ECO A40 · Borg Defense

Borg Defense: Borg Gambit

1. d4 g5

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

2. Bxg5+1.89

White is winning. Stockfish 18, depth 18.

Analyze this position

In the Borg Defense: Borg Gambit (A40), reached after 1. d4 g5, Stockfish 18 recommends 2. Bxg5 for White. White is winning (+1.89).

Top engine moves

  1. +1.892. Bxg5 Bg7 3. Nc3 c5 4. d5 d6 5. Qd2 Qa5 6. e4 Nd7
  2. +1.482. e4 e6 3. Nc3 Nc6 4. d5 Ne5 5. h4 gxh4 6. f4 Ng6
  3. +1.482. Nc3 h6 3. e4 d6 4. h4 g4 5. Nge2 Bg7 6. Ng3 Nf6

Other move orders

  • 1. e4 g5 2. d4 Bg7

Frequently asked questions

What is the best move in the Borg Defense: Borg Gambit?
After 1. d4 g5, Stockfish 18 at depth 18 recommends 2. Bxg5 for White, continuing Bg7 3. Nc3 c5 4. d5 d6 5. Qd2 Qa5 6. e4 Nd7. White is winning (+1.89). The next best moves are 2. e4 (+1.48) and 2. Nc3 (+1.48).
Is the Borg Defense: Borg Gambit a good opening?
Stockfish rates the position at +1.89: white is winning. 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 Borg Defense: Borg Gambit?
A40. 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+).