Complex Puzzle

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Nordlandia
Posts: 2821
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Re: Complex Puzzle

Post by Nordlandia »

EG No. 205 Vol. XXII - July 2016 | Supplement - Page 241/242

Image
8/PNk4K/6n1/6R1/n1r3p1/8/8/8 b - - 0 1

Author claims draw, although black can win according last stockfish dev + lomonosov tablebases. Stockfish assessed black's advanage to -1.10 which is above threshold for winnable TB-7 win. Lomo7 comfirmed that black can win in 93 moves once in seven-piece territory.
[pgn][Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "8/PNk4K/6n1/6R1/n1r3p1/8/8/8 b - - 0 1"]
[PlyCount "195"]

1... Nf8+ 2. Kh8 Nb6 3. Na5 Ra4 4. Nc4 Nc8 5. Rxg4 Nxa7 6. Rg7+ Kd8 7. Nd6 Rh4+
8. Kg8 Nd7 9. Nb7+ Kc8 10. Nc5 Nf6+ 11. Kf7 Nd5 12. Ke6 Nc7+ 13. Kf6 Ncb5 14.
Rg6 Rh1 15. Kf5 Nd4+ 16. Ke4 Nab5 17. Nd3 Ne2 18. Nf4 Nec3+ 19. Kd3 Rd1+ 20.
Kc2 Rf1 21. Ne6 Ne4 22. Kd3 Ned6 23. Rg4 Rf3+ 24. Kd2 Kd7 25. Nd4 Nc4+ 26. Ke2
Re3+ 27. Kf1 Nbd6 28. Kf2 Rc3 29. Rh4 Ne5 30. Rh7+ Ndf7 31. Rh4 Ra3 32. Re4 Ra5
33. Re2 Nd6 34. Kg2 Ndc4 35. Nf3 Ng4 36. Kg3 Nf6 37. Kh4 Rf5 38. Kg3 Nd6 39.
Ne5+ Ke6 40. Nf3+ Nfe4+ 41. Kg4 Kd5 42. Ra2 Rf6 43. Ra5+ Nc5 44. Ng5 Kc6 45.
Kh4 Nd3 46. Kh3 Kb6 47. Ra3 Nf4+ 48. Kh4 Nd5 49. Rf3 Nf5+ 50. Kg4 Kc6 51. Ne4
Nfe3+ 52. Kg3 Re6 53. Nf2 Rg6+ 54. Kh2 Kb5 55. Nd3 Rg8 56. Nf4 Ng4+ 57. Kh3 Ne5
58. Rf2 Rh8+ 59. Kg2 Ne3+ 60. Kg3 Rg8+ 61. Kh3 Kc4 62. Ne6 Re8 63. Ng5 Kd3 64.
Nf7 N5g4 65. Rf4 Rg8 66. Nd6 Ne5 67. Nf5 Rf8 68. Rd4+ Kc3 69. Re4 N3c4 70. Nd4
Kd3 71. Ne6 Rh8+ 72. Rh4 Rg8 73. Rh7 Ne3 74. Rh5 Ke4 75. Ng5+ Kf4 76. Ne6+ Kf3
77. Ng5+ Ke2 78. Ne4 Nd3 79. Ra5 Nf4+ 80. Kh2 Rh8+ 81. Kg3 Nh5+ 82. Kh4 Nf6+
83. Kg5 Nxe4+ 84. Kg6 Rf8 85. Ra6 Nf5 86. Ra1 Rf6+ 87. Kh5 Kf2 88. Rb1 Ne3 89.
Ra1 Re6 90. Ra5 Kg3 91. Ra6 Nf6+ 92. Kg5 Rxa6 93. Kg6 Nfg4+ 94. Kg7 Nf5+ 95.
Kg8 Ngh6+ 96. Kh8 Nf7+ 97. Kg8 Ng5 98. Kf8 Ra8# *

[/pgn]

Code: Select all

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "8/PNk4K/6n1/6R1/n1r3p1/8/8/8 b - - 0 1"]
[PlyCount "195"]

