White to move and Mate, can your engine find the MATE?

[Chessqueen]

[pgn][Event "White to move and Mate] [Date "2024.02.05"] [Round "?"] [White "Engine-X"] [Black "Engine"] [Result "*"] [BlackElo "????"] [Time "19:24:19"] [WhiteElo "????"] [TimeControl "0"] [SetUp "1"] [FEN "8/p6p/7p/p6p/b2Q3p/K6p/p1r5/rk3n1n w - - 0 1"] [Termination "unterminated"] [PlyCount "0"][/pgn]

[acase]

[pgn][Event "White to move and Mate] [Date "2024.02.05"] [Round "?"] [White "Engine-X"] [Black "Engine"] [Result "*"] [BlackElo "????"] [Time "19:24:19"] [WhiteElo "????"] [TimeControl "0"] [SetUp "1"] [FEN "8/p6p/7p/p6p/b2Q3p/K6p/p1r5/rk3n1n w - - 0 1"] [Termination "unterminated"] [PlyCount "0"][/pgn]

I haven't seen any engines that solve this repetative move mate in 130.

[peter]

I haven't seen any engines that solve this repetative move mate in 130.

Gustav with 1 flight (which it sets with Automatic Parameters too then having about the same time to solution)

Code: Select all

Matt in 130 Zügen, Weiß beginnt, ,   

Lösung gefunden bei folgenden Parametern: 
Fluchtfelder: 1
alle Lösungen suchen / keine Duale in Kurzvarianten anzeigen / Lösungstiefe: 10
Zugzahl unbekannt / Hashtabelle: 8192 MB

Lösezeit:  :           04 : 59,82 min      Zaehler: 14.852839

1.Dd4-d1 Tc2-c1 2.Dd1-d3 Tc1-c2 3.Dd3-f1 Tc2-c1 4.Df1-d3 Tc1-c2 5.Dd3-d1 Tc2-c1 6.Dd1-d2 Tc1-c2 7.Dd2-e1 Tc2-c1 8.De1-e4 Tc1-c2 9.De4-h1 Tc2-c1 10.Dh1-e4 Tc1-c2

Full solution- file's too big for a posting here.
Maybe Huntsman would make it with slow enough Backward too, didn't have the patience, but here's SlowChess (keeping longer lines like these in hash some more quickly backwarding them) after the first 70

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 a6 67. Qe1+ Rc1 68. Qd2 Rc2 69. Qd1+ Rc1 70. Qd3+ Rc2
[d]8/7p/p6p/p7/b7/K2Q4/p1r5/rk6 w - - 0 1 Analysis by SlowChess Blitz 2.9 avx2:

71.De4 h5 72.De1+ Tc1 73.Dd2 Tc2 74.Dd1+ Tc1 75.Dd3+ Tc2 76.De4 h6 77.De1+ Tc1 78.Dd2 Tc2 79.Dd1+ Tc1 80.Dd3+ Tc2 81.De4 h4 82.De1+ Tc1 83.Dd2 Tc2 84.Dd1+ Tc1 85.Dd3+ Tc2 86.De4 h3 87.De1+ Tc1 88.Dd2 Tc2 89.Dd1+ Tc1 90.Dd3+ Tc2 91.De4 h5 92.De1+ Tc1 93.Dd2 Tc2 94.Dd1+ Tc1 95.Dd3+ Tc2 96.De4 h4 97.De1+ Tc1 98.Dd2 Tc2 99.Dd1+ Tc1 100.Dd3+ Tc2 101.De4 h2 102.De1+ Tc1 103.Dd2 Tc2 104.Dd1+ Tc1 105.Dd3+ Tc2 106.De4 h3 107.De1+ Tc1 108.Dd2 Tc2 109.Dd1+ Tc1 110.Dd3+ Tc2 111.De4 h1D 112.Dxh1+ Tc1 113.De4+ Tc2 114.De1+ Tc1 115.Dd2 Tc2 116.Dd1+ Tc1 117.Dd3+ Tc2 118.De4 h2 119.De1+ Tc1 120.Dd2 Tc2 121.Dd1+ Tc1 122.Dd3+ Tc2 123.De4 h1D 124.Dxh1+ Tc1 125.Dh7+ Tc2 126.De4 Lb5 127.De1+ Tc1 128.Dd2 Tc2 129.Dd1+ Tc1 130.Db3#
Tiefe: 29/119 00:00:14 390MN, tb=251598

BTW it's a study from Josef Halumbirek:
https://www.yacpdb.org/#search/OHA2cDdw ... LzEvMS8w/1

[peter]

here's SlowChess (keeping longer lines like these in hash some more quickly backwarding them)

Of course it's not faster, just about as fast and only as for certain lines. Huntsman after Backward of the latest 80 moves, till there Backward works rather quickly, if you don't mind very exact DTM in output neither:
[d]8/p6p/7p/p7/b7/K6p/p7/rkr1Q3 w - - 0 1 Analysis by The Huntsman 1:

51.Dd2 Tc2 52.Dd1+ Tc1 53.Dd3+ Tc2 54.De4 h5 55.De1+ Tc1 56.Dd2 Tc2 57.Dd1+ Tc1 58.Dd3+ Tc2 59.De4 h2 60.De1+ Tc1 61.Dd2 Tc2 62.Dd1+ Tc1 63.Dd3+ Tc2 64.De4 h1D 65.Dxh1+ Tc1 66.De4+ Tc2 67.De1+ Tc1 68.Dd2 Tc2 69.Dd1+ Tc1 70.Dd3+ Tc2 71.De4 h6 72.De1+ Tc1 73.Dd2 Tc2 74.Dd1+ Tc1 75.Dd3+ Tc2 76.De4 h4 77.De1+ Tc1 78.Dd2 Tc2 79.Dd1+ Tc1 80.Dd3+ Tc2 81.De4 a6 82.De1+ Tc1 83.Dd2 Tc2 84.Dd1+ Tc1 85.Dd3+ Tc2 86.De4 h3 87.De1+ Tc1 88.Dd2 Tc2 89.Dd1+ Tc1 90.Dd3+ Tc2 91.De4 h2 92.De1+ Tc1
Weiß setzt Matt.
+- (#84) Tiefe: 70/85 00:00:07 526MN