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Capablanca's Breakthrough at San Sebastian

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Jose Raul Capablanca won the 1911 San Sebastian tournament. Against Amos Burn, he turns a kingside pawn gain into a long ending in which his knight, rooks and passed pawns all have clear jobs.

On this page
  1. Critical decisions
  2. Replay with move-by-move board facts
  3. PGN
  4. Sources and checking
  5. Continue with another game
White
Jose Raul Capablanca
Black
Amos Burn
Event
San Sebastian
Year
1911
Result
1-0
Opening
C77 Ruy Lopez: Morphy Defense, Anderssen Variation

Opening reference: Ruy Lopez: Morphy Defense, Anderssen Variation (C77).

In this game, 20 half-moves are labelled opening, 68 middlegame and 3 endgame. The score contains 17 captures and 2 checks or mates; before a recorded move, the position offered a median of 30 legal choices. The source score ends after 46.g6 with the recorded result 1-0. Its termination tag was not retained, so this record does not infer whether the game ended by resignation, time or another cause.

Critical decisions

The daily trainer uses a short set of positions from this complete score. Each link goes to the exact half-move rather than only the numbered move.

  1. 11.dxe4 — Moves 9-11 — central tension in the Ruy11.dxe4 was a leading choice in the fixed engine check.
  2. 21.Qxh7+ — Moves 19-21 — Bxf6 and Qxh7+!21.Qxh7+ was a leading choice in the fixed engine check.
  3. 24.Nf5 — Move 24 — Nf5, the strong knight24.Nf5 was a leading choice in the fixed engine check.
  4. 31.g3 — Create pressure on f431.g3 was a leading choice in the fixed engine check.
  5. 45.bxc4 — Moves 44-46 — exchange on c4, pawn to g645.bxc4 was a leading choice in the fixed engine check.

Replay with move-by-move board facts

The board, fact panel and transcript use the same legal score. “Fixed engine check” means Stockfish 17.1, one thread, a fixed 25,000-node search and 3 candidate lines. It compares moves under one reproducible setting; it does not claim to reconstruct a player’s thoughts.

♜♞♝♛♚♝♞♜♟♟♟♟♟♟♟♟♟♟♟♟♟♟♟♟♜♞♝♛♚♝♞♜
Jose Raul Capablanca vs Amos Burn, 1911

Start position

Use Previous and Next on the board, or select a move in the transcript. The board fact and fixed engine check remain visible until you choose another move.

Opening · 1.e4 to 10...dxe4

  1. 1.e4 Claim central space

    Board fact: White moves the pawn from e2 to e4; from there it controls d5 and f5.

    Fixed engine check: Ranked first · e4 e5 Nf3 Nc6.

  2. 1...e5 Claim central space

    Board fact: Black moves the pawn from e7 to e5; from there it controls d4 and f4.

    Fixed engine check: Ranked first · e5 Nf3 Nc6 d4.

  3. 2.Nf3 Develop the knight

    Board fact: White develops the knight from g1 to f3; from f3 it attacks Black's pawn on e5.

    Fixed engine check: Ranked first · Nf3 Nc6 d4 exd4.

  4. 2...Nc6 Develop the knight

    Board fact: Black develops the knight from b8 to c6; from there it controls d4 and e5.

    Fixed engine check: Ranked first · Nc6 d4 exd4 Nxd4.

  5. 3.Bb5 Develop the bishop

    Board fact: White develops the bishop from f1 to b5; from b5 it attacks Black's knight on c6.

    Fixed engine check: Ranked first · Bb5 a6.

  6. 3...a6 Create pressure on b5

    Board fact: Black moves the pawn from a7 to a6; from a6 it attacks White's bishop on b5.

    Fixed engine check: Ranked first · a6.

  7. 4.Ba4 Create pressure on c6

    Board fact: White moves the bishop from b5 to a4; from a4 it attacks Black's knight on c6.

    Fixed engine check: Ranked first · Ba4 Nf6.

