MadChess 3.2 Released

[Chessqueen]

2nd game I decided to set the strength limit to 1450 and I just simply outplayed it with the Clemenz Opening 1.h3..... NO I will NOT try to beat it at 1600 , since I am getting too old and this last game was hard enough for me which reminds me when I was younger playing at around 1450 Elo. At this age of 65 I am NOT getting better

[pgn][Event "Computer chess game"] [Site "DESKTOP-4QNC0GS"] [Date "2024.02.01"] [Round "?"] [White "ChessQueen"] [Black "MadChess.Engine"] [Result "1-0"] [BlackElo "1450"] [ECO "A00"] [Opening "Clemenz (Mead-Basman-de Klerk-Welling) Opening"] [Time "23:53:18"] [WhiteElo "????"] [TimeControl "600+3"] [Termination "normal"] [PlyCount "56"] [WhiteType "human"] [BlackType "program"] 1. h3 f5 2. Nc3 e5 3. e4 Qf6 4. exf5 Qxf5 5. Bd3 Qe6 6. Qh5+ g6 7. Qe2 Qd6 8. Nb5 Qc5 9. b4 Qe7 10. Nxc7+ Kd8 11. Nxa8 Nf6 12. Bb2 d6 13. Nf3 Be6 14. Bb5 Kc8 15. Qe3 Nc6 16. Bxc6 bxc6 17. d4 Nd5 18. Qe2 Qb7 19. dxe5 Kb8 20. exd6 Qxb4+ 21. Nd2 Nf4 22. Qe5 Rg8 23. Nc7 Bc8 24. Ba3 Nxg2+ 25. Kf1 Bxd6 26. Qxd6 Qxd6 27. Bxd6 Nh4 28. Rb1+ Bb7 29. Ne4 Nf3 30. Ne6+ Ka8 31. Ke2 Nd4+ {Black resigns} *[/pgn]

[Dann Corbit]

It's always a good day when there is a new version of MadChess.

[Chessqueen]

3rd game I decided to set the strength limit to 1550 and I got a hard fought draw with the Clemenz Opening 1.h3..... NO I will NOT try to beat it at 1600 , since I am getting too old and this last game was hard enough for me which reminds me when I was younger playing at around 1450 to 1500 Elo. At this age of 65 I am NOT getting better

[pgn][Event "Computer chess game"] [Site "DESKTOP-4QNC0GS"] [Date "2024.02.01"] [Round "?"] [White "ChessQueen"] [Black "MadChess.Engine"] [Result "1/2-1/2"] [BlackElo "1550"] [ECO "A00"] [Opening "Clemenz (Mead-Basman-de Klerk-Welling) Opening"] [Time "23:53:18"] [WhiteElo "????"] [TimeControl "600+3"] [Termination "normal"] [PlyCount "56"] [WhiteType "human"] [BlackType "program"] 1. h3 e5 2. e4 Nf6 3. Nc3 Bb4 4. a3 Bxc3 5. dxc3 O-O 6. Nf3 Re8 7. Bg5 d6 8. Bc4 Nbd7 9. Bb5 a5 10. Qe2 c6 11. Bd3 Qb6 12. O-O-O h6 13. Be3 Nc5 14. Bxc5 Qxc5 15. c4 Ra7 16. Rhe1 b6 17. Qe3 Kf8 18. Bf1 Qxe3+ 19. Rxe3 Ke7 20. Bd3 a4 21. Nh4 g5 22. Nf5+ Bxf5 23. exf5 g4 24. Be2 gxh3 25. Rxh3 Rd7 26. Rxh6 Ra8 27. Re1 e4 28. Bd3 Ra5 29. Rhh1 Re5 30. Bxe4 Rxe4 31. Rxe4+ Nxe4 32. Re1 d5 33. f3 Kf6 34. fxe4 Re7 35. Kd2 Rxe4 36. Rxe4 dxe4 37. g4 Ke5 38. Ke3 b5 39. cxb5 cxb5 40. f6 Kxf6 41. Kxe4 Kg5 42. Kf3 f5 43. gxf5 Kxf5 44. Ke3 Ke5 45. Kd3 Kd5 46. Kc3 Kc5 47. b3 axb3 48. Kxb3 Kd6 49. Kb4 Kc6 50. Kc3 Kb6 51. Kd2 Kc5 52. Kd3 Kb6 53. Kc3 Ka6 54. Kb4 Kb6 55. c3 Kc6 56. a4 bxa4 57. c4 Kb6 58. Kxa4 Kc7 59. Kb5 Kb7 60. c5 Kc7 61. Kc4 Kd8 62. c6 Kc7 63. Kc5 Kc8 64. Kb6 Kb8 65. Ka5 Kc7 66. Kb5 Kc8 67. Kc5 Kc7 68. Kd5 Kc8 69. Kd6 Kd8 70. c7+ Kc8 71. Kc6 {Stalemate} 1/2-1/2[/pgn]

[Chessqueen]

