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Aug 31, 2015 at 12:36 vote accept alex
Aug 31, 2015 at 11:24 comment added JiK In algebraic notation, that's 4.e5 c5 5.Bd2.
Aug 31, 2015 at 10:27 comment added Dag Oskar Madsen There were earlier occurrences in master play: Marshall-Chigorin, Monte Carlo (1901) and Speijer-Alekhine(!), Hamburg (1910).
Aug 31, 2015 at 9:29 review First posts
Aug 31, 2015 at 10:23
Aug 31, 2015 at 9:28 history answered Ian Bush CC BY-SA 3.0