In 1966, the first volume of Chess Informant was published in Belgrade, Yugoslavia, containing 466 annotated games from the leading chess tournaments and matches of the day.
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Kotov wrote that the Soviets had analyzed many opening variations "far into the end game".
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Chess theoreticians analyzed Pacioli's knowledge of the subject after one of the problems from the manuscript was published first by The Guardian and later elsewhere, including Raymond Keene's column in The Times and Susan Polgar's blog.
In high-level chess and correspondence chess, a player well-versed in opening theory may even use as a drawing weapon a sharp opening that has been analyzed to a drawn position in a number of lines, such as the Marshall Attack in the Ruy Lopez, and the Sveshnikov and Poisoned Pawn variations of the Sicilian Defense.