Now, White's pawn structure needs to be damaged because he is forced to advance the a-pawn to give room for the b3-bishop.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... g8f6  4. d2d3  4... f8c5  5. b1c3 One of the hundreds of ways to play the Anti-Berlin system. This is only the fifth most popular move. 5... e8g8  6. e1g1  6... f8e8  7. c1e3  Curiously, this move, natural as it seems, is a serious mistake. 7... c6d4 Now Black is already clearly better. The problem is that the b5-bishop is in trouble. This knight jump gains strength because White cannot capture with the f3-knight due to the fork, a common pattern in many opening variations. This is one of the reasons why everyone should study games from different openings—it improves your pattern recognition, a crucial ability to achieve chess mastery. 8. b5a4  8... c7c6 Black prepares both b7-b5 and d7-d5. 9. h2h3 This move is useful to avoid Bg4 in some lines. 9... a7a5  10. a4b3 