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Classic game replay

Carl Mayet vs Adolf Anderssen, 1855

This replay preserves the complete 90-ply score of Anderssen playing Black across 45 numbered moves. The board can be advanced one ply at a time; the notes stick to observable board changes rather than guessing at the players’ intentions.

On this page
  1. Practice positions
  2. Replay with move-by-move board facts
  3. PGN
  4. Sources and checking
  5. Continue with another game
White
Carl Mayet
Black
Adolf Anderssen
Event
Berlin m1
Year
1855
Result
0-1
Opening
C33 King's Gambit Accepted: Bishop's Gambit, McDonnell Attack

Opening reference: King's Gambit Accepted: Bishop's Gambit, McDonnell Attack (C33).

In this game, 20 half-moves are labelled opening, 70 middlegame and 0 endgame. The score contains 19 captures and 6 checks or mates; before a recorded move, the position offered a median of 38 legal choices. The final recorded move is 45...Rxh1#, which is checkmate; the stored result is 0-1.

Practice positions

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. 9...Qg6 — Create pressure on e49...Qg6 was a leading choice in the fixed engine check.
  2. 15...Ne7 — Create pressure on d515...Ne7 was a leading choice in the fixed engine check.
  3. 27...Bxc6+ — Recapture on c627...Bxc6+ was a leading choice in the fixed engine check.
  4. 31...b5 — Create pressure on a431...b5 was a leading choice in the fixed engine check.
  5. 45...Rxh1# — Checkmate45...Rxh1# 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.

♜♞♝♛♚♝♞♜♟♟♟♟♟♟♟♟♟♟♟♟♟♟♟♟♜♞♝♛♚♝♞♜
Carl Mayet vs Adolf Anderssen, 1855

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...h6

  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.f4 Change the pawn structure

    Board fact: White moves the pawn from f2 to f4; the move changes the central pawn contact; from f4 it attacks Black's pawn on e5.

    Fixed engine check: Playable; Nf3 ranked higher · f4 exf4.

  4. 2...exf4 Exchange on f4

    Board fact: Black's pawn takes the pawn on f4; the move changes the central pawn contact; Black accepts doubled pawns on the f-file; black is ahead by 1 conventional material point after the capture.

    Fixed engine check: Ranked first · exf4 Nf3 d5 exd5.

  5. 3.Bc4 Develop the bishop

    Board fact: White develops the bishop from f1 to c4; from c4 it attacks Black's pawn on f7.

    Fixed engine check: Ranked first · Bc4 Qh4+ Kf1 d5.

  6. 3...Qh4+ A forcing check

    Board fact: Black moves the queen from d8 to h4; the move checks White's king; from h4 it attacks White's pawn on h2.

    Fixed engine check: Near the leading choice · Qh4+ Kf1 d5 exd5.

  7. 4.Kf1 Answering the check

    Board fact: White answers the check by moving the king from e1 to f1; from f1 it reinforces the knight on g1.

    Fixed engine check: Ranked first · Kf1.

  8. 4...g5 Advance the g-pawn

    Board fact: Black moves the pawn from g7 to g5; from there it controls f4.

    Fixed engine check: Ranked first · g5 Nf3.

  9. 5.d4 Claim central space

    Board fact: White moves the pawn from d2 to d4; from there it controls e5 and c5.

    Fixed engine check: Ranked first · d4 Ne7 Nf3 Qh5.

  10. 5...Bg7 Develop the bishop

    Board fact: Black develops the bishop from f8 to g7; from g7 it attacks White's pawn on d4.

    Fixed engine check: Near the leading choice · Bg7 Nc3.

  11. 6.Nc3 Develop the knight

    Board fact: White develops the knight from b1 to c3; from there it controls d5 and e4.

    Fixed engine check: Ranked first · Nc3 Ne7 Nf3 Qh5.

  12. 6...Ne7 Develop the knight

    Board fact: Black develops the knight from g8 to e7; from there it controls d5, c6 and f5.

    Fixed engine check: Ranked first · Ne7 Nf3 Qh5 h4.

  13. 7.g3 Create pressure on h4

    Board fact: White moves the pawn from g2 to g3; from g3 it attacks Black's queen on h4 and Black's pawn on f4.

