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. 8... f8e8  9. h2h3 Another questionable decision. This pawn can well become a weakness very soon. Why should one voluntarily advance pawns on the side where one is weaker? 9... e5e4 The center is closed. Next Black will play on the kingside. His play is very typical and simple: push the h-pawn as far as possible and  transfer the knight from d7 to g5 in a clear attempt to checkmate the  enemy king. White on his turn will try to shatter the enemy queenside as  quick as possible, thus keeping the opponent busy. Ideally, he wants to  defend the opposite wing with as few pieces as possible.