問題 768221: 白が引き分けとするために

IM Alberto Barp (2412) - GM Alb David (2517)
81st ch-ITA 2022 Cagliari ITA, 2022.11.13 IM Alberto Barp (2412) - GM Alb David (2517)
81st ch-ITA 2022 Cagliari ITA, 2022.11.13

1.d4
Nf6
2.c4
e6
3.Nf3
d5
4.g3
Bb4+
5.Bd2
a5
6.Bg2
O-O
7.Qc2
c5
8.cxd5
cxd4
9.a3
Bxd2+
10.Qxd2
Qxd5
11.Qxd4
Qb5
12.Qe5
Nd5
13.Nc3
Nxc3
14.Qxc3
Nc6
15.O-O
e5
16.e3
Bf5
17.Rfd1
Rfe8
18.Nd2
Bg4
19.Rdc1
Be6
20.Ne4
Red8
21.Nc5
Bd5
22.Bf1
Qb6
23.Na4
Qc7
24.Qc5
Bf3
25.Nb6
Rab8
26.b4
axb4
27.axb4
Rd6
28.b5
Qd8
29.Nc4
Rd5
30.Qb6
Nb4
31.Qa7
Rxb5
32.Qa4
Bc6
33.Na5
Rb6
34.Nxc6
Nxc6
35.Bg2
Rb2
36.Bxc6
Qf6
37.Rc2
Rxc2
38.Qxc2
Qxc6
39.Qxc6
bxc6
40.Ra6
Rc8
41.Kf1
Kf8
42.Ra7
h5
43.h4
Rb8
44.Rc7
Rb1+
45.Kg2
Rc1
46.e4
Rc3
47.f4
exf4
48.gxf4
g6
49.Kf2
Rh3
50.Rxc6
Rxh4
51.Kg3
Rg4+
52.Kf3
Kg7
53.e5
g5
54.fxg5
Rxg5
55.Kf4
Rg6
56.Rc1
Kh6
57.Rc8
Rg4+
58.Kf5
Kg7
59.Rc7
Rg6
60.Rc3
Rg1
61.Rc7
h4
62.e6
h3
63.Rxf7+
Kg8
64.Kf6
h2
65.e7
Re1
1. 解決策:65...Re1
2. 66.Rf8+
3. Kh7
4. 67.Rf7+
5. Kg8
6. 1. 67...Kh8
  2. 68.Kg6
  3. Rg1+
  4. 69.Kf5
  5. Re1
  6. 70.Kg6
  7. Rg1+
  8. 71.Kf5
  9. Re1
  10. 72.Kg6 反復による引き分け
  1. 67...Kh6
  2. 68.Rf8
  3. Rf1+
  4. 69.Ke6
  5. Re1+
  6. 70.Kf6
  7. Rf1+
  8. 71.Ke6
  9. Re1+
  10. 72.Kf6 反復による引き分け
7. 68.Rf8+
8. Kh7
9. 69.Rf7+
10. Kh6
11. 1. 69...Kh8
  2. 70.Kg6
  3. Rg1+
  4. 71.Kf5
  5. Re1
  6. 72.Kg6
  7. Rg1+
  8. 73.Kf5
  9. Re1
  10. 74.Kg6 反復による引き分け
12. 70.Rf8
13. Rf1+
14. 71.Ke6
15. 1. 71.Ke5
  2. h1=Q
  3. 72.Rh8+
  4. Kg7
  5. 73.Rxh1
  6. Rxh1
  7. 74.e8=N+
  8. Kg6 with a drawn endgame, for example:
  9. 1. 74...Kh6 with a drawn endgame, for example:
    2. 75.Nf6
    3. Kg6
    4. 76.Ne4
    5. Ra1
    6. 77.Nc3
    7. Kg5
    8. 78.Nd5
    9. Kg4
    10. 79.Ke4
    11. Ra4+
    12. 80.Ke5
    13. Kf3
    14. 81.Nf6
    15. Rf4
    16. 82.Nd5
    17. Rf8
    18. 83.Nb6
    19. Re8+
    20. 84.Kd4
    21. Rd8+
    22. 85.Nd5
    23. Re8
    24. 86.Kd3
    25. Re1
    26. 87.Nc3
    27. Kg4
    28. 88.Ne2
    29. Kf5
    30. 89.Nd4+
    31. Kf4
    32. 90.Nb5
    33. Rd1+
    34. 91.Kc3
    35. Ke4
    36. 92.Kb4
    37. Rd8
    38. 93.Kc5
    39. Rc8+
    40. 94.Kd6
    41. Rc2
    42. 95.Na7
    43. Kd3
    44. 96.Nc6
    45. Ke4
    46. 97.Nb4
    47. Rh2
    48. 98.Nc6
    49. Rh5
    50. 99.Ne7
    51. Rh7
