Another Otto Blathy Cook/Dual

Discussion of anything and everything relating to chess playing software and machines.

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acase
Posts: 1004
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Another Otto Blathy Cook/Dual

Post by acase »

after black's 6th move, black gets mated in 6. Perhaps black should play 6...Rh8! instead, the mate in 6 is also apparent after black's 14th move, then we have a mate in 8 after black's 33rd move, another mate in 8 after black's 42nd move and so on and so fourth:

[pgn][Event "?"]
[Site "?"]
[Date "1890"]
[Round "?"]
[White "Otto Blathy"]
[Black "?"]
[Result "1-0"]
[TimeControl "300+3"]
[SetUp "1"]
[FEN "b1B2b1r/rn2pKp1/k3PpPp/n1Pp1p1P/3N1R2/1pP5/1Pp5/8 w - - 0 1"]
[Termination "normal"]
[PlyCount "197"]
[WhiteType "program"]
[BlackType "program"]

1. Rf1 Nc4 2. Ra1+ Na5 3. Ke8 Rg8 4. Kd7 Rh8 5. Kc7 Rg8 6. Rc1 Nc4 7. Rf1
(7. Kc6 {+M6/245 17 Cook/Dual Stockfish_23040506_x64_bmi2} Na5+ 8. Kxd5 f4
9. c4 f3 10. Nb5 Nxc4 11. Kxc4 f2 12. Ra1#) 7. .. Na5 8. Ra1 Rh8 9. Kd7 Rg8
10. Ke8 Rh8 11. Kf7 f4 12. Ke8 Rg8 13. Kd7 Rh8 14. Kc7 Rg8 15. Rc1 (15. c4
{+M6/242 5 Stockfish_23040506_x64_bmi2} dxc4 16. Ra4 c3 17. Rb4 Nc4 18.
Nxb3 f3 19. Ra4+ Kb5 20. Bd7#) 15. .. Nc4 16. Rf1 Na5 17. Ra1 Rh8 18. Kd7
(18. c4 {+M6/245 12 Stockfish_23040506_x64_bmi2} dxc4 19. Ra4 c3 20. Rb4
Nc4 21. Nxb3 cxb2 22. Ra4+ Na5 23. Rxa5#) 18. .. Rg8 19. Ke8 Rh8 20. Kf7 f3
21. Ke8 Rg8 22. Kd7 Rh8 23. Kc7 Rg8 24. Rc1 Nc4 25. Rf1 (25. Kc6 {+M8/131 6
Stockfish_23040506_x64_bmi2} Na5+ 26. Kxd5 Rh8 27. c4 f2 28. Nb5 Nxc4 29.
Kxc4 f1=Q+ 30. Rxf1 c1=Q+ 31. Rxc1 Rh7 32. Ra1#) 25. .. Na5 26. Ra1 Rh8 27.
Kd7 Rg8 28. Ke8 Rh8 29. Kf7 f2 30. Ke8 Rg8 31. Kd7 Rh8 32. Kc7 Rg8 33. Rc1
Nc4 34. Rf1 (34. Kc6 {+M8/201 0 Stockfish_23040506_x64_bmi2} Na5+ 35. Kxd5
f5 36. c4 f1=Q 37. Rxf1 f4 38. Nb5 Nxc4 39. Kxc4 c1=Q+ 40. Rxc1 Ka5 41.
Ra1#) 34. .. Na5 35. Ra1 Rh8 36. Kd7 Rg8 37. Ke8 Rh8 38. Kf7 f5 39. Ke8 Rg8
40. Kd7 Rh8 41. Kc7 Rg8 42. Rc1 Nc4 43. Rf1 (43. Kc6 {+M8/170 1
Stockfish_23040506_x64_bmi2} Na5+ 44. Kxd5 Rh8 45. c4 Rh7 46. Nb5 Nxc4 47.
Kxc4 f1=Q+ 48. Rxf1 c1=Q+ 49. Rxc1 Ka5 50. Ra1#) 43. .. Na5 44. Ra1 Rh8 45.
Kd7 Rg8 46. Ke8 Rh8 47. Kf7 f4 48. Ke8 Rg8 49. Kd7 Rh8 50. Kc7 Rg8 51. Rc1
(51. c4 {+M6/245 6 Stockfish_23040506_x64_bmi2} dxc4 52. Ra4 c3 53. Rb4 Nc4
54. Nxb3 c1=Q 55. Ra4+ Kb5 56. Bd7#) 51. .. Nc4 52. Rf1 Na5 53. Ra1 Rh8 54.
Kd7 Rg8 55. Ke8 Rh8 56. Kf7 f3 57. Ke8 Rg8 58. Kd7 Rh8 59. Kc7 Rg8 60. Rc1
Nc4 61. Rf1 Na5 62. Ra1 Rh8 63. Kd7 Rg8 64. Ke8 Rh8 65. Kf7 f1=Q 66. Rxf1
Nc4 67. Ra1+ Na5 68. Ke8 Rg8 69. Kd7 Rh8 70. Kc7 Rg8 71. Rc1 Nc4 72. Rf1
Na5 73. Ra1 Rh8 74. Kd7 Rg8 75. Ke8 Rh8 76. Kf7 f2 77. Ke8 Rg8 78. Kd7 Rh8
79. Kc7 Rg8 80. Rc1 Nc4 81. Rf1 Na5 82. Ra1 Rh8 83. Kd7 Rg8 84. Ke8 Rh8 85.
Kf7 f1=Q+ 86. Rxf1 Nc4 87. Ra1+ Na5 88. Ke8 Rg8 89. Kd7 Rh8 90. Kc7 Rg8 91.
Rc1 Nc4 92. Rf1 Na5 93. Ra1 Rh8 94. Kd7 Rg8 95. Ke8 Rh8 96. Kf7 c1=Q 97.
Rxc1 Nc6 98. Ra1+ Na5 99. Ra4 1-0
[/pgn]

Perhaps 6...Rh8 should be played instead
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acase
Posts: 1004
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Re: Another Otto Blathy Cook/Dual

Post by acase »

Here's another possible Blathy cook after white's 28th move, it looks like black wins with 28...Nxd6+!. It looks like white should probably play 28.Kg7! instead.

[pgn][Event "?"]
[Site "?"]
[Date "1890"]
[Round "?"]
[White "Otto Blathy"]
[Black "?"]
[Result "1-0"]
[BlackElo "3525"]
[TimeControl "300+3"]
[SetUp "1"]
[FEN "r1b5/1pKp4/pP1P1p1p/P4p1B/3pn2p/1P1k4/1P6/5N1N w - - 0 1"]
[Termination "normal"]
[PlyCount "235"]
[WhiteType "program"]
[BlackType "program"]

