Puzzle 21020:
Puzzle 21020:
Ian Nepomniachtchi (2751) - Sergey Karjakin (2773)
Saint Louis Rapid 2017 Saint Louis USA (8), 2017.08.16 Nepomniachtchi - Karjakin, Saint Louis 2017
Saint Louis Rapid 2017 Saint Louis USA (8), 2017.08.16 Nepomniachtchi - Karjakin, Saint Louis 2017