Editing Opera Game

{{Short description|Famous 1858 chess game played at an opera house in Paris}}
{{Use dmy dates|date=August 2021}}
[[File:Opera Game, 1858.gif|thumb|upright=1.3|Animation of the Opera Game]]
The '''Opera Game''' was a [[chess]] game played in 1858 at an opera house in Paris. The American master [[Paul Morphy]] played against two amateurs: the German noble [[Charles II, Duke of Brunswick|Karl II, Duke of Brunswick]], and the French aristocrat Comte Isouard de Vauvenargues. It was played as a {{chessgloss|consultation game}}, with Duke Karl and Count Isouard jointly deciding each move for the black pieces, while Morphy controlled the white pieces by himself. The game was played in a [[Box (theatre)|box]] while an opera was performed on stage.{{efn|It is unclear which opera was being performed while the chess game was played.  Although some sources have indicated ''[[The Barber of Seville]]'',<ref name="Sergeant">{{cite book |last=Sergeant |first=Philip W. |title=Morphy's Games of Chess |year=1957 |isbn=0486203867 |publisher=Dover |pages=149–150}}</ref><ref name="whyldweekend">{{cite book |last=Whyld |first=Kenneth |author-link=Ken Whyld |title=Learn Chess in a Weekend |year=1993 |publisher=Knopf/DK |page=87 |isbn=9780679422297}}</ref> chess historian [[Edward Winter (chess historian)|Edward Winter]] indicated that other sources have pointed to [[Vincenzo Bellini|Bellini]]'s ''[[Norma (opera)|Norma]]'', among other possibilities.  Although Winter himself refrained from pronouncing on the matter, his correspondent Fabrizio Zavatarelli wrote that the game was likely played during a performance of either ''The Barber of Seville'' or ''Norma''.  Winter's analysis points to a day in late October or early November of 1858, but this is also uncertain.<ref name="Winter">{{cite web |last=Winter |first=Edward |title= Morphy v the Duke and Count |url=https://www.chesshistory.com/winter/extra/morphy.html |website=chesshistory.com}}</ref>}}  Morphy quickly [[checkmate]]d his opponents following rapid {{chessgloss|development}} and [[Sacrifice (chess)|sacrifice]] of {{chessgloss|material}}, including a [[queen sacrifice]].

It is among the most famous of chess games.<ref>{{cite book |last1=Marshall |first1=Frank J. |title=Comparative Chess |date=1932 |publisher=David McKay company |location=Philadelphia |page=54 |url=https://babel.hathitrust.org/cgi/pt?id=osu.32435010467462&view=1up&seq=60 |access-date=27 November 2021}}</ref> The game is often used by chess instructors to teach the importance of piece development, the value of [[Sacrifice (chess)|sacrifices]] in mating [[Combination (chess)|combinations]], and other concepts. 
{{AN chess|pos=toc}}

==The game==
White: Paul Morphy {{pad|2}} Black: Duke of Brunswick and Count Isouard {{pad|2}} [[Chess opening|Opening]]: [[Philidor Defence]] (''[[Encyclopaedia of Chess Openings|ECO]]'' C41) <br />[[Paris]], October/November<ref name="Sergeant" /><ref name="Winter" /> 1858

'''1. e4 e5 2. Nf3 d6'''
:This is [[Philidor's Defence]], named after [[François-André Danican Philidor]], the leading chess master of the second half of the 18th century and a pioneer of modern chess strategy. He was also a noted opera composer. It is a solid opening, but slightly passive, and it ignores the important d4-square. Most modern players prefer 2...Nc6 or 2...Nf6, [[Petrov Defence|Petrov's Defence]].

'''3. d4 Bg4{{chesspunc|?!}}'''
:Though common at the time, [[Philidor Defence#3...Bg4?!|3...Bg4]] is now considered inferior.<ref>{{cite book |last=von Bilguer |first=Paul Rudolf |author-link=Paul Rudolf von Bilguer |url=https://books.google.com/books?id=tPxdAAAAcAAJ&q=Philidor&pg=PA46 |title=Handbuch des Schachspiels |year=1843 }}</ref> [[Bobby Fischer]], in his analysis of the game, called it a weak move. Today [[Philidor Defence#3...exd4|3...exd4]] or [[Philidor Defence#Hanham Variation|3...Nf6]] are more commonly played. Philidor's original idea, [[Philidor Defence#Philidor Countergambit|3...f5]], is a risky alternative.

'''4. dxe5 Bxf3'''
:If 4...dxe5, then 5.Qxd8+ Kxd8 6.Nxe5 and White wins a [[Pawn (chess)|pawn]] and Black has lost the ability to [[castling|castle]], and White is threatening Nxf7+ winning the [[Rook (chess)|rook]]. If 4...Qe7, White remains a pawn up with 5.Qd5.  Black, however, did have the option of 4...Nd7 5.exd6 Bxd6. In this position, Black is down a pawn but has some [[Compensation (chess)|compensation]] in the form of better [[Chess opening#Common aims in opening play|development]].