1. Bd1 h5 2. Kd8 Rb8 3. Ke7 Ra8 4. Kf8 Rb8 5. Kg7 Ra8 6. Kg8 Rb8 7. Kf8 Ra8
8. Ke7 Rb8 9. Kd8 Ra8 10. Kc7 f4 11. Kd8 Rb8 12. Ke7 Ra8 13. Kf8 Rb8 14.
Kg7 Ra8 15. Kg8 Rb8 16. Kf8 Ra8 17. Ke7 Rb8 18. Kd8 Ra8 19. Kc7 f5 20. Kd8
Rb8 21. Ke7 Ra8 22. Kf8 Rb8 23. Kg7 Ra8 24. Kh6 Rb8 25. Kg6 Ra8 26. Kg7 Rb8
27. Kf8 Ra8 28. Ke8 Rb8 (28. .. Nxd6+ {+12.95/31 173 Crystal 5 KWK avx2}
29. Ke7 Ne4 30. Kd8 h3 31. Kc7 d6 32. b4 h4 33. Bh5 Kc2 34. Nh2 d3 35. Nf3
d5 36. Nxh4 d2 37. Ng6 h2 38. Nxf4 d4 39. Ng6 Be6 40. Nf4 Rh8 41. Bf3 Rh7+
42. Kb8 Bc4 43. Ka7 d1=Q 44. Bxd1+ Kxd1 45. Ng2 Kc2 46. Ne1+ Kd2 47. Ng2
Nd6 48. Ng3 h1=Q 49. Nxh1 Rh3) 29. Kd8 Ra8 30. Kc7 f3 31. Kd8 Rb8 32. Ke7
Ra8 33. Kf8 Rb8 34. Kg7 Ra8 35. Kh6 Rb8 36. Kg6 Ra8 37. Kg7 Rb8 38. Kf8 Ra8
39. Ke7 Rb8 40. Kd8 Ra8 41. Kc7 f2 42. Kd8 Rb8 43. Ke7 Ra8 44. Kf8 Rb8 45.
Kg7 Ra8 46. Kg6 Rb8 47. Kh6 Ra8 48. Kg7 Rb8 49. Kf8 Ra8 50. Ke7 Rb8 51. Kd8
Ra8 52. Kc7 f4 53. Kd8 Rb8 54. Ke7 Ra8 55. Kf8 Rb8 56. Kg7 Ra8 57. Kh6 Rb8
58. Kg6 Ra8 59. Kg7 Rb8 60. Kf8 Ra8 61. Ke7 Rb8 62. Kd8 Ra8 63. Kc7 f3 64.
Kd8 Rb8 65. Ke7 Ra8 66. Kf8 Rb8 67. Kg7 Ra8 68. Kh6 Rb8 69. Kg6 Ra8 70. Kg7
Rb8 71. Kf8 Ra8 72. Ke7 Rb8 73. Kd8 Ra8 74. Kc7 h3 75. Kd8 Rb8 76. Ke7 Ra8
77. Kf8 Rb8 78. Kg7 Ra8 79. Kh6 Rb8 80. Kg6 Ra8 81. Kg7 Rb8 82. Kf8 Ra8 83.
Ke7 Rb8 84. Kd8 Ra8 85. Kc7 h2 86. Kd8 Rb8 87. Ke7 Ra8 88. Kf8 Rb8 89. Kg7
Ra8 90. Kh6 Rb8 91. Kg6 Ra8 92. Kg7 Rb8 93. Kf8 Ra8 94. Ke7 Rb8 95. Kd8 Ra8
96. Kc7 h4 97. Kd8 Rb8 98. Ke7 Ra8 99. Kf8 Rb8 100. Kg7 Ra8 101. Kh6 Rb8
102. Kg6 Ra8 103. Kg7 Rb8 104. Kf8 Ra8 105. Ke7 Rb8 106. Kd8 Ra8 107. Kc7
h3 108. Kd8 Rb8 109. Ke7 Ra8 110. Kf8 Rb8 111. Kg7 Ra8 112. Kh6 Rb8 113.
Kg6 Ra8 114. Kg7 Rb8 115. Kf8 Ra8 116. Ke7 Rb8 117. Kd8 Ra8 118. Kc7 1-0[/pgn]
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acase
Posts: 1004
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Re: Another Otto Blathy Cook/Dual

Post by acase »

Here's another one cook/dual from the root position with a forced mate in 27:

[pgn][Event "?"]
[Site "?"]
[Date "1890"]
[Round "?"]
[White "Otto Blathy"]
[Black "?"]
[Result "1-0"]
[TimeControl "300+3"]
[SetUp "1"]
[FEN "8/1p2p1p1/1P2p3/k1P5/P1p3p1/K1P1p1P1/p1P1P1P1/Nb6 w - - 0 1"]
[Termination "normal"]
[PlyCount "219"]
[WhiteType "program"]
[BlackType "program"]

1. Kb2 (1. c6 {+M27/46 53 Cook/Dual Crystal 5 KWK avx2} Kxb6 2. cxb7 Kxb7
3. Kb4 Kb6 4. Kxc4 Ka5 5. Kb3 Ka6 6. Kb4 Kb6 7. a5+ Kc6 8. Kc4 g6 9. Kb4 g5
10. c4 e5 11. c5 Kd5 12. a6 Kc6 13. Kc4 e4 14. Kb4 e6 15. Kc4 e5 16. Kb4
Bxc2 17. Nxc2 a1=R 18. Nxa1 Kc7 19. Kb5 Kc8 20. Kb6 Kb8 21. c6 Kc8 22. a7
Kd8 23. c7+ Ke7 24. c8=Q Kf7 25. Qf5+ Ke7 26. a8=Q Kd6 27. Qd8#) 1. .. Ka6
2. Kc1 Ka5 3. Kd1 Ka6 4. Ke1 Ka5 5. Kf1 Ka6 6. Kg1 Ka5 7. Kh2 Ka6 8. Kh1
Ka5 9. Kg1 Ka6 10. Kf1 Ka5 11. Ke1 Ka6 12. Kd1 Ka5 13. Kc1 Ka6 14. Kb2 Ka5
15. Ka3 e5 16. Kb2 Ka6 17. Kc1 Ka5 18. Kd1 Ka6 19. Ke1 Ka5 20. Kf1 Ka6 21.
Kg1 Ka5 22. Kh2 Ka6 23. Kh1 Ka5 24. Kg1 Ka6 25. Kf1 Ka5 26. Ke1 Ka6 27. Kd1
Ka5 28. Kc1 Ka6 29. Kb2 Ka5 30. Ka3 e4 31. Kb2 Ka6 32. Kc1 Ka5 33. Kd1 Ka6
34. Ke1 Ka5 35. Kf1 Ka6 36. Kg1 Ka5 37. Kh2 Ka6 38. Kh1 Ka5 39. Kg1 Ka6 40.
Kf1 Ka5 41. Ke1 Ka6 42. Kd1 Ka5 43. Kc1 Ka6 44. Kb2 Ka5 45. Ka3 e6 46. Kb2
Ka6 47. Kc1 Ka5 48. Kd1 Ka6 49. Ke1 Ka5 50. Kf1 Ka6 51. Kg1 Ka5 52. Kh2 Ka6
53. Kh1 Ka5 54. Kg1 Ka6 55. Kf1 Ka5 56. Ke1 Ka6 57. Kd1 Ka5 58. Kc1 Ka6 59.
Kb2 Ka5 60. Ka3 e5 61. Kb2 Ka6 62. Kc1 Ka5 63. Kd1 Ka6 64. Ke1 Ka5 65. Kf1
Ka6 66. Kg1 Ka5 67. Kh2 Ka6 68. Kh1 Ka5 69. Kg1 Ka6 70. Kf1 Ka5 71. Ke1 Ka6
72. Kd1 Ka5 73. Kc1 Ka6 74. Kb2 Ka5 75. Ka3 g6 76. Kb2 Ka6 77. Kc1 Ka5 78.
Kd1 Ka6 79. Ke1 Ka5 80. Kf1 Ka6 81. Kg1 Ka5 82. Kh2 Ka6 83. Kh1 Ka5 84. Kg1
Ka6 85. Kf1 Ka5 86. Ke1 Ka6 87. Kd1 Ka5 88. Kc1 Ka6 89. Kb2 Ka5 90. Ka3 g5
91. Kb2 Ka6 92. Kc1 Ka5 93. Kd1 Ka6 94. Ke1 Ka5 95. Kf1 Ka6 96. Kg1 Ka5 97.
Kh2 Ka6 (97. .. Kxa4 98. c6 Ka3 99. cxb7 Kb2 100. b8=Q Kxa1 101. Qa7 Bxc2
102. b7 Kb2 103. b8=Q+) (97. .. Bxc2 98. Nxc2 Kxa4 99. c6 Kb3 (99. .. bxc6
100. b7 Kb3 101. Nxe3 a1=Q 102. b8=Q+ Ka2 103. Qa8+ Kb2 104. Qxa1+ Kxa1
105. Nxc4) 100. Na1+ Kb2 101. cxb7 Kxa1 102. b8=Q Kb2 103. Qa8 a1=Q 104.
Qxa1+ Kxa1 105. b7 Kb2 106. b8=Q+ Kxc3 107. Qb5) 98. Kh1 Ka5 99. Kg1 Ka6
(99. .. Bxc2 100. c6 Kxb6 101. cxb7 Kxb7 102. Nxc2 Kb6 103. Kf1 Ka5 104.
Ke1 Kxa4 105. Kd1 Kb3 106. Kc1 a1=Q+ 107. Nxa1+ Kxc3 108. Nc2 Kb3 109.
Nxe3) 100. Kf1 Ka5 101. Ke1 Ka6 102. Kd1 Ka5 103. Kc1 Ka6 104. Kb2 Ka5 105.
Ka3 Ka6 106. Kb4 Bxc2 107. c6 Bxa4 108. cxb7 Kxb7 109. Kxa4 Kxb6 110. Kb4
1-0[/pgn]
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acase
Posts: 1004
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Re: Another Otto Blathy Cook/Dual