  8. 4...Nf6 Develop the knight

    Board fact: Black develops the knight from g8 to f6; from f6 it attacks White's pawn on e4.

    Fixed engine check: Ranked first · Nf6 O-O Nxe4 d4.

  9. 5.d3 Advance the d-pawn

    Board fact: White moves the pawn from d2 to d3; from there it controls e4 and c4.

    Fixed engine check: Ranked first · d3 d6 c3 Be7.

  10. 5...d6 Advance the d-pawn

    Board fact: Black moves the pawn from d7 to d6; from there it controls e5 and c5.

    Fixed engine check: Ranked first · d6 c3 Be7 h3.

  11. 6.c3 Advance the c-pawn

    Board fact: White moves the pawn from c2 to c3; from there it controls d4.

    Fixed engine check: Ranked first · c3 Be7.

  12. 6...Be7 Develop the bishop

    Board fact: Black develops the bishop from f8 to e7; from there it controls d6 and f6.

    Fixed engine check: Near the leading choice · Be7 O-O O-O Nbd2.

  13. 7.Nbd2 Develop the knight

    Board fact: White develops the knight from b1 to d2; from there it controls e4, c4 and f3.

    Fixed engine check: Ranked first · Nbd2 O-O.

  14. 7...O-O Kingside castling

    Board fact: Black castles kingside, moving the king to g8 and the rook to f8. The move changes king safety and develops the rook in one turn.

    Fixed engine check: Ranked first · O-O O-O Be6 h3.

  15. 8.Nf1 Reroute the knight

    Board fact: White moves the knight from d2 to f1; from there it controls e3.

    Fixed engine check: Playable; O-O ranked higher · Nf1 d5.

  16. 8...b5 Create pressure on a4

    Board fact: Black moves the pawn from b7 to b5; from b5 it attacks White's bishop on a4.

    Fixed engine check: Near the leading choice · b5 Bc2.

  17. 9.Bc2 Reposition the bishop

    Board fact: White moves the bishop from a4 to c2; from there it controls d3.

    Fixed engine check: Ranked first · Bc2 d5.

    Moves 9-11 — central tension in the RuyBlack plays 9...d5 and the centre is resolved by 10...dxe4 11.dxe4. White then develops the c1-bishop to g5 and keeps pressure on e5 and the d-file.
  18. 9...d5 Change the pawn structure

    Board fact: Black moves the pawn from d6 to d5; the move changes the central pawn contact; from d5 it attacks White's pawn on e4.

    Fixed engine check: Ranked first · d5 exd5 Qxd5 Ng3.

  19. 10.Qe2 Reposition the queen

    Board fact: White moves the queen from d1 to e2; from there it controls e4, d3 and e3.

    Fixed engine check: Near the leading choice · Qe2 Re8.

  20. 10...dxe4 Exchange on e4

    Board fact: Black's pawn takes the pawn on e4; the move changes the central pawn contact; Black accepts doubled pawns on the e-file; from e4 it attacks White's knight on f3 and White's pawn on d3; black is ahead by 1 conventional material point after the capture.

    Fixed engine check: Playable; a5 ranked higher · dxe4.

Middlegame · 11.dxe4 to 44...Rxc4

  1. 11.dxe4 Recapture on e4

    Board fact: White's pawn recaptures the pawn on e4; the move changes the central pawn contact; material is level after the capture.

    Fixed engine check: Ranked first · dxe4.

  2. 11...Bc5 Create pressure on f2

    Board fact: Black moves the bishop from e7 to c5; from c5 it attacks White's pawn on f2.

    Fixed engine check: Near the leading choice · Bc5 Bg5.

  3. 12.Bg5 Develop the bishop

    Board fact: White develops the bishop from c1 to g5; from g5 it attacks Black's knight on f6.

    Fixed engine check: Ranked first · Bg5 Be6 Ne3 Bxe3.

  4. 12...Be6 Develop the bishop

    Board fact: Black develops the bishop from c8 to e6; from e6 it attacks White's pawn on a2.

