The Sicilian Pelikan

9 bc a4 ba advantage to Black advantage to White approximate equality ation better endgame bishop Black's chances c4 bc Championship 1977 Chelyabinsk clear advantage compensation continued corr counterplay d4 cd Daugavpils Dc7+ De2+ De7+ decisive advantage defend deserves attention draw efxf5 endgame example exchange extra pawn followed Goryelov Habl Haifa inferior kingside knight Leningrad mate Minsk Moscow move opponent's pawn sacrifice perpetual check play 15 players possible queen queenside reply rook Rostov-on-Don seized the initiative sharp play sharp struggle Sochi Spartakiad stronger Sveshnikov Tbilisi threat Timoshchenko unclear USSR Championship variation Wa4+ Wa5+ wb7+ Wg5+ Wh4+ Wh5+ White retains white-squared World Junior Championship wxd4 wxd5 wxd6 Wxe4 Wxe7 Wxf5 Wxf6 x c4 x d6 xc2+ xc3+ xd5 xd5 xd6+ xe6 fe xe7+ xe7 xf2+ xf6 gf xf6 xf6 xf6+ xh7+ Yerevan Yugoslav Championship