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[what is this?]

Caro-Kahn defense See interesting and extensive game collections of: Phony Benoni's Game Collections 1 game, 2012 Catalan Defence 1 game, 2011 Disasters!!! When things go horribly wrong.... 5 games, 1859-1983 Dutch defence 1 game, 1925 English openings 1 game, 2006 Four Knights Four Knights 1 game, 1918 French defense openings French defense openings. 13 games, 1900-2012 King's Gambit Accepted 2 games, 1849-2012 Necessary sacrifices 40 games, 1858-2012 Philidor defences 1 game, 1858 Queen's Gambit Declined Queen's Gambit Declined openings. 4 games, 1908-2012 Queen's Indian Defence 2 games, 1920-2012 Sicilian defence games Sicilian defence games. 4 games, 1985-2012 Tarrasch Defense 1 game, 1912