Hard Puzzle for May

[Hobacle]

[d]5Nbn/K2P1pPq/2k2PpB/5pPp/8/8/8/1B1r4 w - - 0 1

White to win.


Thanks for Peter and Spliffjiffer's help!

[peter]

[d]5Nbn/K2P1pPq/2k2PpB/5pPp/8/8/8/1B1r4 w - - 0 1

White to win.


Thanks for Peter and Spliffjiffer's help!

You're welcome!

I'll now keep out for a little while and wait, how others see this piece of art regards

[towforce]

I've tried many variations at https://www.chess.com/analysis but nothing seems to work (at least nothing obvious).

[peter]

I've tried many variations at https://www.chess.com/analysis but nothing seems to work (at least nothing obvious).

No variants at the link for me.
Does one have to register and log in

[towforce]

I've tried many variations at https://www.chess.com/analysis but nothing seems to work (at least nothing obvious).

No variants at the link.
Does one have to log in

Sorry - seem to have mislead you! What I meant was I went to that address (chess.com's analysis page), pasted the fen, and tried lots of different ways to win as white. I didn't mean to imply that you could go to that address and look at all the different ways I've tried.

[peter]

I'll now keep out for a little while and wait, how others see this piece of art regards

Ok, so once again my lines of interest to the position in a .pgn, hasn't changed much since last time, just a few variants to show the traps, that are in the long endgame and how much (little) difference is in marching with black f-Pawn instead of h-Pawn at first.
Stopped hunting the exact DTM, doesn't matter much for it isn't a mate in x-puzzle. 50 moves- boundary is irrelevant as for studies too of course.

[pgn][[Event "?"]
[Site "?"]
[Date "2021.05.09"]
[Round "?"]
[White "Hobacle, Without"]
[Black "Dual, Of Concern"]
[Result "1-0"]
[Annotator "Martan,Peter"]
[SetUp "1"]
[FEN "5Nbn/K2P1pPq/2k2PpB/5pPp/8/8/8/1B1r4 w - - 0 1"]
[PlyCount "215"]