    Fixed engine check: Ranked first · Be6 Ne3 Bxe3 Qxe3.

  5. 13.Ne3 Develop the knight

    Board fact: White develops the knight from f1 to e3; from there it controls d5, c4 and f5.

    Fixed engine check: Ranked first · Ne3 Bxe3 Qxe3 h6.

  6. 13...Re8 Improve the rook

    Board fact: Black moves the rook from f8 to e8; from there it controls e6.

    Fixed engine check: Near the leading choice · Re8 Rd1.

  7. 14.O-O Kingside castling

    Board fact: White castles kingside, moving the king to g1 and the rook to f1. The move changes king safety and develops the rook in one turn.

    Fixed engine check: Near the leading choice · O-O Bxe3.

  8. 14...Qe7 Reposition the queen

    Board fact: Black moves the queen from d8 to e7; from there it controls c5, d6 and e6.

    Fixed engine check: Near the leading choice · Qe7.

  9. 15.Nd5 Create pressure on e7

    Board fact: White moves the knight from e3 to d5; from d5 it attacks Black's queen on e7 and Black's knight on f6.

    Fixed engine check: Ranked first · Nd5 Bxd5 exd5 e4.

  10. 15...Bxd5 Exchange on d5

    Board fact: Black's bishop takes the knight on d5; from d5 it attacks White's pawn on a2 and White's pawn on e4; black is ahead by 3 conventional material points after the capture.

    Fixed engine check: Ranked first · Bxd5 exd5 Nb8 b4.

  11. 16.exd5 Recapture on d5

    Board fact: White's pawn recaptures the bishop on d5; the move changes the central pawn contact; from d5 it attacks Black's knight on c6; material is level after the capture.

    Fixed engine check: Ranked first · exd5 Nb8 b4 Bd6.

  12. 16...Nb8 Reroute the knight

    Board fact: Black moves the knight from c6 to b8; from there it controls c6.

    Fixed engine check: Ranked first · Nb8 Bxf6 Qxf6 b4.

  13. 17.a4 Create pressure on b5

    Board fact: White moves the pawn from a2 to a4; from a4 it attacks Black's pawn on b5.

    Fixed engine check: Playable; b4 ranked higher · a4 Nbd7.

  14. 17...b4 Create pressure on c3

    Board fact: Black moves the pawn from b5 to b4; from b4 it attacks White's pawn on c3.

    Fixed engine check: Near the leading choice · b4 Bxf6 Qxf6 Nd2.

  15. 18.cxb4 Exchange on b4

    Board fact: White's pawn takes the pawn on b4; the move changes the central pawn contact; White accepts doubled pawns on the b-file; from b4 it attacks Black's bishop on c5; white is ahead by 1 conventional material point after the capture.

    Fixed engine check: Near the leading choice · cxb4 Bd6 Bxf6 Qxf6.

  16. 18...Bxb4 Recapture on b4

    Board fact: Black's bishop recaptures the pawn on b4; from b4 it reinforces the queen on e7; material is level after the capture.

    Fixed engine check: Recorded move; Bd6 ranked higher · Bxb4 Bxf6 Qxf6 Qe4.

  17. 19.Bxf6 Exchange on f6

    Board fact: White's bishop takes the knight on f6; from f6 it attacks Black's queen on e7 and Black's pawn on e5; white is ahead by 3 conventional material points after the capture.

    Fixed engine check: Ranked first · Bxf6 Qxf6 Qe4 Bd6.

    Moves 19-21 — Bxf6 and Qxh7+!19.Bxf6 Qxf6 20.Qe4 lines the queen and bishop up on h7. The capture 21.Qxh7+ wins that pawn with tempo and leads to a queen exchange two moves later.
  18. 19...Qxf6 Recapture on f6

    Board fact: Black's queen recaptures the bishop on f6; from f6 it attacks White's knight on f3; material is level after the capture.

    Fixed engine check: Ranked first · Qxf6.

