Anthony Kosten vs Pierre Bailet (2018)

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Anthony Kosten vs Pierre Bailet
French Team Championship (2018), Brest FRA, rd 5, May-30
English Opening: King's English. Four Knights Variation Quiet Line (A28) · 0-1

ANALYSIS [x]

FEN COPIED

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Jul-29-19		g15713: E. 1 Black to move. Last: 29.gxf3 click for larger view Black's plan is obvious: (1) Place his rook behind a-pawn and (2) Move the king towards the passed pawn and (3) If the defending rook retreats, then advance the pawn. Game continuation went: 29...Kf8 30. Ra6 Ra8 31. f4 Ke7 32. Kg2 Kd7 33. Kf3 Kc7 34. e4 Kb7 35. Rd6 Rc8 36. e5 a5 37. Rd7+ Rc7 38. Rd4 Kc6 39. f5 Ra7 40. Ke4 a4 41. Rd6+ Kc7 42. Rd1 a3 43. Rc1+ Kd7 44. Rd1+ Ke7 45. h5 Ra4+ 46. Kd5 a2 47. Ra1 Ra5+ 48. Kd4 Ra4+ 49. Kd5 Kd7 50. Kc5 g6 51. hxg6 hxg6 52. e6+ Ke7 53. exf7 g5 54. Kd5 Kxf7 55. Ke5 Ra5+ 56. Ke4 Kf6 57. Ke3 Kxf5 58. Kf3 Ra3+ 59. Ke2 Ke4 60. Kd2 Kf3 61. Ke1 g4 62. Kf1 Rb3 0-1 Where could White have improved? How about 52.fxg6 fxg6 leading to: E. 1.1 White to move. Last: 52...fxg6 click for larger view FinalGen says Black wins, example line: 1. Kb5 Ra8 2. f4 Ke6! 3. Kc4 Kf5! 4. Kd4 Ra3! 5. Kc4 Ra6 6. Kd5 Ra4 7. Kd6 Ra7! 8. Kc5 Kxf4 9. e6 Ke5! 10. e7 Rxe7 11. Rxa2 Kf4 12. Kd6 Re1 13. Ra4+ Re4 14. Ra1 g5 15. Kd5 Re3 E. 1.2 Winning Rook + pawn versus Rook ending - verified by Shredder click for larger view Ok that failed, we need to go back earlier with a better plan: (1) Blockade the passed pawn with one's king <"If the passed pawn is blocked by an opposing rook, then it is very difficult for this rook to have any other influence on the game. If it moves, the passed pawn will edge nearer to promotion."> John Emms (2) Kingside counterplay <"the best chance for a successful defense in this sort of position is counterplay on the kingside: creation of a passed pawn or weakening the opponent's position."> Dvoretsky continued

Jul-29-19		g15713: E. 1.3 After game continuation 29...Kf8 30.Ra6 Ra8 click for larger view How about 31. Kf1 Ke7 32. Ke2 - keeps our options open to where the White king is needed, also advance the h-pawn to h6 and disrupt Black's pawn structure. Stockfish after 6-minute analysis gives: 1) =0.00 (37 ply) 32...Kd8 33.f4 Kc7 34.f5 Kb7 35.Rd6 Kc7 36.Ra6 2) =0.00 (36 ply) 32...Kd7 33.h5 Kc7 34.h6 Kb7 35.Rd6 Kc7 36.Ra6 E. 1.4 After 31.Kf1 Ke7 32.Ke2 Kd7 33.h5 h6 leads to: click for larger view Stockfish after 6-minute analysis gives: 1) =0.00 (41 ply) 34.Kd3 Kc7 35.Kc4 Kb7 36.Ra1 Kc6 37.f4 a5 38.Rg1 Rg8 39.f5 Kd6 40.Kd4 a4 41.Ra1 Ra8 42.Ra3 Kc6 43.Kc4 Kb6 44.e4 Re8 45.f3 Ka5 46.Ra1 f6 47.Rg1 Re7 48.Ra1 Rc7+ 49.Kd5 Kb4 50.Rb1+ Ka5 51.Ra1 2) =0.00 (41 ply) 34.f4 Kc7 35.Kd3 Kb7 36.Ra1 a5 37.Rg1 Rg8 38.f5 Kc6 39.Kc4 Kd6 40.Kd4 a4 41.Ra1 Ra8 42.Ra3 Kc6 43.Kc4 Kb6 44.Kb4 Kc6 45.e4 f6 46.Kc4 Re8 47.f3 Ra8 48.f4 Re8 49.Kd4 Rd8+ 50.Kc4 Re8 3) =0.00 (40 ply) 34.Kd2 Kc7 35.Kc3 Kb7 36.Rd6 Rc8+ 37.Kb4 Rb8 38.Kc5 Rc8+ 39.Kb4 E. 1.5 After 31.Kf1 Ke7 32.Ke2 Kd7 33.h5 g3 leads to: click for larger view Stockfish after 25-minute analysis gives: 1) +0.12 (44 ply) 34.Kd3 gxh5 35.Rh6 a5 36.Rxh5 a4 37.Rxh7 Ke6 38.Kc2 f5 39.Rh6+ Ke5 40.Kb2 Rg8 41.Ra6 Rg2 42.f4+ Kd5 43.Rxa4 Rxf2+ 44.Kc3 Ke6 45.Ra5 Kf6 46.Kd3 Ke6 47.Ra3 Rb2 48.Kc3 Rf2 49.Ra6+ Kf7 50.Kd3 Rh2 51.Ra7+ Kf6 52.Ra3 Rf2 53.Ra6+ Kf7 54.Kd4 Re2 55.Ra5 Ke6 56.Ra3 Rd2+ 57.Kc4 Rf2 58.Ra5 Kf6 59.Ra4 Rc2+ 60.Kd3 2) +0.12 (44 ply) 34.Kd3 gxh5 35.Rh6 a5 36.Rxh5 a4 37.Rxh7 Ke6 38.Kc2 f5 39.Rh6+ Ke5 40.Kb2 Rg8 41.Ra6 Rg2 42.f4+ Kd5 43.Rxa4 Rxf2+ 44.Kc3 Ke6 45.Ra5 Kf6 46.Kd3 Ke6 47.Ra3 Rb2 48.Kc3 Rf2 49.Ra6+ Kf7 50.Kd3 Rh2 51.Ra7+ Kf6 52.Ra3 Rf2 53.Ra6+ Kf7 54.Kd4 Re2 55.Ra5 Ke6 56.Ra3 Rd2+ 57.Kc4 Rf2 58.Ra5 Kf6 59.Ra4 Rc2+ 60.Kd3 3) +0.08 (43 ply) 34.h6 Rb8 35.Rxa7+ Ke6 36.Ra6+ Ke7 37.Ra4 Rb1 38.Rh4 Rb2+ 39.Kf1 Rb1+ 40.Kg2 Kf6 41.Rf4+ Ke6 42.Kg3 Rg1+ 43.Kh2 Rb1 44.Rd4 Rb5 45.Rh4 Kf6 46.f4 g5 47.fxg5+ Rxg5 48.f4 Rg6 49.e4 Rg8 50.Kh3 Rg1 51.Rh5 Kg6 52.Ra5 Kxh6 53.Kh4 f6 54.Ra6 Kg7 55.Ra7+ Kg6 56.f5+ Kh6 57.Re7 Rg4+ 58.Kh3 Rg7 59.Re8 Kg5 60.Kg3 h5

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