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Classic game replay

Augustus Mongredien vs Paul Morphy, 1859

This replay preserves the complete 36-ply score of Morphy playing Black across 18 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
Augustus Mongredien
Black
Paul Morphy
Event
Paris m1
Year
1859
Result
0-1
Opening
C52 Italian Game: Evans Gambit, Slow Variation

Opening reference: Italian Game: Evans Gambit, Slow Variation (C52).

In this game, 20 half-moves are labelled opening, 16 middlegame and 0 endgame. The score contains 5 captures and 0 checks or mates; before a recorded move, the position offered a median of 31 legal choices. The source score ends after 18...Qh4 with the recorded result 0-1. Its termination tag was not retained, so this record does not infer whether the game ended by resignation, time or another cause.

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. 8...Ne7 — Create pressure on d58...Ne7 was a leading choice in the fixed engine check.
  2. 13...Nxf4 — Recapture on f413...Nxf4 was a leading choice in the fixed engine check.
  3. 18...Qh4 — Create pressure on f218...Qh4 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.

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Augustus Mongredien vs Paul Morphy, 1859

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...Ng6

  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.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 Nf6 d3 d6.

  6. 3...Bc5 Develop the bishop

    Board fact: Black develops the bishop from f8 to c5; from c5 it attacks White's pawn on f2.

    Fixed engine check: Near the leading choice · Bc5 c3 Nf6 d4.

  7. 4.b4 Create pressure on c5

    Board fact: White moves the pawn from b2 to b4; from b4 it attacks Black's bishop on c5.

    Fixed engine check: Playable; c3 ranked higher · b4.

  8. 4...Bxb4 Exchange on b4

    Board fact: Black's bishop takes the pawn on b4; from b4 it attacks White's pawn on d2; black is ahead by 1 conventional material point after the capture.

    Fixed engine check: Ranked first · Bxb4.

  9. 5.c3 Create pressure on b4

    Board fact: White moves the pawn from c2 to c3; from c3 it attacks Black's bishop on b4.

    Fixed engine check: Ranked first · c3 Be7 d4 Na5.

  10. 5...Ba5 Create pressure on c3

    Board fact: Black moves the bishop from b4 to a5; from a5 it attacks White's pawn on c3.

    Fixed engine check: Ranked first · Ba5 d4.

  11. 6.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 Nf6 d4 Nxe4.

  12. 6...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: Near the leading choice · Nf6 d4.

  13. 7.d4 Change the pawn structure

    Board fact: White moves the pawn from d2 to d4; the move changes the central pawn contact; from d4 it attacks Black's pawn on e5.

    Fixed engine check: Ranked first · d4 d6 Qa4 a6.

  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: Playable; d6 ranked higher · O-O Nxe5 Nxe5 dxe5.

  15. 8.d5 Change the pawn structure

    Board fact: White moves the pawn from d4 to d5; the move changes the central pawn contact; from d5 it attacks Black's knight on c6.

    Fixed engine check: Recorded move; Nxe5 ranked higher · d5 Ne7 Bd3 d6.

  16. 8...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 Bd3 d6 c4.

  17. 9.Qd3 Reposition the queen

    Board fact: White moves the queen from d1 to d3; from there it controls d4, d5 and e4.

    Fixed engine check: Near the leading choice · Qd3 d6 Nbd2 Bb6.

  18. 9...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 Nbd2 Bb6 a4.

  19. 10.h3 Advance the h-pawn

    Board fact: White moves the pawn from h2 to h3.

    Fixed engine check: Playable; Nbd2 ranked higher · h3 Ng6 Be3 Kh8.

  20. 10...Ng6 Reroute the knight

    Board fact: Black moves the knight from e7 to g6; from there it controls e5 and f4.

    Fixed engine check: Ranked first · Ng6 Be3 Nh5 Qd1.

Middlegame · 11.Nh2 to 18...Qh4

  1. 11.Nh2 Reroute the knight

    Board fact: White moves the knight from f3 to h2; from there it controls f3.

    Fixed engine check: Playable; a4 ranked higher · Nh2 Nh5 Qd1 Qh4.

  2. 11...Nh5 Reroute the knight

    Board fact: Black moves the knight from f6 to h5; from there it controls f4 and f6.

    Fixed engine check: Ranked first · Nh5 Qd1.

  3. 12.Bb3 Reposition the bishop

    Board fact: White moves the bishop from c4 to b3; from there it controls d5 and c4.

