1. c2c4  1... e7e5  2. g2g3  2... g8f6  3. f1g2  3... f8c5 So revealed that he was somewhat surprised  by this opening choice by Caruana. 4. d2d3  4... c7c6  5. g1f3  5... d7d6  6. e1g1  6... e8g8  7. b1c3  7... a7a5 