Mate in 130 moves

Enjoy!

lichess.org/editor/8/p6p/7p/p6p/b2Q3p/K6p/p1r5/rk3n1n w - - 0 1

Let me guess, Otto Blathy?

How are we supposed to know how to find it if not even Stockfish 10 can? xD

I would love to see a solution

Also you say mate, but is it a forced mate or a help mate? I’m assuming forced mate with that many moves.

Stockfish says the position is drawn.. probably help mate?

um ... nope thank you

Found it! You just have to keep forcing black to play Rc1 and Rc2. The trick is finding a way to have the rook on c2 stuck so that black has to move some of the pawns, which each time takes a while!

Browser SF only finds a mate when it's down to the last 8 moves :p

I think I erred somewhere as it's 128, not 130. I always loves these kinds of puzzles when I was little :)

[Variant "From Position"]
[FEN "8/p6p/7p/p6p/b2Q3p/K6p/p1r5/rk3n1n w - - 0 1"]

1. Qd1+ Rc1 2. Qd3+ Rc2 3. Qxf1+ Rc1 4. Qd3+ Rc2
5. Qd1+ Rc1 6. Qd2 Rc2 7. Qe1+ Rc1 8. Qe4+ Rc2
9. Qxh1+ Rc1 10. Qe4+ Rc2 11. Qe1+ Rc1 12. Qd2 Rc2
13. Qd1+ Rc1 14. Qd3+ Rc2 15. Qe4 h2 16. Qe1+ Rc1
17. Qd2 Rc2 18. Qd1+ Rc1 19. Qd3+ Rc2 20. Qe4 h1=Q
21. Qxh1+ Rc1 22. Qe4+ Rc2 23. Qe1+ Rc1 24. Qd2 Rc2
25. Qd1+ Rc1 26. Qd3+ Rc2 27. Qe4 h3 28. Qe1+ Rc1
29. Qd2 Rc2 30. Qd1+ Rc1 31. Qd3+ Rc2 32. Qe4 h2
33. Qe1+ Rc1 34. Qd2 Rc2 35. Qd1+ Rc1 36. Qd3+ Rc2
37. Qe4 h1=Q 38. Qxh1+ Rc1 39. Qe4+ Rc2 40. Qe1+ Rc1
41. Qd2 Rc2 42. Qd1+ Rc1 43. Qd3+ Rc2 44. Qe4 h4
45. Qe1+ Rc1 46. Qd2 Rc2 47. Qd1+ Rc1 48. Qd3+ Rc2
49. Qe4 h3 50. Qe1+ Rc1 51. Qd2 Rc2 52. Qd1+ Rc1
53. Qd3+ Rc2 54. Qe4 h2 55. Qe1+ Rc1 56. Qd2 Rc2
57. Qd1+ Rc1 58. Qd3+ Rc2 59. Qe4 h1=Q 60. Qxh1+ Rc1
61. Qe4+ Rc2 62. Qe1+ Rc1 63. Qd2 Rc2 64. Qd1+ Rc1
65. Qd3+ Rc2 66. Qe4 h5 67. Qe1+ Rc1 68. Qd2 Rc2
69. Qd1+ Rc1 70. Qd3+ Rc2 71. Qe4 h4 72. Qe1+ Rc1
73. Qd2 Rc2 74. Qd1+ Rc1 75. Qd3+ Rc2 76. Qe4 h3
77. Qe1+ Rc1 78. Qd2 Rc2 79. Qd1+ Rc1 80. Qd3+ Rc2
81. Qe4 h2 82. Qe1+ Rc1 83. Qd2 Rc2 84. Qd1+ Rc1
85. Qd3+ Rc2 86. Qe4 h1=Q 87. Qxh1+ Rc1 88. Qe4+ Rc2
89. Qe1+ Rc1 90. Qd2 Rc2 91. Qd1+ Rc1 92. Qd3+ Rc2
93. Qe4 h6 94. Qe1+ Rc1 95. Qd2 Rc2 96. Qd1+ Rc1
97. Qd3+ Rc2 98. Qe4 h5 99. Qe1+ Rc1 100. Qd2 Rc2
101. Qd1+ Rc1 102. Qd3+ Rc2 103. Qe4 h4 104. Qe1+ Rc1
105. Qd2 Rc2 106. Qd1+ Rc1 107. Qd3+ Rc2 108. Qe4 h3
109. Qe1+ Rc1 110. Qd2 Rc2 111. Qd1+ Rc1 112. Qd3+ Rc2
113. Qe4 h2 114. Qe1+ Rc1 115. Qd2 Rc2 116. Qd1+ Rc1
117. Qd3+ Rc2 118. Qe4 h1=Q 119. Qxh1+ Rc1 120. Qh7+ Rc2
121. Qe4 a6 122. Qh1+ Rc1 123. Qh7+ Rc2 124. Qe4 Bb3
125. Qe1+ Rc1 126. Qd2 Bc2 127. Qc3 a4 128. Qb2#