ECO A42 · Modern Defense

Modern Defense: Randspringer Variation

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 f5

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White to move. The arrow shows Stockfish’s best move.
Best move

5. exf5+0.95

White is clearly better. Stockfish 18, depth 18.

Analyze this position

In the Modern Defense: Randspringer Variation (A42), reached after 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 f5, Stockfish 18 recommends 5. exf5 for White. White is clearly better (+0.95).

Top engine moves

  1. +0.955. exf5 Bxf5 6. Nf3 Nf6 7. h3 O-O 8. g4 Be4 9. Bg2 e6
  2. +0.805. Nf3 fxe4 6. Nxe4 Nf6 7. Bd3 O-O 8. O-O Bg4 9. Neg5 e5
  3. +0.665. Be2 fxe4 6. Nxe4 Nf6 7. Nxf6+ Bxf6 8. Nf3 O-O 9. Bh6 Re8

Frequently asked questions

What is the best move in the Modern Defense: Randspringer Variation?
After 1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 f5, Stockfish 18 at depth 18 recommends 5. exf5 for White, continuing Bxf5 6. Nf3 Nf6 7. h3 O-O 8. g4 Be4 9. Bg2 e6. White is clearly better (+0.95). The next best moves are 5. Nf3 (+0.80) and 5. Be2 (+0.66).
Is the Modern Defense: Randspringer Variation a good opening?
Stockfish rates the position at +0.95: white is clearly better. Evaluations this early in the game are small, so practical results depend far more on knowing the plans and typical structures than on the engine's number.
What is the ECO code of the Modern Defense: Randspringer Variation?
A42. ECO codes classify chess openings from A00 to E99; A is the volume for flank openings.

Opening names from the Lichess opening book (CC0). Pieces by Colin M.L. Burnett (GPLv2+).