An understanding of Hedgehog structures is an essential component in any chessplayer's knowledge. These structures arise when the black c-pawn is exchanged early on for the white d-pawn (as in the Sicilian Defence). Publisher: Everyman Chess Author(s): Sergey Kasparov Number of pages: 336 Publication date: 2017 Dimensions: 170 x 238 x 24 Cover type: Paperback / softback