Chess Openings Lab
a8b7c6d5e4f3g2h1

Petrov's Defense: Damiano Variation

The Damiano Variation is 3.Nxe5 Nxe4, where Black copies White's capture at once instead of first kicking the knight with ...d6. White exploits the open e-file with 4.Qe2, while Black has to find 4...Qe7 to avoid losing material.

Moves
1.e4 e5 2.Nf3 Nf6 3.Nxe5 Nxe4
ECO
C42
Engine
+0.77 · a clear edge for White (Stockfish 17.1, depth 20)
Played
3,905 games in our lichess sample
White scores
59.6%

Key ideas for both sides

White

  • Play 4.Qe2. It attacks the e4 knight along the e-file and sets up discovered checks with the e5 knight.
  • If Black answers with ...Nf6, Nc6+ uncovers check from the queen and wins Black's queen on d8.
  • After 4...Qe7 take with 5.Qxe4 and meet ...d6 with d4, keeping an extra pawn after the exchanges on e5.
  • The calm 4.d4 or 4.d3 also keep a small edge without forcing play.

Black

  • After 4.Qe2 play ...Qe7. It is the only move that holds the e-file and keeps material level for now.
  • After 5.Qxe4 strike with ...d6, attacking the pinned knight on e5 to win the piece back.
  • Develop with ...Nc6 to hit the e5 pawn and get ready for ...Bd7 or ...Be6.
  • Never retreat the knight from e4 while White's queen and knight sit on the e-file in front of your king.

Plans and pawn structure

After 4.Qe2 Qe7 5.Qxe4 d6 6.d4 dxe5 7.dxe5, White has an extra pawn on e5 and both queens face each other on the e-file. White wants to keep that pawn with Bf4 and Nc3, finish development and trade queens. Black hopes ...Nc6, ...Bd7 and active rooks bring enough play to regain e5. If Black wins it back, the game is level; if not, White grinds an endgame.

What the engine plays from here

Stockfish 17.1 at depth 20 rates the position +0.77: a clear edge for White. Its three top choices for White:

  1. +0.77 4.Qe2 Qe7 5.Qxe4 d6 6.d4 dxe5
  2. +0.36 4.d4 d5 5.Nd2 Bd6 6.Bd3 Nf6
  3. +0.21 4.d3 Nf6 5.d4 d6 6.Nf3 d5

Pawns, from White's side.

How it scores on lichess

3,905 rated lichess games reached this position; White scored 59.6%.

under 120061.6%
1200–159961.4%
1600–199954.0%
2000 and up44.8%

Light: White wins. Grey: draws. Dark: Black wins. About the sample.

Traps and pitfalls

Petrov Defense queen trap (White sets it)

Black copies White with 3...Nxe4 in the Petrov, and 4.Qe2 puts the queen on the e-file. When the attacked knight retreats with 4...Nf6, 5.Nc6+ is a discovered check that also attacks the black queen.

a8b7c6d5e4f3g2h1

The Petrov Defense queen trap explained

Where it goes next

How to play against it

As White, play 4.Qe2 and know the trap: after ...Nf6, Nc6+ wins Black's queen with a discovered check. After 4...Qe7 5.Qxe4 d6, recapture with d4 and keep the e5 pawn safe. Do not rush to trade queens until the pawn is secure.

Questions

What are the moves of the Petrov's Defense: Damiano Variation?

The Petrov's Defense: Damiano Variation starts 1.e4 e5 2.Nf3 Nf6 3.Nxe5 Nxe4. Its ECO code is C42.

Is the Petrov's Defense: Damiano Variation good for Black?

Stockfish 17.1 rates the position +0.77 at depth 20, which is a clear edge for White. In 3,905 lichess games from our sample, White scored 59.6%. An inaccurate line for Black that club players fall into, while White only needs to know 4.Qe2 and the Nc6+ trick.

What is the main idea of the Petrov's Defense: Damiano Variation?

Black takes back on e4 too early, before kicking the knight with ...d6. White's 4.Qe2 exploits the e-file: Black must play ...Qe7, and White comes out with an extra pawn and the easier position.

What should White play next?

The engine's first choice is Qe2, with d4 and d3 close behind. 4.Qe2 attacks the knight on e4 down the e-file and sets up a discovered check.

Updated October 2026. Sources and method.