Career
He was a second to Viswanathan Anand in the World Chess Championship 2014 held in Sochi, Russia. Gajewski is probably most known in the chess world by the gambit type move 10..d5!? in the Ruy Lopez opening which he introduced in July 2007 during a tournament in Pardubice. Gajewski played for the Polish team in the Chess Olympiads of 2008 in Dresden, where he played on the fourth board scoring 6,5 points out of 10 games, and 2014 in Tromsø.