Four Knights Game: Complete Repertoire

8. Tarrasch Pin Trap (8.Bg5 h6 9.Bh4 g5 10.Nxg5!)

One of the most destructive traps in classical theory: if Black tries to kick the pin with h6 and g5, White sacrifices the knight on g5, opening attacking files for the queen toward an unstoppable mate.

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 Bxc3 7.bxc3 d6 8.Bg5 h6 9.Bh4 g5 10.Nxg5

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...Bb4 – The symmetrical Double Ruy Lopez: Black responds in kind by developing the bishop to b4, pinning the c3-knight protecting the white monarch.
  9. 5.O-O – Rapid kingside castling: White’s king secures absolute safety, untangling the f1-rook to contest strategic operations along the semi-open e-file.
  10. 5...O-O – Black also ushers their king into safety with short castling; the position remains mirror-like, yet White retains the valuable first-move initiative.
  11. 6.d3 – Solid consolidating thrust: White firmly anchors the e4-pawn and opens the c1-h6 diagonal for the dark-squared bishop, preparing the pin with Bg5.
  12. 6...Bxc3 – In the Tarrasch trap, Black trades the bishop on c3 trying to close the position, but gifts White the overwhelmingly potent bishop pair.
  13. 7.bxc3 – Solid recapture toward the center: the b-pawn bolsters d4 and gives White uncontested dominion over open lines on the queenside and in the center.
  14. 7...d6 – Black attempts to shore up e5 with d6, but their pawn structure remains rigid and vulnerable to the impending pin from White’s active forces.
  15. 8.Bg5 – Suffocating pin: the bishop emerges to g5, binding the f6-knight inextricably to the d8-queen and preparing the decisive central breakthrough.
  16. 8...h6 – Black tries to kick the bishop with h6, naively hoping to break the pin without recognizing the fatal tactical disaster looming over them.
  17. 9.Bh4 – Impeccable retreat: the bishop steps back to h4 preserving the deadly pin on the f6-knight, inviting Black into an irreversible blunder.
  18. 9...g5 – Tarrasch’s fatal blunder! Black impulsively pushes g5 to dislodge the bishop, completely gutting their king’s shelter and walking into disaster.
  19. 10.Nxg5 – Destructive thematic sacrifice! White sacrifices the knight on g5 ripping open Black’s king; after 10...hxg5 11.Bxg5, Black's collapse is sealed.

How to exploit the position

Lethal pin on the f6-knight through the active bishop sortie 8.Bg5

Master tips

The classic king-shield sacrifice

Pushing g5 in front of one's castled king is almost always tactical suicide: two pawns and an overwhelming attack far exceed a knight.

Model games