Post by acase »

This one is possibly cooked also, Crystal seems to think black wins after 9.f3!

[pgn][Event "?"]
[Site "?"]
[Date "1890"]
[Round "?"]
[White "Otto Blathy"]
[Black "?"]
[Result "1-0"]
[TimeControl "300+3"]
[SetUp "1"]
[FEN "nK1B2Nq/1p4pP/rr3pPp/k1pN1p2/2Bp4/3P4/1np5/7R w - - 0 1"]
[Termination "normal"]
[PlyCount "235"]
[WhiteType "program"]
[BlackType "program"]

1. Ra1+ Na4 2. Kc8 Ra7 3. Kd7 Ra6 4. Ke7 Ra7 5. Ke8 Ra6 6. Kd7 Ra7 7. Kc8
Ra6 8. Kb8 f4 9. Kc8 Ra7 (9. .. f3 {+10.06/44 23000 Crystal 5 KWK avx2} 10.
Kd7 f2 11. Bb3 f1=Q 12. Rxf1 Nb2 13. Bxc2 c4 14. dxc4 Nxc4 15. Rb1 d3 16.
Bd1 Ne5+ 17. Kc8 Nxg6 18. Nc3 Nc7 19. Bxc7 Ra8+ 20. Kd7 Ne5+ 21. Ke7 Nc4
22. Ra1+ Kb4 23. Nd5+ Kc5 24. Rxa8 Rc6 25. Kd7 Qxh7 26. Nge7 g5 27. Bh5
Ne5+ 28. Kc8 Re6 29. Ra5+ b5 30. Ra7 Qh8+ 31. Kb7 Nc4 32. Ra8 Qh7 33. Bg6
Qg7 34. Bxd3 Rxe7 35. Nxe7 Qxe7 36. Ra6 g4 37. Kc8 b4 38. Bxc4 Kxc4 39.
Rc6+ Kd5 40. Ra6 Qf8+ 41. Bd8 g3 42. Ra1 g2 43. Rd1+ Ke4 44. Kb8 g1=Q) 10.
Kd7 Ra6 11. Ke7 Ra7 12. Ke8 Ra6 13. Kd7 Ra7 14. Kc8 Ra6 15. Kb8 f3 16. Kc8
Ra7 17. Kd7 Ra6 18. Ke8 Ra7 19. Ke7 Ra6 20. Kd7 Ra7 21. Kc8 Ra6 22. Kb8 f2
23. Kc8 Ra7 24. Kd7 Ra6 25. Ke8 Ra7 26. Ke7 Ra6 27. Kd7 Ra7 28. Kc8 Ra6 29.
Kb8 f5 30. Kc8 Ra7 31. Kd7 Ra6 32. Ke8 Ra7 33. Ke7 Ra6 34. Kd7 Ra7 35. Kc8
Ra6 36. Kb8 f4 37. Kc8 Ra7 38. Kd7 Ra6 39. Ke8 Ra7 40. Ke7 Ra6 41. Kd7 Ra7
42. Kc8 Ra6 43. Kb8 f3 44. Kc8 Ra7 45. Kd7 Ra6 46. Ke8 Ra7 47. Ke7 Ra6 48.
Kd7 Ra7 49. Kc8 Ra6 50. Kb8 h5 51. Kc8 Ra7 52. Kd7 Ra6 53. Ke8 Ra7 54. Ke7
Ra6 55. Kd7 Ra7 56. Kc8 Ra6 57. Kb8 h4 58. Kc8 Ra7 59. Kd7 Ra6 60. Ke8 Ra7
61. Ke7 Ra6 62. Kd7 Ra7 63. Kc8 Ra6 64. Kb8 h3 65. Kc8 Ra7 66. Kd7 Ra6 67.
Ke8 Ra7 68. Ke7 Ra6 69. Kd7 Ra7 70. Kc8 Ra6 71. Kb8 h2 72. Kc8 Ra7 73. Kd7
Ra6 74. Ke8 Ra7 75. Ke7 Ra6 76. Kd7 Ra7 77. Kc8 Ra6 78. Kb8 f1=Q 79. Rxf1
Nc3 80. Ra1+ Na4 81. Kc8 Ra7 82. Kd7 Ra6 83. Ke8 Ra7 84. Ke7 Ra6 85. Kd7
Ra7 86. Kc8 Ra6 87. Kb8 f2 88. Kc8 Ra7 89. Kd7 Ra6 90. Ke8 Ra7 91. Ke7 Ra6
(91. .. f1=Q 92. Rxf1 Nc7 93. Bxc7 Ra8 94. Kd7 Rxg8 95. Ra1 Rd8+ 96. Bxd8
Qxd8+ 97. Kxd8 Rb1 98. h8=Q c1=Q 99. Kc7) 92. Kd7 Ra7 93. Kc8 Ra6 94. Kb8
f1=Q 95. Rxf1 Nc3 96. Ra1+ Na4 97. Kc8 Ra7 98. Kd7 Ra6 99. Ke8 Ra7 100. Ke7
Ra6 101. Kd7 Ra7 102. Kc8 Ra6 103. Kb8 h1=Q 104. Rxh1 Nc3 105. Ra1+ Na4
106. Kc8 Ra7 107. Kd7 Ra6 108. Ke8 Ra7 109. Ke7 Ra6 110. Kd7 Ra7 111. Kc8
c1=Q (111. .. Ra6 112. Kb8 c1=Q 113. Rxc1 Nc3 114. Ra1+ Na4 115. Bxa6 Kxa6
116. Rxa4+ Kb5 117. Bxb6 Nxb6 (117. .. Kxa4 118. Bxc5 Kb5 119. Bxd4 Kc6
120. Ne7+ Kd7 121. Nf5) 118. Nxb6 Kxb6 119. Ra7) 112. Rxc1 Nc7 113. Bxc7
Ra8+ 114. Kd7 Rxg8 (114. .. Qxg8 115. hxg8=Q Rxg8 116. Nxb6) 115. Nxb6
Nxb6+ (115. .. Ra8 116. Nxa8+ Kb4 117. Bg8) 116. Bxb6+ Kxb6 117. hxg8=Q
Qxg8 118. Bxg8 1-0[/pgn]
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acase
Posts: 1004
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Re: Another Otto Blathy Cook/Dual

Post by acase »

Here's another daul, it's a mate in 14 from the root position. White should play 5.Bg2! instead of the move suggested in the main line.