'''5. Qxf3'''
:[[Wilhelm Steinitz|Steinitz]]'s recommendation 5.gxf3 dxe5 6.Qxd8+ Kxd8 7.f4 is also good, but Morphy prefers to keep the [[Queen (chess)|queens]] on. After Black recaptures the pawn on e5, White has a significant lead in development. A {{Chessgloss|recapture}} with the queen is the most natural as it keeps a healthy {{Chessgloss|kingside}} [[pawn structure]].

'''5...dxe5 6. Bc4 Nf6{{chesspunc|?}}'''
:This seemingly sound developing move runs into a surprising {{chessgloss|refutation}}. After White's next move, both f7 and b7 will be under attack. Better would have been to directly protect the f7-pawn with 6...Qd7 or 6...Qf6, making White's next move less potent.

{{chess diagram
 |tright
 |
 |rd|nd|  |  |kd|bd|  |rd
 |pd|pd|pd|  |qd|pd|pd|pd
 |  |  |  |  |  |nd|  |  
 |  |  |  |  |pd|  |  |  
 |  |  |bl|  |pl|  |  |  
 |  |ql|  |  |  |  |  |  
 |pl|pl|pl|  |  |pl|pl|pl
 |rl|nl|bl|  |kl|  |  |rl
 |Position after 7...Qe7
}}
'''7. Qb3 Qe7''' (diagram)
:Black's only reasonable move. White was threatening mate in two, for example, 7...Nc6 8.Bxf7+ Ke7 (or Kd7) 9.Qe6#. 7...Qd7 loses the [[rook (chess)|rook]] to 8.Qxb7 followed by 9.Qxa8 (since 8...Qc6? would lose the queen to 9.Bb5).

:Although this move prevents immediate disaster, Black blocks the f8-[[bishop (chess)|bishop]], impeding development and {{chessgloss|kingside}} castling.

'''8. Nc3'''
:Morphy could have won a pawn by 8.Qxb7 Qb4+ 9.Qxb4 Bxb4+. White can also win more material with 8.Bxf7+ Qxf7 9.Qxb7, but Black has dangerous counterplay after 9...Bc5{{chesspunc|!}} and 10.Qxa8 0-0, or 10.Qc8+ Ke7 11.Qxh8 Bxf2+!. "But that would have been a butcher’s method, not an artist's." ([[Emanuel Lasker|Lasker]]).<ref name="Sergeant" /><ref name="Winter" /> In keeping with his style, Morphy prefers rapid development and [[Initiative (chess)|initiative]] over material.

'''8... c6'''
:The best move, allowing Black to defend his pawn while strengthening the {{chessgloss|light squares}}, which have already been weakened by Black trading off his light-square bishop.

'''9. Bg5 b5?'''
:Black attempts to drive away the bishop and gain some {{chessgloss|time}}, but this move allows Morphy a strong [[sacrifice (chess)|sacrifice]] to keep the initiative. This move loses but it is difficult to find anything better; for example 9...Na6 10.Bxf6 gxf6 11.Bxa6 bxa6 12.Qa4 Qb7 and Black's position is very weak.

'''10. Nxb5!'''
:Morphy chooses not to retreat the bishop, which would allow Black to gain time for development. 

'''10... cxb5'''
:Black could have prolonged the game by playing 10...Qb4+, forcing the exchange of queens, but White wins comfortably after either 11.Nc3 or 11.Qxb4 Bxb4+ 12.c3!

'''11. Bxb5+'''
:Not 11.Bd5? Qb4+, unpinning the knight and allowing the rook to evade capture.

'''11... Nbd7 '''
:11...Kd8 holds out longer, but 12.0-0-0+ still gives White a winning attack.

{{chess diagram
 |tright
 |
 |  |  |  |rd|kd|bd|  |rd
 |pd|  |  |nd|qd|pd|pd|pd
 |  |  |  |  |  |nd|  |  
 |  |bl|  |  |pd|  |bl|  
 |  |  |  |  |pl|  |  |  
 |  |ql|  |  |  |  |  |  
 |pl|pl|pl|  |  |pl|pl|pl
 |  |  |kl|rl|  |  |  |rl
 |Position after 12...Rd8
}}
'''12. 0-0-0 Rd8''' (diagram)
:The combination of the [[pin (chess)|pin]]s on the [[knight (chess)|knights]] and the [[open file]] for White's rook will lead to Black's defeat.  

'''13. Rxd7 Rxd7'''
:Removing another defender.