1. Ka6 (1. Kb8 $2 Rxd7 (1... Rxb1+ $2 2. Kc8 Ra1 3. d8=N+ $18) 2. Kc8 (2. Nxd7
$2 Kxd7 3. Bd3 Kd6 4. Bf1 $19) 2... Ra7 3. Kb8 Rd7 (3... Ra1 4. Nxh7 Rxb1+ 5.
Kc8 Re1 $11) 4. Kc8 Rc7+ 5. Kd8 Ra7 $11 6. Nxh7 Bxh7 7. Ke8 Ra8+ 8. Ke7 Kd5 9.
Bd3 f4 10. gxh8=Q Rxh8 11. Kxf7 Rg8 12. Ke7 f3 13. f7 h4 14. Bf1 Ke5 15. f8=Q
Rxf8 16. Kxf8 Kf4 17. Bg7 Kxg5 18. Bd4 Kh6 19. Bh3 Kh5 20. Kg7 g5 21. Bd7 Bg6
22. Kf6 g4 23. Ke5 g3 24. Kf4 f2 25. Bxf2 gxf2 {Draw 6}) (1. Ka8 $2 Rxd7 2.
Nxd7 Kxd7 3. Bd3 Ke6 4. Bf1 Ke5 5. Kb8 f4 6. Bg2 Kd4 7. Kc7 Kc5 $19) (1. Ba2 $2
Rxd7+ 2. Nxd7 Kxd7 3. Bd5 Kd6 4. Bf3 Ke5 5. Kb6 Kd4 6. Bh1 f4 7. Kc6 Ke3 $19) (
1. Nxh7 $2 Rxd7+ 2. Ka6 Rd8 3. Ka5 Bxh7 4. Bd3 h4 5. Bf1 f4 $19) 1... Rxd7 2.
Nxd7 Kxd7 3. Kb5 Kd6 4. Kc4 Ke5 5. Kd3 Kf4 6. Ke2 Kg3 7. Kf1 Kf3 8. Ba2 Ke3 9.
Bd5 Kd4 10. Bh1 Ke3 11. Bg2 Kd3 12. Kf2 Kd4 13. Bf1 Kc3 14. Ke3 Kc2 15. Be2 Kc3
16. Bd3 Kb3 17. Kd2 Kb4 18. Be2 Kc5 19. Kd3 Kb4 20. Bd1 Kc5 21. Bb3 Kb4 22. Bc4
Kc5 23. Kc3 Kb6 24. Kd4 Ka5 25. Kc5 Ka4 26. Bd5 Ka3 27. Kc4 Kb2 28. Kd3 Ka3 29.
Kc3 Ka4 30. Bc6+ Ka5 31. Be8 Ka6 32. Kc4 Kb6 33. Kb4 Kb7 34. Kc5 Ka6 35. Bc6
Ka5 36. Bb5 h4 (36... f4 $6 37. Bc6 Ka6 38. Kd4 Kb6 39. Bf3 Kb5 40. Ke4 Kc5 41.
Kxf4 Kd4 42. Be4 Kc4 43. Ke3 Kc3 44. Bd3 Kb3 45. Kd4 Kb2 46. Kc4 Kc1 47. Kc3
Kd1 48. Bc4 Ke1 49. Kd3 Kd1 50. Bb3+ Ke1 51. Ke3 Kf1 52. Bc4+ Kg2 53. Bd5+ Kf1
54. Bf3 h4 55. Ba8 Ke1 56. Kf3 Kd2 57. Kg4 Ke1 58. Kxh4 Kd2 59. Kg3 Ke3 60. Bb7
Ke2 61. Kf4 Kd3 62. Ke5 Kc3 63. Ba6 Kd2 64. Kd4 Kc2 65. Bb5 Kd2 66. Bd3 Kd1 67.
Kc3 Ke1 68. Bc4 Kf2 69. Kd4 Kf3 70. Bb5 Kf4 71. Be2 Kf5 72. Bd3+ Kf4 73. Be4
Kg3 74. Ke3 Kg4 75. Bd3 Kg3 76. Be2 Kg2 77. Bd1 Kg3 78. Bf3 Kh4 79. Kf2 Kh3 80.
Be2 Kh4 81. Kf3 Kh3 82. Ba6 Kh2 83. Kf2 Kh3 84. Bc8+ Kh4 85. Kf3 Qxg7 86. fxg7
f5 87. gxh8=Q Bd5+ 88. Kf2 Kg4 89. Qe5 Kh5 90. Qh2+ Kg4 91. Qg3+ Kh5 92. Qh3#)
37. Bf1 Ka4 38. Kd4 Kb4 39. Ke3 Kc3 40. Kf3 Kd2 41. Kg2 Ke3 42. Bb5 (42. Kh3 $6
Kf4 (42... f4 $6 43. Kg2 (43. Kxh4 $2 Qxh6+ 44. gxh6 g5+ 45. Kxg5 (45. Kh3 Ng6
$19) (45. Kh5 Ng6 $19) 45... Ng6 $19) 43... Ke4 44. Kf2 f3 45. Bh3 Kf4 46. Bd7
Ke4 47. Bc6+ Kf4 48. Bxf3 $18) 43. Be2 Ke5 44. Kxh4 $18) 42... Ke4 (42... Kf4
43. Kh3 Kf3 44. Bc6+ Ke3 45. Kxh4 $18 {et seqq. like in mainline}) 43. Kh3 Kf4
44. Bc4 (44. Kxh4 $2 Qxh6+ $19) 44... Ke4 45. Kxh4 Kd4 46. Bf1 Kd5 47. Kg3 Kd4
48. Kf4 Kc3 49. Kf3 Kd4 50. Be2 Ke5 51. Ke3 Kd5 52. Bf3+ Kc5 53. Kd3 Kb5 54.
Kc3 Kc5 55. Ba8 Kb5 56. Kd4 Kb4 57. Bd5 Kb5 58. Bc4+ Kb4 59. Kd3 Kc5 60. Bb3
Kb5 61. Kd4 Kb4 62. Bc4 Ka4 63. Kc3 Ka5 64. Be2 Ka4 65. Bd1+ Kb5 66. Be2+ Ka4
67. Kc4 Ka5 68. Bf3 Kb6 69. Kb4 Ka6 70. Kc5 Ka5 71. Bd1 Ka6 72. Be2+ Kb7 73.
Bb5 Kc7 74. Bc6 Kc8 75. Kb6 f4 76. Kc5 Kb8 77. Kd6 Ka7 78. Ke5 Kb6 79. Bf3 Kb5
80. Kxf4 Kb4 81. Be2 Kb3 82. Ke3 Kc3 83. Bd3 Kb4 84. Kd4 Kb3 85. Be4 Kb4 86.
Bd5 Kb5 87. Ba2 Kb4 88. Bc4 Ka5 89. Kc5 Ka4 90. Bd5 Ka3 91. Kc4 Kb2 92. Kd3 Ka3
93. Kc3 Ka4 94. Bc6+ Ka5 95. Be8 Ka6 96. Kb4 Kb7 97. Kb5 Kc7 98. Kc5 Kb7 99.
Bb5 Kc7 100. Bc6 Kd8 101. Kb6 Kc8 102. Bb5 Kb8 103. Bd7 Ka8 104. Bc8 Kb8 105.
Bb7 Qxg7 106. Bxg7 Bh7 107. Bf8 Bg8 108. Bd6# 1-0
[/pgn]

[Milos]

[d]5Nbn/K2P1pPq/2k2PpB/5pPp/8/8/8/1B1r4 w - - 0 1

White to win.