1... Nf8+ 2. Kh8 Nb6 3. Na5 Ra4 4. Nc4 Nc8 5. Rxg4 Nxa7 6. Rg7+ Kd8 7. Nd6 Rh4+
8. Kg8 Nd7 9. Nb7+ Kc8 10. Nc5 Nf6+ 11. Kf7 Nd5 12. Ke6 Nc7+ 13. Kf6 Ncb5 14.
Rg6 Rh1 15. Kf5 Nd4+ 16. Ke4 Nab5 17. Nd3 Ne2 18. Nf4 Nec3+ 19. Kd3 Rd1+ 20.
Kc2 Rf1 21. Ne6 Ne4 22. Kd3 Ned6 23. Rg4 Rf3+ 24. Kd2 Kd7 25. Nd4 Nc4+ 26. Ke2
Re3+ 27. Kf1 Nbd6 28. Kf2 Rc3 29. Rh4 Ne5 30. Rh7+ Ndf7 31. Rh4 Ra3 32. Re4 Ra5
33. Re2 Nd6 34. Kg2 Ndc4 35. Nf3 Ng4 36. Kg3 Nf6 37. Kh4 Rf5 38. Kg3 Nd6 39.
Ne5+ Ke6 40. Nf3+ Nfe4+ 41. Kg4 Kd5 42. Ra2 Rf6 43. Ra5+ Nc5 44. Ng5 Kc6 45.
Kh4 Nd3 46. Kh3 Kb6 47. Ra3 Nf4+ 48. Kh4 Nd5 49. Rf3 Nf5+ 50. Kg4 Kc6 51. Ne4
Nfe3+ 52. Kg3 Re6 53. Nf2 Rg6+ 54. Kh2 Kb5 55. Nd3 Rg8 56. Nf4 Ng4+ 57. Kh3 Ne5
58. Rf2 Rh8+ 59. Kg2 Ne3+ 60. Kg3 Rg8+ 61. Kh3 Kc4 62. Ne6 Re8 63. Ng5 Kd3 64.
Nf7 N5g4 65. Rf4 Rg8 66. Nd6 Ne5 67. Nf5 Rf8 68. Rd4+ Kc3 69. Re4 N3c4 70. Nd4
Kd3 71. Ne6 Rh8+ 72. Rh4 Rg8 73. Rh7 Ne3 74. Rh5 Ke4 75. Ng5+ Kf4 76. Ne6+ Kf3
77. Ng5+ Ke2 78. Ne4 Nd3 79. Ra5 Nf4+ 80. Kh2 Rh8+ 81. Kg3 Nh5+ 82. Kh4 Nf6+
83. Kg5 Nxe4+ 84. Kg6 Rf8 85. Ra6 Nf5 86. Ra1 Rf6+ 87. Kh5 Kf2 88. Rb1 Ne3 89.
Ra1 Re6 90. Ra5 Kg3 91. Ra6 Nf6+ 92. Kg5 Rxa6 93. Kg6 Nfg4+ 94. Kg7 Nf5+ 95.
Kg8 Ngh6+ 96. Kh8 Nf7+ 97. Kg8 Ng5 98. Kf8 Ra8# *
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Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Complex Puzzle

Post by Nordlandia »

Image

Code: Select all

5B1k/7p/6P1/4NnP1/8/8/K4p2/8 w - - 0 0
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Nordlandia
Posts: 2821
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Re: Complex Puzzle

Post by Nordlandia »

Another cook by Lomonosov Tablebases.

[pgn][Event "Suomen Tehtäväniekat"]
[Site "?"]
[Date "2008.04.04"]
[Round "?"]
[White "Perkonoja=P"]
[Black "(=0443.11d1h8)"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "3r2nk/3b4/3P4/8/7p/5B2/3R4/3K4 w - - 0 1"]
[PlyCount "198"]
[EventDate "2008.??.??"]

1. Rd4 h3 2. Rh4+ Kg7 3. Bg4 Ba4+ 4. Kc1 Rxd6 5. Bxh3 Bc6 6. Rg4+ Kf7 7. Rg1
Rd8 8. Bg2 Ba4 9. Bh3 Bb3 10. Bf5 Bd5 11. Kb2 Kf6 12. Bc2 Ne7 13. Rf1+ Ke6 14.
Re1+ Kd6 15. Be4 Rb8+ 16. Kc3 Be6 17. Rd1+ Ke5 18. Re1 Rb3+ 19. Kd2 Rb4 20.
Bg2+ Kd6 21. Rd1 Rh4 22. Kc3+ Ke5 23. Ra1 Rc4+ 24. Kd2 Bf5 25. Rc1 Rd4+ 26. Kc3
Rd3+ 27. Kb4 Rd2 28. Bf3 Ng6 29. Kc5 Nf4 30. Re1+ Kf6 31. Be4 Bg4 32. Kc4 Rd7
33. Kc3 Ne2+ 34. Kc2 Re7 35. Rf1+ Ke5 36. Bd3 Nd4+ 37. Kd2 Be6 38. Re1+ Kd6 39.
Re3 Rc7 40. Bg6 Rc4 41. Re4 Ra4 42. Ke3 Kd5 43. Kf4 Ra1 44. Re5+ Kd6 45. Re4
Nc6 46. Re2 Bd5 47. Rd2 Rf1+ 48. Kg5 Rg1+ 49. Kf6 Re1 50. Bc2 Rf1+ 51. Kg5 Kc5
52. Bd3 Rf8 53. Rc2+ Kd4 54. Bh7 Nd8 55. Rd2+ Ke5 56. Re2+ Kd6 57. Rd2 Ne6+ 58.
Kg4 Rf1 59. Kg3 Rg1+ 60. Kf2 Rg4 61. Bc2 Ng5 62. Ke3 Ke5 63. Rd1 Rg2 64. Bd3
Ne6 65. Rd2 Rg3+ 66. Kf2 Kf4 67. Bf1 Be4 68. Rd6 Bf5 69. Bg2 Rb3 70. Rd2 Rb4
71. Bd5 Nc5 72. Kg2 Nd3 73. Re2 Bc8 74. Bc6 Bg4 75. Ra2 Bh5 76. Kh2 Ne5 77. Bd5
Bd1 78. Rf2+ Ke3 79. Rf5 Rh4+ 80. Kg3 Rg4+ 81. Kh2 Ng6 82. Be6 Re4 83. Bd7 Re7
84. Bc6 Nf4 85. Rf6 Be2 86. Bh1 Rg7 87. Bc6 Bd3 88. Ba8 Rg4 89. Bb7 Kf2 90. Rh6
Bf5 91. Bc6 Ne2 92. Rh3 Ng3 93. Bg2 Be4 94. Rh6 Bxg2 95. Rf6+ Bf3 96. Kh3 Ne2
97. Rh6 Nf4+ 98. Kh2 Rg1 99. Rg6 Rh1# 0-1