    Fixed engine check: Recorded move; Nf3 ranked higher · g3 fxg3.

  14. 7...fxg3 Exchange on g3

    Board fact: Black's pawn takes the pawn on g3; the move changes the central pawn contact; Black accepts doubled pawns on the g-file; from g3 it attacks White's pawn on h2; black is ahead by 2 conventional material points after the capture.

    Fixed engine check: Ranked first · fxg3 Nf3 Qh3+ Kg1.

  15. 8.Kg2 Create pressure on g3

    Board fact: White moves the king from f1 to g2; from g2 it attacks Black's pawn on g3.

    Fixed engine check: Ranked first · Kg2 d5.

  16. 8...Qh6 Create pressure on h2

    Board fact: Black moves the queen from h4 to h6; from h6 it attacks White's pawn on h2.

    Fixed engine check: Playable; g4 ranked higher · Qh6 Nf3 Qc6 Qf1.

  17. 9.hxg3 Exchange on g3

    Board fact: White's pawn takes the pawn on g3; the move changes the central pawn contact; black is ahead by 1 conventional material point after the capture.

    Fixed engine check: Playable; Nf3 ranked higher · hxg3 Qg6 Be2 h6.

  18. 9...Qg6 Create pressure on e4

    Board fact: Black moves the queen from h6 to g6; from g6 it attacks White's pawn on e4.

    Fixed engine check: Ranked first · Qg6.

  19. 10.Nh3 Develop the knight

    Board fact: White develops the knight from g1 to h3; from h3 it attacks Black's pawn on g5.

    Fixed engine check: Playable; Nf3 ranked higher · Nh3 h6.

  20. 10...h6 Advance the h-pawn

    Board fact: Black moves the pawn from h7 to h6; from h6 it reinforces the pawn on g5.

    Fixed engine check: Ranked first · h6.

Middlegame · 11.Rf1 to 45...Rxh1#

  1. 11.Rf1 Rook on the semi-open f-file

    Board fact: White moves the rook from h1 to f1; the rook now works on a semi-open f-file; from f1 it attacks Black's pawn on f7.

    Fixed engine check: Playable; Nf2 ranked higher · Rf1 O-O Bd3 Bxd4.

  2. 11...Rf8 Improve the rook

    Board fact: Black moves the rook from h8 to f8; from f8 it reinforces the pawn on f7.

    Fixed engine check: Recorded move; O-O ranked higher · Rf8 Be2.

  3. 12.Be3 Develop the bishop

    Board fact: White develops the bishop from c1 to e3; from e3 it attacks Black's pawn on g5.

    Fixed engine check: Recorded move; Be2 ranked higher · Be3 Nbc6 Be2 d6.

  4. 12...a6 Advance the a-pawn

    Board fact: Black moves the pawn from a7 to a6.

    Fixed engine check: Playable; Nbc6 ranked higher · a6 Be2 d6 Bh5.

  5. 13.Nf2 Reroute the knight

    Board fact: White moves the knight from h3 to f2; from there it controls e4 and d3.

    Fixed engine check: Ranked first · Nf2 Nbc6.

  6. 13...Nbc6 Develop the knight

    Board fact: Black develops the knight from b8 to c6; from c6 it attacks White's pawn on d4.

    Fixed engine check: Ranked first · Nbc6 Be2 d6 Bh5.

  7. 14.Nd5 Create pressure on e7

    Board fact: White moves the knight from c3 to d5; from d5 it attacks Black's knight on e7 and Black's pawn on c7.

    Fixed engine check: Playable; Be2 ranked higher · Nd5 Nxd5.

  8. 14...Nxd5 Exchange on d5

    Board fact: Black's knight takes the knight on d5; from d5 it attacks White's bishop on e3; black is ahead by 4 conventional material points after the capture.

    Fixed engine check: Ranked first · Nxd5 exd5 Ne7 Bd2.

  9. 15.exd5 Recapture on d5

    Board fact: White's pawn recaptures the knight on d5; the move changes the central pawn contact; White accepts doubled pawns on the d-file; from d5 it attacks Black's knight on c6; black is ahead by 1 conventional material point after the capture.

    Fixed engine check: Ranked first · exd5 Ne7.

