[Event "Chennai Grand Masters 2023"] [White "Maghsoodloo,Parham"] [Black "Erigaisi Arjun"] [Site "Chennai"] [Round "6.3"] [Annotator "TA"] [Result "0-1"] [Date "2023.12.20"] [WhiteElo "2742"] [BlackElo "2727"] [PlyCount "80"] [TimeControl "60"] {[%evp 11,80,0,39,-36,-27,-29,-26,-43,-36,-51,0,0,0,0,0,0,0,-30,-30,-37,-15,-55,-45,-58,-54,-72,-50,-64,-43,-56,-20,-79,-60,-68,-67,-75,-79,-76,-70,-75,-63,-107,-89,-167,-161,-315,-317,-308,-303,-319,-308,-295,-279,-493,-471,-646,-649,-979,-958,-972,-956,-1685,-1630,-29984,-29985,-29988,-29989,-29993,-29992,-29992,-29993]} 1. c4 {[%emt 0:0:4]} e6 {[%emt 0:0:12]} 2. Nc3 {[%emt 0:0:5]} Nf6 {[%emt 0:0:7]} 3. Nf3 {[%emt 0:3:8]} d5 {[%emt 0:0:14]} 4. d4 {[%emt 0:0:9]} c6 {[%emt 0:0:6]} 5. Bg5 {[%emt 0:5:23]} dxc4 {[%emt 0:0:31]} 6. a4 {[%emt 0:0:42]} b5 {[%emt 0:0:37]} 7. g3 {[%emt 0:3:33] D44: Semi-Slav: Botvinnik System.} ({White should play} 7. axb5 $14 cxb5 8. Nxb5 )Bb7 {[%emt 0:4:37]} 8. Bg2 {[%emt 0:0:21]} a6 {[%emt 0:4:26]} 9. O-O {[%emt 0:11:26] Black has an edge.} Be7 {[%emt 0:1:17]} 10. Ne5 {[%emt 0:4:16]} O-O $5 {[%emt 0:2:37][%mdl 4] Exploring less charted territory.} (10... Nd5 $15 11. Bxe7 Qxe7 )11. axb5 $11 {[%emt 0:5:2]} axb5 {[%emt 0:0:13] White must now prevent ...Rxa1.} 12. Rxa8 {[%emt 0:0:9]} Bxa8 {[%emt 0:0:6]} 13. Qa1 {[%emt 0:3:56] [#]} Qxd4 $146 {[%emt 0:14:2] ...Bb7 would be deadly.} ({Predecessor:} 13... Nbd7 14. Qa7 Nxe5 15. dxe5 Nd5 16. Nxd5 Bxg5 17. Nb6 Qd4 18. Qa6 Qxb2 19. Nxa8 c3 20. Qxc6 {1-0 Nguyen,N (2644)-Sandipan,C (2640) Qinhuangdao op 1st 2011 (7)} )14. Nxf7 {[%emt 0:6:40]} ({Don't play} 14. Nf3 Qb6 15. Nxb5 (15. Qxa8 $2 Na6 $19 )cxb5 $17 )(14. Qxa8 $5 {[%cal Re5c6]} Qxe5 15. Bf4 $11 )Kxf7 {[%emt 0:4:28]} 15. Qxa8 {[%emt 0:3:40]} Qb6 {[%emt 0:4:10]} (15... b4 $5 {[%cal Rb4c3]} 16. Rd1 Qb6 $11 )16. Qa1 {[%emt 0:17:58]} Nbd7 {[%emt 0:3:45]} 17. Qb1 {[%emt 0:4:44]} h6 {[%emt 0:3:59]} 18. Bf4 {[%emt 0:1:3]} Nd5 {[%emt 0:4:12]} 19. Ne4 {[%emt 0:2:42]} N7f6 {[%emt 0:6:55] Black is more active.} 20. Be5 {[%emt 0:1:23]} Rd8 {[%emt 0:4:58]} (20... Ng4 $5 {[%cal Rg4e5]} 21. Bc3 Nxc3 22. Nxc3 Kg8 $15 )21. Bh3 {[%emt 0:0:26]} (21. Bf3 $11 {keeps the balance.} )c5 {[%emt 0:0:59]} 22. Nd2 {[%emt 0:5:17]} Nd7 {[%emt 0:4:51]} 23. Nf3 {[%emt 0:0:18]} Bf6 {[%emt 0:0:23]} 24. Bxf6 {[%emt 0:3:21]} N5xf6 {[%emt 0:0:23]} 25. Qc2 {[%emt 0:1:21]} Qa5 {[%emt 0:6:48]} 26. Rc1 {[%emt 0:2:49] Black converts the advantage convincingly.} g5 {[%emt 0:2:15]} 27. Rf1 {[%emt 0:5:8] [#]} (27. Nd2 $17 )Qa4 $1 $19 {[%emt 0:6:22]} ({Resist} 27... g4 28. Bxg4 Qa4 29. Qb1 $14 )28. Qd2 {[%emt 0:3:33] [#]} (28. Qb1 {might work better.} )g4 $1 {[%emt 0:0:12]} 29. Bxg4 {[%emt 0:1:20]} Nxg4 {[%emt 0:0:5]} 30. h3 {[%emt 0:2:7]} Ngf6 {[%emt 0:0:7]} 31. Qxh6 {[%emt 0:0:5][%cal Ye2e4]} Rg8 {[%emt 0:0:31] And now ...Qc2 would win.} 32. g4 $2 {[%emt 0:1:14]} (32. Qd2 )Qc2 {[%emt 0:1:38]} 33. Qf4 {[%emt 0:0:29]} Ke7 {[%emt 0:0:37]} 34. Qg3 {[%emt 0:1:36]} Qxb2 {[%emt 0:2:11]} 35. Rd1 {[%emt 0:0:26]} Qxe2 {[%emt 0:0:20]} 36. Qd6+ {[%emt 0:0:57]} Kf7 {[%emt 0:0:5][%cal Ye7f7,Yf7f6,Yf6f5][%mdl 32] ( -> ...Nxg4)} 37. Kg2 {[%emt 0:0:14] [#]} Nxg4 $1 {[%emt 0:2:50] Black mates.} 38. Ng5+ {[%emt 0:0:7]} (38. Qf4+ Ngf6+ )Rxg5 {[%emt 0:0:6]} 39. Qxd7+ {[%emt 0:0:3]} Kf6 {[%emt 0:0:14]} 40. Qd8+ {[%emt 0:0:7]} Kf5 {[%emt 0:0:11] Weighted Error Value: White=0.78/Black=0.08 (flawless)} 0-1