    52. 100.Nc6
    53. Rh5
    54. 101.Ne7
    55. Rh7
    56. 102.Nc6
    57. Rh5
    1. 74...Kf8 with a drawn endgame, for example:
    2. 75.Nd6
    3. Ke7
    4. 76.Nf5+
    5. Kd7
    6. 77.Nd4
    7. Rh5+
    8. 78.Ke4
    9. Kd6
    10. 79.Nf5+
    11. Kc5
    12. 80.Ke5
    13. Rg5
    14. 81.Kf4
    15. Rg8
    16. 82.Kf3
    17. Re8
    18. 83.Kf4
    19. Kd5
    20. 84.Ng3
    21. Re6
    22. 85.Kf5
    23. Rc6
    24. 86.Ne2
    25. Rc5
    26. 87.Kf4
    27. Rc2
    28. 88.Ke3
    29. Rc8
    30. 89.Kd3
    31. Kc5
    32. 90.Ke4
    33. Re8+
    34. 91.Kd3
    35. Rd8+
    36. 92.Ke4
    37. Kc4
    38. 93.Nc1
    39. Re8+
    40. 94.Kf3
    41. Rh8
    42. 95.Ne2
    43. Rf8+
    44. 96.Ke3
    45. Re8+
    46. 97.Kf3
    47. Ra8
    48. 98.Ke4
    49. Re8+
    50. 99.Kf3
    51. Ra8
    52. 100.Ke4
    53. Re8+
    54. 101.Kf3
  10. 75.Nd6
  11. Rh5+
  12. 76.Ke4
  13. Kf6
  14. 77.Ne8+
  15. Kf7
  16. 78.Nd6+
  17. Ke6
  18. 79.Nc4
  19. Rh4+
  20. 80.Kd3
  21. Kd5
  22. 81.Nb6+
  23. Ke5
  24. 82.Nd7+
  25. Kf5
  26. 83.Nb6
  27. Rh3+
  28. 84.Kc4
  29. Ke5
  30. 85.Nd7+
  31. Kd6
  32. 86.Nf6
  33. Ke5
  34. 87.Nd5
  35. Kd6
  36. 88.Nb4
  37. Rh1
  38. 89.Na2
  39. Rh4+
  40. 90.Kd3
  41. Kd5
  42. 91.Nc3+
  43. Ke6
  44. 92.Ne2
  45. Ke5
  46. 93.Nc3
  47. Rd4+
  48. 94.Ke3
  49. Rd8
  50. 95.Ne2
  51. Rc8
  52. 96.Kd2
  53. Kd5
  54. 97.Kd3
  55. Kc5
  56. 98.Ke4
  57. Re8+
  58. 99.Kd3
  59. Rd8+
  60. 100.Ke4
  61. Kc4
  62. 101.Nc1
  63. Re8+
  64. 102.Kf3
  65. Rh8
  66. 103.Ne2
  67. Rf8+
  68. 104.Ke3
  69. Re8+
  70. 105.Kf3
  71. Ra8
  72. 106.Ke4
  73. Re8+
  74. 107.Kf3
  75. Ra8
  76. 108.Ke4
  77. Re8+
  78. 109.Kf3
16. 71...Re1+
17. 72.Kf6
18. Rf1+
19. 73.Ke6
20. 1. 73.Ke5
  2. h1=Q
  3. 74.Rh8+
  4. Kg7
  5. 75.Rxh1
  6. Rxh1
  7. 76.e8=N+
  8. Kg6 with a drawn endgame, for example:
  9. 1. 76...Kh6 with a drawn endgame, for example:
    2. 77.Nf6
    3. Kg6
    4. 78.Ne4
    5. Ra1
    6. 79.Nc3
    7. Kg5
    8. 80.Nd5
    9. Kg4
    10. 81.Ke4
    11. Ra4+
    12. 82.Ke5
    13. Kf3
    14. 83.Nf6
    15. Rf4
    16. 84.Nd5
    17. Rf8
    18. 85.Nb6
    19. Re8+
    20. 86.Kd4
    21. Rd8+
    22. 87.Nd5
    23. Re8
    24. 88.Kd3
    25. Re1
    26. 89.Nc3
    27. Kg4
    28. 90.Ne2
    29. Kf5
