A43 Schmid Benoni (1.Nf3 c5 2.d4 cxd4)

This marks the 200th different opening variation featured here! It is a nice milestone to reach. Today I had to resign a game where apparently my opponent had taken my rook but for some reason or other I had not noticed it and did not take the rook with my remaining rook but instead moved my bishop so next move my opponent just took the other rook... I honestly don't know what is wrong, maybe some of the connections in my brain shut down sometimes or maybe just too many things going on at the same time that it is hard to concentrate on the current task. Sometimes I can see the whole board and other times I miss the most obvious things in the position. I hope my concentration is up to the task on Saturday when I need to go and play important team match. I am afraid that with my current state everything is possible but I might end up me blundering something that I would not blunder if I would be in my best form. I have added two mate in one, one mate in two, three and four puzzles today.

[Event "Corr game 15.5.2014-18.6.2014"] [Site "http://www.redhotpawn.com"] [Date "2014.05.15"] [Round "?"] [White "spearit"] [Black "Vierjoki, Timo"] [Result "0-1"] [ECO "A43"] [WhiteElo "1557"] [BlackElo "1863"] [Annotator "Tactical Analysis 2.10 (5s), TV"] [PlyCount "88"] [EventDate "2014.??.??"] 1. Nf3 (1. d4 c5 {0-1 (22) Crespo Arce,M-Aparicio Garcia,E (2133) Oviedo 2004}) 1... c5 {A04 Zukertort Opening: Sicilian Invitation} 2. d4 cxd4 {A43 Schmid Benoni} 3. Qxd4 Nc6 4. Qa4 Nf6 5. Bg5 (5. Bf4 g6 6. c3 Bg7 7. Nbd2 O-O 8. e4 d5 9. Rd1 Bd7 10. Qc2 Qc8 11. Bd3 Bg4 12. O-O dxe4 13. Bxe4 Nxe4 14. Qxe4 Bf5 15. Qe3 Qe6 16. Nb3 b6 17. Rd2 Qxe3 18. Bxe3 e5 19. Rd6 Rac8 {Zherebtsova,A (2146) -Oganian,M (2378) Samara 2014 0-1 (46)}) 5... e5 $146 {-0.12/21} (5... e6 $1 $17 {-0.92/18} 6. e3 Be7 7. Bd3 Qb6 8. Qb5 Qc7 9. Nc3 a6 10. Qc4 b5 11. Qh4 Bb7 12. a3 b4 13. axb4 Nxb4 14. Bxf6 Nxd3+ 15. cxd3 Bxf6 16. Qb4 Rb8 17. Qa5 Qxa5 18. Rxa5 Bxf3 19. gxf3 Bxc3+ 20. bxc3 Rb1+ {Crespo Arce,M-Aparicio Garcia,E (2133) Oviedo 2004 0-1}) 6. Nbd2 {-0.78/18} (6. Bxf6 $11 {-0.12/21} Qxf6 7. e4) 6... Be7 {0.05/21} ({Black should try} 6... h6 $17 {-0.78/18} 7. Bxf6 Qxf6) 7. e3 {-0.82/18} (7. e4 $11 {0.05/21 keeps the balance.}) 7... O-O {-0.33/21} ( 7... d6 $17 {-0.82/18}) 8. Be2 {-0.99/19} ({Better is} 8. Bxf6 $15 {-0.33/21} gxf6 9. Be2 (9. Qg4+ Kh8 $15)) 8... d5 9. O-O-O $2 {-2.31/20} (9. O-O $15 { -0.64/19}) 9... Be6 10. h4 {-2.70/18} (10. e4 $142 {-1.99/22} a6 11. Bxf6 Bxf6 12. exd5) 10... h6 11. Nc4 $2 {-4.29/21} (11. Bxf6 {-1.78/22 was necessary.} Bxf6 12. g4) 11... Qc7 (11... hxg5 $2 12. hxg5 Ne4 13. Ncd2 $19) 12. g4 $2 { -8.89/18} (12. Ncxe5 {-3.82/24} Nxe5 13. Bf4) 12... dxc4 13. Bxf6 Bxf6 14. g5 Be7 {[#] aiming for ...b5!} 15. gxh6 gxh6 16. Bxc4 Bxc4 17. Qxc4 {Threatens to win with Qg4+.} Rfd8 18. Rdg1+ Kf8 $1 ({Wrong is} 18... Kh8 $2 19. Qxf7 Rg8 20. Ng5 $1 $18) 19. Qg4 {[#]} Ke8 20. Qf5 Qd7 21. Rg8+ Bf8 22. Qh5 {-5.62/20} (22. Qxd7+ $142 {-3.93/23} Kxd7 23. Rh8) 22... Qd6 23. Rhg1 e4 24. Nd4 Nxd4 25. exd4 Qf4+ {-1.90/21} (25... Qxd4 $142 {-4.58/19} 26. Qxh6 Ke7 27. Qg5+ f6) 26. Kb1 $19 a6 27. R8g4 {-2.89/20} (27. R1g4 $17 {-1.53/26 is the only way for White.} Qf6 28. Rxe4+ Kd7 29. Qg4+ Kc7 30. Rf4) 27... Qxf2 28. Rxe4+ Kd7 $1 29. Qd5+ Kc8 30. Qc4+ Kb8 31. Rf1 Qg2 32. Ref4 Ka7 33. a4 {-3.87/20} (33. Rxf7 {-2.62/ 25 was called for.} Rac8 34. Qd3) 33... Rac8 34. Qd3 Rd7 35. a5 {-4.20/21} (35. Qe4 {-2.80/24 might work better.} Qxe4 36. Rxe4) 35... Qd5 36. c3 Bg7 37. Qh7 f6 38. Rf5 $2 {-15.68/19} (38. Qf5 {-3.36/22}) 38... Qe4+ 39. Ka1 Rcc7 $2 { -3.90/23} (39... Qd3 {-15.25/24 Strongly threatening ...Rxc3!} 40. h5 Rxc3 $1 41. Qxg7 Rxg7 42. bxc3 Qxc3+ 43. Kb1 Qd3+ 44. Ka2 Rg3 45. R5f3 Rxf3 46. Rxf3 Qxf3 47. Kb1 Qd1+ 48. Kb2 Qxd4+ 49. Kc1 Qd3 50. Kb2 f5 51. Kc1 f4 52. Kb2 f3 53. Kc1 f2 54. Kb2 f1=Q 55. Ka2 Qfb1#) 40. R1f4 $2 {-22.04/21} (40. Qg8 { -3.90/23}) 40... Qc2 {( -> ...Rc4)} 41. Qg8 Re7 {Black mates.} 42. d5 Re1+ 43. Ka2 Rxc3 44. d6 Qb1# {Accuracy: White = 11%, Black = 40%.} 0-1