A00 Irregular Openings (1.a3 e5 2.Nc3)

[Event "Friendly Game, 2m + 0s"] [Site "Beginners"] [Date "2008.07.16"] [Round "?"] [White "trallala"] [Black "Vierjoki, Timo"] [Result "0-1"] [ECO "A00"] [BlackElo "1677"] [Annotator "Tactical Analysis 2.10 (30s)"] [PlyCount "84"] [EventDate "2008.07.08"] [SourceTitle "playchess.com"] 1. a3 e5 2. Nc3 {A00 Irregular Openings} d5 3. Na2 (3. d4 e4 4. Bf4 c6 5. Qd2 Nf6 6. f3 Be7 7. fxe4 dxe4 8. e3 Bf5 9. Nge2 Nbd7 10. d5 cxd5 11. Nxd5 Nxd5 12. Qxd5 Be6 13. Qxb7 Nc5 14. Qc6+ Bd7 15. Qd5 O-O 16. Rd1 Qc8 17. Bd6 Bxd6 { Barmbold,J-Karpatchev,A (2477) Saarlouis 1999 1-0 (33)}) (3. e4 dxe4 4. Nxe4 f5 5. Ng3 Bc5 6. Nh3 Be6 7. d3 Nf6 8. Nh5 Qe7 9. Nxf6+ Qxf6 10. Qh5+ g6 11. Qh6 Bf8 12. Qg5 Qf7 13. Qd2 h6 14. f3 Nc6 15. Be2 Bg7 16. O-O O-O-O 17. Nf2 g5 { Kirch,F (1644)-Dyroff,R (1806) Nuemberg 2017 0-1 (37)}) 3... c5 4. d3 $146 (4. c3 Nc6 5. g3 f5 6. e3 Nf6 7. h3 Bd6 8. d3 O-O 9. Bg2 Be6 10. Ne2 Qd7 11. b3 b5 12. Bb2 a5 13. Rb1 b4 14. a4 c4 15. dxc4 dxc4 16. Nec1 Rad8 17. O-O Qc7 18. cxb4 Nxb4 {Kristbergsson,B (1159)-Ingvarsson,K (1860) Reykjavik 2015 0-1 (32)}) 4... Nc6 5. e3 Nf6 {-1.01/26} (5... Bd6 $142 {-1.60/25} 6. Nc3 Nf6) 6. f4 $2 { -2.55/25} (6. Nf3 $17 {-1.01/26}) 6... exf4 7. exf4 Qe7+ {-1.50/29} (7... Bd6 $19 {-2.70/24} 8. Nf3 O-O) 8. Qe2 {-2.19/24} (8. Be2 $17 {-1.50/29}) 8... Nd4 9. Qxe7+ Bxe7 10. Kd1 {-2.58/26} (10. Kd2 {-1.64/26 might work better.}) 10... Bg4+ $2 {-0.74/25} (10... Ng4 $19 {-2.58/26 and Black stays clearly on top. Strongly threatening ...Nf2+.} 11. Nh3 Bf5) 11. Be2 {-1.79/26} (11. Ne2 $17 { -0.74/25}) 11... Bxe2+ {-0.87/27} (11... Nxe2 $19 {-1.79/26 is more deadly.} 12. Nxe2 Bd7) 12. Nxe2 $17 {[#]} Nc6 {-0.71/27} (12... Nf5 $142 $1 {-1.37/24} 13. Nac3 O-O-O) 13. Re1 O-O 14. f5 {-1.43/25} (14. b4 $15 {-0.48/27}) 14... Ng4 {-0.78/29} (14... Rfe8 $142 {-1.43/25} 15. Nac3 d4) 15. Nf4 {-1.42/26} (15. Bf4 $142 {-0.78/29}) 15... Nxh2 $2 {0.17/28} (15... Rae8 $17 {-1.42/26 White must now prevent ...Nd4.} 16. Nc3 Bg5 17. Ncxd5 Rxe1+ 18. Kxe1 Nd4) 16. Nxd5 $11 Bd6 17. f6 g6 {0.87/27} (17... Rae8 $11 {0.00/33}) 18. Ne7+ $2 {-0.79/30 [#]} (18. Nac3 $16 {0.87/27}) 18... Nxe7 $1 $17 19. fxe7 Rfe8 20. Bg5 {-1.18/26} ({ White should try} 20. Nc3 $15 {-0.68/31}) 20... Ng4 21. Nc3 {-1.58/26} ({ Better is} 21. c4 {-0.92/32}) 21... h6 22. Bh4 $2 {-2.74/27} (22. Bd2 $17 { -1.22/30}) 22... g5 $19 23. Bxg5 $2 {-5.36/24} (23. Ne4 {-2.22/30 was the crucial defense.} Bxe7 24. Nf2) 23... hxg5 24. Nd5 Ne5 25. Nf6+ Kg7 26. Nxe8+ Rxe8 27. d4 $2 {-4.83/24} (27. Kd2 {-2.84/30 is a better defense.}) 27... cxd4 28. Kd2 Ng6 29. Kd3 Nf4+ 30. Kc4 {-6.69/25} (30. Kxd4 $142 {-4.26/27} Bxe7 31. g3) 30... Nxg2 31. Rg1 Ne3+ 32. Kxd4 Nf5+ 33. Kc3 Bxe7 34. Raf1 Bf6+ 35. Kb3 Nd6 36. Rd1 Nb5 37. Rd7 Re3+ 38. Ka2 Re2 39. Rxb7 Nd4 40. Rxa7 Rxc2 41. Rd7 $2 {-9.85/29} (41. Rb7 {-3.78/30} Ne2 42. Rg4) 41... Nb5 42. Rd5 {-#4/29} (42. Rb1 $19 {-5.16/31} Re2 43. Kb3) 42... Nc7 {-4.05/29 Accuracy: White = 19%, Black = 26%.} (42... Rxb2+ $142 {-#4/29} 43. Ka1 Rc2+ 44. Re5 Bxe5+ 45. Kb1 Nxa3#) 0-1