I just realized that on the previous game I missed Mate in 22 after this move 50. Kc3 Kb6? Oh well I am NOT a Master like Ajedrecista or Mr: Kauman
[pgn][Event "Computer chess game"] [Date "2024.02.02"] [Round "?"] [White "ChessQueen"] [Black "MadChess.Engine"] [Result "*"] [BlackElo "1550"] [ECO "A00"] [Opening "Clemenz (Mead-Basman-de Klerk-Welling) Opening"] [Time "09:53:42"] [WhiteElo "????"] [TimeControl "600+5"] [Termination "unterminated"] [PlyCount "104"] [WhiteType "Human"] [BlackType "program"] 1. h3 e5 2. e4 Nf6 3. Nc3 Bb4 4. a3 Bxc3 5. dxc3 O-O 6. Nf3 Re8 7. Bg5 d6 8. Bc4 Nbd7 9. Bb5 a5 10. Qe2 c6 11. Bd3 Qb6 12. O-O-O h6 13. Be3 Nc5 14. Bxc5 Qxc5 15. c4 Ra7 16. Rhe1 b6 17. Qe3 Kf8 18. Bf1 Qxe3+ 19. Rxe3 Ke7 20. Bd3 a4 21. Nh4 g5 22. Nf5+ Bxf5 23. exf5 g4 24. Be2 gxh3 25. Rxh3 Rd7 26. Rxh6 Ra8 27. Re1 e4 28. Bd3 Ra5 29. Rhh1 Re5 30. Bxe4 Rxe4 31. Rxe4+ Nxe4 32. Re1 d5 33. f3 Kf6 34. fxe4 Re7 35. Kd2 Rxe4 36. Rxe4 dxe4 37. g4 Ke5 38. Ke3 b5 39. cxb5 cxb5 40. f6 Kxf6 41. Kxe4 Kg5 42. Kf3 f5 43. gxf5 Kxf5 44. Ke3 Ke5 45. Kd3 Kd5 46. Kc3 Kc5 47. b3 axb3 48. Kxb3 Kd6 49. Kb4 Kc6 50. Kc3 Kb6[/pgn]

[Chessqueen]

I just realized that on the previous game I missed Mate in 22 after this move 50. Kc3 Kb6? Oh well I am NOT a Master like Ajedrecista or Mr. Kaufman. Anyway, I do NOT feel bad because NOT even Obsidian10 can find the mate in less than 10 minutes

