In 1881 and 1882, A.E. Blackmar created Blackmar's Gambit, a chess opening, and published his work in the July 1882 issue of Brentano’s Chess.
The Blackmar–Diemer Gambit arose as a development of the earlier Blackmar Gambit, named after Armand Blackmar, a relatively little-known New Orleans player of the late 19th century who popularized its characteristic moves (1.d4 d5 2.e4 dxe4 3.f3) and was the first player to publish analysis on the opening in the chess literature.
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