[Event "48th Mid-South Open"] [Site "Memphis"] [Date "2008.11.29"] [Round "2"] [White "Robertson, Michael"] [Black "Chowdhury, Rafi"] [Result "0-1"] [ECO "B07"] [WhiteElo "1391"] [BlackElo "1633"] [Annotator "Fritz 11 (57s)"] [PlyCount "81"] [EventDate "2008.??.??"] {B07: Pirc Defence: Miscellaneous Systems} 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 Bg7 {last book move} 5. Bc4 (5. Nf3 O-O $14) 5... O-O 6. Qd2 Re8 {Black has a cramped position} (6... Nxe4 7. Bxf7+ Rxf7 8. Nxe4 $11) 7. O-O-O Nbd7 8. f3 { Covers g4} (8. Nf3 $5 Nb6 9. Bd3 $14) 8... c6 $11 {Consolidates b5} 9. g4 { Black's piece can't move: c8} b5 {Black threatens to win material: b5xc4} 10. Bb3 Nb6 (10... a5 11. a4 $11) 11. h4 Nc4 (11... a5 12. a4 d5 $14) 12. Bxc4 $14 bxc4 13. h5 {This push gains space} a5 (13... Rb8 $5 $14 {is worth looking at}) 14. hxg6 $16 fxg6 (14... hxg6 $2 15. Qh2 Bxg4 16. fxg4 $18) 15. Qh2 Qb6 16. g5 (16. Bg5 $142 Kf7 17. Bxf6 exf6 18. Qxd6 $16) 16... Nh5 $11 17. Nge2 Kf7 (17... a4 $5 $11 {should be investigated more closely}) 18. Nf4 {White threatens to win material: Nf4xh5} Be5 19. Qd2 (19. Na4 $5 Qa7 20. Qd2 Bxf4 21. Bxf4 $14) 19... Bxf4 $11 20. Bxf4 {Opposite coloured bishops appeared} Rh8 (20... Rb8 $5 21. b3 Qb4 $11) 21. d5 {White gets more space} c5 (21... a4 22. Be3 c5 23. Rxh5 gxh5 24. Qh2 $16) 22. Be3 (22. Rxh5 gxh5 23. Qh2 $18) 22... Rb8 $11 23. Na4 { White threatens to win material: Na4xb6} (23. b3 Qb4 24. Nb1 Ba6 $11) 23... Qb4 24. b3 Qa3+ {Black forks: c1+a2} 25. Kb1 $4 (25. Nb2 cxb3 26. Qc3 $15 (26. cxb3 Qxa2 27. Nd3 Qxb3 $19)) 25... cxb3 26. cxb3 Qxa4 27. Qc3 Bd7 (27... Rf8 { keeps an even firmer grip} 28. Bd2 $19) 28. Rd2 $4 {gives away a clear win} ( 28. Qxh8 $142 $1 {this is the best bet to save the position} Rxb3+ 29. axb3 Qxb3+ 30. Qb2 Qxe3 31. Qc1 Qb3+ 32. Ka1 Qa4+ 33. Kb2 Qb4+ 34. Ka2 $14) 28... Qb4 {Black prepares the advance a4} (28... Qb5 $142 {makes it even easier for Black} 29. Ka1 Rhf8 30. Qd3 $19) 29. Qb2 (29. Qxb4 {a last effort to resist the inevitable} Rxb4 30. Rb2 $19) 29... a4 30. Rd3 a3 (30... c4 {seems even better} 31. Bd2 Qb5 32. Re3 cxb3 33. axb3 axb3 34. Rc1 $19) 31. Qc2 (31. Qd2 { is not the saving move} Qb6 $19) 31... c4 32. Rd4 (32. Rc3 {is one last hope} cxb3 33. axb3 $19) 32... cxb3 33. axb3 Qxb3+ 34. Qxb3 Rxb3+ 35. Ka2 Rxe3 36. Rf1 Rb8 37. Rb1 Rxb1 38. Kxb1 Rxf3 39. Rb4 Ng3 40. Rb7 Bg4 41. Ka2 0-1