    30. 91.Nd4+
    31. Kf4
    32. 92.Nb5
    33. Rd1+
    34. 93.Kc3
    35. Ke4
    36. 94.Kb4
    37. Rd8
    38. 95.Kc5
    39. Rc8+
    40. 96.Kd6
    41. Rc2
    42. 97.Na7
    43. Kd3
    44. 98.Nc6
    45. Ke4
    46. 99.Nb4
    47. Rh2
    48. 100.Nc6
    49. Rh5
    50. 101.Ne7
    51. Rh7
    52. 102.Nc6
    53. Rh5
    54. 103.Ne7
    55. Rh7
    56. 104.Nc6
    57. Rh5
    1. 76...Kf8 with a drawn endgame, for example:
    2. 77.Nd6
    3. Ke7
    4. 78.Nf5+
    5. Kd7
    6. 79.Nd4
    7. Rh5+
    8. 80.Ke4
    9. Kd6
    10. 81.Nf5+
    11. Kc5
    12. 82.Ke5
    13. Rg5
    14. 83.Kf4
    15. Rg8
    16. 84.Kf3
    17. Re8
    18. 85.Kf4
    19. Kd5
    20. 86.Ng3
    21. Re6
    22. 87.Kf5
    23. Rc6
    24. 88.Ne2
    25. Rc5
    26. 89.Kf4
    27. Rc2
    28. 90.Ke3
    29. Rc8
    30. 91.Kd3
    31. Kc5
    32. 92.Ke4
    33. Re8+
    34. 93.Kd3
    35. Rd8+
    36. 94.Ke4
    37. Kc4
    38. 95.Nc1
    39. Re8+
    40. 96.Kf3
    41. Rh8
    42. 97.Ne2
    43. Rf8+
    44. 98.Ke3
    45. Re8+
    46. 99.Kf3
    47. Ra8
    48. 100.Ke4
    49. Re8+
    50. 101.Kf3
    51. Ra8
    52. 102.Ke4
    53. Re8+
    54. 103.Kf3
  10. 77.Nd6
  11. Rh5+
  12. 78.Ke4
  13. Kf6
  14. 79.Ne8+
  15. Kf7
  16. 80.Nd6+
  17. Ke6
  18. 81.Nc4
  19. Rh4+
  20. 82.Kd3
  21. Kd5
  22. 83.Nb6+
  23. Ke5
  24. 84.Nd7+
  25. Kf5
  26. 85.Nb6
  27. Rh3+
  28. 86.Kc4
  29. Ke5
  30. 87.Nd7+
  31. Kd6
  32. 88.Nf6
  33. Ke5
  34. 89.Nd5
  35. Kd6
  36. 90.Nb4
  37. Rh1
  38. 91.Na2
  39. Rh4+
  40. 92.Kd3
  41. Kd5
  42. 93.Nc3+
  43. Ke6
  44. 94.Ne2
  45. Ke5
  46. 95.Nc3
  47. Rd4+
  48. 96.Ke3
  49. Rd8
  50. 97.Ne2
  51. Rc8
  52. 98.Kd2
  53. Kd5
  54. 99.Kd3
  55. Kc5
  56. 100.Ke4
  57. Re8+
  58. 101.Kd3
  59. Rd8+
  60. 102.Ke4
  61. Kc4
  62. 103.Nc1
  63. Re8+
  64. 104.Kf3
  65. Rh8
  66. 105.Ne2
  67. Rf8+
  68. 106.Ke3
  69. Re8+
  70. 107.Kf3
  71. Ra8
  72. 108.Ke4
  73. Re8+
  74. 109.Kf3
  75. Ra8
  76. 110.Ke4
  77. Re8+
  78. 111.Kf3
21. 73...Re1+
22. 74.Kf6 反復による引き分け
66.Rf8+
Kh7
67.Rf7+
Kh6
68.Rf8
Kh7
69.Rf7+

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問題 768221: 白 が 引き分けとするために

問題 768221: 白 が 引き分けとするために

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問題 768221: 白が引き分けとするために

問題 768221: 白が引き分けとするために