Hard Puzzle for May

[peter]

and what cfish thought about the 5 best moves in the root position (MPV=5):

Code: Select all

FEN: 5Nbn/3P1pPq/K1k2PpB/5pPp/8/8/8/1B1r4 b - - 1 1

Cfish 250321 64 AVX2 NUMA:

---------------------------------------------------------------------------
 49/106	04:36	 4.922.203k	17.823k	-7,39	Ka7-a8 Td1xd7 Lb1-e4+ Kc6-c7 Le4-b7 Td7-d8+ Ka8-a7 h5-h4 Lb7-g2 Td8-d2 Ka7-a6 Td2xg2 Sf8xh7 Kc7-c6 Ka6-a7 h4-h3 g7xh8D Tg2-a2+ Ka7-b8 h3-h2 Dh8xg8 h2-h1D Dg8-e8+ Kc6-c5 De8-e7+ Kc5-b5 De7-e5+ Kb5-c4 De5-f4+ Dh1-e4 Df4-c7+ Kc4-b5 Dc7-d7+ De4-c6 Dd7-d3+ Kb5-a5 Dd3-d8+ Dc6-b6+ Dd8xb6+ Ka5xb6 Sh7-f8 Ta2-e2 Kb8-c8 f5-f4 Sf8xg6 f4-f3 Sg6-e7 f3-f2 Kc8-d8 f2-f1D Kd8-e8 Te2-a2 Ke8xf7 Kb6-b5 Kf7-g7 Df1-f4 Se7-d5 Df4-d4 Sd5-e7 Ta2-a8 Kg7-h7 Dd4-f4 Kh7-g6 Ta8-a2 Kg6-g7 Df4-d4 Kg7-g8 Dd4-c4+ Kg8-g7 Ta2-a7 Kg7-h7 Dc4-f4 Kh7-g7 Df4-e4 Kg7-g8 De4-e5 Kg8-h7 De5-b8 g5-g6 Db8-e5 Lh6-g7 De5-h2+ Lg7-h6 Dh2-h4 f6-f7 Dh4xe7 Kh7-g8 De7-e6
 49/58	04:36	 4.922.203k	17.823k	-4,21	Lb1-a2 f5-f4 La2-c4 f4-f3 Lc4-a6 f3-f2 La6-e2 Td1xd7+ Sf8xd7 Kc6xd7 Ka7-b6 Kd7-d6 Le2-f1 Kd6-d5 Kb6-b5 h5-h4 Kb5-b4 Kd5-e4 Kb4-c4 Ke4-f4 Kc4-d3 Kf4-g3 Kd3-e3 h4-h3 Lf1xh3 Kg3xh3 Ke3xf2 Kh3-g4 Kf2-e3 Kg4-f5 Ke3-f3 Kf5-e5 Kf3-g4 Ke5-d4 Kg4-h3 Kd4-d3 Kh3-h2 Kd3-c4 Kh2-h3 Kc4-b5 Kh3-g2 Kb5-b4 Kg2-h3 Kb4-a4 Kh3-h2 Ka4-a3 Kh2-g3 Ka3-b3 Kg3-f4 Kb3-c4 Kf4-g3 Kc4-d5 Kg3-h3 Kd5-d6 Kh3-g3 Kd6-c6 Kg3-g2 Kc6-b5
 49/62	04:36	 4.922.203k	17.823k	-0,24	Lb1-c2 Td1xd7+ Ka7-a6 Td7-d8 Lc2-a4+ Kc6-d6 La4-b5 Kd6-c7 Lb5-e2 Td8-a8+ Ka6-b5 Ta8-b8+ Kb5-a6 Tb8-d8 Ka6-b5 Td8-a8 Le2-f3 Ta8-e8 Lf3-e2 h5-h4 Le2-f1 Te8-d8 Kb5-a6 Td8-b8 Lf1-g2 Tb8-c8 Ka6-b5 Tc8-d8 Kb5-a6 f5-f4 Ka6-b5 Kc7-d6 Kb5-a6 Td8-b8 Ka6-a7 Kd6-c7 Ka7-a6 h4-h3 Lg2xh3 f4-f3 Sf8xh7 Lg8xh7 Lh3-g4 Tb8-a8+ Ka6-b5 f3-f2 Lg4-h3 Kc7-d6 Kb5-b6 Ta8-b8+ Kb6-a7 Kd6-c7 Ka7-a6 Kc7-c6 Lh3-g2+ Kc6-c5 Ka6-a7 Tb8-e8 Ka7-b7 Kc5-d4 Kb7-c7 Kd4-e3
 50/8	04:36	 4.922.203k	17.823k	 0,00	Ka7-b8 Td1xd7 Kb8-c8 Td7-a7 Kc8-b8 Ta7-b7+ Kb8-c8
 50/61	04:36	 4.922.203k	17.823k	+2,04	Ka7-a6 Td1xd7 Sf8xd7 Kc6xd7 Ka6-b5 Kd7-d6 Kb5-b4 Kd6-e5 Kb4-c3 Ke5-f4 Kc3-d2 Kf4-f3 Kd2-e1 Kf3-e3 Ke1-f1 Ke3-f4 Kf1-f2 Kf4-g4 Kf2-e2 Kg4-f4 Lb1-d3 Kf4-e5 Ke2-e3 Ke5-d5 Ld3-a6 Kd5-e5 La6-c4 h5-h4 Ke3-f3 Ke5-d4 Lc4-a6 Kd4-c3 Kf3-g2 Kc3-d4 La6-b5 Kd4-e3 Lb5-f1 Ke3-e4 Kg2-h3 Ke4-f3 Lf1-g2+ Kf3-e2 Kh3xh4 f5-f4 Kh4-g4 f4-f3 Lg2xf3+ Ke2-e3 Lf3-g2 Ke3-d2 Lg2-f1 Kd2-e3 Lf1-b5 Ke3-e4 Kg4-h3 Ke4-e3 Kh3-g2 Ke3-e4 Kg2-f2 Ke4-d4 Lb5-f1

