1. c2c4  1... g8f6  2. g1f3  2... e7e6  3. g2g3  3... d7d5  4. f1g2  4... f8e7  5. e1g1  5... e8g8  6. d2d3 I didn't know this move, which is humble in appearance, but this position has been tried many times by strong players, although overwhelmingly in rapid or blitz games. 6... c7c5 The main move. 7. f3e5 A trendy move. Giri faced this move in a classical game this year.