Paul Morphy vs Duke of Brunswick and Count Isouard
Paris, opera box (casual game), 1858 · result 1-0 · source: chess1/Stockfish 18 (depth 12)
Opening: Philidor Defense — this game followed that line's move order.
Paul Morphy faced Duke of Brunswick and Count Isouard in Paris, opera box (casual game), 1858. Paul Morphy won. The game lasted 17 moves. The opening was the Philidor Defense.
White castled queenside on move 12; Black did not castle. The first capture came on move 4.
The final position is checkmate: the losing king has no legal move out of check.
Alternative: Black opens with the symmetrical e5; e6 is noted as an equal road at +0.3. A quiet start; the fireworks are a few moves away. Best was e6.
Alternative: d6 is Philidor's solid if modest reply. The livelier Nc6 was available and scores nearly the same, +0.3, so this is taste rather than error. Best was Nc6.
Alternative: The first real crossroads: instead of Bg4, the central strike exd4 was the cleaner path at +0.4. The gap is small, but this is where Black's exactness starts to matter. Best was exd4.
Inaccuracy: Bxf3?! lets a small edge grow: the evaluation edges from +0.8 to +1.5. Nothing decisive — but White is now the one steering.
Alternative: The recapture dxe5 is the human choice; the engine does not argue loudly: its alternative Nd7 scores +1.6 against +1.1. Development, in other words, promised slightly more than the capture delivered. Best was Nd7.
Inaccuracy: Nf6?! looks natural and costs real ground: +1.1 becomes +2.0. White's pieces are now the ones that coordinate.
Brilliancy: Nxb5!! — the combination begins. Morphy invests the knight, and the material ledger looks wrong until the number arrives: +2.6 to White. The pressure being bought is long-term; the payment plan is the attack itself.
Brilliancy: Rxd7!! keeps the investment going — the rook plunges deep into the enemy camp and the evaluation jumps to +5.1. Morphy has stopped buying activity; he is buying a won position now.
Excellent: Rd1! is the engine's clear choice, and by a wide margin: Qa4 already evaluates +1.7, against +5.6 after Rd1. The rook converges on the file where the game will actually be decided. Best was Qa4.
Brilliancy: Bxd7+! is the interchange that keeps every threat alive: the bishop takes with check and is taken in turn, the mid-sequence engine protest reads +1.7 — and two moves later the rook closes the game. Nothing here is material arithmetic; it is geometry, and Morphy did the drawing long before the pieces moved.
Brilliancy: Qb8+!! — the move that made the game immortal. The queen walks into a corner square only to be captured, and the engine already reads #1 for White: the attack is no longer a promise, it is arithmetic.
Checkmate: The net closes: Rd8# is mate on the back rank, delivered one move after the queen fell. The audience in the box had, between acts, watched a masterpiece finish itself.
Key moments
Alternative e5
Black opens with the symmetrical e5; e6 is noted as an equal road at +0.3. A quiet start; the fireworks are a few moves away. Best was e6.
Alternative d6
d6 is Philidor's solid if modest reply. The livelier Nc6 was available and scores nearly the same, +0.3, so this is taste rather than error. Best was Nc6.
Alternative Bg4
The first real crossroads: instead of Bg4, the central strike exd4 was the cleaner path at +0.4. The gap is small, but this is where Black's exactness starts to matter. Best was exd4.
Inaccuracy Bxf3
Bxf3?! lets a small edge grow: the evaluation edges from +0.8 to +1.5. Nothing decisive — but White is now the one steering. It captures the knight on f3.
Alternative dxe5
The recapture dxe5 is the human choice; the engine does not argue loudly: its alternative Nd7 scores +1.6 against +1.1. Development, in other words, promised slightly more than the capture delivered. It captures the pawn on e5. Best was Nd7.
Inaccuracy Nf6
Nf6?! looks natural and costs real ground: +1.1 becomes +2.0. White's pieces are now the ones that coordinate.
Brilliancy Nxb5
Nxb5!! — the combination begins. Morphy invests the knight, and the material ledger looks wrong until the number arrives: +2.6 to White. The pressure being bought is long-term; the payment plan is the attack itself. It captures the pawn on b5.
Brilliancy Rxd7
Rxd7!! keeps the investment going — the rook plunges deep into the enemy camp and the evaluation jumps to +5.1. Morphy has stopped buying activity; he is buying a won position now. It captures the knight on d7.
Excellent Rd1
Rd1! is the engine's clear choice, and by a wide margin: Qa4 already evaluates +1.7, against +5.6 after Rd1. The rook converges on the file where the game will actually be decided. Black is up 3 points of material after the move. Best was Qa4.
Brilliancy Bxd7+
Bxd7+! is the interchange that keeps every threat alive: the bishop takes with check and is taken in turn, the mid-sequence engine protest reads +1.7 — and two moves later the rook closes the game. Nothing here is material arithmetic; it is geometry, and Morphy did the drawing long before the pieces moved. It captures the rook on d7. It gives check.
Brilliancy Qb8+
Qb8+!! — the move that made the game immortal. The queen walks into a corner square only to be captured, and the engine already reads #1 for White: the attack is no longer a promise, it is arithmetic. It gives check.
Checkmate Rd8#
The net closes: Rd8# is mate on the back rank, delivered one move after the queen fell. The audience in the box had, between acts, watched a masterpiece finish itself. It is checkmate. Black is up 10 points of material after the move.
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