Four Knights Game: Spanish Variation, Gunsberg Counterattack

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. Nd5 Nxd5 7. exd5 e4

Four Knights Game: Spanish Variation, Gunsberg Counterattack after 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. Nd5 Nxd5 7. exd5 e4 87654321abcdefgh

The Four Knights Game: Spanish Variation, Gunsberg Counterattack is a chess opening classified as ECO C49, reached after 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. Nd5 Nxd5 7. exd5 e4. It is a line of the Four Knights Game. White is to move.

This exact move order didn't appear in our sample of 12.6 million Lichess games: it's a rare line.

Engine evaluation: 0.00 (Stockfish, depth 40; best line 8. Ne1 Nd4 9. a4 Nxb5 10. axb5 c6)

ECO
C49
Moves
14 plies
FEN
r1bq1rk1/pppp1ppp/2n5/1B1P4/1b2p3/5N2/PPPP1PPP/R1BQ1RK1 w - - 0 8
PGN
1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. Nd5 Nxd5 7. exd5 e4

Analyse with Stockfish · Board image (SVG) · Open on Lichess

Master games

6 over-the-board games are classified under this line (White 33%, draw 50%, Black 17%). The strongest:

Search all games of the Four Knights Game: Spanish Variation, Gunsberg Counterattack and its sub-variations

Comes from

Petrov's Defense: Three Knights Game 1. e4 e5 2. Nf3 Nf6 3. Nc3

More Four Knights Game lines (all)

Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.