20 Qd1-b3 creates discovery threat, adds to control over b4-sq D Reizniece-Ozola vs S Johnsen, 2011  (A14) English, 43 moves, 1-0 26 Bf4-c7! White gains additional control of c7 with 27 Qe1-e5 Spassky vs O Averkin, 1973  (B44) Sicilian, 35 moves, 1-0 2 games