[pgn][Event "?"]
[Site "?"]
[Date "1890"]
[Round "?"]
[White "Otto Blathy"]
[Black "?"]
[Result "1-0"]
[TimeControl "300+3"]
[SetUp "1"]
[FEN "rbK5/r1p2p1p/k1B2p1p/1pP2p1R/1P6/1b3p2/8/8 w - - 0 1"]
[Termination "normal"]
[PlyCount "321"]
[WhiteType "program"]
[BlackType "program"]

1. Rh1 (1. Rh1 {+M14/27 11 Crystal 5 KWK avx2} Be6+ 2. Kd8 Bb3 3. Ra1+ Ba4
4. Kc8 f2 5. Bg2 Rb7 6. Bxb7+ Ka7 7. Bc6 f1=R 8. Rxf1 f4 9. Ra1 Ka6 10.
Bxa8 Ka7 11. Bc6 f3 12. Bxb5 Ka8 13. Bc6+ Ka7 14. Rxa4#) 1. .. Be6+ 2. Kd8
Bb3 3. Ra1+ Ba4 4. Kc8 f2 5. Rf1 Bb3 6. Rc1 Be6+ 7. Kd8 Bb3 8. Ra1+ Ba4 9.
Kc8 h5 10. Rf1 Bb3 11. Rc1 Be6+ 12. Kd8 Bb3 13. Ra1+ Ba4 14. Kc8 h4 15. Rf1
Bb3 16. Rc1 Be6+ 17. Kd8 Bb3 18. Ra1+ Ba4 19. Kc8 h3 20. Rf1 Bb3 21. Rc1
Be6+ 22. Kd8 Bb3 23. Ra1+ Ba4 24. Kc8 h2 25. Rf1 Bc2 26. Rh1 Bb3 27. Rc1
Be6+ 28. Kd8 Bb3 29. Ra1+ Ba4 30. Kc8 f4 31. Rf1 Bc2 32. Rh1 Bb3 33. Rc1
Be6+ 34. Kd8 Bb3 35. Ra1+ Ba4 36. Kc8 f3 37. Rf1 Bc2 38. Rh1 Bb3 39. Rc1
Be6+ 40. Kd8 Bb3 41. Ra1+ Ba4 42. Kc8 h6 43. Rf1 Bc2 44. Rh1 Bb3 45. Rc1
Be6+ 46. Kd8 Bb3 47. Ra1+ Ba4 48. Kc8 h5 49. Rf1 Bc2 50. Rh1 Bb3 51. Rc1
Be6+ 52. Kd8 Bb3 53. Ra1+ Ba4 54. Kc8 h4 55. Rf1 Bc2 56. Rh1 Bb3 57. Rc1
Be6+ 58. Kd8 Bb3 59. Ra1+ Ba4 60. Kc8 h3 61. Rf1 Bc2 62. Rh1 Bb3 63. Rc1
Be6+ 64. Kd8 Bb3 65. Ra1+ Ba4 66. Kc8 h1=Q 67. Rxh1 Bc2 68. Rf1 Bb3 69. Rc1
Be6+ 70. Kd8 Bb3 71. Ra1+ Ba4 72. Kc8 h2 73. Rh1 Bc2 74. Rf1 Bb3 75. Rc1
Be6+ 76. Kd8 Bb3 77. Ra1+ Ba4 78. Kc8 f1=Q 79. Rxf1 Bc2 80. Rh1 Bb3 81. Rc1
Be6+ 82. Kd8 Bb3 83. Ra1+ Ba4 84. Kc8 f2 85. Rh1 Bc2 86. Rf1 Bb3 87. Rc1
Be6+ 88. Kd8 Bb3 89. Ra1+ Ba4 90. Kc8 f5 91. Rh1 Bc2 92. Rf1 Bb3 93. Rc1
Be6+ 94. Kd8 Bb3 95. Ra1+ Ba4 96. Kc8 f4 97. Rh1 Bc2 98. Rf1 Bb3 99. Rc1
Be6+ 100. Kd8 Bb3 101. Ra1+ Ba4 102. Kc8 f3 103. Rh1 Bc2 104. Rf1 Bb3 105.
Rc1 Be6+ 106. Kd8 Bb3 107. Ra1+ Ba4 108. Kc8 f1=Q 109. Rxf1 Bc2 110. Rh1
Bb3 111. Rc1 Be6+ 112. Kd8 Bb3 113. Ra1+ Ba4 114. Kc8 f2 115. Rh1 Bc2 116.
Rf1 Bb3 117. Rc1 Be6+ 118. Kd8 Bb3 119. Ra1+ Ba4 120. Kc8 f6 121. Rh1 Bc2
122. Rf1 Bb3 123. Rc1 Be6+ 124. Kd8 Bb3 125. Ra1+ Ba4 126. Kc8 f5 127. Rh1
Bc2 128. Rf1 Bb3 129. Rc1 Be6+ 130. Kd8 Bb3 131. Ra1+ Ba4 132. Kc8 f4 133.
Rh1 Bc2 134. Rf1 Bb3 135. Rc1 Be6+ 136. Kd8 Bb3 137. Ra1+ Ba4 138. Kc8 f3
139. Rh1 Bc2 140. Rf1 Bb3 141. Rc1 Be6+ 142. Kd8 Bb3 143. Ra1+ Ba4 144. Kc8
f1=Q 145. Rxf1 Bc2 146. Rc1 Ba4 147. Ra1 f2 148. Rh1 Bc2 149. Rf1 Bb3 150.
Rc1 Be6+ 151. Kd8 Bb3 152. Ra1+ Ba4 153. Kc8 Rb7 154. Bxb7+ Ka7 155. Bc6
Ka6 156. Bxa8 Ka7 157. Bc6 f1=Q 158. Rxf1 h1=Q 159. Rxh1 Bb3 160. Ra1+ Ba4
161. Bxb5 1-0[/pgn]
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acase
Posts: 1004
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Re: Another Otto Blathy Cook/Dual

Post by acase »

Looks like this Blathy study is a Dual/Cook also, if white plays 5.Bx4! instead of 5.Bh2 he can force mate in no more than 59 moves from the root position and possibly less.

