1. g1f3  1... g8f6  2. c2c4  2... g7g6  3. b2b3  3... f8g7  4. c1b2  4... c7c5  5. g2g3  5... b7b6  6. f1g2  6... c8b7  7. e1g1  7... e8g8  8. d2d4  8... c5d4  9. d1d4  9... b8a6  10. b1c3  10... f6e4 The trade of the two pairs of minor pieces is logical, as it somewhat relieves the tension. However, it also has a serious drawback as both kingside defenders disappear.