Event: World Senior Chess Championship 2024
Site: Porto Santo, Portugal
Date: 2024-11-17
White: Knaak, Rainer
WhiteTitle: GM
WhiteElo: 2458
Black: Ibar, Marcelo
BlackTitle: FM
BlackElo: 2044
Result: 1/2-1/2
ECO: A57
Opening: Benko Gambit Accepted: Modern Variation
Variant: Standard
TimeControl: 90'/40+30'/G+30''

1. d4 { [%eval 0.17] } 1... Nf6 { [%eval 0.17] } 2. c4 { [%eval 0.16] } 2... c5 { [%eval 0.56] } 3. d5 { [%eval 0.62] } 3... b5 { [%eval 0.53] } 4. cxb5 { [%eval 0.55] } 4... a6 { [%eval 0.58] } 5. e3 { [%eval 0.42] } 5... axb5 { [%eval 0.58] } 6. Bxb5 { [%eval 0.5] } 6... Qa5+ 7. Nc3 Ba6 8. Bxa6 Nxa6 9. Nf3 g6 10. O-O d6 11. Nd2 Bg7 12. Nc4 Qb4 13. Qe2 Nc7 14. e4 O-O 15. Bg5 Rfe8 16. Rac1 Ra6 17. b3 Nd7 18. Bd2 Qb8 19. Ne3 Qa8 20. Rc2 e6 21. Qd1 exd5 22. Nexd5 Nxd5 23. Nxd5 Qa7 24. a4 Rxe4 25. Bc3 Bxc3 26. Nxc3 Re6 27. Rd2 Nf6 28. Re1 Qe7 29. Rxe6 Qxe6 30. Nb5 Ne8 31. Rd3 Rb6 32. h3 Rb8 33. Re3 Qf6 34. Nc3 Qd4 35. Rd3 Qe5 36. Nd5 Kg7 37. Ne3 Rd8 38. Rd5 Qc3 39. Nc4 Rb8 40. Rd3 Qb4 41. Re3 Rd8 42. Re7 Qc3 43. Re3 Qf6 44. Rf3 Qe6 45. Qa1+ Kf8 46. Re3 Qf5 47. Qe1 Nc7 48. Rf3 Qe6 49. Re3 Qf5 50. Rf3 1/2-1/2