Puzzle 8201:
Puzzle 8201:
GM R. Swinkels (2482) - Evert De Graaf
Dutch League 2015-16 Netherlands NED, 2016.04.02 Swinkels - De Graaf, Netherlands 2016
Dutch League 2015-16 Netherlands NED, 2016.04.02 Swinkels - De Graaf, Netherlands 2016