[pgn][Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "1-0"]
[BlackElo "2400"]
[WhiteElo "2400"]
[TimeControl "300+5"]
[SetUp "1"]
[FEN "Q1b4q/2Pp2p1/3P1k1b/6pP/3p1pPp/3P1pBK/5P2/8 w - - 0 1"]
[Termination "normal"]
[PlyCount "249"]
[WhiteType "program"]
[BlackType "program"]

1. Qe4 Kf7 2. Qe7+ Kg8 3. Qe8+ Kh7 4. Qg6+ Kg8 5. Bh2 (5. Bxh4 gxh4 6. Kxh4
Kf8 7. g5 {+M52/65 1345 Stockfish_23040506_x64_bmi2} Bxg5+ 8. Qxg5 Kg8 9.
Qe7 Qh6 10. Qe8+ Kh7 11. Qxc8 Qf6+ 12. Kg4 Qe6+ 13. Kxf3 Qh3+ 14. Ke4 Qh1+
15. Ke5 Qe1+ 16. Kf5 Qe6+ 17. Kxf4 Qxd6+ 18. Ke4 Qe7+ 19. Kd5 Qe6+ 20. Kxd4
Qf5 21. f3 Qf6+ 22. Kc5 Qc6+ 23. Kb4 Qb6+ 24. Ka4 Qd4+ 25. Ka5 Qxd3 26. Kb6
Qe3+ 27. Kb7 Qxf3+ 28. Ka7 Qxh5 29. Qa6 Qc5+ 30. Qb6 Qc3 31. Qb1+ g6 32.
Kb7 Qf3+ 33. Kb8 Qf4 34. Qe1 Qd6 35. Qe4 Qb6+ 36. Kc8 Kh6 37. Qh4+ Kg7 38.
Qc4 Qf6 39. Kxd7 Qf5+ 40. Qe6 Qb5+ 41. Ke7 Qc5+ 42. Qd6 Qf5 43. Kd8 Qa5 44.
Ke8 Qc3 45. Kd7 Qh3+ 46. Qe6 Qd3+ 47. Ke8 Qb5+ 48. Qd7+ Qxd7+ 49. Kxd7 Kf6
50. c8=Q Kf5 51. Kd6+ Kf4 52. Qh3 Ke4 53. Qg4+ Ke3 54. Kd5 g5
55. Kc4 Kd2 56. Qf3 g4 57. Qf2+ Kd1 58. Kc3 g3 59. Qd2#) 5. .. Kf8 6. Qf5+
Kg8 7. Qd5+ Kf8 8. Qe5 Kf7 9. Qe7+ Kg8 10. Qe8+ Kh7 11. Qg6+ Kg8 12. Bg1
Kf8 13. Qf5+ Kg8 14. Qd5+ Kf8 15. Qe5 Kf7 16. Qe7+ Kg8 17. Qe8+ Kh7 18.
Qg6+ Kg8 19. Kh2 Kf8 20. Qf5+ Kg8 21. Qd5+ Kf8 22. Qe5 Kf7 23. Qe7+ Kg8 24.
Qe8+ Kh7 25. Qg6+ Kg8 26. Kh1 Kf8 27. Qf5+ Kg8 28. Qd5+ Kf8 29. Qe5 Kf7 30.
Qe7+ Kg8 31. Qe8+ Kh7 32. Qg6+ Kg8 33. Bh2 Kf8 34. Qf5+ Kg8 35. Qd5+ Kf8
36. Qe5 Kf7 37. Qe7+ Kg8 38. Qe8+ Kh7 39. Qg6+ Kg8 40. Kg1 Kf8 41. Qf5+ Kg8
42. Qd5+ Kf8 43. Qe5 Kf7 44. Qe7+ Kg8 45. Qe8+ Kh7 46. Qg6+ Kg8 47. Kf1 Kf8
48. Qf5+ Kg8 49. Qd5+ Kf8 50. Qe5 Kf7 51. Qe7+ {50 moves rule} Kg8 {50
moves rule} 52. Qe8+ {50 moves rule} Kh7 {50 moves rule} 53. Qg6+ {50 moves
rule} Kg8 {50 moves rule} 54. Ke1 {50 moves rule} Kf8 {50 moves rule} 55.
Qf5+ {50 moves rule} Kg8 {50 moves rule} 56. Qd5+ {50 moves rule} Kf8 {50
moves rule} 57. Qe5 {50 moves rule} Kf7 {50 moves rule} 58. Qe7+ {50 moves
rule} Kg8 {50 moves rule} 59. Qe8+ {50 moves rule} Kh7 {50 moves rule} 60.
Qg6+ {50 moves rule} Kg8 {50 moves rule} 61. Kd2 {50 moves rule} Kf8 {50
moves rule} 62. Qf5+ {50 moves rule} Kg8 {50 moves rule} 63. Qd5+ {50 moves
rule} Kf8 {50 moves rule} 64. Qe5 {50 moves rule} Kf7 {50 moves rule} 65.
Qe7+ {50 moves rule} Kg8 {50 moves rule} 66. Qe8+ {50 moves rule} Kh7 {50
moves rule} 67. Qg6+ {50 moves rule} Kg8 {50 moves rule} 68. Kc2 {50 moves
rule} Kf8 {50 moves rule} 69. Qf5+ {50 moves rule} Kg8 {50 moves rule} 70.
Qd5+ {50 moves rule} Kf8 {50 moves rule} 71. Qe5 {50 moves rule} Kf7 {50
moves rule} 72. Qe7+ {50 moves rule} Kg8 {50 moves rule} 73. Qe8+ {50 moves
rule} Kh7 {50 moves rule} 74. Qg6+ {50 moves rule} Kg8 {50 moves rule} 75.
Kb2 {50 moves rule} (75. Kb3 {0 50 moves rule} Kf8 {50 moves rule} 76. Qf5+
{50 moves rule} Kg8 {50 moves rule} 77. Qd5+ {50 moves rule} Kf8 {50 moves
rule} 78. Qe5 {50 moves rule} Qg8+ {$1 [%c_effect
g8;square;g8;type;GreatFind;persistent;true] 50 moves rule}) 75. .. Kf8 {50
moves rule} 76. Qf5+ {50 moves rule} Kg8 {50 moves rule} 77. Qd5+ {50 moves
rule} Kf8 {50 moves rule} 78. Qe5 {50 moves rule} Kf7 {50 moves rule} 79.
Qe7+ {50 moves rule} Kg8 {50 moves rule} 80. Qe8+ {50 moves rule} Kh7 {50
moves rule} 81. Qg6+ {50 moves rule} Kg8 {50 moves rule} 82. Ka3 {50 moves
rule} Kf8 {50 moves rule} 83. Qf5+ {50 moves rule} Kg8 {50 moves rule} 84.
Qd5+ {50 moves rule} Kf8 {50 moves rule} 85. Qe5 {50 moves rule} Kf7 {50
moves rule} 86. Qe7+ {50 moves rule} Kg8 {50 moves rule} 87. Qe8+ {50 moves
rule} Kh7 {50 moves rule} 88. Qg6+ {50 moves rule} Kg8 {50 moves rule} 89.
Ka4 {50 moves rule} Kf8 {50 moves rule} 90. Qf5+ {50 moves rule} Kg8 {50
moves rule} 91. Qd5+ {50 moves rule} Kf8 {50 moves rule} 92. Qe5 {50 moves
rule} Kf7 {50 moves rule} 93. Qe7+ {50 moves rule} Kg8 {50 moves rule} 94.
Qe8+ {50 moves rule} Kh7 {50 moves rule} 95. Qg6+ {50 moves rule} Kg8 {50
moves rule} 96. Ka5 {50 moves rule} Kf8 {50 moves rule} 97. Qf5+ {50 moves
rule} Kg8 {50 moves rule} 98. Qd5+ {50 moves rule} Kf8 {50 moves rule} 99.
Qe5 {50 moves rule} Kf7 {50 moves rule} 100. Qe7+ {50 moves rule} Kg8 {50
moves rule} 101. Qe8+ {50 moves rule} Kh7 {50 moves rule} 102. Qg6+ {50
moves rule} Kg8 {50 moves rule} 103. Kb6 {50 moves rule} Kf8 {50 moves
rule} 104. Qf5+ {50 moves rule} Kg8 {50 moves rule} 105. Qd5+ {50 moves
rule} Kf8 {50 moves rule} 106. Qe5 {50 moves rule} Kf7 {50 moves rule} 107.
Qe7+ {50 moves rule} Kg8 {50 moves rule} 108. Qe8+ {50 moves rule} Kh7 {50
moves rule} 109. Qg6+ {50 moves rule} Kg8 {50 moves rule} 110. Ka7 {50
moves rule} Kf8 {50 moves rule} 111. Qf5+ {50 moves rule} Kg8 {50 moves
rule} 112. Qd5+ {50 moves rule} Kf8 {50 moves rule} 113. Qe5 {50 moves
rule} Kf7 {50 moves rule} 114. Qe7+ {50 moves rule} Kg8 {50 moves rule}
115. Qe8+ {50 moves rule} Kh7 {50 moves rule} 116. Qg6+ {50 moves rule} Kg8
{50 moves rule} 117. Kb8 {50 moves rule} Kf8 {50 moves rule} 118. Kxc8 {50
moves rule} Qg8 119. Kxd7 Qf7+ 120. Qxf7+ Kxf7 121. c8=Q g6 122. Qe8+ Kg7
123. hxg6 h3 124. Qf7+ Kh8 125. Qh7# 1-0[/pgn]
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User avatar
Eelco de Groot
Posts: 4722
Joined: Sun Mar 12, 2006 2:40 am
Full name:   Eelco de Groot

