Former world champion Vishwanathan Anand scored an emphatic victory over Grandmaster Arkadi Naiditsch of Germany in the fifth round of the Dortmund Sparkassen Chess meeting in Dortmund on Monday.

GM Viktor Bologan of Moldova continued to lead the table after getting an easy draw against youngest participant Timour Radjabov of Azerbaijan. Bologan took his tally to a remarkable 4 points out of a possible 5 and is likely to maintain his full point superiority over nearest contender GM Vladimir Kramnik of Russia, who was engrossed in a tense battle against GM Peter Leko of Hungary when reports last came in.

Anand took his tally to 2 points and will need to score heavily in the rounds to come if he has to be in contention for top honours in this six-players double round-robin tournament, which is played on Category 18 as per FIDEF's charts.

Naiditsch remained on 2 points after bowing to Anand while Radjabov moved to the same score after his draw. Leko was on 1.5 but his game against Kamnik was still on and could get him a full point.

Anand finally struck with black after giving an exhibition of his superior middle game technique. Naiditsch was no match for the Indian giant in a complex battle arising out of a Sicilian Nazdorf.

The German hope, or their best talent as he is sometimes referred to, was in a fix just when the game was out of known theoretical discussions and was outplayed in all its departments thereafter.

The win with black could be important for Anand as he will play with white against Naiditsch in their next encounter scheduled on the final day. Should the Indian ace make a real comeback, he will have a great psychological advantage over Naiditsch in that game.

Results Round 5: Teimour Radjabov (2, Aze) drew Viktor Bologan (4, Mda); Vladimir Kramnik (3, Rus) drew Peter Leko (2, Hun); Arkadi Naiditsch (2, Ger) lost to Viswanathan Anand (2).

Moves:

Arkadi Naiditsch v/s Viswanthan Anand

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 Nbd7 8. Bg5 Qa5 9. Qd2 Be7 10. f3 Nc5 11. O-O-O Qc7 12. Kb1 O-O 13. h4 b5 14. a3 Rb8 15. h5 h6 16. Be3 e5 17. Nf5 Bxf5 18. exf5 Nxb3 19. cxb3 b4 20. axb4 Rxb4 21. Qc2 Qb7 22. g4 Rxb3 23. g5 Rb8 24. Bc1 hxg5 25. h6 Qxf3 26. Ka1 Bf8 27. hxg7 Bxg7 28. Rhg1 g4 29. Rxd6 R3b6 30. Rd3 Qc6 31. Rdg3 Rb4 32. Qe2 a5 33. Qxe5 Re8 white resigned.

Vladimir Kramnik v/s Peter Leko

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 Be7 8. Qd2 Nc6 9. O-O-O O-O 10. g4 Nxd4 11. Bxd4 b5 12. g5 Nd7 13. h4 Qc7 14. a3 Ne5 15. Be2 Nc6 16. Be3 b4 17. axb4 Nxb4 18. h5 Rb8 19. Kb1 e5 20. Nd5 Nxd5 21. exd5 Bf5 22. Bd3 Bxd3 23. Qxd3 Rb4 24. Rhg1 Rfb8 25. Bc1 Qb7 26. Qa3 Rb5 27. Qa2 f5 28. gxf6 Bxf6 29. b3 Rxd5 30. h6 g6 31. Qa4 Rxd1 32. Rxd1 d5 33. Bb2 d4 34. f4 Qb5 35. Qxb5 Rxb5 36. fxe5 Bxe5 37. Bxd4 Rd5 38. c3 Bxd4 39. cxd4 Rh5 40. d5 Kf7 41. d6 Ke8 42. Re1+ Kd8 43. Re7 Rxh6 44. Rg7 g5 45. Rxg5 Rg6 46. Ra5 Rxd6 47. Kc2 Ke8 48. b4 Rb6 49. Kd3 Kf7 50. Ke3 Kg6 51. Kf3 h5 52. Kg3 draw agreed.

Teimour Radjabov v/s Viktor Bologan

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. a3 dxc4 8. Bxc4 Nb6 9. Bd3 Nbd5 10. Nxd5 exd5 11. Qc2 Bd6 12. Bxd6 Qxd6 13. b4 Re8 14. O-O c6 15. b5 cxb5 16. Bxb5 Bd7 17. Bxd7 Qxd7 18. Ne5 Qe6 19. Qb2 Re7 20. a4 draw agreed.