Benoni Defense
also known as: Ben-Oni
1. d4 Nf6 2. c4 c5
Named after
From Hebrew "ben-oni" — "son of my sorrow" (Rachel's dying name for Benjamin in Genesis) — the melancholy title Aaron Reinganum gave his 1825 analysis, written to distract himself from depression.
Origin
Reinganum's "Ben-Oni oder die Vertheidigungen gegen die Gambitzüge im Schache" (Frankfurt, 1825); the Modern Benoni structure was weaponized by Tal in the 1950s–60s.
The story
The saddest name in chess belongs to its most defiant defense. Reinganum, a Frankfurt lawyer, analyzed these counterattacks as therapy for his "hours of sorrow" and named the book accordingly. A century later Mikhail Tal — chess's great sorcerer — found in the Modern Benoni (...c5, ...e6xd5, ...g6) the perfect vehicle for chaos: a permanently unbalanced structure where Black's queenside pawn majority races White's central one, and every middlegame is a knife fight. Fischer trusted it in 1972; Kasparov's youth was full of it; engines frown at it and club players adore it precisely because the sorrow is usually White's.
Why it matters
The archetypal imbalance defense: opposite pawn majorities guarantee a decisive-result fight. The dark-square bishop on g7 plus the ...b5 break versus White's e4–e5 dream is one of theory's great standing arguments.
Notable games
- Tal's Benoni massacres of the 1950s–60s
- Fischer–Spassky, Reykjavík 1972 (game 3 — Fischer's first-ever win against Spassky, a Benoni)