  19. 20.Qe4 Create pressure on b4

    Board fact: White moves the queen from e2 to e4; from e4 it attacks Black's bishop on b4 and Black's pawn on e5.

    Fixed engine check: Ranked first · Qe4 Bd6.

  20. 20...Bd6 Reposition the bishop

    Board fact: Black moves the bishop from b4 to d6; from there it controls e5 and c5.

    Fixed engine check: Ranked first · Bd6 Qxh7+ Kf8 Rac1.

  21. 21.Qxh7+ Capture with check on h7

    Board fact: White's queen takes the pawn on h7; the move checks Black's king; from h7 it attacks Black's pawn on g7; white is ahead by 1 conventional material point after the capture.

    Fixed engine check: Ranked first · Qxh7+ Kf8 Rac1 Nd7.

  22. 21...Kf8 Answering the check

    Board fact: Black answers the check by moving the king from g8 to f8; from f8 it reinforces the rook on e8.

    Fixed engine check: Ranked first · Kf8.

  23. 22.Nh4 Reroute the knight

    Board fact: White moves the knight from f3 to h4; from there it controls f3 and f5.

    Fixed engine check: Ranked first · Nh4 Qh6 Qxh6 gxh6.

  24. 22...Qh6 Create pressure on h7

    Board fact: Black moves the queen from f6 to h6; from h6 it attacks White's queen on h7 and White's knight on h4.

    Fixed engine check: Ranked first · Qh6 Qxh6 gxh6 Nf5.

  25. 23.Qxh6 Exchange on h6

    Board fact: White's queen takes the queen on h6; from h6 it attacks Black's bishop on d6 and Black's pawn on g7; white is ahead by 10 conventional material points after the capture.

    Fixed engine check: Ranked first · Qxh6 gxh6 Nf5 Nd7.

  26. 23...gxh6 Recapture on h6

    Board fact: Black's pawn recaptures the queen on h6; the move changes the central pawn contact; white is ahead by 1 conventional material point after the capture.

    Fixed engine check: Ranked first · gxh6.

  27. 24.Nf5 Create pressure on d6

    Board fact: White moves the knight from h4 to f5; from f5 it attacks Black's bishop on d6 and Black's pawn on h6.

    Fixed engine check: Ranked first · Nf5 h5.

    Move 24 — Nf5, the strong knightAfter the queens come off, 24.Nf5 occupies an outpost that Black's g-pawn can no longer challenge: that pawn has recaptured on h6. The knight later returns through e3 to c4.
  28. 24...h5 Advance the h-pawn

    Board fact: Black moves the pawn from h6 to h5.

    Fixed engine check: Ranked first · h5 Rfc1.

  29. 25.Bd1 Create pressure on h5

    Board fact: White moves the bishop from c2 to d1; from d1 it attacks Black's pawn on h5.

    Fixed engine check: Ranked first · Bd1 Nd7 Rc1 Nf6.

  30. 25...Nd7 Develop the knight

    Board fact: Black develops the knight from b8 to d7; from there it controls e5, c5 and f6.

    Fixed engine check: Ranked first · Nd7 Rc1 Nf6 g3.

  31. 26.Bxh5 Exchange on h5

    Board fact: White's bishop takes the pawn on h5; from h5 it attacks Black's pawn on f7; white is ahead by 2 conventional material points after the capture.

    Fixed engine check: Ranked first · Bxh5.

  32. 26...Nf6 Create pressure on h5

    Board fact: Black moves the knight from d7 to f6; from f6 it attacks White's bishop on h5 and White's pawn on d5.

    Fixed engine check: Playable; Reb8 ranked higher · Nf6 Be2 Reb8 Ra2.

  33. 27.Be2 Create pressure on a6

    Board fact: White moves the bishop from h5 to e2; from e2 it attacks Black's pawn on a6.

    Fixed engine check: Ranked first · Be2 Reb8 Ra2 Rb4.

