The Hedgehog
Named after
Named for the animal: Black's pawns crouch on the sixth rank like spines, and anyone who grabs carelessly gets hurt.
Origin
Emerged in the early 1970s from English Opening and Sicilian move orders; Ulf Andersson and Ljubomir Ljubojević were its first great artists.
The story
The Hedgehog inverted a century of doctrine that space advantages simply win: Black voluntarily accepts pawns on a6, b6, d6, e6 — the whole army behind the third rank — and dares White's magnificent position to actually DO something. The spines are the eternal threats of ...b5 and ...d5, which can transform the coiled ball into an avalanche in one move; over-extend anywhere and the counterstrike lands. Perfected in the 1970s by Andersson (who could sit motionless for forty moves) and Ljubojević (who could not), it became the age's great strategic discovery: a defense where passivity is a coiled spring, beloved of players who win by letting opponents defeat themselves.
Why it matters
The modern monument to elastic defense: evaluation by potential energy rather than territory. It changed how chess judges "cramped" positions forever.
Notable games
- Andersson's hedgehog grinds of the 1970s–80s
- Kasparov–Andersson, Tilburg 1981