1. c2c4  1... g8f6  2. b1c3  2... e7e5  3. g1f3  3... b8c6  4. g2g3  4... d7d5  5. c4d5  5... f6d5  6. f1g2  6... f8c5 A popular move nowadays. The old and classical choice is 6...Nb6, while 6...Nf6 is another modern try. 7. e1g1 