TEHRAN - Iranian chess Grandmaster Morteza Mahjoob set a Guinness world record on Thursday.

He simultaneously played against 500 opponents in Tehran’s Enghelab Sports Complex, scoring 397 wins, 90 draws and 13 loses for a winning percentage of 88.4 percent.
In 1996 the Swedish Grandmaster Ulf Andersson set the Guinness world record for simultaneous playing by taking on 310 opponents.
This record was broken in 2004 by the British International Master Andrew Martin, the author of many of our openings training DVDs. Martin played against 321 opponents.
In August 2005 GM Susan Polgar played against 350 players simultaneously at the Gardens Mall in Palm Beach Gardens, Florida.
In February this year Bulgarian GM Kiril Georgiev played a simultaneous exhibition against 360 opponents.
It was for the first time that a chess player competed with 500 opponents