[/pgn]

Intended solution:

Code: Select all

[Event "Suomen Tehtäväniekat"]
[Site "?"]
[Date "2008.04.04"]
[Round "?"]
[White "Perkonoja=P"]
[Black "(=0443.11d1h8)"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "3r2nk/3b4/3P4/8/7p/5B2/3R4/3K4 w - - 0 1"]
[PlyCount "23"]
[EventDate "2008.??.??"]

1. Rd4 h3 2. Rh4+ Kg7 3. Bg4 Bxg4+ 4. Rxg4+ Kf8 5. Rf4+ Ke8 6. Re4+ Kf7 7. Rh4
$1 (7. Rf4+ $2 Nf6 8. Rh4 Ng4 9. Rxg4 h2 10. Rh4 (10. Rf4+ Ke6 11. Rf1 Rg8)
10... Ra8 11. d7 Ke7) 7... Rxd6+ 8. Ke2 Rh6 9. Rxh6 Nxh6 10. Kf2 (10. Kf3 $2
Nf5 11. Kf2 Kg6 12. Kg1 Kg5 13. Kh2 Kg4) 10... Nf5 (10... Ng4+ 11. Kg3 h2 12.
Kg2) 11. Kg1 Kg6 12. Kh2 1/2-1/2
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Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Complex Puzzle

Post by Nordlandia »

Doubtful soundness.

Image

[pgn][Event "1/2.p Fizkultura i Sport Shakhmaty v SS"]
[Site "?"]
[Date "1983.??.??"]
[Round "?"]
[White "Bazlov=Y"]
[Black "(=0470.10b5a7)"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "1R6/k7/6b1/1K6/8/1P6/1B2r2b/8 w - - 0 1"]
[PlyCount "27"]
[EventDate "1983.??.??"]

{Shakhmaty v SSSR/1 1984 EG#05532} 1. Rg8 $1 Bd3+ 2. Kb4 Bd6+ $1 (2... Rxb2 3.
Kc3 Bh7 4. Rg7+) 3. Kc3 Bb1 $1 4. Ba1 $1 Ra2 $1 (4... Be5+ 5. Kb4 Bxa1 6. Rg1
Rb2 7. Rh1) 5. Re8 $1 (5. Rg5 $2 Bf4 6. Rd5 Be4 7. Rd7+ Bb7 8. Bb2 Be5+) 5...
Rxa1 6. Re1 $1 (6. Kb2 $2 Bg6 7. Re6 Ra6 8. Rxg6 Be5+) 6... Bf8 7. Rg1 $1 Bd6
8. Re1 $1 Ba2 $1 9. Re4 $1 (9. Rxa1 $2 Be5+) (9. Re6 $2 Ba3) 9... Bf8 10. Rg4
$1 Bb1 11. Rg1 $1 (11. Kb2 $2 Bf5 12. Rg8 Rb1+) 11... Bd6 12. Re1 Bf8 13. Rg1
Ba2 14. Rg4 $1 1/2-1/2

[/pgn]

Code: Select all

[Event "1/2.p Fizkultura i Sport Shakhmaty v SS"]
[Site "?"]
[Date "1983.??.??"]
[Round "?"]
[White "Bazlov=Y"]
[Black "(=0470.10b5a7)"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "1R6/k7/6b1/1K6/8/1P6/1B2r2b/8 w - - 0 1"]
[PlyCount "27"]
[EventDate "1983.??.??"]

