Four Knights Game: Complete Repertoire

2. Countering the Rubinstein Variation (4...Nd4 5.Ba4 Bc5)

Akiba Rubinstein introduced 4...Nd4 to unsettle the solid Spanish. White responds with the accurate retreat 5.Ba4, accepts the e5-pawn, and repels all attacks with Nd3 and Ne3.

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Nd4 5.Ba4 Bc5 6.Nxe5 O-O 7.Nd3 Bb6 8.e5 Ne8 9.Nd5 d6 10.Ne3 c5 11.c3 Nf5

Move by move

  1. 1.e4 – The initial king's pawn push opens diagonal pathways for both the queen and the dark-squared bishop, staking an immediate claim in the center on e4.
  2. 1...e5 – Black’s classical symmetrical reply: occupies central space on e5, prevents further white expansion with e4, and unlocks diagonals for pieces.
  3. 2.Nf3 – Classical development with a direct threat: the knight attacks the undefended e5-pawn while initiating rapid mobilization toward kingside castling.
  4. 2...Nc6 – The most natural and solid defense: the knight protects the e5-pawn, controls the d4 and b4 squares, and develops a minor piece into the fray.
  5. 3.Nc3 – The Three Knights Game: White brings out the second knight, fortifying e4 and preparing to fight for asymmetric central control with a future d4.
  6. 3...Nf6 – The Four Knights Game! Black develops their final knight, counter-attacking e4 and establishing a position of complete and harmonious symmetry.
  7. 4.Bb5 – The Spanish Four Knights! The bishop sorties aggressively to b5, pinning the c6-knight, indirectly targeting e5, and preparing quick castling.
  8. 4...Nd4 – The feared Rubinstein Variation! Black breaks symmetry by leaping to d4, hitting the b5-bishop and offering immediate tactical central complications.
  9. 5.Ba4 – Prophylactic retreat: White refuses to part with the bishop pair and retains the piece on a4, keeping long-term control of the a4-e8 diagonal.
  10. 5...Bc5 – Aggressive development of Black's bishop to c5 targeting f2, preparing castling, and attempting to counter White's upcoming central expansion.
  11. 6.Nxe5 – White accepts the challenge by snatching the e5-pawn with the knight, relying on accurate tactical calculation to dismantle Black's counterplay.
  12. 6...O-O – Rapid castling by Black to tuck the king into safety and activate the f8-rook along the open e-file against White’s advanced central knight.
  13. 7.Nd3 – The knight prudently steps back to d3, attacking the c5-bishop while simultaneously reinforcing f2 against any dangerous tactical sacrifices.
  14. 7...Bb6 – The bishop drops back to the solid b6-square to maintain the a7-g1 diagonal, but grants White time to build a lethal central pawn advance.
  15. 8.e5 – Aggressive central push! The e5-pawn assaults the f6-knight, severing Black’s lines of communication and inflicting a severe spatial cramp.
  16. 8...Ne8 – The knight is forced into a dismal retreat back to its starting square e8, leaving Black’s pieces completely congested and lacking coordination.
  17. 9.Nd5 – Attacking central incursion: White’s knight seizes the d5 outpost, dominating the board and directly targeting Black’s vulnerable c7-pawn.
  18. 9...d6 – Black fights back in the center with 9...d6, attempting to shake off the cramp of the e5-pawn and open escape avenues for the c8-bishop.
  19. 10.Ne3 – Masterful regrouping: the knight hops from d5 to e3, solidifying the center, guarding f5, and cementing White’s clean extra central pawn.
  20. 10...c5 – Black tries to seize queenside space with c5, but irremediably surrenders the critical d5-square and weakens their light-squared defenses.
  21. 11.c3 – Fundamental reinforcement: White plays c3 to drive the d4-knight away and prepare the complete clearing of the center in their own favor.
  22. 11...Nf5 – The knight seeks refuge on f5 trying to harass e3, but White maintains total control over the position with a decisive strategic advantage.

How to exploit the position

Cautious retreat of the bishop to a4 preserving the bishop pair

Master tips

Neutralizing the counterattack

The Rubinstein Variation sacrifices a pawn for piece activity; White must consolidate without conceding tactical counterplay on f2.

Model games