[Event "33rd Annual North American Open"] [Site "Las Vegas"] [Date "2023.12.30"] [White "Koustav Chatterjee"] [Black "Arman Mikaelyan"] [Result "1-0"] [WhiteElo "2546"] [BlackElo "2519"] [Annotator "Lang, JJ"] [Variant "Standard"] [ECO "E49"] [Opening "Nimzo-Indian Defense: Normal Variation, Botvinnik System"] [Source "https://lichess.org/study/u9vHrp1t/jG9JXwy8"] [Orientation "white"] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. a3 Bxc3+ 7. bxc3 dxc4 8. Bxc4 c5 9. Nf3 Qc7 10. Be2 b6 11. Bb2 Bb7 12. O-O Nbd7 13. c4 Rac8 14. Rc1 Rfd8 15. Re1 cxd4 16. exd4 Nc5 17. Ne5 Ba8 18. Bf1 Qb8 19. Re3 Nce4 20. Bd3 Qb7 21. Ng4!? (21. Qf3 { was the other way to go. This line is not meant to be definitive, but there is something to be said for not moving one's best-placed piece. } 21... Ng5 22. Qg3 Nge4 23. Qh4 b5 24. c5 Nxc5 25. Rg3 Nce4 26. Rxg7+ Kxg7 27. f3 Qb6 28. Rxc8 Rxc8 29. fxe4 h6 30. Qg3+ Kf8 31. Qf4 Ke7 32. Qh4 b4 33. Ng4 e5 34. h3 Rc6 35. Kh2 Ke8 36. d5 $18) 21... Nxg4?! (21... b5!? 22. Nxf6+ Nxf6 23. d5! bxc4 24. Bxf6! cxd3 (24... gxf6?! 25. Qg4+ Kf8 26. dxe6 fxe6 27. Bf1 e5 28. Rxc4 Rxc4 29. Qxc4 Rd4 30. Qc5+ Qe7 31. Qc2 $18) 25. Bxd8 Qxd5! { keeps Black's hopes alive: } 26. f3 Rxc1 27. Qxc1 d2 28. Qd1 Qd4! (28... Qxd8 29. Re2 Qd4+ 30. Kh1 $18) 29. Kf2 Qxd8 30. Ke2 Qg5 31. g3 Qb5+ 32. Kxd2 Bd5 $16 { with at least some chances of holding on for a draw. }) 22. Qxg4 f5?! (22... Nf6 { offered a bit more resistance: } 23. Qg3 Nh5 24. Qh3 g6 25. Bf1! Ng7 26. Rd1 Qd7 27. Ree1 $16) 23. Qh4 Qf7 24. f3! { White repels Black's best piece and the bishop pair conducts business from there. } 24... Nd6 (24... Nf6 25. d5 exd5 26. Bxf5 $18) 25. d5 Re8 26. Rce1 b5 27. Rxe6 bxc4 28. Re7 Rxe7 29. Rxe7 cxd3 30. Rxf7 Kxf7 31. Qd4 d2 32. Qxg7+ Ke8 33. Qg8+ { 1-0 White wins. } 1-0