Stalker J., Glasscoe A., Stayart G. The Budapest Defense: Chess Openings Monograph No. 1

Davenport: Thinkers’ Press, 1980. — 72 p.Consistent with his well-known respect for the Queen’s Pawn openings, Gyula Breyer had set a board with 1 d4 Nf6 2 c4, begging the opinion
of a passing friend. Szigmond Barasz pushed...e5!, and on 3 de, played 3...Ng4 and walked away. Analyzing feverishly, Breyer soon convinced
himself that the gambit was at least playable. Barasz, and later an eager Abonyi, joined in his examination.'So a casual accident uncovers the Budapest Defense, in this Balogh anecdote. The three must have been familiar with the mirror-image Tennison
Gambit (1 Nf3 d5 2 e4), and realized at once that Barasz’ move had reversed color into a more favorable form.“...Our speculations were supported by Breyer who, on the one hand enriched the theory by solving two subvariations and, on the other, introduced
the opening into competitive play. The brilliant and well-known construction of his game gave new respect to chess...”