1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... d5c4  5. e2e4  5... b7b5 [%c_effect b5;square;b5;type;Interesting;persistent;true] This is an interesting and risky variation which is occasionally chosen by strong grandmasters when they want to play for a win with Black. 6. e4e5  6... f6d5  7. c3b5  7... d5b6 Black's pawn structure is weakened, but his pieces gain potential: the d5-square can be used by a knight, and the bishop has a great diagonal on b7. You need to have the right spirit to play like this, offering a long-term advantage in exchange for dynamism.