FEN: 8/8/1k6/1p6/8/P1K5/2P5/8 w - - 5 51

Obsidian10-avx2:
1 00:00 39 39k +1.55 Kc3-b4
2 00:00 126 126k +1.37 Kc3-d4 Kb6-a5
3 00:00 451 451k +1.76 Kc3-d4 Kb6-c6 Kd4-e5
4 00:00 901 901k +1.36 Kc3-d4 Kb6-c6 Kd4-e5 Kc6-c5
5 00:00 1k 1,144k +1.42 Kc3-d4 Kb6-c6 Kd4-e5 Kc6-c5
6 00:00 3k 3,027k +1.21 Kc3-b4 Kb6-c6 a3-a4 b5xa4 Kb4xa4 Kc6-b7
7 00:00 4k 4,078k +1.44 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5
8 00:00 12k 3,886k +1.36 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 b5-b4 a3-a4 Kc5-c6 a4-a5 Kc6-c7
9 00:00 17k 4,174k +1.52 Kc3-b4 Kb6-a6 a3-a4 b5xa4 Kb4xa4 Ka6-b6 Ka4-b4
10 00:00 28k 4,675k +1.49 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6 Ka6-a7 Kc6-c7 c2-c3 Kc7-c6 Ka7-a6 Kc6-c5 Ka6-a5
11 00:00 32k 5,377k +1.63 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6 Ka6-a7 Kc6-c7 c2-c3 Kc7-c6 Ka7-a6
12 00:00 41k 5,156k +1.81 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6 c2-c3 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-b6
13 00:00 49k 5,421k +2.18 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6 c2-c3 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6
14 00:00 54k 5,399k +2.47 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6 c2-c3 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-b6 Kc4xc3 Kb6xb5 Kc3-d4 a3-a4
15 00:00 65k 5,456k +2.77 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-c6 Kc4xc3 Kc6xb5 Kc3-b3 a3-a4
16 00:00 85k 5,680k +3.15 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-c6 Kc4xc3 Kc6xb5 Kc3-b3 a3-a4
17 00:00 116k 5,817k +3.48 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5
18 00:00 146k 5,837k +4.04 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5 Kc3-c2 a3-a4
19 00:00 216k 5,843k +4.65 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4-b3 Kc6xb5 Kb3xa3 c3-c4 Ka3-b3 c4-c5
20 00:00 333k 6,160k +5.23 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4-b3 Kc6xb5 Kb3xa3 c3-c4 Ka3-b3 c4-c5 Kb3-c3 c5-c6
21 00:00 546k 6,347k +6.20 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-e6 Kb6xb5 Ke6-d6 a3-a4 Kd6-c7 a4-a5 Kc7-b7 a5-a6+
22 00:00 710k 6,341k +6.87 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-e6 Kb6xb5 Ke6-d6 a3-a4 Kd6-c7 a4-a5 Kc7-b7 a5-a6+ Kb7-a7 c3-c4 Ka7-a8 Kb5-b6 Ka8-b8 c4-c5
23 00:00 886k 6,423k +8.01 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-e6 Kb6xb5 Ke6-d6 a3-a4 Kd6-c7 a4-a5 Kc7-b7 a5-a6+ Kb7-a7 c3-c4 Ka7-b8 Kb5-b6
24 00:00 1,525k 6,379k +9.10 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-e5 Kb6-c6 Ke5-e6 Kc6xb5 Ke6-d6 Kb5-b6 Kd6-e6 Kb6-c6 Ke6-e5
25 00:00 2,841k 7,015k +10.69 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-e4 Kb6-c6 Ke4-e3 Kc6xb5 Ke3-d3 a3-a4 Kd3-c2 c3-c4 Kc2-b3 c4-c5 Kb3-a2
26 00:01 7,770k 7,262k +12.96 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-e4 Kb6-c6 Ke4-f4 Kc6xb5 Kf4-g4 a3-a4 Kg4-h4 Kb5-b6 Kh4-h3 a4-a5
27 00:02 20,814k 8,118k +13.68 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d6 Kb7-b6 b5-b4 a3xb4 Kd6-e6 b4-b5 Ke6-d6 Kb6-a6 Kd6-d5 b5-b6 Kd5-c4 b6-b7 Kc4xc3 Ka6-b5