Re: Another Otto Blathy Cook/Dual

Post by Eelco de Groot »

acase wrote: ↑Wed Apr 12, 2023 11:36 am This one is possibly cooked also, Crystal seems to think black wins after 9.f3!

[pgn][Event "?"]
[Site "?"]
[Date "1890"]
[Round "?"]
[White "Otto Blathy"]
[Black "?"]
[Result "1-0"]
[TimeControl "300+3"]
[SetUp "1"]
[FEN "nK1B2Nq/1p4pP/rr3pPp/k1pN1p2/2Bp4/3P4/1np5/7R w - - 0 1"]
[Termination "normal"]
[PlyCount "235"]
[WhiteType "program"]
[BlackType "program"]

1. Ra1+ Na4 2. Kc8 Ra7 3. Kd7 Ra6 4. Ke7 Ra7 5. Ke8 Ra6 6. Kd7 Ra7 7. Kc8
Ra6 8. Kb8 f4 9. Kc8 Ra7 (9. .. f3 {+10.06/44 23000 Crystal 5 KWK avx2} 10.
Kd7 f2 11. Bb3 f1=Q 12. Rxf1 Nb2 13. Bxc2 c4 14. dxc4 Nxc4 15. Rb1 d3 16.
Bd1 Ne5+ 17. Kc8 Nxg6 18. Nc3 Nc7 19. Bxc7 Ra8+ 20. Kd7 Ne5+ 21. Ke7 Nc4
22. Ra1+ Kb4 23. Nd5+ Kc5 24. Rxa8 Rc6 25. Kd7 Qxh7 26. Nge7 g5 27. Bh5
Ne5+ 28. Kc8 Re6 29. Ra5+ b5 30. Ra7 Qh8+ 31. Kb7 Nc4 32. Ra8 Qh7 33. Bg6
Qg7 34. Bxd3 Rxe7 35. Nxe7 Qxe7 36. Ra6 g4 37. Kc8 b4 38. Bxc4 Kxc4 39.
Rc6+ Kd5 40. Ra6 Qf8+ 41. Bd8 g3 42. Ra1 g2 43. Rd1+ Ke4 44. Kb8 g1=Q) 10.
Kd7 Ra6 11. Ke7 Ra7 12. Ke8 Ra6 13. Kd7 Ra7 14. Kc8 Ra6 15. Kb8 f3 16. Kc8
Ra7 17. Kd7 Ra6 18. Ke8 Ra7 19. Ke7 Ra6 20. Kd7 Ra7 21. Kc8 Ra6 22. Kb8 f2
23. Kc8 Ra7 24. Kd7 Ra6 25. Ke8 Ra7 26. Ke7 Ra6 27. Kd7 Ra7 28. Kc8 Ra6 29.
Kb8 f5 30. Kc8 Ra7 31. Kd7 Ra6 32. Ke8 Ra7 33. Ke7 Ra6 34. Kd7 Ra7 35. Kc8
Ra6 36. Kb8 f4 37. Kc8 Ra7 38. Kd7 Ra6 39. Ke8 Ra7 40. Ke7 Ra6 41. Kd7 Ra7
42. Kc8 Ra6 43. Kb8 f3 44. Kc8 Ra7 45. Kd7 Ra6 46. Ke8 Ra7 47. Ke7 Ra6 48.
Kd7 Ra7 49. Kc8 Ra6 50. Kb8 h5 51. Kc8 Ra7 52. Kd7 Ra6 53. Ke8 Ra7 54. Ke7
Ra6 55. Kd7 Ra7 56. Kc8 Ra6 57. Kb8 h4 58. Kc8 Ra7 59. Kd7 Ra6 60. Ke8 Ra7
61. Ke7 Ra6 62. Kd7 Ra7 63. Kc8 Ra6 64. Kb8 h3 65. Kc8 Ra7 66. Kd7 Ra6 67.
Ke8 Ra7 68. Ke7 Ra6 69. Kd7 Ra7 70. Kc8 Ra6 71. Kb8 h2 72. Kc8 Ra7 73. Kd7
Ra6 74. Ke8 Ra7 75. Ke7 Ra6 76. Kd7 Ra7 77. Kc8 Ra6 78. Kb8 f1=Q 79. Rxf1
Nc3 80. Ra1+ Na4 81. Kc8 Ra7 82. Kd7 Ra6 83. Ke8 Ra7 84. Ke7 Ra6 85. Kd7
Ra7 86. Kc8 Ra6 87. Kb8 f2 88. Kc8 Ra7 89. Kd7 Ra6 90. Ke8 Ra7 91. Ke7 Ra6
(91. .. f1=Q 92. Rxf1 Nc7 93. Bxc7 Ra8 94. Kd7 Rxg8 95. Ra1 Rd8+ 96. Bxd8
Qxd8+ 97. Kxd8 Rb1 98. h8=Q c1=Q 99. Kc7) 92. Kd7 Ra7 93. Kc8 Ra6 94. Kb8
f1=Q 95. Rxf1 Nc3 96. Ra1+ Na4 97. Kc8 Ra7 98. Kd7 Ra6 99. Ke8 Ra7 100. Ke7
Ra6 101. Kd7 Ra7 102. Kc8 Ra6 103. Kb8 h1=Q 104. Rxh1 Nc3 105. Ra1+ Na4
106. Kc8 Ra7 107. Kd7 Ra6 108. Ke8 Ra7 109. Ke7 Ra6 110. Kd7 Ra7 111. Kc8
c1=Q (111. .. Ra6 112. Kb8 c1=Q 113. Rxc1 Nc3 114. Ra1+ Na4 115. Bxa6 Kxa6
116. Rxa4+ Kb5 117. Bxb6 Nxb6 (117. .. Kxa4 118. Bxc5 Kb5 119. Bxd4 Kc6
120. Ne7+ Kd7 121. Nf5) 118. Nxb6 Kxb6 119. Ra7) 112. Rxc1 Nc7 113. Bxc7
Ra8+ 114. Kd7 Rxg8 (114. .. Qxg8 115. hxg8=Q Rxg8 116. Nxb6) 115. Nxb6
Nxb6+ (115. .. Ra8 116. Nxa8+ Kb4 117. Bg8) 116. Bxb6+ Kxb6 117. hxg8=Q
Qxg8 118. Bxg8 1-0[/pgn]
Crystal thinks it can possibly repair (conserve a win with White) a little earlier by playing 7.Rc1 and after 7...Nb2 not go for a repetition but opening the position with Rook takes c2

