check out his videos on you tube - he does live instruction on blitz games that he plays. It's gnarly.
who is "chessnetwork" on live chess and what's up with a 4200 rating??
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He's a USCF National Master. His chess.com elo rating is jacked up because he rips up 1800 and 1900 level players regularly.
http://www.youtube.com/user/ChessNetwork
Seriously who or what is this thing?