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Kasparov's Octopus Knight (1985)

Anatoly Karpov vs Garry Kasparov · World Championship (Game 16), Moscow, 1985 · Sicilian Defence · 0–1

16. Rad1
16...Nd3!! The 'octopus'. The knight settles deep in White's position, where it can't be driven away and ties down Karpov's pieces for the next eighteen moves.
Anatoly Karpov vs Garry Kasparov

Moscow, 1985. In game 16 of his title match against Anatoly Karpov, the 22-year-old Garry Kasparov sacrificed a pawn in the opening to plant a knight on d3 — an 'octopus' whose tentacles strangled White's whole position. It sat there from move 16 to move 34, when Karpov finally had to give up his queen to remove it. Chess Informant readers later voted it one of the greatest games ever played; Kasparov went on to win the match and the title.

The lesson

A single dominant piece deep in the enemy camp can be worth more than a pawn — or even an exchange. Kasparov's knight on d3 tied down Karpov's pieces for nearly twenty moves while Black built up everywhere else. Positional domination, not immediate tactics, decided the game.

Move by move

8… d58...d5! Kasparov strikes in the centre, willing to give up a pawn for piece activity and the initiative — the modern, dynamic Sicilian.
10… Nb410...Nb4 heads for the d3 outpost, the square that will define the entire game.
16. Rad116...Nd3!! The 'octopus'. The knight settles deep in White's position, where it can't be driven away and ties down Karpov's pieces for the next eighteen moves.
17… h618.Bh4 — Karpov tries to untangle, but the d3-knight cramps everything he wants to do.
21… g521...g5! Kasparov expands on the kingside, using his free hand while the octopus keeps White tied down.
28… g428.d6 — Karpov pushes the passed pawn to create counterplay, but Kasparov has calculated through the complications.
32. Kh132.Kh1 — White's king is uneasy and his pieces are still half-paralysed by the knight on d3.
34. Qxd334.Qxd3 — Karpov finally gives up his queen to remove the octopus; but now Black's pieces flood in.
34… Nf2+34...Nf2+! The point — a fork that wins material and keeps the initiative after the queen is gone.
40. Nxd140...Re1+ — the finish. Karpov resigned; Black's pieces are decisive. The octopus knight had done its work.

Frequently asked

What is the 'octopus' knight?

It's Kasparov's knight on d3 — a piece planted so deep in White's position that its influence reached in every direction like an octopus's tentacles. It could not be removed without huge concessions, and it paralysed Karpov's pieces for nearly twenty moves.

Why is this game so celebrated?

Chess Informant readers voted it one of the greatest games of its era. It is a perfect demonstration of how a single dominant piece and long-term positional pressure can outweigh material — and it helped Kasparov win the world title at 22.

Can I try the key move?

Yes — take the board as Kasparov at move 16 and try to find the octopus knight, or replay the whole game move by move, no sign-up.

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