28 00:04 34,657k 8,265k +14.60 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-b6 Kc4xc3 Kb6xb5 Kc3-c2 a3-a4 Kc2-d3 a4-a5 Kd3-d4 Kb5-b6 Kd4-e5 a5-a6 Ke5-d5 a6-a7 Kd5-d6 a7-a8Q Kd6-e7 Qa8-f3 Ke7-d7 Qf3-c6+ Kd7-e7 Qc6-a8
29 00:05 45,743k 8,451k +15.05 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-b6 Kc4xc3 Kb6xb5 Kc3-c2 a3-a4 Kc2-d3 a4-a5 Kd3-e3 a5-a6 Ke3-f2 a6-a7 Kf2-f3 a7-a8Q+ Kf3-f4 Kb5-b6 Kf4-g5 Qa8-c6 Kg5-h4
30 00:05 47,530k 8,442k +15.07 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-c6 Kc4-b3 Kc6xb5 Kb3xa3 c3-c4 Ka3-b3 c4-c5 Kb3-c3 c5-c6 Kc3-d4 c6-c7 Kd4-e5 c7-c8Q Ke5-f4 Qc8-c3 Kf4-g5 Qc3-c4 Kg5-f6 Qc4-c6+ Kf6-g7 Kb5-c5 Kg7-f7 Qc6-b7+ Kf7-e6 Qb7-g7 Ke6-f5
31 00:05 49,584k 8,453k +15.10 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-c6 Kc4-b3 Kc6xb5 Kb3xa3 c3-c4 Ka3-b3 c4-c5 Kb3-c3 Kb5-b6 Kc3-d4 c5-c6 Kd4-e4 c6-c7 Ke4-d3 c7-c8Q Kd3-e2 Qc8-g4+ Ke2-e1 Qg4-g2 Ke1-d1 Kb6-c5 Kd1-c1 Qg2-e4 Kc1-b2 Qe4-b7+ Kb2-a1 Kc5-c6 Ka1-a2 Kc6-d6
32 00:06 53,102k 8,453k +15.14 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-c6 Kc4-b3 Kc6xb5 Kb3xa3 c3-c4 Ka3-b3 c4-c5 Kb3-c3 Kb5-b6 Kc3-d4 c5-c6 Kd4-c3 Kb6-c5 Kc3-c2 c6-c7 Kc2-b1 c7-c8Q Kb1-a1 Qc8-b7 Ka1-a2 Qb7-d5+ Ka2-b1 Qd5-a8 Kb1-b2 Qa8-h1 Kb2-c2 Qh1-b7 Kc2-d3 Kc5-b5 Kd3-d2 Qb7-a8 Kd2-e2 Kb5-c5
33 00:06 55,494k 8,468k +15.19 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-b6 Kc4-b3 Kb6xb5 Kb3xa3 c3-c4 Ka3-b3 c4-c5 Kb3-c3 Kb5-b6 Kc3-d4 c5-c6 Kd4-c3 c6-c7 Kc3-c2 Kb6-c5 Kc2-b1 c7-c8Q Kb1-c2 Kc5-c6 Kc2-d3 Kc6-d5 Kd3-e3 Qc8-c2 Ke3-f3 Qc2-h2 Kf3-g4 Qh2-g2+ Kg4-f4 Kd5-c5 Kf4-e3 Kc5-b5
34 00:08 76,252k 8,596k +15.46 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-b6 Kc4-b3 Kb6xb5 Kb3xa3 c3-c4 Ka3-b3 c4-c5 Kb3-c3 Kb5-b6 Kc3-d4 c5-c6 Kd4-c3 c6-c7 Kc3-c2 Kb6-c5 Kc2-d3 c7-c8Q Kd3-e2 Kc5-d5 Ke2-f3 Qc8-c2 Kf3-f4 Qc2-g2 Kf4-f5 Qg2-f3+ Kf5-g5 Kd5-e6 Kg5-h6 Qf3-c3 Kh6-g5
35 00:13 113,920k 8,703k +15.87 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-c6 Kc4-b3 Kc6xb5 Kb3xa3 c3-c4 Ka3-b3 c4-c5 Kb3-c3 Kb5-b6 Kc3-d4 c5-c6 Kd4-c3 c6-c7 Kc3-c2 Kb6-b5 Kc2-d3 c7-c8Q Kd3-d2 Qc8-a8 Kd2-e2 Qa8-g2+ Ke2-e3 Kb5-c5 Ke3-f4 Kc5-d5 Kf4-f5 Qg2-f3+ Kf5-g6 Kd5-e6 Kg6-h7 Qf3-f6
36 00:23 203,832k 8,686k +17.66 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-c6 Kc4-b3 Kc6xb5 Kb3xa3 c3-c4 Ka3-b3 c4-c5 Kb3-c3 Kb5-b6 Kc3-d4 c5-c6 Kd4-c3 c6-c7 Kc3-d4 c7-c8Q Kd4-e5 Qc8-b7 Ke5-f5 Qb7-f3+ Kf5-g5 Kb6-b5 Kg5-h6 Kb5-c6 Kh6-g5 Kc6-d6 Kg5-g6 Kd6-e6 Kg6-g7 Qf3-f6+
37 00:38 336,617k 8,691k +25.08 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-c6 Kc4-d3 Kc6xb5 Kd3-e3 a3-a4 Ke3-f4 c3-c4 Kf4-g5 a4-a5 Kg5-f4 a5-a6 Kf4-g5 a6-a7 Kg5-h6 a7-a8Q Kh6-g6 Kb5-b6 Kg6-f7 c4-c5 Kf7-g6 Qa8-d5 Kg6-g7 c5-c6 Kg7-h8 c6-c7
38 01:00 522,208k 8,681k +27.63 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-c6 Kc4-d3 Kc6xb5 Kd3-e3 c3-c4 Ke3-e4 a3-a4 Ke4-d3 a4-a5 Kd3-d4 a5-a6 Kd4-e5 Kb5-b6 Ke5-d6 a6-a7 Kd6-e7 a7-a8Q Ke7-f6 c4-c5 Kf6-g6 c5-c6 Kg6-f6 c6-c7 Kf6-e5 c7-c8Q
39 01:13 636,506k 8,678k +28.47 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-c6 Kc4-d3 Kc6xb5 Kd3-e3 a3-a4 Ke3-f4 c3-c4 Kf4-g5 a4-a5 Kg5-f4 Kb5-b6 Kf4-e4 a5-a6 Ke4-e5 c4-c5 Ke5-f6 a6-a7 Kf6-f5 a7-a8Q Kf5-g6 Qa8-b7 Kg6-f6 c5-c6 Kf6-f5 Kb6-b5 Kf5-e6 c6-c7 Ke6-f5 c7-c8Q+ Kf5-f4