{Shakhmaty v SSSR/1 1984 EG#05532} 1. Rg8 $1 Bd3+ 2. Kb4 Bd6+ $1 (2... Rxb2 3.
Kc3 Bh7 4. Rg7+) 3. Kc3 Bb1 $1 4. Ba1 $1 Ra2 $1 (4... Be5+ 5. Kb4 Bxa1 6. Rg1
Rb2 7. Rh1) 5. Re8 $1 (5. Rg5 $2 Bf4 6. Rd5 Be4 7. Rd7+ Bb7 8. Bb2 Be5+) 5...
Rxa1 6. Re1 $1 (6. Kb2 $2 Bg6 7. Re6 Ra6 8. Rxg6 Be5+) 6... Bf8 7. Rg1 $1 Bd6
8. Re1 $1 Ba2 $1 9. Re4 $1 (9. Rxa1 $2 Be5+) (9. Re6 $2 Ba3) 9... Bf8 10. Rg4
$1 Bb1 11. Rg1 $1 (11. Kb2 $2 Bf5 12. Rg8 Rb1+) 11... Bd6 12. Re1 Bf8 13. Rg1
Ba2 14. Rg4 $1 1/2-1/2
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Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Complex Puzzle

Post by Nordlandia »

[d]4K2k/N2p3p/8/2n3pP/3P3R/8/3Bb3/1r6 w - - 0 1

[pgn][Event "Bent JT EG (c)"]
[Site "?"]
[Date "1989.??.??"]
[Round "?"]
[White "Kalinin=A"]
[Black "(+0444.23e8h8)"]
[Result "1-0"]
[SetUp "1"]
[FEN "4K2k/N2p3p/8/2n3pP/3P3R/8/3Bb3/1r6 w - - 0 1"]
[PlyCount "23"]
[EventDate "1989.??.??"]

1. Rh2 Bxh5+ (1... Nb3 2. Rxe2 Rb2 3. Kf7 $1 h6 4. Kg6) (1... Rb8+ 2. Kf7 Ne4
3. Rxe2 d5 4. Nc6 Rb2 5. Rxe4 dxe4 6. Bxg5) 2. Rxh5 Ne4 $1 3. Bxg5 Rb7 $1 4.
Nc8 $1 (4. Bf4 $2 Rxa7 5. Be5+ Kg8 6. Rh4 Ng5 7. Bf6 Ra5) 4... Rb5 5. d5 Rxd5
6. Bc1 $1 Nf6+ $1 (6... Rxh5 7. Bb2+ Kg8 8. Ne7#) 7. Kf8 $1 Rxh5 8. Bh6 $1 Rg5
$1 (8... Rxh6 9. Nd6) 9. Bxg5 Ng4 10. Bh6 $1 Nxh6 11. Nd6 $1 Ng4 12. Nf7# 1-0

[/pgn]

Code: Select all

[Event "Bent JT EG (c)"]
[Site "?"]
[Date "1989.??.??"]
[Round "?"]
[White "Kalinin=A"]
[Black "(+0444.23e8h8)"]
[Result "1-0"]
[SetUp "1"]
[FEN "4K2k/N2p3p/8/2n3pP/3P3R/8/3Bb3/1r6 w - - 0 1"]
[PlyCount "23"]
[EventDate "1989.??.??"]

1. Rh2 Bxh5+ (1... Nb3 2. Rxe2 Rb2 3. Kf7 $1 h6 4. Kg6) (1... Rb8+ 2. Kf7 Ne4
3. Rxe2 d5 4. Nc6 Rb2 5. Rxe4 dxe4 6. Bxg5) 2. Rxh5 Ne4 $1 3. Bxg5 Rb7 $1 4.
Nc8 $1 (4. Bf4 $2 Rxa7 5. Be5+ Kg8 6. Rh4 Ng5 7. Bf6 Ra5) 4... Rb5 5. d5 Rxd5
6. Bc1 $1 Nf6+ $1 (6... Rxh5 7. Bb2+ Kg8 8. Ne7#) 7. Kf8 $1 Rxh5 8. Bh6 $1 Rg5
$1 (8... Rxh6 9. Nd6) 9. Bxg5 Ng4 10. Bh6 $1 Nxh6 11. Nd6 $1 Ng4 12. Nf7# 1-0
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Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Complex Puzzle

Post by Nordlandia »

Cook :arrow:

[pgn][Event "L'Italia Scacchistica#102"]
[Site "?"]
[Date "1947.??.??"]
[Round "?"]
[White "Marysko=M"]
[Black "(=0461.12g2b8)"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "rkNR4/8/6p1/6p1/b4bP1/8/6K1/8 w - - 0 1"]
[PlyCount "8"]
[EventDate "1947.??.??"]