Fine, fine!
Your hardware's significantly better than mine for this for sure, tried Cfish also, even one with nullmove to be switched off too, yet still no chance to keep a positive score backward to starting position in hash.
No matter, as long as you nor Hobacle don't find any further holes, guess new main line is ok again.
Will wait for it coming in full length from your or from Hobacle's side this time again, I guess

[peter]

yet still no chance to keep a positive score backward to starting position in hash.

But some more success at least to position after deviation with 4.Kb4(!) instead of Kc4(?).

5Nbn/K2P1pPq/2k2PpB/5pPp/8/8/8/1B1r4 w - - 0 1
1. Ka6 Rxd7 2. Nxd7 Kxd7 3. Kb5 Kd6 4. Kb4

[d]6bn/5pPq/3k1PpB/5pPp/1K6/8/8/1B6 b - - 0 1

Analysis by CorChess 6.0 290620 64 POPCNT:

4...Kd5 5.Kc3 f4 6.Kd2 Kd4 7.Ke2 h4 8.Kf2 h3 9.Ba2 Ke5 10.Bc4 h2 11.Kg2 h1Q+ 12.Kxh1 f3 13.Kh2 f2 14.Kg2 Kd6 15.Bf1 Ke6 16.Kg3 Kf5 17.Bd3+ Ke5 18.Kxf2 Kf4 19.Bf1 Ke4 20.Ke2 Kf4 21.Kd3 Kg4 22.Be2+ Kf5 23.Kd4 Ke6 24.Bg4+ Kd6 25.Bh3 Kc6 26.Bg2+ Kb6 27.Bf3 Kb5 28.Bg4 Kb4 29.Be2 Kb3 30.Bf3 Kb4 31.Ke3 Kc4 32.Be2+ Kd5 33.Bg4 Kd6 34.Kd4 Kc7 35.Bf3 Kb6 36.Ke3 Ka5 37.Kf2 Ka6 38.Bc6 Kb6
+- (57.22) Depth: 63/69 00:02:24 3569MN

Fish trying 4...Kd5 instead of ...Ke5 here, shortcut with 5...f4 (?!).

Edit: Just in time rest of the Backward went faster and better, than I had expected, output with full hash at starting position now:

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

Analysis by CorChess 6.0 290620 64 POPCNT:

1.Ka6 Rxb1 2.d8N+ Kc5 3.Nxh7 Ra1+ 4.Kb7 Rb1+ 5.Kc7 f4 6.gxh8Q f3 7.Qxg8 f2 8.Qf8+ Kd4 9.Nc6+ Ke3 10.Qxf7 f1Q 11.Qe6+ Kd2 12.f7 Qf4+ 13.Qd6+ Qxd6+ 14.Kxd6 Rb3 15.f8Q Rd3+ 16.Kc7 h4 17.Qf6 Re3 18.Qxg6 h3 19.Qh5 Rc3 20.g6+ Kc2 21.Qf5+ Kb2 22.Qb5+ Kc2 23.g7 Rg3 24.Qe5 Kd1 25.Qxg3
+- (20.27) Depth: 30/67 00:02:37 3573MN

Funny Fish trying to avoid main line with 1...Rxb1 now


Took this old CorChess this time, because before NNUE came up, mate search of SF was better in a way as for my personal pov, at least as for positions like this one.
And CorChess (I. Ivec) had less nullmove pruning than SF dev. since a very long time anyhow regards

[peter]

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

Analysis by CorChess 6.0 290620 64 POPCNT:

1.Ka6 Rxb1 2.d8N+ Kc5 3.Nxh7 Ra1+ 4.Kb7 Rb1+ 5.Kc7 f4 6.gxh8Q f3 7.Qxg8 f2 8.Qf8+ Kd4 9.Nc6+ Ke3 10.Qxf7 f1Q 11.Qe6+ Kd2 12.f7 Qf4+ 13.Qd6+ Qxd6+ 14.Kxd6 Rb3 15.f8Q Rd3+ 16.Kc7 h4 17.Qf6 Re3 18.Qxg6 h3 19.Qh5 Rc3 20.g6+ Kc2 21.Qf5+ Kb2 22.Qb5+ Kc2 23.g7 Rg3 24.Qe5 Kd1 25.Qxg3
+- (20.27) Depth: 30/67 00:02:37 3573MN

Majkel Novak's SF- branch with the fine "Find Mate"- feature:

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

Analysis by HekaStockfishNNUE 280920:

