Puzzle 307172:
Puzzle 307172:
S. Korotkjevich (2389) - IM David Anton Guijarro (2546)
17th Neckar Open Deizisau GER, 2013.03.31 Korotkjevich - Anton Guijarro, Deizisau 2013
17th Neckar Open Deizisau GER, 2013.03.31 Korotkjevich - Anton Guijarro, Deizisau 2013