Isidor Arthur Gunsberg (1 November 1854 – 2 May 1930) was a Hungarian chess player, best known for narrowly losing the 1891 World Chess Championship match to Wilhelm Steinitz after 4 wins, 9 draws, and 6 losses.
Gunsberg began his chess career as the player inside the chess automaton Mephisto. He started playing chess at the Café de la Regence at the age of 12. He took 3rd place at the 6th American Chess Congress.
In 1916, he sued the Evening News (Alfred William Foster) for libel when they said that his chess column in the London Daily Telegraph contained blunders and unsound chess problems. He won the suit (and 250 pounds in damages) after the High Court accepted a submission that in chess matters, eight oversights did not make a blunder.
Ginsberg died of heart failure at his home at 4 Woodfield Avenue, Streatham on 2 May 1930.
He was buried in Streatham Park cemetery but no trace remains there. His father and family lived at 37 Knollys Road Streatham.
The Jewish Chronicle carried an obituary "Mr I Ginsberg who died last Friday at the age of 75 was a well known Chess Champion. He was born in Budapest and at an early age became a chess player of note carrying off many prizes" ( extracts from Tom Hardy's book- Eminent Victorian Chess Players)