1.Ka6 Rxd7 2.Nxd7 Kxd7 3.Kb5 h4 4.Kc5 h3 5.Ba2 h2 6.Bd5 Kc8 7.Kd4 Kc7 8.Bh1 Kc8 9.Ke3 Kb8 10.Kf2 Kc7 11.Ke2 Kb8 12.Ke1 Ka7 13.Kd1 Kb8 14.Kc2 Kc7 15.Kb1 Kd8 16.Ka1 Ke8 17.Bf3 Kd8 18.Ba8 Kc7 19.Kb2 Kc8 20.Bf3 Kd8 21.Ka3 Kc7 22.Bh1 Kd7 23.Kb4 Kd8 24.Kc4 Kc8 25.Kb5 Kb8 26.Ka5 Kc8 27.Ka4 Kd8 28.Kb4 Kc7 29.Bg2 Kd6 30.Kc3 Kd7 31.Kd4 Kd8 32.Bf3 Kd7 33.Ke5 Kd8 34.Kd6 Kc8 35.Bh1 Kb8 36.Ke7 Kc8 37.Ba8 h1Q
+- (11.03) Depth: 65/74 00:15:59 21642MN

Shortcut at 3...h4, considering that, something between 90 and 100 seems to be a realistic DTM to me regards

[Spliffjiffer]

hi Peter...i think that this assumption is correct...i had some indicative analysis, but after 4. Kb4 this analysis is no longer holdable anymore without a decent research....i think ure probably right, that the right answer of a perfect DTM lies between 90 and 100 moves !?....even if it takes some time, i will not forget this and i WILL come up with an improvement....at THIS time im absolutely amased by your suggestion of using "corefish" and its "output" makes theses things just longer for me, im a guy who likes good advices and i like to investigate there...u brought a new real analysis "hint" (corechess) into this and im aware now of its strengh....so much thanks that ure so delightful to share your thoughts and investigations, as well as your conclusions and finds !...this "corechess find" is a huge simplification in analysing this position imo and i need time to throw everything over the reling and investigate again, every suggestion between say 95 and 100 would hit my awaitings...thanks very much, Peter !

[peter]

u brought a new real analysis "hint" (corechess) into this and im aware now of its strengh....so much thanks that ure so delightful to share your thoughts and investigations, as well as your conclusions and finds !...this "corechess find" is a huge simplification in analysing this position imo and i need time to throw everything over the reling and investigate again, every suggestion between say 95 and 100 would hit my awaitings...thanks very much, Peter !

You mean this one from I.Ivec too, don't you?

http://chess.ultimaiq.net/stockfish.html

It's a very fine branch of SF with it's lesser nullmove- pruning and LMRs.

A specialised MateFinder is missing since Joseph Ellis stopped development (replaced by Crystal), Majkel Novak's HekaStockfish has an option Find Mate and many other UCI options of tactical settings too. Pity no more updates since over half a year now too, as far as I know.

As for DTM, that's so far the best I have since you brought up the new main line with 4.Kb4! instead of Kc4?

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

1. Ka6 Rxd7 2. Nxd7 Kxd7 3. Kb5 Kd6 4. Kb4 Ke5 5. Kc3 Kf4 6. Kd2 Kf3 7. Ke1 Ke3
8. Kf1 Kf3 9. Ba2 Kf4 10. Kf2 Ke5 11. Bc4 Kd4 12. Bf1 Kc3 13. Ke3 Kb4 14. Bg2
Kc3 15. Bd5 Kb4 16. Kd3 Kb5 17. Kd4 Kb4 18. Bc4 Ka3 19. Kc3 Ka4 20. Bb3+ Kb5
21. Bd5 Kc5 22. Bc4 Kc6 23. Kd4 Kd6 24. Bd5 Kd7 25. Kc5 Kc7 26. Bc6 Kc8 27. Kb6
h4 28. Kc5 h3 29. Kd4 Kc7 30. Bf3 h2 31. Ke3 Kd6 32. Kf2 Ke5 33. Kg2 Kf4 34.
Bc6 h1=Q+ 35. Kxh1 Ke5 36. Kg2 Kd4 37. Kf3 Kc5 38. Be8 Kd4 39. Ke2 Kc4 40. Ke3
Kc5 41. Kd3 Kb4 42. Bc6 Kc5 43. Bf3 Kb5 44. Kd4 Kb4 45. Bc6 Kb3 46. Kd3 Kb4 47.
Bd5 Kb5 48. Kc3 Kc5 49. Bc4 Kc6 50. Kd4 Kb6 51. Bf1 Kc6 52. Kc4 Kd6 53. Bg2 Ke5
54. Bb7 Ke6 55. Kd4 Kd6 56. Bd5 Kd7 57. Kc5 Kc7 58. Bc6 Kc8 59. Kb6 f4 60. Kc5
Kc7 61. Be4 Kd7 62. Kd4 Kc7 63. Ke5 Kb6 64. Kxf4 Kc5 65. Ke3 Kc4 66. Bb1 Kc3
67. Bd3 Kb4 68. Kd4 Kb3 69. Be4 Kb4 70. Bc2 Kb5 71. Bd3+ Kb4 72. Bc4 Ka5 73.
Kc5 Ka4 74. Bd5 Ka3 75. Kc4 Kb2 76. Kd3 Ka3 77. Kc3 Ka4 78. Bc6+ Ka5 79. Be8
Ka6 80. Kb4 Kb6 81. Bb5 Kc7 82. Kc5 Kb7 83. Ba4 Ka6 84. Bc6 Ka7 85. Kb5 Kb8 86.
Kb6 Kc8 87. Ba4 Kb8 88. Be8 Qxg7 89. fxg7 Kc8 90. gxh8=Q f6 91. Bc6 Kd8 92.
Qxf6+ Kc8 93. Qf8#