Now Crystal gives with Multi PV X10:


[fen]n2B2Nq/rp1K2pP/1r3pPp/k1pN1p2/2Bp4/3P4/1nR5/8 b - -[/fen]


n2B2Nq/rp1K2pP/1r3pPp/k1pN1p2/2Bp4/3P4/1nR5/8 b - -

Engine: Crystal 5 KWK NNUE II (512 MB)
gemaakt door the Stockfish developers (see AUTHORS f

34 29:45 +2.85 8...Pxc4 9.dxc4 Ka4 10.Ta2+ Kb3
11.Txa7 Ta6 12.Txa6 bxa6 13.Pxh6 a5
14.Pf7 Df8 15.Pf4 a4 16.Pe6 Pb6+
17.Lxb6 Da8 18.h8D Dxh8 19.Pxh8 a3
20.Pxd4+ cxd4 21.Lxd4 f4 {[fen]7N/3K2p1/5pP1/8/2PB1p2/pk6/8/8 w - -[/fen] White wins in this position with ease} (1.493.041.903) 836

34 29:45 +4.18 8...Ka4 9.Lxb6 Pxb6+ 10.Pxb6+ Ka3
11.Pe7 f4 12.Pec8 Pxc4 13.Pxc4+ Kb3
14.Te2 Ta8 15.P4d6 f3 16.Te8 Dxe8+
17.Kxe8 f2 18.h8D f1D 19.Dxg7 De2+
20.Kd8 Ta1 21.Df7+ Kb2 (1.493.041.903) 836

34 29:45 +8.87 8...Pa4 9.Pge7 Dxd8+ 10.Kxd8 Td6+
11.Ke8 P8b6 12.Pxb6 Pxb6 13.Kf7 Ta8
14.Ta2+ Pa4 15.Kxg7 Td7 16.Kxf6 Th8
17.g7 Tdd8 18.g8D Tdxg8 19.hxg8D Txg8
20.Lxg8 b5 21.Pc6+ Kb6 (1.493.041.903) 836

34 29:45 +17.77 8...Pc7 9.Lxc7 Pxc4 10.Ta2+ Pa3
11.Txa3+ Kb5 12.Txa7 Ta6 13.Txb7+ Ka4
14.Tb8 Ka3 15.Pge7 Ta8 16.Txh8 Txh8
17.Ke6 f4 18.Pxf4 c4 19.dxc4 h5
20.Kf7 h4 21.Kxg7 h3 (1.493.041.903) 836

34 29:45 +M10 8...Dxg8 9.hxg8D Ka4 10.Lxb6 Pxc4
11.Txc4+ Ka3 12.Lxc5+ Kb3 13.Lxa7 b5
14.Db8 Pc7 15.Txc7 b4 16.Dxb4+ Ka2
17.Lxd4 f4 18.Db2+ (1.493.041.903) 836

34 29:45 +M2 8...Dxh7 9.Txb2 Dxg8 10.Ta2+ (1.493.041.903) 836

34 29:45 +M2 8...f4 9.Txb2 Ka4 10.Ta2+ (1.493.041.903) 836

34 29:45 +M2 8...Taa6 9.Txb2 f4 10.Ta2+ (1.493.041.903) 836

34 29:45 +M2 8...h5 9.Txb2 f4 10.Ta2+ (1.493.041.903) 836

34 29:45 +M1 8...Pd1 9.Ta2+ (1.493.041.903) 836
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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acase
Posts: 1004
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Re: Another Otto Blathy Cook/Dual

Post by acase »

Eelco de Groot wrote: ↑Fri Apr 14, 2023 3:25 am
acase wrote: ↑Wed Apr 12, 2023 11:36 am This one is possibly cooked also, Crystal seems to think black wins after 9.f3!

[pgn][Event "?"]
[Site "?"]
[Date "1890"]
[Round "?"]
[White "Otto Blathy"]
[Black "?"]
[Result "1-0"]
[TimeControl "300+3"]
[SetUp "1"]
[FEN "nK1B2Nq/1p4pP/rr3pPp/k1pN1p2/2Bp4/3P4/1np5/7R w - - 0 1"]
[Termination "normal"]
[PlyCount "235"]
[WhiteType "program"]
[BlackType "program"]

