1. c2c4  1... g8f6  2. g1f3  2... d7d6 Already a surprise. Caruana plays the KID very, very  rarely. 3. d2d4  3... g7g6  4. b1c3  4... f8g7  5. e2e4  5... e8g8  6. f1e2  6... e7e5  7. e1g1  7... c8g4 This is what the American wanted to try, a relatively fresh  line.