Thanks for Peter and Spliffjiffer's help!

What is the name of this board game from which is this puzzle?

[towforce]

What is the name of this board game from which is this puzzle?

Chess?

[towforce]

Ok, so once again my lines of interest to the position in a .pgn, hasn't changed much since last time, just a few variants to show the traps, that are in the long endgame and how much (little) difference is in marching with black f-Pawn instead of h-Pawn at first.
Stopped hunting the exact DTM, doesn't matter much for it isn't a mate in x-puzzle. 50 moves- boundary is irrelevant as for studies too of course.

[pgn][[Event "?"]
[Site "?"]
[Date "2021.05.09"]
[Round "?"]
[White "Hobacle, Without"]
[Black "Dual, Of Concern"]
[Result "1-0"]
[Annotator "Martan,Peter"]
[SetUp "1"]
[FEN "5Nbn/K2P1pPq/2k2PpB/5pPp/8/8/8/1B1r4 w - - 0 1"]
[PlyCount "215"]

1. Ka6 (1. Kb8 $2 Rxd7 (1... Rxb1+ $2 2. Kc8 Ra1 3. d8=N+ $18) 2. Kc8 (2. Nxd7
$2 Kxd7 3. Bd3 Kd6 4. Bf1 $19) 2... Ra7 3. Kb8 Rd7 (3... Ra1 4. Nxh7 Rxb1+ 5.
Kc8 Re1 $11) 4. Kc8 Rc7+ 5. Kd8 Ra7 $11 6. Nxh7 Bxh7 7. Ke8 Ra8+ 8. Ke7 Kd5 9.
Bd3 f4 10. gxh8=Q Rxh8 11. Kxf7 Rg8 12. Ke7 f3 13. f7 h4 14. Bf1 Ke5 15. f8=Q
Rxf8 16. Kxf8 Kf4 17. Bg7 Kxg5 18. Bd4 Kh6 19. Bh3 Kh5 20. Kg7 g5 21. Bd7 Bg6
22. Kf6 g4 23. Ke5 g3 24. Kf4 f2 25. Bxf2 gxf2 {Draw 6}) (1. Ka8 $2 Rxd7 2.
Nxd7 Kxd7 3. Bd3 Ke6 4. Bf1 Ke5 5. Kb8 f4 6. Bg2 Kd4 7. Kc7 Kc5 $19) (1. Ba2 $2
Rxd7+ 2. Nxd7 Kxd7 3. Bd5 Kd6 4. Bf3 Ke5 5. Kb6 Kd4 6. Bh1 f4 7. Kc6 Ke3 $19) (
1. Nxh7 $2 Rxd7+ 2. Ka6 Rd8 3. Ka5 Bxh7 4. Bd3 h4 5. Bf1 f4 $19) 1... Rxd7 2.
Nxd7 Kxd7 3. Kb5 Kd6 4. Kc4 Ke5 5. Kd3 Kf4 6. Ke2 Kg3 7. Kf1 Kf3 8. Ba2 Ke3 9.
Bd5 Kd4 10. Bh1 Ke3 11. Bg2 Kd3 12. Kf2 Kd4 13. Bf1 Kc3 14. Ke3 Kc2 15. Be2 Kc3
16. Bd3 Kb3 17. Kd2 Kb4 18. Be2 Kc5 19. Kd3 Kb4 20. Bd1 Kc5 21. Bb3 Kb4 22. Bc4
Kc5 23. Kc3 Kb6 24. Kd4 Ka5 25. Kc5 Ka4 26. Bd5 Ka3 27. Kc4 Kb2 28. Kd3 Ka3 29.
Kc3 Ka4 30. Bc6+ Ka5 31. Be8 Ka6 32. Kc4 Kb6 33. Kb4 Kb7 34. Kc5 Ka6 35. Bc6
Ka5 36. Bb5 h4 (36... f4 $6 37. Bc6 Ka6 38. Kd4 Kb6 39. Bf3 Kb5 40. Ke4 Kc5 41.
Kxf4 Kd4 42. Be4 Kc4 43. Ke3 Kc3 44. Bd3 Kb3 45. Kd4 Kb2 46. Kc4 Kc1 47. Kc3
Kd1 48. Bc4 Ke1 49. Kd3 Kd1 50. Bb3+ Ke1 51. Ke3 Kf1 52. Bc4+ Kg2 53. Bd5+ Kf1
