Puzzle 11871:
Puzzle 11871:
GM Veselin Topalov (2761) - GM Ding Liren (2755)
4th Sinquefield Cup 2016 Saint Louis USA, 2016.08.09 Topalov - Ding Liren, Saint Louis 2016
4th Sinquefield Cup 2016 Saint Louis USA, 2016.08.09 Topalov - Ding Liren, Saint Louis 2016