The story behind the game
The tenth game of the 1921 world championship develops into a rook-and-knight ending. Capablanca’s rook reaches the first rank, the knight gains central squares, and the king eventually joins the work. Follow those separate improvements before judging the final pawn break: an active rook creates chances, but the other pieces must help turn them into progress.
Take these ideas to your next game
- An exchange can improve the structure and the remaining rook at the same time.
- Check en passant before assuming a two-square pawn advance has closed a file.
- A rook on the back rank needs a concrete target, not merely an impressive location.
- Bring the king into the ending before committing to a central pawn break.
Read the complete annotated game
Full game transcript, including the result and the answers. Original explanations by chessgames.info; game score from the sources below.
Capablanca plays 23...Rd5. The recorded exchange leaves a black pawn on d5 and the other black rook on the open c-file. Compare the position before and after Rxd5 and the pawn recapture. Black exchanges White’s active rook, replaces a c-pawn with a central pawn and keeps a rook that can work along an open file. This is a structural decision as well as a trade; use the saved alternatives to assess whether White should accept it.
The reply 37...hxg3 is en passant: the h4-pawn captures on g3 and removes White’s g4-pawn. En passant is available only on this reply. After the recorded fxg3, White has pawns on g3 and h3 and the f-file has been cleared of the f-pawn. Reconstruct that position rather than treating g4 as a permanent barrier. Black’s rook then enters on the second rank; the activity and the changed pawn targets must be evaluated together.
The recorded move was 43...Rb1, targeting b3. The saved analysis prefers …Nb4, gaining time against the d3-rook. Both moves try to use the active pieces, but the saved knight move makes a direct attack before the rook changes files. In the recorded continuation Black wins the b3-pawn; that outcome does not establish that the rook move was the strongest choice. Compare White’s best responses to the two plans in the saved lines.
Capablanca plays 64...e5, using the active king and central knight to support a change in the pawn structure. The recorded sequence exchanges the e-pawn on d4, brings the king to c5 and advances the remaining d-pawn. The rook and knight still matter: do not reduce the position to a generic king-and-pawn ending. The final position is a resignation, not a recorded checkmate; saved engine lines show continuations beyond the score.
Result: 0-1. The recorded score ends here; it does not imply checkmate.
Think through the turning points
Move 23: Offer an exchange with a purpose
How can Black challenge the active e5-rook while improving the central pawn structure? In the game: Rd5. Capablanca plays 23...Rd5. The recorded exchange leaves a black pawn on d5 and the other black rook on the open c-file. Compare the position before and after Rxd5 and the pawn recapture. Black exchanges White’s active rook, replaces a c-pawn with a central pawn and keeps a rook that can work along an open file. This is a structural decision as well as a trade; use the saved alternatives to assess whether White should accept it.
Engine-supported alternatives
Rd5 b3 Rxe5 dxe5 Ng6 h3 Rd8 Rxd8+ Qxd8 f4 Qd5 Kh2 · -0.51 · depth 18
Rb8 b3 · -0.31 · depth 18
Qa6 b3 Rd5 Rxd5 cxd5 Qd2 Nf5 · -0.32 · depth 17
Move 37: Notice the en passant capture
White has just advanced the g-pawn from g2 to g4. Which special capture changes the structure immediately? In the game: hxg3. The reply 37...hxg3 is en passant: the h4-pawn captures on g3 and removes White’s g4-pawn. En passant is available only on this reply. After the recorded fxg3, White has pawns on g3 and h3 and the f-file has been cleared of the f-pawn. Reconstruct that position rather than treating g4 as a permanent barrier. Black’s rook then enters on the second rank; the activity and the changed pawn targets must be evaluated together.
Engine-supported alternatives
Ra1+ Kg2 Nd6 Nc3 g5 Kf3 Rc1 Ke2 Rc2+ Ke1 Kf8 Re3 · -1.65 · depth 20
Nd6 Kg2 g5 Nc3 Ra1 Kf3 Rc1 Ke2 Rc2+ Ke1 f6 Re3 · -1.64 · depth 20
hxg3 fxg3 Nd6 Nc3 Rb6 Ne2 Kg7 Kf2 g5 Ke3 Ra6 Nc3 · -1.48 · depth 20
Move 43: Improve the knight with tempo
Black’s rook has reached c1. Which knight move attacks the rook on d3? Compare it with the recorded rook manoeuvre. In the game: Rb1. The recorded move was 43...Rb1, targeting b3. The saved analysis prefers …Nb4, gaining time against the d3-rook. Both moves try to use the active pieces, but the saved knight move makes a direct attack before the rook changes files. In the recorded continuation Black wins the b3-pawn; that outcome does not establish that the rook move was the strongest choice. Compare White’s best responses to the two plans in the saved lines.
Engine-supported alternatives
Nb4 Rd2 Rb1 Nb2 g5 Kf3 Kg7 Kg4 Kh6 Kf3 Nc6 Ke3 · -2.34 · depth 20
Rc2+ · -1.46 · depth 20
Rb1 Ke1 Na5 Kd2 Rxb3 Rxb3 Nxb3+ Kc3 Na5 h4 Kg7 Nf2 · -1.45 · depth 20
Move 64: Open the centre for the active king
Black’s king has reached d6 and the knight stands on e4. Which central pawn advance creates the next breakthrough? In the game: e5. Capablanca plays 64...e5, using the active king and central knight to support a change in the pawn structure. The recorded sequence exchanges the e-pawn on d4, brings the king to c5 and advances the remaining d-pawn. The rook and knight still matter: do not reduce the position to a generic king-and-pawn ending. The final position is a resignation, not a recorded checkmate; saved engine lines show continuations beyond the score.
Engine-supported alternatives
Nd2+ Ke1 Ne4 Kf1 e5 dxe5+ fxe5 Nf3 Nd2+ Nxd2 Rxd2 Rf3 · -3.60 · depth 20
e5 Ne2 Ra1+ Kg2 Re1 Kf3 Rd1 dxe5+ fxe5 Kg2 Re1 Kh2 · -3.51 · depth 20
Ke7 Rd3 Kd6 Ne2 e5 h4 Ra1+ Kg2 gxh4 Rh3 Re1 dxe5+ · -3.24 · depth 20
Every piece has a part to play.
The tenth game of the 1921 world championship develops into a rook-and-knight ending. Capablanca’s rook reaches the first rank, the knight gains central squares, and the king eventually joins the work. Follow those separate improvements before judging the final pawn break: an active rook creates chances, but the other pieces must help turn them into progress.
Look a little deeper
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Select a key moment to explore legal continuations supported by saved Stockfish analysis.
Accessible evaluation values & provenance
Stockfish 17.1 · 75,000 nodes per position; 1,000,000 at key moments. Actual depth 12–21. Positive centipawns favour White; mate scores remain separate. Selective search is evidence, not proof.
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