Puzzle 22018:
Puzzle 22018:
Peter Svidler (2754) - Alexander Grischuk (2736)
62nd ch-RUS Moscow RUS (4), 2009.12.23 Svidler - Grischuk, Moscow 2009
62nd ch-RUS Moscow RUS (4), 2009.12.23 Svidler - Grischuk, Moscow 2009
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