Christof Sielecki (born May 24, 1974) is a German chess International Master (IM) from Dinslaken, author of chess books, and YouTuber.
He regularly participates in Banter Blitz on the YouTube channel of Chess24.com under the username Chessexplained.
He speaks German and English.
Sielecki reached his highest Elo rating of 2451 in December 2014 and again in March 2015.
This biographical article relating to a German chess figure is a stub.