7 pawns. - Nxh4 (49,969 games): White scores a miserable 23.8%. This too is an inaccuracy, losing about 0.7 pawns. - Kd2 (only 16,489 games — the rarest of the main options): White scores 45.6%. This is the only reasonable move, and yet it is almost never played. The vast majority of White players choose an inaccurate move. Your job as Black is to be ready for those mistakes.
How to Punish Each White Mistake
Each of White's inaccurate moves has a different flavour, but all of them leave you with a lasting advantage. If White plays Ke2, the king steps onto the e-file, blocking the bishop on f1 and leaving the king exposed. Your pieces develop with tempo — prepare to castle quickly, open the centre, and make the king's walk a liability. If White plays g3, they try to trap your bishop on h4 — but this weakens the kingside dark squares and costs time. Simply retreat the bishop and enjoy your extra pawn and superior development. If White plays Nxh4, they trade a knight for your bishop. That might look like a simplification, but you have won the pawn on f4 and retained better piece activity. In all three cases, you are not just equal — you are the one pushing for a win.
Why the Cunningham Defense with d4 Suits You
This line of the King's Gambit Accepted is perfect for club players who enjoy having a clear plan from the opening. You have grabbed a pawn, you have checked the White king out of the safety of the kingside, and you know that most White opponents will misstep immediately. The middlegame that follows features an exposed White king and a pawn-up Black position — an ideal recipe for attacking chess. There is no need to memorise long forced lines. The key is simply knowing that 4…Bh4+ is already a strong move, and being ready to react correctly to whatever White does. The drill below will give you the practice you need to turn this edge into full points.
Results across 287,781 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| Ke2 | 164,446 | 45.5% |
| g3 | 56,877 | 33.6% |
| Nxh4 | 49,969 | 23.8% |
| Kd2 | 16,489 | 45.6% |
Frequently asked questions
Is 4…Bh4+ a good move in the King's Gambit Accepted?
Yes, it is excellent. The engine gives -0.72 in Black's favour, and Black wins 58.2% of games from this position in the Lichess database. The bishop check forces White to deal with an immediate threat, and most White players mishandle it.
What is the best move for White against 4…Bh4+?
The engine recommends Kd2, moving the king forward. It looks awkward but it is the only move that limits Black's advantage to roughly -0.7. After Kd2 the suggested follow-up is d6, c3, and Nf6. White should not play Ke2, g3, or Nxh4 — all three are inaccuracies.
Why do most White players lose after 4…Bh4+?
Because the overwhelming majority of games see White choose Ke2, g3, or Nxh4, all of which are inaccuracies according to the engine. Ke2 is by far the most common — it scores only 45.5% for White. Each of these moves costs White roughly 0.7 to 0.8 pawns in evaluation, giving Black a lasting advantage.
How should Black continue after White plays g3?
g3 attacks your bishop on h4, but it is a mistake. Simply retreat the bishop along the h4–d8 diagonal or to a safe square. You keep the extra pawn on f4 and can continue developing normally. White has weakened the kingside dark squares and lost time.