Most simultaneous blindfolded chess wins (by win percentage)

Without seeing any of his opponents' moves, Miguel Najdorf (Argentina) played 45 simultaneous games of chess against some of Brazil's greatest players, over 23 hours and 25 minutes in on 21 January 1947 in São Paulo, Brazil. He won 39 games, drew 4 and lost 2 – a win percentage of 86.6%.

Mr Najdorf was representing Poland in Buenos Aires when Germany invaded his country. He had left behind his wife, daughter and family. He would never see them again.

He played against many personalities of his time, including Perón, Winston Churchill and Ernesto Guevara, and invented a few moves that are still named after him.

In 1947, Miguel was invited by the city of São Paulo as part of its anniversary celebrations. He thought that if he broke an important record, the news would spread around the world and this way regain contact with his family. Sadly, this didn't happen.

Mr. Najdorf married for the second time in Argentina and had two more daughters. He died while touring, at the age of 87, in Málaga, Spain, on 4 July 1997.