George Shainswit was born in New York City, United States on January 3, 1918.
From the end of 1930s to the early 1950s George Shainswit was one of American leading chess players.
In 1943, George Shainswit shared 1st place with Anthony Santasiere in Ventnor City.
In 1945, he was an American reserve player in US vs. USSR radio chess match.
In 1950, George Shainswit shared 1st place with Arnold Denker in Manhattan Chess Club Championship.