40 01:35 826,049k 8,675k +29.42 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-b6 Kc4-d3 Kb6xb5 Kd3-e3 a3-a4 Ke3-f4 a4-a5 Kf4-g5 c3-c4 Kg5-f4 a5-a6 Kf4-e5 Kb5-b6 Ke5-d6 c4-c5+ Kd6-e7 a6-a7 Ke7-f6 a7-a8Q Kf6-e6 Qa8-f3 Ke6-e7 Qf3-d5 Ke7-f6 Kb6-b5 Kf6-e7 Qd5-d6+ Ke7-e8 c5-c6 Ke8-f7 Kb5-b6 Kf7-g7 Qd6-d5
41 02:31 1,319,588k 8,736k +32.10 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 b5-b4 c3xb4+ Kc5-d4 Kb7-c7 Kd4-c3 Kc7-c6 Kc3-b3 b4-b5 Kb3-c4 b5-b6 Kc4-b3 b6-b7 Kb3-c4 a3-a4 Kc4-c3 b7-b8Q Kc3-c4 Qb8-c8 Kc4-d3 Kc6-b5 Kd3-d2 a4-a5 Kd2-e3 Kb5-b6
42 05:14 2,731,554k 8,672k +60.18 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d6 Kb7-b6 b5-b4 a3xb4 Kd6-e5 Kb6-a6 Ke5-f4 b4-b5 Kf4-g4 b5-b6 Kg4-g5 b6-b7 Kg5-f6 Ka6-a7 Kf6-f7 b7-b8Q Kf7-f6 Qb8-d6+ Kf6-f5 Ka7-a6 Kf5-g4 Qd6-b8 Kg4-f5 c3-c4 Kf5-g4 c4-c5 Kg4-g5 c5-c6 Kg5-g6 Qb8-d6+ Kg6-h5 Qd6-d5+
43 07:34 3,942,096k 8,675k +75.95 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c4 Ka5-b6 Kc4-d3 Kb6xb5 Kd3-e3 a3-a4 Ke3-e2 a4-a5 Ke2-d2 Kb5-b6 Kd2xc3 a5-a6 Kc3-d3 Kb6-c5 Kd3-e3 a6-a7 Ke3-f4 a7-a8Q Kf4-g3 Kc5-b6 Kg3-f4 Kb6-b5 Kf4-g3 Kb5-c5 Kg3-f4 Qa8-c8 Kf4-g5 Kc5-b5 Kg5-g6 Kb5-c6 Kg6-f7 Kc6-c5 Kf7-g6 Qc8-b7 Kg6-g5 Qb7-f3 Kg5-g6 Kc5-d6 Kg6-g5 Kd6-e6 Kg5-g6
44 07:38 3,972,387k 8,664k +81.50 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5 Kc3-d4 a3-a4 Kd4-e5 Kb5-b6 Ke5-f5 a4-a5 Kf5-g5 a5-a6 Kg5-g4 a6-a7 Kg4-f3 a7-a8Q+ Kf3-g3 Kb6-b5 Kg3-f4 Qa8-b8+ Kf4-e3 Kb5-a6 Ke3-e4 Qb8-a8+ Ke4-f4 Ka6-b5 Kf4-g4 Kb5-c5 Kg4-f4 Qa8-g2 Kf4-f5 Kc5-b6 Kf5-f6 Qg2-g4 Kf6-f7 Kb6-c5 Kf7-f6 Kc5-d5 Kf6-f7 Qg4-c8 Kf7-g6 Qc8-c3 Kg6-g5 Qc3-f3 Kg5-h6 Qf3-f6+ Kh6-h5
45 08:07 4,210,413k 8,642k +84.93 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4-b3 Kc6xb5 Kb3-c2 a3-a4 Kc2xc3 a4-a5 Kc3-c2 a5-a6 Kc2-d2 a6-a7 Kd2-e3 Kb5-c5 Ke3-f4 Kc5-b6 Kf4-f5 a7-a8Q Kf5-g5 Qa8-b8 Kg5-h4 Kb6-c5 Kh4-g5 Qb8-c8 Kg5-f4 Kc5-b6 Kf4-g5 Qc8-a8 Kg5-g6 Kb6-c7 Kg6-g7 Kc7-c6 Kg7-g6 Qa8-b8 Kg6-f6 Kc6-d6 Kf6-g7 Qb8-c8 Kg7-f7 Qc8-a8 Kf7-g6 Qa8-b7 Kg6-f5 Qb7-f3+ Kf5-g6 Kd6-c6 Kg6-g5 Kc6-c5 Kg5-h4
46 08:24 4,338,872k 8,606k +94.23 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c7 Ka6xb5 Kc7-b7 a3-a4 Kb7-c7 c3-c4 Kc7-b7 a4-a5 Kb7-a7 a5-a6 Ka7-b8 Kb5-b6 Kb8-a8 c4-c5 Ka8-b8 a6-a7+ Kb8-a8 Kb6-b5 Ka8xa7 c5-c6 Ka7-b8 Kb5-b6 Kb8-c8 c6-c7 Kc8-d7 Kb6-b7 Kd7-e7 c7-c8Q Ke7-f7 Kb7-c6 Kf7-g6 Kc6-b6 Kg6-g5 Qc8-a8 Kg5-g6 Qa8-b8 Kg6-f5 Kb6-b5 Kf5-f6 Kb5-a6 Kf6-g7 Qb8-d6 Kg7-f7 Ka6-b5 Kf7-g7 Kb5-c5 Kg7-f7 Kc5-c6 Kf7-e8 Qd6-b8+ Ke8-e7 Kc6-b6 Ke7-e6
47 10:01 5,143,827k 8,553k +86.60 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-d6 Ka5xb5 Kd6-c7 c2-c3 Kc7-b7 a3-a4 Kb7-c7 c3-c4 Kc7-b7 c4-c5 Kb7-c7 c5-c6 Kc7-d6 Kb5-b6 Kd6-e5 c6-c7 Ke5-e4 c7-c8Q Ke4-f4 a4-a5 Kf4-e5 Qc8-b8+ Ke5-f6 Kb6-c6 Kf6-f5 Qb8-c8+ Kf5-g5 Qc8-a8 Kg5-g6 Kc6-b5 Kg6-g5 Kb5-b6 Kg5-f4 Qa8-b8+ Kf4-g4 Qb8-d8 Kg4-g3 Qd8-d5 Kg3-h4 Kb6-c6 Kh4-g3 Qd5-b3+ Kg3-f2 Qb3-b8 Kf2-f1 a5-a6 Kf1-e2 Qb8-d6 Ke2-e3 a6-a7 Ke3-e2 Qd6-d5 Ke2-e3 a7-a8Q Ke3-e2 Qd5-c4+