If there isn't much shortcut nor detour in first 30 moves till ...h4, the next 30 to ...f4 will be about ok too probably, at least the last 33 from then onwards should be so for rather sure:

[d]2k3bn/5pPq/2B2PpB/2K2pP1/8/8/8/8 w - - 0 1
Analysis by MateFinder 050320 64:

59.Kb6 f4 60.Bb5 f3 61.Bd3 Kb8 62.Kc5 Kc7 63.Kd4 Kb6 64.Ke3 Kc5 65.Kxf3 Kd4 66.Ke2 Kc3 67.Ke3 Kb2 68.Kd4 Kb3 69.Be4 Kb4 70.Bc2 Kb5 71.Bd3+ Kb4 72.Bc4 Ka5 73.Kc5 Ka4 74.Bd5 Ka3 75.Kc4 Kb2 76.Kd3 Ka3 77.Kc3 Ka4 78.Bc6+ Ka5 79.Kc4 Kb6 80.Kd5 Qxg7 81.Bxg7 Bh7 82.Bf8 Bg8 83.Be7 Ka6 84.Kc5 Bh7 85.Bd6 Bg8 86.Bc7 Ka7 87.Bf3 Bh7 88.Kc6 Bg8 89.Be2 Bh7 90.Bh2 Bg8 91.Kc7 Ka8 92.Bg1 Bh7 93.Bf3#
+- (#35) Depth: 77/70 00:04:29 8875MN

Further Backward from about 60th let's keep mating score in hash of MateFinder maybe even to about 30th but DTM get's more and more unexact (too long) regards

[Hobacle]

u brought a new real analysis "hint" (corechess) into this and im aware now of its strengh....so much thanks that ure so delightful to share your thoughts and investigations, as well as your conclusions and finds !...this "corechess find" is a huge simplification in analysing this position imo and i need time to throw everything over the reling and investigate again, every suggestion between say 95 and 100 would hit my awaitings...thanks very much, Peter !

You mean this one from I.Ivec too, don't you?

http://chess.ultimaiq.net/stockfish.html

It's a very fine branch of SF with it's lesser nullmove- pruning and LMRs.

A specialised MateFinder is missing since Joseph Ellis stopped development (replaced by Crystal), Majkel Novak's HekaStockfish has an option Find Mate and many other UCI options of tactical settings too. Pity no more updates since over half a year now too, as far as I know.

As for DTM, that's so far the best I have since you brought up the new main line with 4.Kb4! instead of Kc4?

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

1. Ka6 Rxd7 2. Nxd7 Kxd7 3. Kb5 Kd6 4. Kb4 Ke5 5. Kc3 Kf4 6. Kd2 Kf3 7. Ke1 Ke3
8. Kf1 Kf3 9. Ba2 Kf4 10. Kf2 Ke5 11. Bc4 Kd4 12. Bf1 Kc3 13. Ke3 Kb4 14. Bg2
Kc3 15. Bd5 Kb4 16. Kd3 Kb5 17. Kd4 Kb4 18. Bc4 Ka3 19. Kc3 Ka4 20. Bb3+ Kb5
21. Bd5 Kc5 22. Bc4 Kc6 23. Kd4 Kd6 24. Bd5 Kd7 25. Kc5 Kc7 26. Bc6 Kc8 27. Kb6
h4 28. Kc5 h3 29. Kd4 Kc7 30. Bf3 h2 31. Ke3 Kd6 32. Kf2 Ke5 33. Kg2 Kf4 34.
Bc6 h1=Q+ 35. Kxh1 Ke5 36. Kg2 Kd4 37. Kf3 Kc5 38. Be8 Kd4 39. Ke2 Kc4 40. Ke3
Kc5 41. Kd3 Kb4 42. Bc6 Kc5 43. Bf3 Kb5 44. Kd4 Kb4 45. Bc6 Kb3 46. Kd3 Kb4 47.
Bd5 Kb5 48. Kc3 Kc5 49. Bc4 Kc6 50. Kd4 Kb6 51. Bf1 Kc6 52. Kc4 Kd6 53. Bg2 Ke5
54. Bb7 Ke6 55. Kd4 Kd6 56. Bd5 Kd7 57. Kc5 Kc7 58. Bc6 Kc8 59. Kb6 f4 60. Kc5
Kc7 61. Be4 Kd7 62. Kd4 Kc7 63. Ke5 Kb6 64. Kxf4 Kc5 65. Ke3 Kc4 66. Bb1 Kc3
67. Bd3 Kb4 68. Kd4 Kb3 69. Be4 Kb4 70. Bc2 Kb5 71. Bd3+ Kb4 72. Bc4 Ka5 73.
Kc5 Ka4 74. Bd5 Ka3 75. Kc4 Kb2 76. Kd3 Ka3 77. Kc3 Ka4 78. Bc6+ Ka5 79. Be8
Ka6 80. Kb4 Kb6 81. Bb5 Kc7 82. Kc5 Kb7 83. Ba4 Ka6 84. Bc6 Ka7 85. Kb5 Kb8 86.
Kb6 Kc8 87. Ba4 Kb8 88. Be8 Qxg7 89. fxg7 Kc8 90. gxh8=Q f6 91. Bc6 Kd8 92.
Qxf6+ Kc8 93. Qf8#

If there isn't much shortcut nor detour in first 30 moves till ...h4, the next 30 to ...f4 will be about ok too probably, at least the last 33 from then onwards should be so for rather sure:

