[Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [Author "van Alphen, Hendrik Johan"] [Publication "De Problemist"] [PubicationDate "1956.02.??"] [GameType "20"] [Setup "1"] [FEN "W:W16,33,49:B18,23."] [PlyCount "1"] 1. 16-11 $18 1-0 |