  34. 27...Nxd5 Exchange on d5

    Board fact: Black's knight takes the pawn on d5; from d5 it reinforces the pawn on c7; white is ahead by 1 conventional material point after the capture.

    Fixed engine check: Playable; Reb8 ranked higher · Nxd5 Rad1 Nf4 Bc4.

  35. 28.Rfd1 Rook on the open d-file

    Board fact: White moves the rook from f1 to d1; the rook now occupies the open d-file; from d1 it attacks Black's knight on d5.

    Fixed engine check: Ranked first · Rfd1 Nf4 Bc4 Red8.

  36. 28...Nf4 Create pressure on e2

    Board fact: Black moves the knight from d5 to f4; from f4 it attacks White's bishop on e2 and White's pawn on g2.

    Fixed engine check: Ranked first · Nf4 Bc4 Red8 g3.

  37. 29.Bc4 Create pressure on a6

    Board fact: White moves the bishop from e2 to c4; from c4 it attacks Black's pawn on a6 and Black's pawn on f7.

    Fixed engine check: Ranked first · Bc4 Rab8 g3 Ne6.

  38. 29...Red8 Rook on the open d-file

    Board fact: Black moves the rook from e8 to d8; the rook now occupies the open d-file; from there it controls d6.

    Fixed engine check: Ranked first · Red8 g3 Ne6 Rac1.

  39. 30.h4 Advance a passed pawn

    Board fact: White moves the pawn from h2 to h4; the pawn is now passed.

    Fixed engine check: Near the leading choice · h4 Bc5.

  40. 30...a5 Advance the a-pawn

    Board fact: Black moves the pawn from a6 to a5.

    Fixed engine check: Ranked first · a5 g3 Ne6 Bxe6.

  41. 31.g3 Create pressure on f4

    Board fact: White moves the pawn from g2 to g3; from g3 it attacks Black's knight on f4.

    Fixed engine check: Ranked first · g3 Nh5 Nh6 f6.

  42. 31...Ne6 Improve the knight

    Board fact: Black moves the knight from f4 to e6; from there it controls d4, c5 and f4.

    Fixed engine check: Ranked first · Ne6 Bxe6 fxe6 Ne3.

  43. 32.Bxe6 Exchange on e6

    Board fact: White's bishop takes the knight on e6; from e6 it attacks Black's pawn on f7; white is ahead by 4 conventional material points after the capture.

    Fixed engine check: Ranked first · Bxe6 fxe6 Ne3 Rdb8.

  44. 32...fxe6 Recapture on e6

    Board fact: Black's pawn recaptures the bishop on e6; the move changes the central pawn contact; Black accepts doubled pawns on the e-file; from e6 it attacks White's knight on f5; white is ahead by 1 conventional material point after the capture.

    Fixed engine check: Ranked first · fxe6 Ne3 Ke7 Nc4.

  45. 33.Ne3 Improve the knight

    Board fact: White moves the knight from f5 to e3; from there it controls d5, c4 and f5.

    Fixed engine check: Ranked first · Ne3 Rab8 Nc4 e4.

  46. 33...Rdb8 Rook on the semi-open b-file

    Board fact: Black moves the rook from d8 to b8; the rook now works on a semi-open b-file; from b8 it attacks White's pawn on b2.

    Fixed engine check: Near the leading choice · Rdb8 Nc4 Ke7 Rd3.

  47. 34.Nc4 Create pressure on d6

    Board fact: White moves the knight from e3 to c4; from c4 it attacks Black's bishop on d6 and Black's pawn on a5.

    Fixed engine check: Ranked first · Nc4 Rb4 Nxd6 cxd6.

  48. 34...Ke7 Reposition the king

    Board fact: Black moves the king from f8 to e7; from there it controls d6, e6 and f6.

    Fixed engine check: Near the leading choice · Ke7 Rd3 Rb4 b3.

  49. 35.Rac1 Rook on the semi-open c-file

    Board fact: White moves the rook from a1 to c1; the rook now works on a semi-open c-file; from there it controls c3 and c4.