'''14. Rd1'''
:White's piece activity is in marked contrast to Black's passivity. Black's d7-rook cannot be saved, since it is pinned to the [[king (chess)|king]] by the bishop and attacked by the rook, and though the knight defends it, the knight is pinned to the queen.

'''14... Qe6'''
:Qe6 is a futile attempt to unpin the knight (allowing it to defend the rook) and offer a queen trade, to take some pressure out of the white attack. Even if Morphy did not play his next crushing move, he could have always traded his bishop for the knight, followed by winning the rook.

'''15. Bxd7+ Nxd7'''
:If 15...Qxd7, then 16.Qb8+ Ke7 17.Qxe5+ Kd8 18.Bxf6+ gxf6 19.Qxf6+ Kc8 20.Rxd7 Kxd7 21.Qxh8 and White is clearly winning. Moving the king leads to mate: 15...Ke7 16.Qb4+ Qd6 (16...Kd8 17.Qb8+ Ke7 18.Qe8#) 17.Qxd6+ Kd8 18.Qb8+ Ke7 19.Qe8# or 15...Kd8 16.Qb8+ Ke7 17.Qe8#.

'''16. Qb8+!'''
:Morphy finishes with a [[queen sacrifice]].

'''16... Nxb8 17. Rd8{{chessAN|#}} {{chessAN|1–0}}'''

{{chess diagram
 |tleft
 |
 |  |nd|  |rl|kd|bd|  |rd
 |pd|  |  |  |  |pd|pd|pd
 |  |  |  |  |qd|  |  |  
 |  |  |  |  |pd|  |bl|  
 |  |  |  |  |pl|  |  |  
 |  |  |  |  |  |  |  |  
 |pl|pl|pl|  |  |pl|pl|pl
 |  |  |kl|  |  |  |  |  
 |Final position after 17.Rd8#. White [[Checkmate|mates]] with his two remaining pieces.  
}}
{{clear left}}
This [[checkmate patterns|mating pattern]] is sometimes called the "opera mate" in reference to this game.<ref>[[Jonathan Tisdall]], ''Improve Your Chess Now'', Everyman Chess, 1997, pp 192, 194, 201-202, {{ISBN|1-85744-156-7}} </ref>  Other than the king, all of White's remaining [[Chess piece#Definitions|pieces]] play a role in the checkmate.  Therefore, the position satisfies the definition of an [[economical mate]].  Economical mate is one of a few terms used by [[chess problem]] [[Chess composer|composers]] to describe the [[Chess aesthetics|aesthetic]] properties of a checkmate position; related concepts include [[pure mate]], [[model mate]], and [[ideal mate]].<ref name="Hooper">{{cite book |last1=Hooper |first1=David |author1-link=David Vincent Hooper |last2=Whyld |first2=Kenneth |author2-link=Kenneth Whyld |year=1996 |orig-year=first pub. 1992 |title=The Oxford Companion to Chess |edition=second |publisher=Oxford University Press |location=Oxford |isbn=9780198661641 |title-link=The Oxford Companion to Chess |pages=179, 262, 326-327 }}</ref><ref name="Horton">{{cite book |last=Horton |first=Byrne J. |year=1959 |title=Dictionary of Modern Chess |publisher=Philosophical Library |pages=56, 133-134, 164 }}</ref>  The final position nearly satisfies the criteria of a model mate, but fails for one reason: there are two reasons why the black king cannot be moved to the square f8.  It is occupied by a bishop of the same color, and it is guarded by the white rook.
{{clear}}

==Notes==
{{notelist}}

==References==
{{reflist}}

==Further reading==

* ''The Exploits & Triumphs in Europe of Paul Morphy the Chess Champion'' by Frederick Milne Edge, with a new introduction by David Lawson. Dover 1973; 203 pages. {{ISBN|0-486-22882-7}}
*{{Citation |last=Kasparov |first=Garry |authorlink=Garry Kasparov |year=2003 |title=[[My Great Predecessors]], part I |publisher = [[Everyman Chess]] |isbn= 1-85744-330-6 |pages=39–40 }}

==External links==
* [http://archives.problemiste.free.fr/MatOpera_Exercices/MatOpera.html Le mat de l'opéra] {{in lang|fr}}, variations of the game's final in other chessproblems and games, 2 July 2008 
* [http://en.chessbase.com/post/rare-video-of-bobby-fischer-analyzing--2-161013 Video commentary on the game] by [[Bobby Fischer]]
* {{cite web |url=http://www.chessgames.com/perl/chessgame?gid=1233404 |title=Paul Morphy vs. Duke Karl / Count Isouard, Paris (1858) |website=[[Chessgames.com]] }}

[[Category:Chess games]]
[[Category:Chess in France]]
[[Category:Opera history]]
[[Category:1858 in chess]]
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[[Category:1850s in Paris]]
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