A Open: Bluebaum, Piorun and Poh co-leadersAmilal Munkhdalai from Mongolia surprisingly became the sole leader of the Dortmund A Open. By giving up a pawn early, Black immediately gets exactly what the modern player is looking for: open lines, harmonious development and relentless, long-term pressure on White's queenside. Free sample video:Free sample chapter:The Benko Gambit is back at the very highest level - and it's easy to see why. The Alapin Variation (1.e4 c5 2.c3) offers a simple yet highly effective solution to all major Sicilian lines, by sidestepping them with 2.c3. The Alapin Variation (1.e4 c5 2.c3) offers a simple yet highly effective solution to all major Sicilian lines, by sidestepping them with 2.c3.