[d]2k3bn/5pPq/2B2PpB/2K2pP1/8/8/8/8 w - - 0 1
Analysis by MateFinder 050320 64:

59.Kb6 f4 60.Bb5 f3 61.Bd3 Kb8 62.Kc5 Kc7 63.Kd4 Kb6 64.Ke3 Kc5 65.Kxf3 Kd4 66.Ke2 Kc3 67.Ke3 Kb2 68.Kd4 Kb3 69.Be4 Kb4 70.Bc2 Kb5 71.Bd3+ Kb4 72.Bc4 Ka5 73.Kc5 Ka4 74.Bd5 Ka3 75.Kc4 Kb2 76.Kd3 Ka3 77.Kc3 Ka4 78.Bc6+ Ka5 79.Kc4 Kb6 80.Kd5 Qxg7 81.Bxg7 Bh7 82.Bf8 Bg8 83.Be7 Ka6 84.Kc5 Bh7 85.Bd6 Bg8 86.Bc7 Ka7 87.Bf3 Bh7 88.Kc6 Bg8 89.Be2 Bh7 90.Bh2 Bg8 91.Kc7 Ka8 92.Bg1 Bh7 93.Bf3#
+- (#35) Depth: 77/70 00:04:29 8875MN

Further Backward from about 60th let's keep mating score in hash of MateFinder maybe even to about 30th but DTM get's more and more unexact (too long) regards

In fact I think the real DTM is probably just a bit less than 110 moves. Here's my winning line of our earlier version:

[pgn][Event "?"]
[Site "?"]
[Date "2021.05.05"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "1-0"]
[FEN "6bn/5pPq/5PpB/5pPp/5K2/5B2/8/6k1 w - - 0 1"]
[SetUp "1"]

1. Ke3 Kf1 2. Bc6 Ke1 3. Bb5 Kd1 4.
Bc4 Kc1 5. Ke2 Kc2 6. Bd3+ Kc3 7. Ke3 Kb3 8. Kd2 Kb4 9. Ba6 Kc5 10. Kd3 Kd5 11.
Bb7+ Kc5 12. Kc3 Kb5 13. Bd5 Kc5 14. Bc4 Kb6 15. Kd4 Ka5 16. Kc5 Ka4 17. Bd5
Ka3 18. Kc4 Kb2 19. Kd3 Ka3 20. Kc3 Ka4 21. Bc6+ Ka5 22. Be8 Ka6 23. Kc4 Kb6
24. Kb4 Kb7 (24... Kc7 $5 25. Kc5 Kb7 26. Bb5 Kc7 27. Bc6) 25. Kc5 Ka6 26. Bc6
Ka5 27. Bb5 h4 28. Be8 Ka6 29. Kd4 Kb6 30. Ke3 Kc7 31. Kf3 Kd8
32. Ba4 Kc7 33. Kg2 Kd6 34. Kh3 Ke5 35. Be8 Kf4 36. Kxh4 Kf3 37. Bc6+ Kf2 38.
Kh3 Ke3 39. Kg3 Ke2 40. Kf4 Kd2 41. Kf3 Kd3 42. Kf2 (42. Bb5+ $5 42... Kd4)
42... Kd4 43. Bb5 Kc3 44. Ke3 Kc2 45. Be2 Kc3 46. Bd3 Kb2 47. Kd2 Kb3
48. Be2 Kb4 49. Kd3 Kc5 50. Bf3 Kb4 51. Bd5 Kb5 52. Kc3 Kc5 53. Bc4 Kb6 54. Kd4
Ka5 55. Kc5 Ka4 56. Bd5 Ka3 57. Kc4 Kb2 58. Kd3 Ka3 59. Kc3 Ka4 60. Bc6+ Ka5
61. Be8 Ka6 62. Kc4 Kb6 63. Kb4 Kc7 64. Kc5 Kb7 65. Bb5 Kc7 66. Bc6 Kc8 67. Kb6
f4 68. Kc5 Kc7 69. Bf3 Kd7 70. Kd5 Kc7 71. Ke4 Kb6 72. Kxf4 Kb5 73. Be2+ Kb4
74. Ke3 Kc3 75. Bd3 Kb2 76. Kd4 Kb3 77. Be4 Kb4 78. Bd5 Kb5 79. Bb3 Kb4 80. Bc4
Ka5 81. Kc5 Ka4 82. Bd5 Ka3 83. Kc4 Kb2 84. Kd3 Ka3 85. Kc3 Ka4 86. Bc6+ Ka5
87. Be8 Ka6 88. Kb4 Kb6 89. Ba4 Kc7 90. Kc5 Kb7 91. Bb5 Kc7 92. Bc6 Kb8 93. Kb6
Kc8 94. Bb5 Kb8 95. Bd7 Ka8 96. Bc6+ Kb8 97. Bb7 Qxg7 98. Bxg7 Bh7 99. Bf8 Bg8
100. Bd6# 1-0

[/pgn]

You can see that after 66. ... Kc8, there's a #34, not a #35.

Almost all questionable moves I'd found were marked in this .pgn but none of them can influence the DTM heavily. And from our current version, it takes about 32 moves to get the position after 24. Kb4 in this .pgn. So if all my moves are right, the real DTM will be 100-24+32=108.

[Spliffjiffer]

just to bring in sth from my side concerning the DTM-question...this was my former mainline i wanted to bring in as my "improvement" until i spotted that 4.Kc4 ?! runs into 4...Qxg7!!....notice that this line is !! WRONG !! because 4.Kc4?! is probably just bad !!?

