Corus 2009. Group C. Round 5. Finally, So gained a full point after three consecutive draws. With this second win in round five, he moves up to second place in Group C with 3.5 / 5. Hillarp Persson is leading the group with 4 / 5. After Iturrizaga made a dubious sacrifice with 20. Rf6 ( diagram ), So just took off by reducing material and advancing his queenside pawns. I think the sacrifice was meant to draw the black king out of his fortress, but the second wave of attack never materialized. From the diagram, play continued with 20. Rf6 gf6 21. Ne4 d5! giving back a pawn and freeing the black queen to join the fight. Iturrizaga played 22. Nf6+ Kg7. Black has got this all figured out. Then, 23. Nd5 Qe6 24. Qc3+ f6 25. e4 Qe5. Reduction of material is good for Black. White accepted 26. Qe5 ef5 27. Re1 Nd5 28. ed5 Kf6 29. Kf1 b5. The pawns started advancing. Then, 30. Re3 b4 31. a4 c4 32. Ke2 c3 33. b3 ( if 33. bc, then 33...b3) c2 34. Kd2 Rbc8 35. Kc1 Rc5 ( preparing to double up the rook on the C file since white is expected to pile on the pawn on c2 ) 36. Be4 Rdc8 37. Re2 Rc3 38. Rc2 Ke7 Now, this move seems to be aimed at keeping an eye on the passed d pawn or So has decided to advance his king via the queenside route. Play continued 39. Kd2 Rc2+ 40. Bc2 Rc3. Just cutting off the king and hitting on the b3 pawn. Then, 41. h4 Kd6 42. g4 Rh3 43. Be4 Rh4 44. f3 Rh1 45. Kc2 Kc5 46. Kd2 Rh2+ 47. Kc1 Kd4 48. d6 Kc3 and white resigned.