1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. g2g3  4... f8e7  5. f1g2 The preparation for the world championship match keeps giving fruits for the world champion, and in this game he manages to demonstrate one more powerful Catalan idea. 5... e8g8  6. e1g1  6... d5c4  7. b1a3  7... e7a3 