Black is slowly preparing to swap off the light-squared bishop.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f8e7  6. f1e1  6... b7b5  7. a4b3  7... e8g8  8. a2a4 A solid opening choice by Topalov. 8... a8b8  9. d2d3  9... d7d6  10. h2h3  10... c6a5 Anand adopts a Chigorin-style setup. 11. b3a2  11... c7c5  12. a4b5  12... a6b5  13. c2c3 A flexible move and a novelty by Topalov $1 White does not determine yet the route for his queenside knight. 13... a5c6 The knight has done its job and returns to the center. 14. b1a3  14... h7h6 Now Bc1-g5 is stopped for good. 15. a3c2 