an Entity references as follows:
The Barnes Opening (sometimes called Gedult's Opening) is a chess opening where White opens with: 1. f3 The opening is named after Thomas Wilson Barnes (1825–1874), an English player who had an impressive eight wins over Paul Morphy, including one game where Barnes answered 1.e4 with 1...f6, known as the Barnes Defence. Along with several other uncommon first moves, it is classified under the code A00 (irregular openings or uncommon openings) in the Encyclopaedia of Chess Openings.