1. b2b3  1... d7d5  2. c1b2  2... c7c5  3. e2e3  3... g8f6  4. f2f4 [%c_effect f4;square;f4;type;Inaccuracy;persistent;true] At the risk of earning the enmity of Dutch Defense supporters, I have to say that I'm not a big fan of advancing the f-pawn in the opening. 4... g7g6 [%c_effect g6;square;g6;type;GreatFind;persistent;true] This is the best development to demonstrate the problems of White's opening. 5. f1b5  5... c8d7  6. b5d7  6... d8d7 