Sicilian, Pteranodon

The Pteranodon is the Sicilian move order of the Pterodactyl in which Black gives up the fianchettoed bishop with 5...Bxc3+, breaking up White's queenside after 6. bxc3. White is briefly a pawn up, but 6...Qxc3+ regains it in nearly all games, leading to the Exchange Variation. The engine rates the position as roughly balanced. White has the bishop pair, while Black has the healthier pawn structure against White's isolated a- and c-pawns.