    Fixed engine check: Playable; Rd3 ranked higher · Rac1 Rb4 Re1 Rg8.

  50. 35...Ra7 Improve the rook

    Board fact: Black moves the rook from a8 to a7; from a7 it reinforces the pawn on a5.

    Fixed engine check: Playable; Rb4 ranked higher · Ra7 Rc3 Rf8 Rc2.

  51. 36.Re1 Rook on the semi-open e-file

    Board fact: White moves the rook from d1 to e1; the rook now works on a semi-open e-file; from e1 it attacks Black's pawn on e5.

    Fixed engine check: Near the leading choice · Re1 Rb4 Nxe5 Bxe5.

  52. 36...Kf6 Reposition the king

    Board fact: Black moves the king from e7 to f6; from there it controls e5, e6 and f5.

    Fixed engine check: Playable; Ra6 ranked higher · Kf6 Rc3 Rab7 Ree3.

  53. 37.Re4 Rook on the semi-open e-file

    Board fact: White moves the rook from e1 to e4; the rook now works on a semi-open e-file; from e4 it attacks Black's pawn on e5.

    Fixed engine check: Ranked first · Re4 Rb4 Rce1 Ra8.

  54. 37...Rb4 Rook on the semi-open b-file

    Board fact: Black moves the rook from b8 to b4; the rook now works on a semi-open b-file; from b4 it attacks White's knight on c4 and White's pawn on a4.

    Fixed engine check: Ranked first · Rb4 Rc3 Rxa4 Rg4.

  55. 38.g4 Advance a passed pawn

    Board fact: White moves the pawn from g3 to g4; the pawn is now passed; from there it controls f5.

    Fixed engine check: Ranked first · g4.

  56. 38...Ra6 Improve the rook

    Board fact: Black moves the rook from a7 to a6; from there it controls c6 and d6.

    Fixed engine check: Ranked first · Ra6 Kg2 Ra8 Rc3.

  57. 39.Rc3 Rook on the semi-open c-file

    Board fact: White moves the rook from c1 to c3; the rook now works on a semi-open c-file; from there it controls c4, d3 and e3.

    Fixed engine check: Near the leading choice · Rc3 Rxa4 g5+ Kg6.

  58. 39...Bc5 Create pressure on f2

    Board fact: Black moves the bishop from d6 to c5; from c5 it attacks White's pawn on f2.

    Fixed engine check: Playable; Rxa4 ranked higher · Bc5 Rf3+ Kg7 b3.

  59. 40.Rf3+ A forcing check

    Board fact: White moves the rook from c3 to f3; the move checks Black's king; from there it controls c3, d3 and e3.

    Fixed engine check: Ranked first · Rf3+ Ke7 b3 Bd4.

  60. 40...Kg7 Answering the check

    Board fact: Black answers the check by moving the king from f6 to g7; from there it controls f6.

    Fixed engine check: Ranked first · Kg7 b3 Bd4 Kg2.

  61. 41.b3 Advance the b-pawn

    Board fact: White moves the pawn from b2 to b3; from there it controls c4.

    Fixed engine check: Ranked first · b3 Bd6 Rd3 Kh6.

  62. 41...Bd4 Create pressure on f2

    Board fact: Black moves the bishop from c5 to d4; from d4 it attacks White's pawn on f2.

    Fixed engine check: Near the leading choice · Bd4 g5 Ra8 Kf1.

  63. 42.Kg2 Reposition the king

    Board fact: White moves the king from g1 to g2; from there it controls f3.

    Fixed engine check: Ranked first · Kg2 Ra8 h5 Rab8.

  64. 42...Ra8 Improve the rook

    Board fact: Black moves the rook from a6 to a8; from a8 it reinforces the pawn on a5.

    Fixed engine check: Ranked first · Ra8 h5 c5 g5.

  65. 43.g5 Advance a passed pawn

    Board fact: White moves the pawn from g4 to g5; the pawn is now passed; from there it controls f6.

    Fixed engine check: Ranked first · g5 Kg6 Rf6+ Kg7.