[pgn][Event "?"]
[Site "?"]
[Date "2021.05.09"]
[Round "?"]
[White "Hobacle, May"]
[Black "Spliffjiffer, Refutation?"]
[Result "1-0"]
[Annotator "Martan,Peter"]
[SetUp "1"]
[FEN "5Nbn/K2P1pPq/2k2PpB/5pPp/8/8/8/1B1r4 w - - 0 1"]
[PlyCount "33"]

1. Ka6 Rxd7 2. Nxd7 Kxd7 3. Kb5 Kd6 4. Kc4 Ke5 5. Kd3 Kf4 6. Ke2 Ke5 (6. ..
Kg3?! is probably just worse) 7. Ke3 Kd5 8. Ba2+ Kc5 9. Kd3 Kb4 10. Kd4 Ka3 11. Bd5 Kb4 12. Bc4
Ka5 13. Kc5 Ka4 14. Bd5 Ka3 15. Kc4 Kb2 16. Kd3 Ka3 17. Kc3 Ka4 18. Bc6+
Ka5 19. Be8 Kb6 20. Kd4 Kb7 21. Kc5 Ka6 (21. .. Ka7!? is the same DTM according to my analysis) 22. Bc6 Ka5 23. Bb5
h4 24. Be8 (24. Bc6!? is not faster by taking the pawn on h4 because the king has to spend 1 more move to take the pawn on h4 and 1 more move is needed to chase the black king away from e5 [according to my analysis]) 24. .. Ka6 25. Bc6 Ka5 26. Bb5 h3 27. Bc6 h2 28. Bh1
Ka4 29. Kd4 Kb4 30. Ke3 Kc4 31. Kf2 Kd4 32. Kg3 Ke3 33. Kxh2 Kf2 34. Bb7
Ke3 35. Kg3 Ke2 36. Kf4 Kd3 37. Bc8 Kd2 38. Ba6 Kc3 39. Ke3 Kc2 40. Bc4 Kc3
41. Bd3 Kb2 42. Kd2 Kb3 43. Ba6 Kb4 44. Kd3 Kc5 45. Bc4 Kb4 46. Kd4 Ka5 47.
Kc5 Ka4 48. Bd5 Ka3 49. Kc4 Kb2 50. Kd3 Ka3 51. Kc3 Ka4 52. Bc6+ Ka5 53.
Be8 Kb6 54. Kd4 Kb7 55. Kc5 Ka7 56. Kb5 Kb7 57. Bc6+ Kc7 58. Kc5 Kc8 59.
Kb6 f4 60. Kc5 Kb8 61. Bf3 Kc7 62. Kd5 Kb6 63. Ke5 Kc5 64. Kxf4 Kc4 65. Ke3
Kc3 66. Be4 Kc4 67. Bc2 Kc3 68. Bd3 Kb3 69. Kd4 Kb2 70. Be4 Kb3 71. Kd3 Kb4
72. Bd5 Kb5 73. Kd4 Kb4 74. Bc4 Ka5 75. Kc5 Ka4 76. Bd5 Ka3 77. Kc4 Kb2 78.
Kd3 Ka3 79. Kc3 Ka4 80. Bc6+ Ka5 81. Be8 Kb6 82. Kd4 Kb7 83. Kc5 Ka7 84.
Kb5 Kb7 85. Bc6+ Kc7 86. Kc5 Kb8 87. Kb6 Kc8 88. Bb5 Kb8 89. Bd7 Ka8 90.
Bc6+ Kb8 91. Bb7 Qxg7 92. Bxg7 Bh7 93. Bf8 Bg8 94. Bd6# 1-0
[/pgn]


edit: posting commentary within the diagram obviously is not so easy as i hoped...the commentary should look like this instead:
(6. ..
Kg3?! is probably just worse)

(21. .. Ka7!? is the same DTM according to my analysis)

(24. Bc6!? is not faster by taking the pawn on h4 because the king has to spend 1 more move to take the pawn on h4 and 1 more move is needed to chase the black king away from e5 [according to my analysis])

[peter]

And from our current version, it takes about 32 moves to get the position after 24. Kb4 in this .pgn. So if all my moves are right, the real DTM will be 100-24+32=108.

[pgn]
[Event "?"]
[Site "?"]
[Date "2021.05.09"]
[Round "?"]
[White "Hobacle, May"]
[Black "Spliffjiffer, 4.Kb4!"]
[Result "1-0"]
[Annotator "Martan,Peter"]
[SetUp "1"]
[FEN "5Nbn/K2P1pPq/2k2PpB/5pPp/8/8/8/1B1r4 w - - 0 1"]
[PlyCount "183"]