54. Bf3 h4 55. Ba8 Ke1 56. Kf3 Kd2 57. Kg4 Ke1 58. Kxh4 Kd2 59. Kg3 Ke3 60. Bb7
Ke2 61. Kf4 Kd3 62. Ke5 Kc3 63. Ba6 Kd2 64. Kd4 Kc2 65. Bb5 Kd2 66. Bd3 Kd1 67.
Kc3 Ke1 68. Bc4 Kf2 69. Kd4 Kf3 70. Bb5 Kf4 71. Be2 Kf5 72. Bd3+ Kf4 73. Be4
Kg3 74. Ke3 Kg4 75. Bd3 Kg3 76. Be2 Kg2 77. Bd1 Kg3 78. Bf3 Kh4 79. Kf2 Kh3 80.
Be2 Kh4 81. Kf3 Kh3 82. Ba6 Kh2 83. Kf2 Kh3 84. Bc8+ Kh4 85. Kf3 Qxg7 86. fxg7
f5 87. gxh8=Q Bd5+ 88. Kf2 Kg4 89. Qe5 Kh5 90. Qh2+ Kg4 91. Qg3+ Kh5 92. Qh3#)
37. Bf1 Ka4 38. Kd4 Kb4 39. Ke3 Kc3 40. Kf3 Kd2 41. Kg2 Ke3 42. Bb5 (42. Kh3 $6
Kf4 (42... f4 $6 43. Kg2 (43. Kxh4 $2 Qxh6+ 44. gxh6 g5+ 45. Kxg5 (45. Kh3 Ng6
$19) (45. Kh5 Ng6 $19) 45... Ng6 $19) 43... Ke4 44. Kf2 f3 45. Bh3 Kf4 46. Bd7
Ke4 47. Bc6+ Kf4 48. Bxf3 $18) 43. Be2 Ke5 44. Kxh4 $18) 42... Ke4 (42... Kf4
43. Kh3 Kf3 44. Bc6+ Ke3 45. Kxh4 $18 {et seqq. like in mainline}) 43. Kh3 Kf4
44. Bc4 (44. Kxh4 $2 Qxh6+ $19) 44... Ke4 45. Kxh4 Kd4 46. Bf1 Kd5 47. Kg3 Kd4
48. Kf4 Kc3 49. Kf3 Kd4 50. Be2 Ke5 51. Ke3 Kd5 52. Bf3+ Kc5 53. Kd3 Kb5 54.
Kc3 Kc5 55. Ba8 Kb5 56. Kd4 Kb4 57. Bd5 Kb5 58. Bc4+ Kb4 59. Kd3 Kc5 60. Bb3
Kb5 61. Kd4 Kb4 62. Bc4 Ka4 63. Kc3 Ka5 64. Be2 Ka4 65. Bd1+ Kb5 66. Be2+ Ka4
67. Kc4 Ka5 68. Bf3 Kb6 69. Kb4 Ka6 70. Kc5 Ka5 71. Bd1 Ka6 72. Be2+ Kb7 73.
Bb5 Kc7 74. Bc6 Kc8 75. Kb6 f4 76. Kc5 Kb8 77. Kd6 Ka7 78. Ke5 Kb6 79. Bf3 Kb5
80. Kxf4 Kb4 81. Be2 Kb3 82. Ke3 Kc3 83. Bd3 Kb4 84. Kd4 Kb3 85. Be4 Kb4 86.
Bd5 Kb5 87. Ba2 Kb4 88. Bc4 Ka5 89. Kc5 Ka4 90. Bd5 Ka3 91. Kc4 Kb2 92. Kd3 Ka3
93. Kc3 Ka4 94. Bc6+ Ka5 95. Be8 Ka6 96. Kb4 Kb7 97. Kb5 Kc7 98. Kc5 Kb7 99.
Bb5 Kc7 100. Bc6 Kd8 101. Kb6 Kc8 102. Bb5 Kb8 103. Bd7 Ka8 104. Bc8 Kb8 105.
Bb7 Qxg7 106. Bxg7 Bh7 107. Bf8 Bg8 108. Bd6# 1-0
[/pgn]

Well I'm not ashamed of having failed to spot that line!

[Milos]

What is the name of this board game from which is this puzzle?

Chess?

Board and pieces look like they are coming from a chess game. OTOH, the position on the board has nothing to do with the game of chess. Therefore, my next question would what are the rules for movement of chess pieces? Coz to me it looks as if pawns for example could be randomly moving in all forward directions based on the number you get after rolling the dice.