    Fixed engine check: Playable; Kh1 ranked higher · Bb3 Ngf4 Qf3 f5.

  4. 12...Nhf4 Create pressure on d3

    Board fact: Black moves the knight from h5 to f4; from f4 it attacks White's queen on d3 and White's pawn on d5.

    Fixed engine check: Ranked first · Nhf4 Qd1 f5 Kh1.

  5. 13.Bxf4 Exchange on f4

    Board fact: White's bishop takes the knight on f4; from f4 it attacks Black's pawn on e5; white is ahead by 2 conventional material points after the capture.

    Fixed engine check: Ranked first · Bxf4 Nxf4 Qf3 f5.

  6. 13...Nxf4 Recapture on f4

    Board fact: Black's knight recaptures the bishop on f4; from f4 it attacks White's queen on d3 and White's pawn on d5; black is ahead by 1 conventional material point after the capture.

    Fixed engine check: Ranked first · Nxf4 Qf3 f5 exf5.

  7. 14.Qf3 Create pressure on f4

    Board fact: White moves the queen from d3 to f3; from f3 it attacks Black's knight on f4.

    Fixed engine check: Ranked first · Qf3 f5 exf5 Bxf5.

  8. 14...f5 Change the pawn structure

    Board fact: Black moves the pawn from f7 to f5; the move changes the central pawn contact; from f5 it attacks White's pawn on e4.

    Fixed engine check: Ranked first · f5 exf5 Bxf5 Nd2.

  9. 15.exf5 Exchange on f5

    Board fact: White's pawn takes the pawn on f5; the move changes the central pawn contact; White accepts doubled pawns on the f-file; material is level after the capture.

    Fixed engine check: Ranked first · exf5 Bxf5 Nd2 Bxc3.

  10. 15...Bxf5 Recapture on f5

    Board fact: Black's bishop recaptures the pawn on f5; from f5 it attacks White's knight on b1 and White's pawn on h3; black is ahead by 1 conventional material point after the capture.

    Fixed engine check: Ranked first · Bxf5 Nd2 Bd3 Rad1.

  11. 16.g4 Create pressure on f5

    Board fact: White moves the pawn from g2 to g4; from g4 it attacks Black's bishop on f5.

    Fixed engine check: Recorded move; Bc4 ranked higher · g4 Bd3 Re1 Qh4.

  12. 16...Bd3 Create pressure on f1

    Board fact: Black moves the bishop from f5 to d3; from d3 it attacks White's rook on f1 and White's knight on b1.

    Fixed engine check: Ranked first · Bd3 Qe3 Qh4 Kh1.

  13. 17.Qe3 Create pressure on d3

    Board fact: White moves the queen from f3 to e3; from e3 it attacks Black's bishop on d3 and Black's knight on f4.

    Fixed engine check: Playable; Re1 ranked higher · Qe3 Bb6 Nd2 Kh8.

  14. 17...Bb6 Create pressure on e3

    Board fact: Black moves the bishop from a5 to b6; from b6 it attacks White's queen on e3.

    Fixed engine check: Ranked first · Bb6 Nd2 Kh8 Qf3.

  15. 18.Qd2 Create pressure on d3

    Board fact: White moves the queen from e3 to d2; from d2 it attacks Black's bishop on d3 and Black's knight on f4.

    Fixed engine check: Playable; Nd2 ranked higher · Qd2 Qh4 Qxd3 Nxd3.

  16. 18...Qh4 Create pressure on f2

    Board fact: Black moves the queen from d8 to h4; from h4 it attacks White's pawn on f2 and White's pawn on g4.

    Fixed engine check: Ranked first · Qh4 Kh1 Bxf1 Qe1.

PGN

[Event "Paris m1"] [Site "?"] [Date "1859.??.??"] [White "Mongredien, Augustus"] [Black "Morphy, Paul"] [Result "0-1"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. O-O Nf6 7. d4 O-O 8. d5 Ne7 9. Qd3 d6 10. h3 Ng6 11. Nh2 Nh5 12. Bb3 Nhf4 13. Bxf4 Nxf4 14. Qf3 f5 15. exf5 Bxf5 16. g4 Bd3 17. Qe3 Bb6 18. Qd2 Qh4 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:fb812243d4d28fb5283c73260e045a46bc07bfdc2ba37662fd3806cfaca762df and pins it in the selection manifest.
Exact Figshare tags:
White="Mongredien, Augustus"; Black="Morphy, Paul"; Event="Paris m1"; Date="1859.??.??"; 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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