Puzzle 651445:
Puzzle 651445:
GM V. Erdos (2623) - FM Vl Kovalev (2446)
European Rapid 2011 Warsaw POL (5), 2011.12.17 Erdos - Kovalev, Warsaw 2011
European Rapid 2011 Warsaw POL (5), 2011.12.17 Erdos - Kovalev, Warsaw 2011