{L'Italia Scacchistica/10} 1. Nb6+ Kc7 2. Rxa8 Bc6+ 3. Nd5+ $1 Bxd5+ 4. Kh3
Bxa8 (4... Kd6 5. Ra6+ Ke5 6. Ra4) 1/2-1/2

[/pgn]

Code: Select all

[Event "L'Italia Scacchistica#102"]
[Site "?"]
[Date "1947.??.??"]
[Round "?"]
[White "Marysko=M"]
[Black "(=0461.12g2b8)"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "rkNR4/8/6p1/6p1/b4bP1/8/6K1/8 w - - 0 1"]
[PlyCount "8"]
[EventDate "1947.??.??"]

{L'Italia Scacchistica/10} 1. Nb6+ Kc7 2. Rxa8 Bc6+ 3. Nd5+ $1 Bxd5+ 4. Kh3
Bxa8 (4... Kd6 5. Ra6+ Ke5 6. Ra4) 1/2-1/2


Lomonosov comfirms black win if remove g6-pawn.

[pgn][Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "R7/2k5/8/3b2p1/5bP1/7K/8/8 b - - 0 1"]
[PlyCount "111"]

1... Kd6 2. Re8 Bb7 3. Re6+ Kd5 4. Re7 Bc6 5. Re6 Kc5 6. Re1 Kd4 7. Rd1+ Ke4 8.
Rb1 Bd5 9. Ra1 Kd3 10. Rd1+ Bd2 11. Rf1 Ke2 12. Rf5 Be4 13. Rf6 Bf3 14. Rb6 Kf2
15. Rb2 Ke3 16. Rb5 Kf4 17. Rf5+ Ke4 18. Rc5 Be2 19. Rc2 Bf1+ 20. Kg3 Be1+ 21.
Kh2 Kf4 22. Rc1 Bg3+ 23. Kg1 Bd3 24. Rd1 Be2 25. Rb1 Kxg4 26. Rb4+ Kh3 27. Rb2
Bf3 28. Rb3 g4 29. Kf1 Be5 30. Re3 Bf4 31. Rd3 Kg3 32. Rc3 Be5 33. Rc4 Bb7 34.
Ra4 Bc6 35. Rb4 Bd5 36. Ke2 Kh3 37. Rb1 g3 38. Rc1 g2 39. Rd1 Be4 40. Ke3 Bf5
41. Re1 Kh2 42. Re2 Kh1 43. Re1+ g1=Q+ 44. Rxg1+ Kxg1 45. Kf3 Kf1 46. Ke3 Ke1
47. Kf3 Kd2 48. Kf2 Bg4 49. Kf1 Ke3 50. Ke1 Bf4 51. Kf1 Kf3 52. Ke1 Kg3 53. Kf1
Bd2 54. Kg1 Bh3 55. Kh1 Bg2+ 56. Kg1 Be3# *

[/pgn]
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Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Complex Puzzle

Post by Nordlandia »

Position to troll your engines :lol:

[pgn][Event "4.hm Shakhmaty v SSSR#39 (c)"]
[Site "?"]
[Date "1969.??.??"]
[Round "?"]
[White "Chuiko=I"]
[Black "(+1855.40h8a8)"]
[Result "1-0"]
[SetUp "1"]
[FEN "kB5K/2P4B/P4rP1/4r3/2N1n3/1RP4N/3b4/6RQ b - - 0 1"]
[PlyCount "130"]
[EventDate "1969.??.??"]

