Bored with chess? These guys play many people at once—blindfolded!

Bobby Fischer has nothing on Richard Reti, a Czechoslovak chess player, who played 29 games of chess simultaneously—blindfolded. Of course, at the end of the day he admitted to having a horrible memory when he realized he left his briefcase behind.

Blindfold chess, or sans voir, is played with mental images only. There is no touching or looking at the chessboard, and the only way to make your move is to remember what the entire board looks like, including where your, and your opponents, pieces are. Moves are made via a recognized chess notation.

It's estimated that the first game of blindfold chess was played by Sa'id bin Jubair in the Middle East sometime between 665 and 714. The first known blindfold chess event took place in Florence in 1266. The French player Andr Danican Philidor was the first to play three games simultaneously in 1783. There has been a long history of great chess players showing off their memorization ability.

The record was recently topped by the German Marc Lang in 2011 where he played 46 opponents simultaneously with 25 wins, 19 draws, and 2 losses.