Chess Openings Lab
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Pirc Defense: Roscher Gambit

The Roscher Gambit is 3.Nf3 against the Pirc, developing the knight and leaving e4 unprotected. White hopes for quick development and an attack after Black takes, while Black can simply grab the pawn with 3...Nxe4 and keep it.

Moves
1.e4 d6 2.d4 Nf6 3.Nf3
ECO
B00
Engine
−0.69 · a slight edge for Black (Stockfish 17.1, depth 20)
Played
1,003 games in our lichess sample
White scores
46.4%

Key ideas for both sides

White

  • After 3...Nxe4, play 4.Bd3 to chase the knight and 5.O-O, as in the engine's top line.
  • Use c4 and Nc3 to build space and develop with gain of time against the retreated f6 knight.
  • If Black declines with ...c5 or ...e5, Nc3 transposes to normal open play with no material down.
  • Keep pieces active and look for Re1 against the e-file before Black finishes castling.

Black

  • Take with 3...Nxe4. It is the engine's top choice and wins a clean pawn.
  • Retreat with ...Nf6 when hit, then fianchetto with ...g6 and ...Bg7 and castle short.
  • If you prefer to avoid theory, 3...c5 or 3...e5 are sound but give back the free pawn.
  • Do not rush the queen out; quiet development keeps the extra pawn safe.

Plans and pawn structure

This is a dubious gambit for White: 3.Nf3 simply drops e4 for some development. After 3...Nxe4 4.Bd3 Nf6 5.O-O, Black plays ...g6, ...Bg7 and ...O-O, then can think about ...c5 or ...e5 to challenge d4. White's compensation is a lead in development and the open e-file after Re1, plus space from c4 and Nc3. If Black castles safely, the extra pawn should tell in the long run. If Black declines, the game becomes a normal open position with chances for both.

What the engine plays from here

Stockfish 17.1 at depth 20 rates the position −0.69: a slight edge for Black. Its three top choices for Black:

  1. −0.69 3...Nxe4 4.Bd3 Nf6 5.O-O g6 6.c4
  2. +0.20 3...c5 4.Nc3 cxd4 5.Nxd4 a6 6.Bg5
  3. +0.57 3...e5 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O

Pawns, from White's side.

How it scores on lichess

1,003 rated lichess games reached this position; White scored 46.4%.

under 120048.3%
1200–159946.2%
1600–199945.0%
2000 and up46.9%

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

How to play against it

Accept the gambit with 3...Nxe4. Answer Bd3 with ...Nf6, then play ...g6, ...Bg7 and castle. Avoid grabbing more material or making extra queen moves before your king is safe, because that is the only way White gets real play. If you would rather avoid the debate, 3...c5 also gives a fine game.

Questions

What are the moves of the Pirc Defense: Roscher Gambit?

The Pirc Defense: Roscher Gambit starts 1.e4 d6 2.d4 Nf6 3.Nf3. Its ECO code is B00.

Is the Pirc Defense: Roscher Gambit good for White?

Stockfish 17.1 rates the position −0.69 at depth 20, which is a slight edge for Black. In 1,003 lichess games from our sample, White scored 46.4%. A surprise weapon for White that a calm Black player refutes by taking the pawn and developing, so it suits fast games more than serious ones.

What is the main idea of the Pirc Defense: Roscher Gambit?

White offers the e4 pawn for development with 3.Nf3. Black's best reply is to take with ...Nxe4, retreat the knight when hit, fianchetto and castle, keeping a sound extra pawn.

What should Black play next?

The engine's first choice is Nxe4, with c5 and e5 close behind. 3...Nxe4 grabs the unprotected pawn, and after Bd3 the knight retreats to f6 with Black simply a pawn up.

Updated October 2026. Sources and method.