  10. 15...Ne7 Create pressure on d5

    Board fact: Black moves the knight from c6 to e7; from e7 it attacks White's pawn on d5.

    Fixed engine check: Ranked first · Ne7.

  11. 16.Bd3 Create pressure on g6

    Board fact: White moves the bishop from c4 to d3; from d3 it attacks Black's queen on g6 and Black's pawn on a6.

    Fixed engine check: Ranked first · Bd3 f5.

  12. 16...f5 Advance the f-pawn

    Board fact: Black moves the pawn from f7 to f5; from there it controls e4.

    Fixed engine check: Ranked first · f5 c4 b5 b3.

  13. 17.c4 Advance the c-pawn

    Board fact: White moves the pawn from c2 to c4; from there it controls d5.

    Fixed engine check: Ranked first · c4 d6 Be2 Kd8.

  14. 17...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 Qb3.

  15. 18.g4 Create pressure on f5

    Board fact: White moves the pawn from g3 to g4; from g4 it attacks Black's pawn on f5.

    Fixed engine check: Playable; Be2 ranked higher · g4 Bd7.

  16. 18...Bd7 Develop the bishop

    Board fact: Black develops the bishop from c8 to d7; from there it controls c6, e6 and f5.

    Fixed engine check: Ranked first · Bd7.

  17. 19.Qc2 Reposition the queen

    Board fact: White moves the queen from d1 to c2; from there it controls c3, c4 and d3.

    Fixed engine check: Near the leading choice · Qc2 O-O-O b4 Qf7.

  18. 19...O-O-O Queenside castling

    Board fact: Black castles queenside, moving the king to c8 and the rook to d8. The move changes king safety and develops the rook in one turn.

    Fixed engine check: Playable; Qf7 ranked higher · O-O-O b4 Qf7 b5.

  19. 20.Nh1 Reroute the knight

    Board fact: White moves the knight from f2 to h1.

    Fixed engine check: Playable; b4 ranked higher · Nh1 Qf7 gxf5 Nxf5.

  20. 20...h5 Create pressure on g4

    Board fact: Black moves the pawn from h6 to h5; from h5 it attacks White's pawn on g4.

    Fixed engine check: Recorded move; Qe8 ranked higher · h5 Ng3 hxg4 b4.

  21. 21.gxh5 Exchange on h5

    Board fact: White's pawn takes the pawn on h5; the pawn is now passed; the move changes the central pawn contact; from h5 it attacks Black's queen on g6; material is level after the capture.

    Fixed engine check: Recorded move; Rae1 ranked higher · gxh5 Qh6 Rae1 f4.

  22. 21...Qxh5 Recapture on h5

    Board fact: Black's queen recaptures the pawn on h5; from h5 it attacks White's knight on h1; black is ahead by 1 conventional material point after the capture.

    Fixed engine check: Near the leading choice · Qxh5 Ng3 Qf7 Bxg5.

  23. 22.Ng3 Develop the knight

    Board fact: White develops the knight from h1 to g3; from g3 it attacks Black's queen on h5 and Black's pawn on f5.

    Fixed engine check: Ranked first · Ng3 Qf7 Bxg5 Bf6.

  24. 22...Qg6 Reposition the queen

    Board fact: Black moves the queen from h5 to g6; from there it controls d6, e6 and f5.

    Fixed engine check: Playable; Qf7 ranked higher · Qg6 Rh1 Qf7 Bxg5.

  25. 23.Rf2 Rook on the semi-open f-file

    Board fact: White moves the rook from f1 to f2; the rook now works on a semi-open f-file; from f2 it attacks Black's pawn on f5.

    Fixed engine check: Playable; b4 ranked higher · Rf2 Qf7 Bxg5 Bf6.

  26. 23...Rf7 Improve the rook

    Board fact: Black moves the rook from f8 to f7; from there it controls f5 and f6.

    Fixed engine check: Playable; Kb8 ranked higher · Rf7 b4 Kb8 a4.

  27. 24.Raf1 Rook on the semi-open f-file

    Board fact: White moves the rook from a1 to f1; the rook now works on a semi-open f-file; from f1 it reinforces the rook on f2.

    Fixed engine check: Playable; a4 ranked higher · Raf1 Rh8 a4 Kb8.