[Chessqueen]

Stockfish found the Mate in 22 almost immediately
FEN: 8/8/1k6/1p6/8/P1K5/2P5/8 w - - 5 51

Stockfish-windows-x86-64-avx2x [001]:
NNUE evaluation using nn-5af11540bbfe.nnue enabled
1/1 00:00 33 33k +1.01 Kc3-b4
2/2 00:00 90 90k +1.01 Kc3-b4
3/2 00:00 140 140k +1.97 Kc3-b4
4/3 00:00 196 196k +1.97 Kc3-b4 Kb6-c6
5/4 00:00 428 428k +2.53 Kc3-b4 Kb6-a6
6/5 00:00 798 798k +1.86 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5
7/6 00:00 886 886k +1.86 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6
8/7 00:00 1k 699k +2.63 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6
9/9 00:00 2k 895k +2.63 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6 c2-c3 Kc6-c5
10/10 00:00 2k 983k +2.72 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6 c2-c3 Kc6-c5 Ka6-b7
11/15 00:00 6k 2,015k +4.35 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6
12/16 00:00 9k 2,985k +4.35 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6
13/15 00:00 13k 3,279k +5.54 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5
14/17 00:00 19k 3,817k +5.53 Kc3-b4 Kb6-a6 a3-a4 b5xa4 Kb4xa4 Ka6-b6 Ka4-b4 Kb6-c6 Kb4-c4 Kc6-d6 Kc4-b5 Kd6-c7 Kb5-c5 Kc7-d7 c2-c3
15/22 00:00 48k 4,363k +6.40 Kc3-b4 Kb6-a6 a3-a4 b5xa4 Kb4xa4 Ka6-b6 Ka4-b4 Kb6-c6 Kb4-c4 Kc6-b6 Kc4-d5 Kb6-c7 Kd5-c5 Kc7-b7 Kc5-d6 Kb7-a6 Kd6-c6 Ka6-a5 c2-c4
16/18 00:00 143k 5,091k +7.45 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 b5-b4 c3xb4+ Ka5-b5 Kb7-a7 Kb5-c4 Ka7-a6 Kc4-b3
17/25 00:00 353k 5,603k +7.92 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 b5-b4 c3xb4+ Ka5-b5 Kb7-a7 Kb5-c4 Ka7-a6 Kc4-c3 b4-b5 Kc3-b2 b5-b6 Kb2-c3 Ka6-b5
18/25 00:00 587k 6,309k +35.75 Kc3-b4 Kb6-c6 Kb4-a5 b5-b4 a3xb4 Kc6-d5 b4-b5 Kd5-d4 c2-c3+ Kd4xc3 b5-b6 Kc3-c2 Ka5-a6
19/22 00:00 648k 6,292k +9.14 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d6 Kb7-b6 Kd6-e6 Kb6xb5 Ke6-f5 a3-a4 Kf5-g5 a4-a5
20/20 00:00 658k 6,270k +35.76 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 b5-b4 c3xb4+ Kc5-b5 Kb7-c7 Kb5-a4 Kc7-c6 Ka4xa3 b4-b5 Ka3-b4 b5-b6
21/22 00:00 662k 6,249k +35.76 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-b6 Kc4xc3 Kb6xb5 Kc3-c2 Kb5-b4 Kc2-d3 a3-a4 Kd3-e3 a4-a5 Ke3-f3 a5-a6
22/23 00:00 674k 6,241k +35.76 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-b6 Kc4xc3 Kb6xb5 Kc3-d3 a3-a4 Kd3-e3 a4-a5 Ke3-f4 a5-a6 Kf4-g4 Kb5-b6 Kg4-h3
23/23 00:00 675k 6,253k +35.76 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-b6 Kc4xc3 Kb6xb5 Kc3-d3 a3-a4 Kd3-e2 a4-a5 Ke2-e3 Kb5-b4 Ke3-f3 a5-a6 Kf3-g4 Kb4-b5
24/29 00:00 684k 6,272k +35.76 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-c4 Kb7-c6 Kc4xc3 Kc6xb5 Kc3-d3 a3-a4 Kd3-e4 a4-a5 Ke4-f5 a5-a6 Kf5-g4 a6-a7 Kg4-g3 Kb5-b6 Kg3-g2 a7-a8Q+ Kg2-g3
25/28 00:00 747k 6,331k +35.17 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c4 Ka5-a6 Kc4xc3 Ka6xb5 Kc3-d3 a3-a4 Kd3-e2 a4-a5 Ke2-f3 a5-a6 Kf3-g4 a6-a7 Kg4-g3 a7-a8Q Kg3-g4
26/29 00:00 894k 6,525k +35.04 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c4 Ka5-a6 Kc4xc3 Ka6xb5 Kc3-d3 a3-a4 Kd3-d4 Kb5-b6 Kd4-e4 a4-a5 Ke4-f3 a5-a6 Kf3-g3 a6-a7 Kg3-g4 a7-a8Q Kg4-h3 Qa8-f3+ Kh3-h4 Kb6-b5
27/28 00:00 973k 6,574k +35.39 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c4 Ka5-b6 Kc4xc3 Kb6xb5 Kc3-d3 a3-a4 Kd3-e2 Kb5-b6 Ke2-f3 a4-a5 Kf3-f4 a5-a6 Kf4-g4 a6-a7 Kg4-h4 a7-a8Q Kh4-g4 Kb6-b5 Kg4-h3 Qa8-f3+ Kh3-h4