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 (
1... Rd6 2. Nxh7) (1... Rxb1 2. d8=Q Ra1+ 3. Qa5 Rxa5+ 4. Kxa5 f4 5. Nxh7 $18)
(1... Rd4 2. Bc2) (1... f4 2. Nxh7) (1... h4 2. Nxh7) 2. Nxd7 Kxd7 3. Kb5 Kd6
4. Kb4 (4. Kc4 $2 Qxg7 (4... Ke5 $2 5. Kd3 Kf4 6. Ke2 Kg3 7. Kf1 Kf3 8. Ba2 Ke3
9. Bd5 Kd4 10. Bh1 {old lines, transposing at 60}) 5. Bxg7 (5. fxg7 $2 f6+ 6.
Kd4 Nf7 7. Ba2 Ke7 8. Bb3 fxg5 9. Bxf7 Kxf7 10. Bxg5 Kxg7) 5... Ke5 6. Kd3 Kf4
7. Bh6 Kg3 8. Ba2 (8. Bc2 f4 $11 {Spliffjiffer}) 8... f4 9. Bd5 Bh7 10. Ke2 Bg8
$11 11. Bf3 Bh7 12. Bd5 Bg8 $11) 4... Ke5 (4... Qxg7 $2 5. fxg7 Ke5 6. gxh8=Q+
Kf4 7. Qd4+ Kg3 8. Bf8 f6 9. Bd6+ Kf3 10. Qd3+ Kf2 11. Qg3+ Ke2 12. Bd3+ Kd1
13. Bf4 fxg5 14. Qg1#) (4... h4 5. Bd3 h3 6. Bf1 h2 7. Bg2) 5. Kc3 Kf4 (5... f4
6. Kd2 f3 7. Ke3) 6. Kd2 Kf3 (6... h4 7. Ke2 h3 8. Kf2 h2 9. Kg2) (6... Kg3 7.
Ke2 f4 (7... Kg4 8. Ke3 Kg3 (8... h4 9. Kf2 h3 10. Bd3 h2 11. Be2+ Kh3 12. Bf3
Kh4 13. Kg2 h1=Q+ 14. Kxh1 $18) 9. Ke2 Kg4 10. Kf2 Kf4 11. Bd3 $18) 8. Be4 h4 (
8... f3+ 9. Bxf3 Kf4 10. Kf2 Kf5 11. Ke3 $18) 9. Bc6 Kg4 (9... h3 10. Bf3 h2
11. Be4 Kg4 (11... Qxg7 $2 12. Bxg7 Kh4 13. Bh6 Bh7 14. Kf2 Kg4 15. Bh1 Kf5 16.
Kg2) 12. Kf2 Kh3 13. Bc6 Kg4 14. Kg2 f3+ 15. Bxf3+ Kf4) 10. Kf2 Kf5 11. Kg2 Ke5
12. Kh3 Kf5 (12... Kd4 13. Kg4 Ke3 14. Bg2 Kf2 15. Bd5 Ke3 16. Kxh4) 13. Bg2
Ke5 14. Kg4 (14. Kxh4 $2 Qxh6+ 15. gxh6 g5+ $11) 14... Kd4 (14... Ke6 15. Kxf4)
15. Kf3 (15. Kxf4 $2 Qxh6 16. gxh6 g5+) 15... Ke5 16. Bh3 Kd4 17. Kxf4 $18) 7.
Ke1 Ke3 (7... f4 8. Ba2 Ke3 9. Kf1 f3 10. Bd5 f2 11. Bh1 Kd2 12. Kxf2) 8. Kf1 (
8. Bc2 Kf3 9. Bb3 Ke3 10. Bd5 Kd4 11. Bb7 Ke3 {Spliff} 12. Kf1 $18) 8... Kf3 9.
Ba2 Kf4 10. Kf2 Ke5 11. Bc4 $18 Kd4 12. Bf1 Kc3 13. Ke3 Kb4 14. Bg2 Kc3 15. Bd5
Kb4 16. Kd3 Kb5 17. Kd4 Kb4 18. Bc4 Ka3 19. Kc3 Ka4 20. Bb3+ Kb5 21. Bd5 Kc5
22. Bc4 Kc6 23. Kd4 Kd6 24. Bd5 Kd7 25. Kc5 Kc7 26. Bc6 Kc8 27. Kb6 h4 28. Kc5
h3 (28... Kc7 $5 29. Bf3 Kd7 30. Kd5 Kc7 31. Kd4 Kb6 32. Ke3 Kc5 33. Kf2 Kd4
34. Kg2 Ke3 35. Ba8 Kf4 36. Bb7 Ke3 (36... Kg4 37. Bc8 Kf4 38. Kh3 Ke5 39. Kxh4
) 37. Kh3 Kf4 38. Bc8 Ke3 39. Kxh4 Kf3 40. Bb7+ Kf2 41. Ba8 Ke2 42. Kg3 Ke3 43.
Bf3 Kd4 44. Be2 Ke4 45. Kf2 Kf4 46. Bf3 Ke5 47. Ke3 Kd6 48. Kd4 Kc7 49. Kc5 Kd7
50. Bd5 Kc7 51. Bc6 Kc8 52. Kb6 f4 53. Kc5 Kc7 54. Bg2 Kd7 55. Kd5 Kc7 56. Ke5
Kb6 57. Kxf4 Kc5 58. Ke3 Kc4 59. Be4 Kc3 60. Bd3 Kb4 61. Kd4 Kb3 62. Be4 Kb4
63. Bc2 Kb5 64. Bd3+ Kb4 65. Bc4 Ka4 66. Kc3 Ka5 67. Be2 Kb6 68. Kc4 Kc6 69.
Bf3+ Kd6 70. Kd4 Ke6 71. Be4 Kd6 72. Bd5 Kc7 73. Kc5 Kd7 74. Ba2 Kc7 75. Bc4
Kd7 76. Bd5 Kc7 77. Bc6 Kb8 78. Kb6 Kc8 79. Ba4 Kb8 80. Bb5 Kc8 81. Bc6 Qxg7
82. fxg7 f6 83. gxh8=Q Kd8 84. Qxf6+ Kc8 85. Qf8#) 29. Kd4 Kc7 30. Bf3 h2 31.
Ke3 Kd6 32. Kf2 Ke5 33. Kg2 Kf4 34. Bc6 h1=Q+ 35. Kxh1 Ke5 36. Kg2 Kd4 37. Kf3
Kc5 38. Be8 Kd4 39. Ke2 Kc4 40. Ke3 Kc5 41. Kd3 Kb4 42. Bc6 Kc5 43. Bf3 Kb5 44.
Kd4 Kb4 45. Bc6 Kb3 46. Kd3 Kb4 47. Bd5 Kb5 48. Kc3 Kc5 49. Bc4 Kc6 50. Kd4 Kb6
51. Bf1 Kc6 52. Kc4 Kd6 53. Bg2 Ke5 54. Bb7 Ke6 55. Kd4 Kd6 56. Bd5 Kd7 57. Kc5
Kc7 58. Bc6 Kc8 59. Kb6 f4 60. Kc5 Kc7 (60... Kb8 {old lines transposing from
4.Kc4? Ke5?} 61. Kd6 Ka7 62. Ke5 Kb6 63. Bf3 Kb5 64. Kxf4 Kb4 65. Be2 Kb3 66.
Ke3 Kc3 67. Bd3 Kb4 68. Kd4 Kb3 69. Be4 Kb4 70. Bd5 Kb5 71. Ba2 Kb4 72. Bc4 Ka5
73. Kc5 Ka4 74. Bd5 Ka3 75. Kc4 Kb2 76. Kd3 Ka3 77. Kc3 Ka4 78. Bc6+ Ka5 79.
Be8 Ka6 80. Kb4 Kb7 81. Kb5 Kc7 82. Kc5 Kb7 83. Bb5 Kc7 84. Bc6 Kd8 85. Kb6 Kc8
86. Bb5 Kb8 87. Bd7 Ka8 88. Bc8 Kb8 89. Bb7 Qxg7 90. Bxg7 Bh7 91. Bf8 Bg8 92.
Bd6#) 61. Be4 Kd7 62. Kd4 Kc7 63. Ke5 Kb6 64. Kxf4 Kc5 65. Ke3 Kc4 66. Bb1 Kc3
67. Bd3 Kb4 68. Kd4 Kb3 69. Be4 Kb4 70. Bc2 Kb5 71. Bd3+ Kb4 72. Bc4 Ka5 73.
Kc5 Ka4 74. Bd5 Ka3 75. Kc4 Kb2 76. Kd3 Ka3 77. Kc3 Ka4 78. Bc6+ Ka5 79. Be8
Ka6 80. Kb4 Kb6 81. Ba4 Kb7 82. Kc5 Ka6 83. Bc6 Ka7 84. Kb5 Kb8 85. Kb6 Kc8 86.
Bb5 Kb8 87. Ba6 Ka8 88. Bc8 Qxh6 89. Bb7+ Kb8 90. gxh6 g5 91. gxh8=Q g4 92.
Qxg8# 1-0[/pgn]