  28. 24...Rdf8 Improve the rook

    Board fact: Black moves the rook from d8 to f8; from f8 it reinforces the rook on f7.

    Fixed engine check: Playable; Rh8 ranked higher · Rdf8 b4 Rh8 a4.

  29. 25.b4 Advance the b-pawn

    Board fact: White moves the pawn from b2 to b4; from there it controls c5.

    Fixed engine check: Ranked first · b4 Rh8 b5 axb5.

  30. 25...Kb8 Reposition the king

    Board fact: Black moves the king from c8 to b8; from b8 it reinforces the pawn on b7.

    Fixed engine check: Ranked first · Kb8 a4 b6 Rh1.

  31. 26.a4 Advance the a-pawn

    Board fact: White moves the pawn from a2 to a4.

    Fixed engine check: Ranked first · a4 b6 Qc1 Re8.

  32. 26...c6 Change the pawn structure

    Board fact: Black moves the pawn from c7 to c6; the move changes the central pawn contact; from c6 it attacks White's pawn on d5.

    Fixed engine check: Recorded move; b6 ranked higher · c6 b5 cxd5 c5.

  33. 27.dxc6 Exchange on c6

    Board fact: White's pawn takes the pawn on c6; the move changes the central pawn contact; White accepts doubled pawns on the c-file; from c6 it attacks Black's bishop on d7 and Black's pawn on b7; material is level after the capture.

    Fixed engine check: Near the leading choice · dxc6 Bxc6+ d5 Bd7.

  34. 27...Bxc6+ Recapture on c6

    Board fact: Black's bishop recaptures the pawn on c6; the move checks White's king; from c6 it attacks White's pawn on a4; black is ahead by 1 conventional material point after the capture.

    Fixed engine check: Ranked first · Bxc6+ d5 Bd7 b5.

  35. 28.d5 Answering the check

    Board fact: White answers the check by moving the pawn from d4 to d5; from d5 it attacks Black's bishop on c6.

    Fixed engine check: Ranked first · d5 Bd7 Qb3 Be5.

  36. 28...Bd7 Create pressure on a4

    Board fact: Black moves the bishop from c6 to d7; from d7 it attacks White's pawn on a4.

    Fixed engine check: Ranked first · Bd7 b5 a5 Qd2.

  37. 29.b5 Create pressure on a6

    Board fact: White moves the pawn from b4 to b5; from b5 it attacks Black's pawn on a6.

    Fixed engine check: Ranked first · b5 a5 Rf3 Be5.

  38. 29...Be5 Create pressure on g3

    Board fact: Black moves the bishop from g7 to e5; from e5 it attacks White's knight on g3.

    Fixed engine check: Recorded move; a5 ranked higher · Be5.

  39. 30.bxa6 Exchange on a6

    Board fact: White's pawn takes the pawn on a6; the move changes the central pawn contact; White accepts doubled pawns on the a-file; from a6 it attacks Black's pawn on b7; material is level after the capture.

    Fixed engine check: Ranked first · bxa6 b5 Rf3 g4.

  40. 30...Bxg3 Exchange on g3

    Board fact: Black's bishop takes the knight on g3; from g3 it attacks White's rook on f2; black is ahead by 3 conventional material points after the capture.

    Fixed engine check: Ranked first · Bxg3 Rb1 b5 Rxb5+.

  41. 31.Qb2 Create pressure on b7

    Board fact: White moves the queen from c2 to b2; from b2 it attacks Black's pawn on b7.

    Fixed engine check: Recorded move; Rb1 ranked higher · Qb2 b5.

  42. 31...b5 Create pressure on a4

    Board fact: Black moves the pawn from b7 to b5; from b5 it attacks White's pawn on a4 and White's pawn on c4.

    Fixed engine check: Ranked first · b5 axb5 Be5 Bd4.

  43. 32.a7+ A forcing check

    Board fact: White moves the pawn from a6 to a7; the move checks Black's king; the pawn is now passed.

    Fixed engine check: Recorded move; axb5 ranked higher · a7+ Ka8 Rh1 Be5.

  44. 32...Ka8 Answering the check

    Board fact: Black answers the check by moving the king from b8 to a8; from a8 it attacks White's pawn on a7.