28/29 00:00 991k 6,565k +35.39 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4-b3 Kb6xb5 Kb3xc3 a3-a4 Kc3-d4 a4-a5 Kd4-e4 Kb5-b6 Ke4-f3 Kb6-c5 Kf3-g3 a5-a6 Kg3-f3 a6-a7 Kf3-g3 a7-a8Q Kg3-g4 Kc5-b6
29/29 00:00 1,017k 6,558k +35.39 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4-b3 Kb6xb5 Kb3xc3 a3-a4 Kc3-d4 a4-a5 Kd4-e4 a5-a6 Ke4-f4 a6-a7 Kf4-g4 a7-a8Q Kg4-h5 Qa8-f3+ Kh5-g6 Kb5-c5 Kg6-h6 Kc5-b6
30/30 00:00 1,102k 6,597k +35.39 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4-b3 Kb6xb5 Kb3xc3 a3-a4 Kc3-d4 a4-a5 Kd4-e4 a5-a6 Ke4-f4 a6-a7 Kf4-g4 a7-a8Q Kg4-f4 Kb5-b6 Kf4-g3
31/31 00:00 1,171k 6,614k +35.39 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4-b3 Kb6xb5 Kb3xc3 a3-a4 Kc3-d4 a4-a5 Kd4-e4 a5-a6 Ke4-f4 a6-a7 Kf4-g4 a7-a8Q Kg4-f4 Kb5-b6 Kf4-g4 Qa8-g2+ Kg4-h4 Kb6-c5 Kh4-h5 Qg2-a8
32/33 00:00 1,272k 6,624k +35.39 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4-b3 Kb6xb5 Kb3xc3 a3-a4 Kc3-d4 a4-a5 Kd4-e4 a5-a6 Ke4-f4 a6-a7 Kf4-g4 a7-a8Q Kg4-g5 Qa8-g2+ Kg5-h5 Qg2-f3+ Kh5-h6 Kb5-b6 Kh6-g6 Qf3-g2+ Kg6-h5 Qg2-a8
33/33 00:00 1,335k 6,676k +35.39 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4-b3 Kb6xb5 Kb3xc3 a3-a4 Kc3-d4 a4-a5 Kd4-e4 a5-a6 Ke4-f4 a6-a7 Kf4-g4 a7-a8Q Kg4-g5 Qa8-g2+ Kg5-h5 Kb5-a5 Kh5-h6 Qg2-a8 Kh6-h5 Ka5-b6 Kh5-g4
34/36 00:00 1,557k 6,828k +35.39 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4-b3 Kb6xb5 Kb3xc3 a3-a4 Kc3-d4 a4-a5 Kd4-e4 a5-a6 Ke4-f4 a6-a7 Kf4-g4 a7-a8Q Kg4-g5 Qa8-g2+ Kg5-h6 Kb5-c6 Kh6-h5 Kc6-b6 Kh5-h4 Kb6-b5 Kh4-h5 Kb5-a5 Kh5-h6 Qg2-a8 Kh6-h5
35/39 00:00 1,887k 6,990k +35.39 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4-b3 Kb6xb5 Kb3xc3 a3-a4 Kc3-d4 a4-a5 Kd4-e4 a5-a6 Ke4-f4 a6-a7 Kf4-g5 a7-a8Q Kg5-f4 Kb5-b6 Kf4-g5 Qa8-g2+ Kg5-f5 Qg2-g3 Kf5-e6 Qg3-f3 Ke6-d6 Qf3-a8 Kd6-e6 Qa8-c8+ Ke6-e5
36/40 00:00 2,234k 7,138k +35.39 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4-b3 Kb6xb5 Kb3xc3 a3-a4 Kc3-d4 a4-a5 Kd4-e4 a5-a6 Ke4-f4 a6-a7 Kf4-g5 a7-a8Q Kg5-g4 Qa8-c8+ Kg4-g5 Qc8-g8+ Kg5-f4 Qg8-g2 Kf4-e3 Kb5-b6 Ke3-d3 Qg2-g8 Kd3-e2 Kb6-b5
37/40 00:00 2,365k 7,145k +35.39 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4xa3 Kb6xb5 Ka3-b3 c3-c4 Kb3-c3 c4-c5 Kc3-d4 c5-c6 Kd4-e5 c6-c7 Ke5-e6 c7-c8Q+ Ke6-f7 Kb5-b6 Kf7-g7 Kb6-c5 Kg7-f7 Qc8-a6 Kf7-e7 Qa6-c6 Ke7-f8 Qc6-g2 Kf8-f7
38/40 00:00 2,861k 7,490k +35.39 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4xa3 Kb6xb5 Ka3-b3 c3-c4 Kb3-c3 c4-c5 Kc3-d4 c5-c6 Kd4-e5 c6-c7 Ke5-e6 c7-c8Q+ Ke6-f7 Kb5-b6 Kf7-g7 Kb6-c5 Kg7-f7 Qc8-a6 Kf7-e7 Kc5-b5 Ke7-f8 Qa6-b7 Kf8-g8 Kb5-b4
39/47 00:00 5,600k 8,396k +96.05 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4xa3 Kb6xb5 Ka3-b3 c3-c4 Kb3-c3 c4-c5 Kc3-d4 c5-c6 Kd4-e5 c6-c7 Ke5-f5 c7-c8Q+ Kf5-f4 Kb5-c6 Kf4-g3 Qc8-g8+ Kg3-h4 Kc6-c5 Kh4-h3 Qg8-g5 Kh3-h2 Kc5-b5 Kh2-h1 Qg5-g4 Kh1-h2 Qg4-f3 Kh2-g1 Qf3-h3 Kg1-f2 Qh3-g4 Kf2-e3 Kb5-c5
40/41 00:00 5,788k 8,462k +96.05 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4xa3 Kb6xb5 Ka3-b3 c3-c4 Kb3-c3 c4-c5 Kc3-d4 c5-c6 Kd4-e5 c6-c7 Ke5-f4 c7-c8Q Kf4-g3 Kb5-c6 Kg3-h2 Qc8-g4 Kh2-h1 Kc6-c5 Kh1-h2 Kc5-b6 Kh2-h1 Qg4-f3+ Kh1-h2 Kb6-b5 Kh2-g1 Qf3-h3 Kg1-f2 Qh3-g4 Kf2-e3
41/54 00:00 6,487k 8,558k +96.05 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4xa3 Kb6xb5 Ka3-b3 c3-c4 Kb3-c3 c4-c5 Kc3-d4 c5-c6 Kd4-e5 c6-c7 Ke5-f4 c7-c8Q Kf4-g3 Kb5-c6 Kg3-h4 Kc6-c5 Kh4-g3 Qc8-a8 Kg3-f2 Kc5-b5 Kf2-g3 Kb5-b4 Kg3-h4 Qa8-g8 Kh4-h3 Kb4-c5 Kh3-h2 Qg8-g4 Kh2-h1 Qg4-f3+ Kh1-h2 Kc5-c6