[amchess]

[d]r1b2rk1/pp1n1ppp/4p3/3pP3/1bPNnB1q/2NB2P1/PPQ2P1P/R3K2R b KQ - 0 11

11. ...Qh3?? {All top chess engines
consider this move as their first choice, but it's loosing!} (11. .. Qh5=)
12. O-O-O Nxc3 13. bxc3 Ba3+ 14. Kb1 Nb6 15. Bf1 Qh5 16. Be2 Qg6 17. Bd3
Qh5 18. g4!+- *

[peter]

[d]r1b2rk1/pp1n1ppp/4p3/3pP3/1bPNnB1q/2NB2P1/PPQ2P1P/R3K2R b KQ - 0 11

11. ...Qh3?? {All top chess engines
consider this move as their first choice, but it's loosing!} (11. .. Qh5=)
12. O-O-O Nxc3 13. bxc3 Ba3+ 14. Kb1 Nb6 15. Bf1 Qh5 16. Be2 Qg6 17. Bd3
Qh5 18. g4!+- *

Well, yes, Andrea, but well known already yet too, at least it's like this e.g. in Hiarcs online book and in Cerebellum3Merge.
11...Qh3 being commented with !? at Hiarcs Tournament should rather have ? yet, even if with active probability of 0 anyhow.

There are lots of examples of corr.- games to be found ending up 1-0 after 11...Qh3 (?), 11...Qh5 has much better statistics.

Here is a single example with 11...Qh5:

[pgn][Event "corr WS/SIM/A/6"]
[Site "ICCF"]
[Date "2020.05.02"]
[Round "?"]
[White "Mende, Ingus"]
[Black "Janisch, Manfred"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2444"]
[BlackElo "2447"]
[PlyCount "44"]
[EventDate "2020.??.??"]
[EventType "tourn (corr)"]
[Source "H.Bellmann"]
[SourceDate "2021.10.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. e4 d5 6. e5 Ne4 7. Bd3 c5 8. Nf3
cxd4 9. Nxd4 Nd7 10. Bf4 Qh4 11. g3 Qh5 12. O-O g5 13. cxd5 Bxc3 14. bxc3 exd5
15. Be3 Nxe5 16. f3 Nxd3 17. Qxd3 Nd6 18. g4 Qg6 19. Qxg6+ hxg6 20. Bxg5 f6 21.
Bf4 Nc4 22. Rfb1 b6 1/2-1/2
[/pgn]
And yes, Fish doesn't see 11...Qh3(?) to be inferior fast and well enough regards