    Fixed engine check: Ranked first · Ka8 Rh1 Be5 Qb4.

  45. 33.axb5 Exchange on b5

    Board fact: White's pawn takes the pawn on b5; the pawn is now passed; the move changes the central pawn contact; black is ahead by 2 conventional material points after the capture.

    Fixed engine check: Ranked first · axb5 Bc8 Rh1 Bh4.

  46. 33...Bxf2 Exchange on f2

    Board fact: Black's bishop takes the rook on f2; from f2 it attacks White's bishop on e3; black is ahead by 7 conventional material points after the capture.

    Fixed engine check: Near the leading choice · Bxf2.

  47. 34.b6 Advance a passed pawn

    Board fact: White moves the pawn from b5 to b6; the pawn is now passed; from b6 it reinforces the pawn on a7.

    Fixed engine check: Ranked first · b6 Bc8 Kxf2 Qh5.

  48. 34...Bc8 Reposition the bishop

    Board fact: Black moves the bishop from d7 to c8; from there it controls e6 and f5.

    Fixed engine check: Ranked first · Bc8.

  49. 35.Bxf2 Exchange on f2

    Board fact: White's bishop takes the bishop on f2; from f2 it reinforces the pawn on b6; black is ahead by 4 conventional material points after the capture.

    Fixed engine check: Ranked first · Bxf2 Bb7 Re1 Nxd5.

  50. 35...Bb7 Develop the bishop

    Board fact: Black develops the bishop from c8 to b7; from b7 it attacks White's pawn on d5.

    Fixed engine check: Ranked first · Bb7 Bg3 Nxd5 cxd5.

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

    Board fact: White moves the rook from f1 to e1; the rook now occupies the open e-file; from e1 it attacks Black's knight on e7.

    Fixed engine check: Near the leading choice · Re1 Nxd5 cxd5 Qh5.

  52. 36...Qh5 Reposition the queen

    Board fact: Black moves the queen from g6 to h5; from there it controls f3.

    Fixed engine check: Playable; Nxd5 ranked higher · Qh5 Be2 g4 Rh1.

  53. 37.Be2 Create pressure on h5

    Board fact: White moves the bishop from d3 to e2; from e2 it attacks Black's queen on h5.

    Fixed engine check: Ranked first · Be2 g4 Rh1 Qg6.

  54. 37...g4 Advance a passed pawn

    Board fact: Black moves the pawn from g5 to g4; the pawn is now passed; from there it controls f3.

    Fixed engine check: Ranked first · g4 Rh1 Qg6 Qc3.

  55. 38.Rh1 Rook on the open h-file

    Board fact: White moves the rook from e1 to h1; the rook now occupies the open h-file; from h1 it attacks Black's queen on h5.

    Fixed engine check: Ranked first · Rh1 Qg6.

  56. 38...Qg5 Reposition the queen

    Board fact: Black moves the queen from h5 to g5; from there it controls e3, f4 and f5.

    Fixed engine check: Ranked first · Qg5 Kg1 Nxd5 cxd5.

  57. 39.Bh4 Create pressure on g5

    Board fact: White moves the bishop from f2 to h4; from h4 it attacks Black's queen on g5.

    Fixed engine check: Near the leading choice · Bh4 Qe3 Bf2 Qe4+.

  58. 39...Qe3 Create pressure on e2

    Board fact: Black moves the queen from g5 to e3; from e3 it attacks White's bishop on e2 and White's pawn on b6.

    Fixed engine check: Ranked first · Qe3 Bf2 Qe4+ Kg1.

  59. 40.Bf2 Create pressure on e3

    Board fact: White moves the bishop from h4 to f2; from f2 it attacks Black's queen on e3.

    Fixed engine check: Ranked first · Bf2 Qe4+ Kg1 Nxd5.

  60. 40...Qe4+ A forcing check

    Board fact: Black moves the queen from e3 to e4; the move checks White's king; from e4 it attacks White's bishop on e2 and White's pawn on c4.

    Fixed engine check: Ranked first · Qe4+ Kg1 g3 Rh8.

  61. 41.Kg1 Answering the check

    Board fact: White answers the check by moving the king from g2 to g1; from g1 it reinforces the rook on h1.