1. Ra1+ Na4 2. Kc8 Ra7 3. Kd7 Ra6 4. Ke7 Ra7 5. Ke8 Ra6 6. Kd7 Ra7 7. Kc8
Ra6 8. Kb8 f4 9. Kc8 Ra7 (9. .. f3 {+10.06/44 23000 Crystal 5 KWK avx2} 10.
Kd7 f2 11. Bb3 f1=Q 12. Rxf1 Nb2 13. Bxc2 c4 14. dxc4 Nxc4 15. Rb1 d3 16.
Bd1 Ne5+ 17. Kc8 Nxg6 18. Nc3 Nc7 19. Bxc7 Ra8+ 20. Kd7 Ne5+ 21. Ke7 Nc4
22. Ra1+ Kb4 23. Nd5+ Kc5 24. Rxa8 Rc6 25. Kd7 Qxh7 26. Nge7 g5 27. Bh5
Ne5+ 28. Kc8 Re6 29. Ra5+ b5 30. Ra7 Qh8+ 31. Kb7 Nc4 32. Ra8 Qh7 33. Bg6
Qg7 34. Bxd3 Rxe7 35. Nxe7 Qxe7 36. Ra6 g4 37. Kc8 b4 38. Bxc4 Kxc4 39.
Rc6+ Kd5 40. Ra6 Qf8+ 41. Bd8 g3 42. Ra1 g2 43. Rd1+ Ke4 44. Kb8 g1=Q) 10.
Kd7 Ra6 11. Ke7 Ra7 12. Ke8 Ra6 13. Kd7 Ra7 14. Kc8 Ra6 15. Kb8 f3 16. Kc8
Ra7 17. Kd7 Ra6 18. Ke8 Ra7 19. Ke7 Ra6 20. Kd7 Ra7 21. Kc8 Ra6 22. Kb8 f2
23. Kc8 Ra7 24. Kd7 Ra6 25. Ke8 Ra7 26. Ke7 Ra6 27. Kd7 Ra7 28. Kc8 Ra6 29.
Kb8 f5 30. Kc8 Ra7 31. Kd7 Ra6 32. Ke8 Ra7 33. Ke7 Ra6 34. Kd7 Ra7 35. Kc8
Ra6 36. Kb8 f4 37. Kc8 Ra7 38. Kd7 Ra6 39. Ke8 Ra7 40. Ke7 Ra6 41. Kd7 Ra7
42. Kc8 Ra6 43. Kb8 f3 44. Kc8 Ra7 45. Kd7 Ra6 46. Ke8 Ra7 47. Ke7 Ra6 48.
Kd7 Ra7 49. Kc8 Ra6 50. Kb8 h5 51. Kc8 Ra7 52. Kd7 Ra6 53. Ke8 Ra7 54. Ke7
Ra6 55. Kd7 Ra7 56. Kc8 Ra6 57. Kb8 h4 58. Kc8 Ra7 59. Kd7 Ra6 60. Ke8 Ra7
61. Ke7 Ra6 62. Kd7 Ra7 63. Kc8 Ra6 64. Kb8 h3 65. Kc8 Ra7 66. Kd7 Ra6 67.
Ke8 Ra7 68. Ke7 Ra6 69. Kd7 Ra7 70. Kc8 Ra6 71. Kb8 h2 72. Kc8 Ra7 73. Kd7
Ra6 74. Ke8 Ra7 75. Ke7 Ra6 76. Kd7 Ra7 77. Kc8 Ra6 78. Kb8 f1=Q 79. Rxf1
Nc3 80. Ra1+ Na4 81. Kc8 Ra7 82. Kd7 Ra6 83. Ke8 Ra7 84. Ke7 Ra6 85. Kd7
Ra7 86. Kc8 Ra6 87. Kb8 f2 88. Kc8 Ra7 89. Kd7 Ra6 90. Ke8 Ra7 91. Ke7 Ra6
(91. .. f1=Q 92. Rxf1 Nc7 93. Bxc7 Ra8 94. Kd7 Rxg8 95. Ra1 Rd8+ 96. Bxd8
Qxd8+ 97. Kxd8 Rb1 98. h8=Q c1=Q 99. Kc7) 92. Kd7 Ra7 93. Kc8 Ra6 94. Kb8
f1=Q 95. Rxf1 Nc3 96. Ra1+ Na4 97. Kc8 Ra7 98. Kd7 Ra6 99. Ke8 Ra7 100. Ke7
Ra6 101. Kd7 Ra7 102. Kc8 Ra6 103. Kb8 h1=Q 104. Rxh1 Nc3 105. Ra1+ Na4
106. Kc8 Ra7 107. Kd7 Ra6 108. Ke8 Ra7 109. Ke7 Ra6 110. Kd7 Ra7 111. Kc8
c1=Q (111. .. Ra6 112. Kb8 c1=Q 113. Rxc1 Nc3 114. Ra1+ Na4 115. Bxa6 Kxa6
116. Rxa4+ Kb5 117. Bxb6 Nxb6 (117. .. Kxa4 118. Bxc5 Kb5 119. Bxd4 Kc6
120. Ne7+ Kd7 121. Nf5) 118. Nxb6 Kxb6 119. Ra7) 112. Rxc1 Nc7 113. Bxc7
Ra8+ 114. Kd7 Rxg8 (114. .. Qxg8 115. hxg8=Q Rxg8 116. Nxb6) 115. Nxb6
Nxb6+ (115. .. Ra8 116. Nxa8+ Kb4 117. Bg8) 116. Bxb6+ Kxb6 117. hxg8=Q
Qxg8 118. Bxg8 1-0[/pgn]
Crystal thinks it can possibly repair (conserve a win with White) a little earlier by playing 7.Rc1 and after 7...Nb2 not go for a repetition but opening the position with Rook takes c2

Now Crystal gives with Multi PV X10:


[fen]n2B2Nq/rp1K2pP/1r3pPp/k1pN1p2/2Bp4/3P4/1nR5/8 b - -[/fen]


n2B2Nq/rp1K2pP/1r3pPp/k1pN1p2/2Bp4/3P4/1nR5/8 b - -

Engine: Crystal 5 KWK NNUE II (512 MB)
gemaakt door the Stockfish developers (see AUTHORS f

34 29:45 +2.85 8...Pxc4 9.dxc4 Ka4 10.Ta2+ Kb3
11.Txa7 Ta6 12.Txa6 bxa6 13.Pxh6 a5
14.Pf7 Df8 15.Pf4 a4 16.Pe6 Pb6+
17.Lxb6 Da8 18.h8D Dxh8 19.Pxh8 a3
20.Pxd4+ cxd4 21.Lxd4 f4 {[fen]7N/3K2p1/5pP1/8/2PB1p2/pk6/8/8 w - -[/fen] White wins in this position with ease} (1.493.041.903) 836

34 29:45 +4.18 8...Ka4 9.Lxb6 Pxb6+ 10.Pxb6+ Ka3
11.Pe7 f4 12.Pec8 Pxc4 13.Pxc4+ Kb3
14.Te2 Ta8 15.P4d6 f3 16.Te8 Dxe8+
17.Kxe8 f2 18.h8D f1D 19.Dxg7 De2+
20.Kd8 Ta1 21.Df7+ Kb2 (1.493.041.903) 836

34 29:45 +8.87 8...Pa4 9.Pge7 Dxd8+ 10.Kxd8 Td6+
11.Ke8 P8b6 12.Pxb6 Pxb6 13.Kf7 Ta8
14.Ta2+ Pa4 15.Kxg7 Td7 16.Kxf6 Th8
17.g7 Tdd8 18.g8D Tdxg8 19.hxg8D Txg8
20.Lxg8 b5 21.Pc6+ Kb6 (1.493.041.903) 836

34 29:45 +17.77 8...Pc7 9.Lxc7 Pxc4 10.Ta2+ Pa3
11.Txa3+ Kb5 12.Txa7 Ta6 13.Txb7+ Ka4
14.Tb8 Ka3 15.Pge7 Ta8 16.Txh8 Txh8
17.Ke6 f4 18.Pxf4 c4 19.dxc4 h5
20.Kf7 h4 21.Kxg7 h3 (1.493.041.903) 836

34 29:45 +M10 8...Dxg8 9.hxg8D Ka4 10.Lxb6 Pxc4
11.Txc4+ Ka3 12.Lxc5+ Kb3 13.Lxa7 b5
14.Db8 Pc7 15.Txc7 b4 16.Dxb4+ Ka2
17.Lxd4 f4 18.Db2+ (1.493.041.903) 836

34 29:45 +M2 8...Dxh7 9.Txb2 Dxg8 10.Ta2+ (1.493.041.903) 836

34 29:45 +M2 8...f4 9.Txb2 Ka4 10.Ta2+ (1.493.041.903) 836

34 29:45 +M2 8...Taa6 9.Txb2 f4 10.Ta2+ (1.493.041.903) 836

34 29:45 +M2 8...h5 9.Txb2 f4 10.Ta2+ (1.493.041.903) 836

34 29:45 +M1 8...Pd1 9.Ta2+ (1.493.041.903) 836
Thanks Eelco,

It looks like you are right here, good thing I said "possibly cooked" :lol:, but it looks like black also can improve on the main line before move 7 with 6...f4 or 6...h5, not enough to win, but an improvement never the less.

On white's 7th move Crystal also seems to like 7.Nge7 on my computer.
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