{Shakhmaty v SSSR/8 EG#01258 (c): Shakhmaty v SSSR/3 1970} 1... Rf8+ 2. Kg7
Bh6+ 3. Kxh6 Rh5+ 4. Kxh5 (4. Kg7 $2 Rxh7+ 5. gxh7 Rf7+ 6. Kh6 Rf6+ 7. Kh5 Rf5+
8. Ng5 Rxg5+ 9. Kh4 Rg4+ 10. Kh3 Rg3+ 11. Kh2 Rh3+ 12. Kg2 Rg3+ 13. Kf1 Rf3+
14. Ke2 Re3+ 15. Kd1 Rd3+ 16. Kc1 Rd1+ 17. Kb2 Rd2+ 18. Ka3 Ra2+ 19. Kb4 Ra4+
20. Kb5 Ra5+ 21. Kc6 Rc5+ 22. Kd7 Rd5+ 23. Nd6 Rxd6+ 24. Ke7 Re6+ 25. Kf7 Rf6+
26. Kg7 Rg6+) 4... Rf5+ 5. Ng5 $1 (5. Kh4 $2 Rf4+) (5. Kh6 $2 Rh5+ 6. Kg7 Rxh7+
7. Kf8 Rf7+) 5... Rxg5+ 6. Kh6 $1 (6. Kh4 $2 Rg4+ 7. Kh3 Rg3+ 8. Kh2 Rh3+ 9.
Kg2 Rg3+ 10. Kf1 Rf3+ 11. Ke2 Re3+ 12. Kd1 Rd3+ 13. Kc1 Rd1+ 14. Kb2 Rd2+ 15.
Ka3 Ra2+ 16. Kb4 Ra4+ 17. Kb5 Ra5+ 18. Kc6 Rc5+ 19. Kd7 Rd5+ 20. Ke7 Re5+ 21.
Kf7 Re7+ 22. Kg8 Rg7+ 23. Kh8 Rg8+) 6... Rxg6+ 7. Kh5 (7. Bxg6 $2) 7... Rg5+ 8.
Kh4 Rg4+ 9. Kh3 Rg3+ (9... Rh4+ 10. Kg2 Rg4+ 11. Kf3 Rf4+ 12. Ke3 Rf3+ 13. Kxf3
) 10. Kh2 Rh3+ (10... Rg2+ 11. Kxg2) 11. Kg2 Rg3+ 12. Kf1 Rf3+ 13. Ke2 Re3+ 14.
Kd1 Rd3+ 15. Kc1 Rd1+ (15... Rxc3+ 16. Kd1 Rd3+ 17. Ke2 Re3+ 18. Kf1 Rf3+ 19.
Rxf3) 16. Kb2 Rd2+ 17. Ka3 Ra2+ 18. Kb4 Ra4+ 19. Kb5 Ra5+ 20. Kc6 Rc5+ 21. Kd7
Rd5+ 22. Ke7 (22. Nd6 $2 Rxd6+ 23. Ke7 Re6+ 24. Kf7 Rf6+ 25. Kg7 Rg6+) 22...
Re5+ 23. Kf7 Rf5+ 24. Kg7 Rg5+ 25. Bg6 $1 Rxg6+ 26. Kh7 Rg7+ (26... Rh6+ 27.
Qxh6) 27. Kh6 Rg6+ 28. Kh5 Rg5+ 29. Kh4 Rg4+ 30. Kh3 Rg3+ 31. Kh2 Rh3+ 32. Kg2
Rg3+ 33. Kf1 Rf3+ 34. Ke1 Re3+ 35. Kd1 Rd3+ 36. Kc1 Rd1+ 37. Kb2 Rd2+ 38. Ka3
Ra2+ 39. Kb4 Ra4+ 40. Kb5 Ra5+ 41. Kc6 Rc5+ 42. Kd7 Rd5+ 43. Nd6 $1 Rxd6+ 44.
Ke7 Re6+ 45. Kf7 Rf6+ 46. Kg7 Rg6+ 47. Kh7 $1 Rg7+ 48. Kh6 Rg6+ 49. Kh5 Rg5+
50. Kh4 Rg4+ 51. Kh3 Rg3+ 52. Kh2 Rh3+ 53. Kg2 Rg3+ 54. Kf1 Rf3+ 55. Ke2 Re3+
56. Kd1 Rd3+ 57. Kc1 Rd1+ 58. Kb2 Rd2+ 59. Ka3 Ra2+ 60. Kb4 Ra4+ 61. Kb5 Ra5+
62. Kc4 Rc5+ 63. Kd4 Rc4+ 64. Ke3 Rxc3+ 65. Kf4 Rf3+ 66. Rxf3 1-0

[/pgn]

Code: Select all

kB5K/2P4B/P4rP1/4r3/2N1n3/1RP4N/3b4/6RQ b - - 0 1

Code: Select all

[Event "4.hm Shakhmaty v SSSR#39 (c)"]
[Site "?"]
[Date "1969.??.??"]
[Round "?"]
[White "Chuiko=I"]
[Black "(+1855.40h8a8)"]
[Result "1-0"]
[SetUp "1"]
[FEN "kB5K/2P4B/P4rP1/4r3/2N1n3/1RP4N/3b4/6RQ b - - 0 1"]
[PlyCount "130"]
[EventDate "1969.??.??"]

