Efim Bogoljubov vs Imre Koenig (1922)

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Efim Bogoljubov vs Imre Koenig
Vienna (1922), Vienna AUT, rd 2, Nov-14
Spanish Game: Closed Variations. Morphy Attack (C78) · 1/2-1/2

ANALYSIS [x]

FEN COPIED

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May-26-08		Judah: I wonder whether this game was drawn by agreement or by the fifty-move rule.

May-26-08		Judah: never mind, stupid comment

May-26-08		whiteshark: Please furnish us more regularly with such praiseworthy information. :D

Apr-13-21		g15713: E. 1.0 White to move at 44 click for larger view As an alternative to 44. Rh2 it looked liked going after d-pawn would have won: 46. Ra6 gxf5 47. Rxd6 fxe4+ 48. Kxe4 Kg7 49. Kxe5 E. 1.1 Black to move click for larger view Syzygy says Black is losing 'https://syzygy-tables.info/?fen=8/5... Game continued: 44. Rh2 h5 E. 1.2 White to move at 45 click for larger view As an alternative to 45. Ke3 protecting the knight with 45. g4 wins: 45. g4 Kg8 46. Kg3 gxf5 47. gxf5 Rg7+ 48. Kh4 Kf7 49. Ra2 Rg1 50. Kxh5 E. 1.3 Black to move at 50 click for larger view FinalGen says this position is winning for White for example White wins in 54 1... Rf1 2. Kg5 Rg1+ 3. Kh4 Rf1 4. Rh2 Rg1 5. Rh3 Kf6 6. Rg3 Rh1+ 7. Kg4 Rf1 8. Kh3 Rh1+ 9. Kg2 Rh4 10. Kf3 Rf4+ 11. Ke3 Kf7 12. Rg6 Ke7 13. Rg7+ Kd8 14. Ra7 Ke8 15. Kd3 Kd8 16. Ra4 Kd7 17. Rb4 Kc8 18. Rc4+ Kd7 19. Kc3 Rh4 20. Kb4 Rh8 21. Kb5 Rb8+ 22. Ka6 Rb1 23. Ka5 Rh1 24. Kb5 Rh8 25. f6 Rb8+ 26. Ka6 Ke8 27. Rc6 Kf7 28. Rxd6 Rb4 29. Re6 Rxe4 30. Kb5 Re2 31. Kc4 e4 32. Kc5 e3 33. Kd6 Re1 34. Ke5 Ra1 35. Re7+ Kf8 36. Kd6 Ra6+ 37. Kc5 Ra5+ 38. Kc4 Ra1 39. Rxe3 Ra6 40. Kb5 Rxf6 41. Kc5 E. 1.4 click for larger view Game continued: 45.Ke3 gxf5 46.Rxh5+ Kg7 47.Rg5+ Kh6 48.Rxf5 Rxf5 49.exf5 E. 1.5 Black to move at 49 click for larger view Syzygy says it is a tablebase draw 'https://syzygy-tables.info/?fen=8/8... Game continued: 49...Kg5 50.g4 Kf6 51.Kf3 Kg5 52.Kg3 Kf6 53.Kh4 e4 54.Kh3 Ke5 55.Kg3 Kxd5 56.Kf4 Kd4 57.f6 e3 58.f7 e2 59.f8=Q e1=Q 60.Qxd6+ Leading to a drawing Queen plus knight pawn on the 4th rank versus Queen ending - see next post

Apr-13-21		g15713: <"The defensive strategy applied by König in the next example is very good."> Müller This game was played back in November of 1922, almost a century ago, I second Müller's opinion about the queen ending. F. 1.0 Black to move at 60 click for larger view Syzygy says it is a tablebase draw 'https://syzygy-tables.info/?fen=8/8... 60...Kc4! A blunder would be 60...Kc3 61. Qe5+ <"when White simplifies into a won pawn ending"> Müller Game continued: 61.g5 Qf2+ 62.Kg4 Qg2+ 63.Kf5 Qc2+ 64.Kf6 Qf2+ 65.Ke7 Qa7+ 66.Qd7 Qa3+ 67.Kf6 Qf3+ 68.Kg7 Qc3+ 69.Kh7 Kb3! <"The best place for the defending king is in front of the pawn and the second-best place is in the corner opposite its promotion square."> Nunn 70.g6 Qc2 71.Qe6+ Kb2 72.Kg8 Qd3 73.g7 Qd8+ 74.Kf7 Qc7+ 75.Kf6 Qf4+ 76.Kg6 Qg3+ 77.Kh7 Qh4+ 78.Qh6 Qe4+ 79.Kh8 Qe5! Black has control of the important a1-h8 diagonal, and his king is tucked in the drawing zone of southwest corner. 80.Qh4 Kb1 81.Qh1+ Kb2 82.Qg2+ Kb1 83.Qg6+ Ka1 84.Kh7 Qh2+! 85.Qh6 Qc2+! 86.Kh8 Qc3! <only move> F. 1.1 click for larger view 87.Qh1+ Kb2 88.Qg2+ Ka1! <only move> F. 1.2 click for larger view 89.Kh7 Qd3+ 90.Kh6 Qd6+ 91.Kh5 Qe5+ 92.Kh4 Qf4+ 93.Qg4 Qh6+ 94.Kg3 Qe3+ 95.Kg2 Qd2+! 96.Kf3 Qd3+ 97.Kf2 Qd2+ 98.Kf1 Qc1+ 99.Ke2 Qc2+ 100.Ke3 Qc3+ 101.Ke4 Qc4+ 102.Kf5 Qf7+ 103.Ke5 Qe7+ 104.Kd5 Qf7+ 105.Kc6 Qf6+! <only move> F. 1.3 click for larger view 106.Kb5 Qb2+! <only move> F. 1.4 click for larger view 107.Kc4 Qa2+ 108.Kc3 Qb2+ 109.Kd3 Qb1+ 110.Kd2 Qb2+ 111.Ke1 Qc3+ 112.Kf2 Qd2+ 113.Kf3 Qd3+ 114.Kf4 Qd4+ 1/2-1/2

Apr-14-21		RookFile: A lot of these queen endings are counter intuitive. When you are first learning chess, it comes as a surprise that you want to run the king far away from the pawn to some remote corner of the board. The goal, of course, is to avoid forced queen trades while repeatedly checking with your queen.

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