Editing Pure mate (section)

===The "Immortal Game"===
{{main|Immortal Game}}

{{Chess diagram
| tleft
| Anderssen vs. Kieseritzky, 1851
|rd|  |bd|kd|  |  |  |rd
|pd|  |  |pd|bl|pd|nl|pd
|nd|  |  |  |  |nd|  |  
|  |pd|  |nl|pl|  |  |pl
|  |  |  |  |  |  |pl|  
|  |  |  |pl|  |  |  |  
|pl|  |pl|  |kl|  |  |  
|qd|  |  |  |  |  |bd|  
|Final position of a frequently reproduced continuation, after 23.Be7#.  A model mate, with White the winner.
}}

The Immortal Game was a casual game played by Adolf Anderssen and [[Lionel Kieseritzky]] in 1851. Anderssen allowed a double rook sacrifice in order to develop an attack using his remaining {{chessgloss|minor pieces}}. Hooper, Whyld and Kasparov report that Kieseritzky resigned the game following 20.Ke2.{{sfn|Hooper & Whyld|p=180}}<ref name="Kasparov">{{cite book |last=Kasparov |first=Garry |authorlink=Garry Kasparov |year=2003 |title=[[My Great Predecessors]], part I |publisher = [[Everyman Chess]] |isbn=9781781945155 |pages=25}}</ref> However, the continuation 20...Na6 21.Nxg7+ Kd8 22.Qf6+ Nxf6 23.Be7# is commonly reported in treatments of the game.<ref>{{cite web |url=https://www.chessgames.com/perl/chessgame?gid=1018910 |title=Adolf Anderssen vs. Lionel Kieseritzky |website=[[Chessgames.com]]}}</ref> If played, this continuation would have resulted in a model mate. Kasparov described the continuation as being both "pure" and "economic", two adjectives which, taken together, are synonymous with a model mate.<ref name="Maizelis" />{{sfn|Hooper & Whyld|p=262}}{{sfn|Horton|pp=133-134}}

{{quote|text=Objectively the game is rather weak and superficial, but what a finish!  After sacrificing both rooks, a bishop and a queen, the mate was simultaneously pure, economic and smooth!<ref name="Kasparov" /> }}
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