{Shakhmaty v SSSR/8 EG#01258 (c): Shakhmaty v SSSR/3 1970} 1... Rf8+ 2. Kg7
Bh6+ 3. Kxh6 Rh5+ 4. Kxh5 (4. Kg7 $2 Rxh7+ 5. gxh7 Rf7+ 6. Kh6 Rf6+ 7. Kh5 Rf5+
8. Ng5 Rxg5+ 9. Kh4 Rg4+ 10. Kh3 Rg3+ 11. Kh2 Rh3+ 12. Kg2 Rg3+ 13. Kf1 Rf3+
14. Ke2 Re3+ 15. Kd1 Rd3+ 16. Kc1 Rd1+ 17. Kb2 Rd2+ 18. Ka3 Ra2+ 19. Kb4 Ra4+
20. Kb5 Ra5+ 21. Kc6 Rc5+ 22. Kd7 Rd5+ 23. Nd6 Rxd6+ 24. Ke7 Re6+ 25. Kf7 Rf6+
26. Kg7 Rg6+) 4... Rf5+ 5. Ng5 $1 (5. Kh4 $2 Rf4+) (5. Kh6 $2 Rh5+ 6. Kg7 Rxh7+
7. Kf8 Rf7+) 5... Rxg5+ 6. Kh6 $1 (6. Kh4 $2 Rg4+ 7. Kh3 Rg3+ 8. Kh2 Rh3+ 9.
Kg2 Rg3+ 10. Kf1 Rf3+ 11. Ke2 Re3+ 12. Kd1 Rd3+ 13. Kc1 Rd1+ 14. Kb2 Rd2+ 15.
Ka3 Ra2+ 16. Kb4 Ra4+ 17. Kb5 Ra5+ 18. Kc6 Rc5+ 19. Kd7 Rd5+ 20. Ke7 Re5+ 21.
Kf7 Re7+ 22. Kg8 Rg7+ 23. Kh8 Rg8+) 6... Rxg6+ 7. Kh5 (7. Bxg6 $2) 7... Rg5+ 8.
Kh4 Rg4+ 9. Kh3 Rg3+ (9... Rh4+ 10. Kg2 Rg4+ 11. Kf3 Rf4+ 12. Ke3 Rf3+ 13. Kxf3
) 10. Kh2 Rh3+ (10... Rg2+ 11. Kxg2) 11. Kg2 Rg3+ 12. Kf1 Rf3+ 13. Ke2 Re3+ 14.
Kd1 Rd3+ 15. Kc1 Rd1+ (15... Rxc3+ 16. Kd1 Rd3+ 17. Ke2 Re3+ 18. Kf1 Rf3+ 19.
Rxf3) 16. Kb2 Rd2+ 17. Ka3 Ra2+ 18. Kb4 Ra4+ 19. Kb5 Ra5+ 20. Kc6 Rc5+ 21. Kd7
Rd5+ 22. Ke7 (22. Nd6 $2 Rxd6+ 23. Ke7 Re6+ 24. Kf7 Rf6+ 25. Kg7 Rg6+) 22...
Re5+ 23. Kf7 Rf5+ 24. Kg7 Rg5+ 25. Bg6 $1 Rxg6+ 26. Kh7 Rg7+ (26... Rh6+ 27.
Qxh6) 27. Kh6 Rg6+ 28. Kh5 Rg5+ 29. Kh4 Rg4+ 30. Kh3 Rg3+ 31. Kh2 Rh3+ 32. Kg2
Rg3+ 33. Kf1 Rf3+ 34. Ke1 Re3+ 35. Kd1 Rd3+ 36. Kc1 Rd1+ 37. Kb2 Rd2+ 38. Ka3
Ra2+ 39. Kb4 Ra4+ 40. Kb5 Ra5+ 41. Kc6 Rc5+ 42. Kd7 Rd5+ 43. Nd6 $1 Rxd6+ 44.
Ke7 Re6+ 45. Kf7 Rf6+ 46. Kg7 Rg6+ 47. Kh7 $1 Rg7+ 48. Kh6 Rg6+ 49. Kh5 Rg5+
50. Kh4 Rg4+ 51. Kh3 Rg3+ 52. Kh2 Rh3+ 53. Kg2 Rg3+ 54. Kf1 Rf3+ 55. Ke2 Re3+
56. Kd1 Rd3+ 57. Kc1 Rd1+ 58. Kb2 Rd2+ 59. Ka3 Ra2+ 60. Kb4 Ra4+ 61. Kb5 Ra5+
62. Kc4 Rc5+ 63. Kd4 Rc4+ 64. Ke3 Rxc3+ 65. Kf4 Rf3+ 66. Rxf3 1-0
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peter
Posts: 3187
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Complex Puzzle

Post by peter »

Nullmove pruning off.

kB5K/2P4B/P4rP1/4r3/2N1n3/1RP4N/3b4/6RQ b - - 0 1

Analysis by Komodo 10.1 64-bit:
...
1...Tf8+ 2.Kg7 Lh6+
+- (250.00 ++) Tiefe: 85 00:00:02 70195kN
...
1...Tf8+ 2.Kg7 Lh6+ 3.Kxh6 Th5+ 4.Kxh5 Tf5+ 5.Sg5 Txg5+ 6.Kh6 Txg6+ 7.Kh5 Tg5+ 8.Kh4 Tg4+ 9.Kh3 Tg3+ 10.Kh2 Th3+ 11.Kg2 Tg3+ 12.Kf1 Tf3+ 13.Ke2 Te3+ 14.Kd1 Td3+ 15.Kc1 Td1+ 16.Kb2 Td2+ 17.Ka3 Ta2+ 18.Kb4 Ta4+ 19.Kb5 Ta5+ 20.Kc6 Tc5+ 21.Kd7 Td5+ 22.Ke8 Te5+ 23.Kf8 Tf5+ 24.Kg7 Tg5+ 25.Lg6 Txg6+ 26.Kh7 Tg7+ 27.Kh6 Tg6+ 28.Kh5 Tg5+ 29.Kh4 Tg4+ 30.Kh3 Tg3+ 31.Kh2 Th3+ 32.Kg2 Tg3+
+- (#67) Tiefe: 99 00:00:03 103MN