    Fixed engine check: Ranked first · Kg1 g3 Rh8 Nc8.

  62. 41...Nxd5 Exchange on d5

    Board fact: Black's knight takes the pawn on d5; from d5 it attacks White's pawn on b6; black is ahead by 5 conventional material points after the capture.

    Fixed engine check: Ranked first · Nxd5 cxd5 Qxd5 Rh2.

  63. 42.cxd5 Recapture on d5

    Board fact: White's pawn recaptures the knight on d5; the move changes the central pawn contact; black is ahead by 2 conventional material points after the capture.

    Fixed engine check: Ranked first · cxd5 Qxd5 Rh2 f4.

  64. 42...Qxd5 Recapture on d5

    Board fact: Black's queen recaptures the pawn on d5; from d5 it attacks White's rook on h1; black is ahead by 3 conventional material points after the capture.

    Fixed engine check: Ranked first · Qxd5 Rh2 f4 Bxg4.

  65. 43.Rh2 Rook on the open h-file

    Board fact: White moves the rook from h1 to h2; the rook now occupies the open h-file; from h2 it reinforces the bishop on f2.

    Fixed engine check: Ranked first · Rh2 f4 Bxg4 Re7.

  66. 43...Rh7 Rook on the open h-file

    Board fact: Black moves the rook from f7 to h7; the rook now occupies the open h-file; from h7 it attacks White's rook on h2.

    Fixed engine check: Ranked first · Rh7 Bh4 Rxh4 Bf3.

  67. 44.Qb5 Create pressure on d5

    Board fact: White moves the queen from b2 to b5; from b5 it attacks Black's queen on d5.

    Fixed engine check: Recorded move; Bh4 ranked higher · Qb5 Qh1+ Rxh1 Rxh1#.

  68. 44...Qh1+ A forcing check

    Board fact: Black moves the queen from d5 to h1; the move checks White's king; from h1 it attacks White's rook on h2.

    Fixed engine check: Ranked first · Qh1+ Rxh1 Rxh1#.

  69. 45.Rxh1 Answering the check

    Board fact: White's rook takes the queen on h1; the rook now occupies the open h-file; from h1 it attacks Black's rook on h7; white is ahead by 6 conventional material points after the capture.

    Fixed engine check: Ranked first · Rxh1 Rxh1#.

  70. 45...Rxh1# Checkmate

    Board fact: Black's rook moves from h7 to h1 and delivers checkmate; White's king has no legal way to answer the attack.

    Fixed engine check: Ranked first · Rxh1#.

PGN

[Event "Berlin m1"] [Site "?"] [Date "1855.??.??"] [White "Mayet, Carl"] [Black "Anderssen, Adolf"] [Result "0-1"] 1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 g5 5. d4 Bg7 6. Nc3 Ne7 7. g3 fxg3 8. Kg2 Qh6 9. hxg3 Qg6 10. Nh3 h6 11. Rf1 Rf8 12. Be3 a6 13. Nf2 Nbc6 14. Nd5 Nxd5 15. exd5 Ne7 16. Bd3 f5 17. c4 d6 18. g4 Bd7 19. Qc2 O-O-O 20. Nh1 h5 21. gxh5 Qxh5 22. Ng3 Qg6 23. Rf2 Rf7 24. Raf1 Rdf8 25. b4 Kb8 26. a4 c6 27. dxc6 Bxc6+ 28. d5 Bd7 29. b5 Be5 30. bxa6 Bxg3 31. Qb2 b5 32. a7+ Ka8 33. axb5 Bxf2 34. b6 Bc8 35. Bxf2 Bb7 36. Re1 Qh5 37. Be2 g4 38. Rh1 Qg5 39. Bh4 Qe3 40. Bf2 Qe4+ 41. Kg1 Nxd5 42. cxd5 Qxd5 43. Rh2 Rh7 44. Qb5 Qh1+ 45. Rxh1 Rxh1# 0-1

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:e38e87c37201363de93cca742713622499b0383cbe486a41206660fdafafe210 and pins it in the selection manifest.
Exact Figshare tags:
White="Mayet, Carl"; Black="Anderssen, Adolf"; Event="Berlin m1"; Date="1855.??.??"; Result="0-1". 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. No termination is inferred where the imported score does not preserve one.

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