1. d2d4  1... g8f6  2. c2c4  2... g7g6  3. g1f3  3... f8g7  4. e2e3  4... e8g8  5. f1e2  5... d7d6  6. b1c3  6... b8d7  7. e1g1  7... e7e5  8. b2b3 A somewhat slow move. Since the center will  be closed soon and both sides will have clear plans of playing on separate flanks, it made sense for White to push this pawn on b4 at once.