Black now needs to decide whether to play the pawn to h6 or h5.
1. c2c4  1... e7e6  2. b1c3  2... d7d5  3. c4d5  3... e6d5  4. d2d4  4... f8e7  5. c1f4  5... c7c6  6. e2e3  6... c8f5  7. g1e2 I've played this move twice during my career, once against renowned GM, coach, and opening expert Rustam Kasimdzhanov. 7... b8d7  8. e2g3  8... f5g6  9. f1e2  9... g8f6 The most solid option.