A natural move, bringing the rook into the game. The computer indicates an intricate winning method with 15...f5.
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  7. g1f3  7... f8g7  8. d1e2  8... e8g8  9. d2d3 [%c_effect d3;square;d3;type;Inaccuracy;persistent;true] This move makes things worse. 9... b8c6  10. b1d2  10... d5d4 [%c_effect d4;square;d4;type;GreatFind;persistent;true] 11. e3e4  11... b7b5 Something went very wrong with White's play. Black has a clear advantage. The b2-bishop doesn't make a good impression. 12. e1g1  12... f6g4 [%c_effect g4;square;g4;type;GreatFind;persistent;true] The knight heads to the delicious e3-square. 13. f1e1  13... g7h6  14. g2g3  14... e7e5 [%c_effect e5;square;e5;type;GreatFind;persistent;true] 15. f4e5 