GM Samuel Sevian won all 20 games in the simultaneous chess exhibition on wednesday at hotel Hasselbacken. 
Here are the players Sam Sevian defeated: Philip Sandberg, Simon Sandberg, Alexander Vu, Edvin Trost, Robert Okpu, Christofer Brask, Christer Johansson, Stefan Lindh, Jung Min Seo, Curt Wrangö, Baldur Petersson, Philip Isaksson, Henrik Jonsson, Anders Grandell, Alexander Isaksson, Petter Fälting, Fredrik Palmqvist, Max Isaksson, Sunny Relom and Adrian Trost.