P.S. The position has been in this thread already, I'm rather sure
Peter.
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Paloma
Posts: 1167
Joined: Thu Dec 25, 2008 9:07 pm
Full name: Herbert L

Re: Complex Puzzle

Post by Paloma »

peter wrote:Nullmove pruning off.

kB5K/2P4B/P4rP1/4r3/2N1n3/1RP4N/3b4/6RQ b - - 0 1

Analysis by Komodo 10.1 64-bit:
...
1...Tf8+ 2.Kg7 Lh6+
+- (250.00 ++) Tiefe: 85 00:00:02 70195kN
...
1...Tf8+ 2.Kg7 Lh6+ 3.Kxh6 Th5+ 4.Kxh5 Tf5+ 5.Sg5 Txg5+ 6.Kh6 Txg6+ 7.Kh5 Tg5+ 8.Kh4 Tg4+ 9.Kh3 Tg3+ 10.Kh2 Th3+ 11.Kg2 Tg3+ 12.Kf1 Tf3+ 13.Ke2 Te3+ 14.Kd1 Td3+ 15.Kc1 Td1+ 16.Kb2 Td2+ 17.Ka3 Ta2+ 18.Kb4 Ta4+ 19.Kb5 Ta5+ 20.Kc6 Tc5+ 21.Kd7 Td5+ 22.Ke8 Te5+ 23.Kf8 Tf5+ 24.Kg7 Tg5+ 25.Lg6 Txg6+ 26.Kh7 Tg7+ 27.Kh6 Tg6+ 28.Kh5 Tg5+ 29.Kh4 Tg4+ 30.Kh3 Tg3+ 31.Kh2 Th3+ 32.Kg2 Tg3+
+- (#67) Tiefe: 99 00:00:03 103MN

P.S. The position has been in this thread already, I'm rather sure
Yes Peter, here:
http://www.talkchess.com/forum/viewtopi ... 457#668457
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User avatar
Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Re: Complex Puzzle

Post by Nordlandia »

Cook :arrow:

[pgn][Event ".c Shakhmaty v SSSR (tt)"]
[Site "?"]
[Date "1974.??.??"]
[Round "?"]
[White "Kuryatnikov=A"]
[Black "(+4300.34c2a8)"]
[Result "1-0"]
[SetUp "1"]
[FEN "kq6/1p5P/rp1p4/1p6/1P2P3/5Q2/2K5/8 w - - 0 1"]
[PlyCount "31"]
[EventDate "1974.??.??"]

{Shakhmaty v SSSR/4 1976 EG#03179} 1. Qc3 Ra2+ 2. Kd3 Rh2 $4 (2... d5 $1 3.
h8=Q dxe4+ 4. Kxe4 Qxh8 5. Qxh8+ Ka7 {Positional draw}) 3. Qa1+ Qa7 4. h8=Q+
Rxh8 5. Qxh8+ Qb8 6. Qa1+ Qa7 7. Qxa7+ Kxa7 8. Kd4 Kb8 9. Kd5 Kc7 10. Ke6 Kc6
11. Kf6 (11. Ke7 $2 d5) 11... Kd7 12. Kf7 Kc6 13. Ke6 Kc7 14. Ke7 Kc6 15. Kd8
d5 16. e5 1-0

[/pgn]

Code: Select all

[Event ".c Shakhmaty v SSSR (tt)"]
[Site "?"]
[Date "1974.??.??"]
[Round "?"]
[White "Kuryatnikov=A"]
[Black "(+4300.34c2a8)"]
[Result "1-0"]
[SetUp "1"]
[FEN "kq6/1p5P/rp1p4/1p6/1P2P3/5Q2/2K5/8 w - - 0 1"]
[PlyCount "31"]
[EventDate "1974.??.??"]

{Shakhmaty v SSSR/4 1976 EG#03179} 1. Qc3 Ra2+ 2. Kd3 Rh2 $4 (2... d5 $1 3.
h8=Q dxe4+ 4. Kxe4 Qxh8 5. Qxh8+ Ka7 {Positional draw}) 3. Qa1+ Qa7 4. h8=Q+
Rxh8 5. Qxh8+ Qb8 6. Qa1+ Qa7 7. Qxa7+ Kxa7 8. Kd4 Kb8 9. Kd5 Kc7 10. Ke6 Kc6
11. Kf6 (11. Ke7 $2 d5) 11... Kd7 12. Kf7 Kc6 13. Ke6 Kc7 14. Ke7 Kc6 15. Kd8
d5 16. e5 1-0
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