  66. 43...Ra6 Improve the rook

    Board fact: Black moves the rook from a8 to a6; from there it controls c6, d6 and e6.

    Fixed engine check: Playable; Kg6 ranked higher · Ra6 h5 c5 Nxe5.

  67. 44.h5 Advance a passed pawn

    Board fact: White moves the pawn from h4 to h5; the pawn is now passed.

    Fixed engine check: Ranked first · h5 c5 h6+ Kh7.

    Moves 44-46 — exchange on c4, pawn to g6After 44.h5, Black gives up a rook for White's active c4-knight. White's g-pawn then reaches 46.g6, the final move in the stored score.
  68. 44...Rxc4 Exchange on c4

    Board fact: Black's rook takes the knight on c4; from c4 it attacks White's pawn on a4; black is ahead by 2 conventional material points after the capture.

    Fixed engine check: Playable; c5 ranked higher · Rxc4 bxc4 Rb6 Rh4.

Endgame · 45.bxc4 to 46.g6

  1. 45.bxc4 Recapture on c4

    Board fact: White's pawn recaptures the rook on c4; the move changes the central pawn contact; white is ahead by 3 conventional material points after the capture.

    Fixed engine check: Ranked first · bxc4 Rb6 h6+ Kg6.

  2. 45...Rc6 Create pressure on c4

    Board fact: Black moves the rook from a6 to c6; from c6 it attacks White's pawn on c4.

    Fixed engine check: Playable; c6 ranked higher · Rc6 Rf6 Kg8 h6.

  3. 46.g6 Advance a passed pawn

    Board fact: White moves the pawn from g5 to g6; the pawn is now passed.

    Fixed engine check: Ranked first · g6 Ra6 Rf7+ Kh8.

PGN

[Event "San Sebastian"] [Site "?"] [Date "1911.??.??"] [White "Capablanca, Jose Raul"] [Black "Burn, Amos"] [Result "1-0"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 Be7 7. Nbd2 O-O 8. Nf1 b5 9. Bc2 d5 10. Qe2 dxe4 11. dxe4 Bc5 12. Bg5 Be6 13. Ne3 Re8 14. O-O Qe7 15. Nd5 Bxd5 16. exd5 Nb8 17. a4 b4 18. cxb4 Bxb4 19. Bxf6 Qxf6 20. Qe4 Bd6 21. Qxh7+ Kf8 22. Nh4 Qh6 23. Qxh6 gxh6 24. Nf5 h5 25. Bd1 Nd7 26. Bxh5 Nf6 27. Be2 Nxd5 28. Rfd1 Nf4 29. Bc4 Red8 30. h4 a5 31. g3 Ne6 32. Bxe6 fxe6 33. Ne3 Rdb8 34. Nc4 Ke7 35. Rac1 Ra7 36. Re1 Kf6 37. Re4 Rb4 38. g4 Ra6 39. Rc3 Bc5 40. Rf3+ Kg7 41. b3 Bd4 42. Kg2 Ra8 43. g5 Ra6 44. h5 Rxc4 45. bxc4 Rc6 46. g6 1-0

Sources and checking

Score source: Chess Database, version 1 by Ana Schaigorodsky (2016), licensed under CC BY 4.0. LibreChess selected the exact score identified by sha256:a439f42d3f9a681af3c4daddbbf199a4b8f782b41456fbfbf99bf073b6489a21 and pins it in the selection manifest.
Exact Figshare tags:
White="Capablanca, Jose Raul"; Black="Burn, Amos"; Event="San Sebastian"; Date="1911.??.??"; Result="1-0". LibreChess parsed the main line with chess.js and stores normalised SAN. Source comments, side variations and termination detail were not retained.

LibreChess checks every SAN move with chess.js and compares the result and move sequence with a stored reference. The engine comparison was calculated offline from the fixed settings above; it is not a source for historical claims or a substitute for the authored notes. No termination is inferred where the imported score does not preserve one.

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