42/45 00:01 17,140k 12,438k +M60 Kc3-b4 Kb6-a6 Kb4-c5 Ka6-a5 c2-c3 Ka5-a6 Kc5-c6 Ka6-a5 Kc6-b7 Ka5-a4 Kb7-b6 Ka4xa3 Kb6xb5 Ka3-b3 c3-c4 Kb3-c3 c4-c5 Kc3-d4 c5-c6 Kd4-e5 c6-c7 Ke5-f4 c7-c8Q Kf4-g3 Kb5-c6 Kg3-h4 Qc8-g8 Kh4-h3 Qg8-g1 Kh3-h4 Qg1-g2 Kh4-h5 Kc6-d5 Kh5-h4 Kd5-c5 Kh4-h5 Kc5-c6 Kh5-h4 Qg2-f3 Kh4-g5 Kc6-b5 Kg5-h4
43/51 00:01 18,312k 12,577k +M41 Kc3-b4 Kb6-a6 a3-a4 b5xa4 Kb4xa4 Ka6-b6 Ka4-b4 Kb6-c6 Kb4-c4 Kc6-b6 Kc4-d5 Kb6-c7 Kd5-c5 Kc7-d7 Kc5-b6 Kd7-e6 Kb6-c6 Ke6-e7 c2-c4 Ke7-e6 c4-c5 Ke6-e5 Kc6-b6 Ke5-f4 c5-c6 Kf4-f5 c6-c7 Kf5-f6 Kb6-c5 Kf6-g7 Kc5-d5 Kg7-h8 c7-c8Q+ Kh8-h7 Qc8-a8 Kh7-g7 Kd5-c5 Kg7-f6 Qa8-c8 Kf6-f7 Qc8-f5+ Kf7-g7 Qf5-g4+ Kg7-h8 Qg4-c8+ Kh8-g7
44/52 00:02 45,244k 15,591k +M35 Kc3-b4 Kb6-a6 a3-a4 b5xa4 Kb4xa4 Ka6-b6 Ka4-b4 Kb6-c6 Kb4-c4 Kc6-b6 Kc4-d5 Kb6-c7 Kd5-c5 Kc7-d7 Kc5-b6 Kd7-e6 c2-c4 Ke6-d7 c4-c5 Kd7-c8 Kb6-c6 Kc8-d8 Kc6-b7 Kd8-e7 c5-c6 Ke7-e6 c6-c7 Ke6-f5 c7-c8Q+ Kf5-f4 Qc8-g8 Kf4-f3 Kb7-c6 Kf3-f2 Qg8-g4 Kf2-e3 Kc6-c5 Ke3-f2 Kc5-d5 Kf2-e3 Qg4-g3+ Ke3-d2 Kd5-c5 Kd2-e2 Qg3-g2+ Ke2-d3
45/53 00:03 46,881k 15,452k +M33 Kc3-b4 Kb6-a6 a3-a4 b5xa4 Kb4xa4 Ka6-b6 Ka4-b4 Kb6-c6 Kb4-c4 Kc6-b6 Kc4-d5 Kb6-c7 Kd5-c5 Kc7-b7 c2-c3 Kb7-a6 c3-c4 Ka6-a5 Kc5-d5 Ka5-b6 Kd5-d6 Kb6-b7 c4-c5 Kb7-c8 Kd6-c6 Kc8-d8 Kc6-b7 Kd8-e7 c5-c6 Ke7-f7 c6-c7 Kf7-f6 c7-c8Q Kf6-g5 Qc8-g8+ Kg5-h4 Kb7-b6 Kh4-h3 Qg8-g1 Kh3-h4 Qg1-g2 Kh4-h5 Qg2-g3 Kh5-h6 Kb6-c5
46/56 00:03 61,311k 16,088k +M31 Kc3-b4 Kb6-a6 a3-a4 b5xa4 Kb4xa4 Ka6-b6 Ka4-b4 Kb6-c6 Kb4-c4 Kc6-b6 Kc4-d5 Kb6-c7 Kd5-c5 Kc7-b7 Kc5-d6 Kb7-c8 c2-c3 Kc8-b8 c3-c4 Kb8-b7 c4-c5 Kb7-c8 Kd6-c6 Kc8-b8 Kc6-d7 Kb8-a7 Kd7-d6 Ka7-a6 c5-c6 Ka6-b6 c6-c7 Kb6-b7 Kd6-d7 Kb7-b6 c7-c8Q Kb6-b5 Kd7-d6 Kb5-b4 Qc8-g4+ Kb4-b5 Kd6-d5 Kb5-b6 Qg4-f3 Kb6-a6 Kd5-c5
47/50 00:04 69,437k 16,458k +M28 Kc3-b4 Kb6-a6 a3-a4 b5xa4 Kb4xa4 Ka6-b6 Ka4-b4 Kb6-c6 Kb4-c4 Kc6-b6 Kc4-d5 Kb6-c7 Kd5-c5 Kc7-b7 Kc5-d6 Kb7-c8 c2-c3 Kc8-b8 c3-c4 Kb8-b7 c4-c5 Kb7-c8 Kd6-c6 Kc8-b8 Kc6-d7 Kb8-a7 c5-c6 Ka7-b6 c6-c7 Kb6-c5 c7-c8Q+ Kc5-d5 Qc8-g8+ Kd5-e4 Kd7-d6 Ke4-f3 Kd6-c5 Kf3-f4 Qg8-g2 Kf4-f5 Qg2-g3 Kf5-e4 Qg3-f2 Ke4-d3 Qf2-f3+ Kd3-d2 Kc5-c4 Kd2-e1 Qf3-g2
48/51 00:04 82,757k 16,705k +M26 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5 Kc3-d4 a3-a4 Kd4-d5 Kb5-b6 Kd5-e4 a4-a5 Ke4-f3 a5-a6 Kf3-f2 a6-a7 Kf2-g3 a7-a8Q Kg3-h3 Qa8-f3+ Kh3-h2 Kb6-b5 Kh2-g1 Qf3-h3 Kg1-f2 Qh3-g4 Kf2-e3 Qg4-g3+ Ke3-d4 Qg3-f3 Kd4-e5 Kb5-c6 Ke5-d4 Qf3-e2 Kd4-c3 Kc6-c5 Kc3-b3 Qe2-d2 Kb3-a3 Kc5-c4 Ka3-a4 Qd2-a2+
49/52 00:05 89,409k 16,882k +M26 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5 Kc3-d4 a3-a4 Kd4-d5 Kb5-b6 Kd5-e4 a4-a5 Ke4-f3 a5-a6 Kf3-f2 a6-a7 Kf2-g3 a7-a8Q Kg3-h3 Qa8-f3+ Kh3-h2 Kb6-b5 Kh2-g1 Qf3-h3 Kg1-f2 Qh3-g4 Kf2-e3 Qg4-g3+ Ke3-d4 Qg3-f3 Kd4-e5 Kb5-c6 Ke5-d4 Qf3-e2 Kd4-c3 Kc6-c5 Kc3-b3 Qe2-d2 Kb3-a3 Kc5-c4 Ka3-a4 Qd2-a2+
50/53 00:05 92,462k 16,845k +M26 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5 Kc3-d4 a3-a4 Kd4-d5 Kb5-b6 Kd5-e4 a4-a5 Ke4-f3 a5-a6 Kf3-f2 a6-a7 Kf2-g3 a7-a8Q Kg3-h3 Qa8-h1+ Kh3-g3 Qh1-g1+ Kg3-f3 Kb6-c5 Kf3-f4 Qg1-g2 Kf4-f5 Qg2-g3 Kf5-e4 Qg3-f2 Ke4-d3 Qf2-f3+ Kd3-d2 Kc5-b4 Kd2-e1 Qf3-g2 Ke1-d1 Qg2-f2 Kd1-c1 Kb4-c3 Kc1-d1 Qf2-d2+
51/52 00:06 105,227k 16,915k +M26 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5 Kc3-d4 a3-a4 Kd4-d5 a4-a5 Kd5-d6 Kb5-b6 Kd6-e5 a5-a6 Ke5-f4 a6-a7 Kf4-g3 a7-a8Q Kg3-h3 Qa8-h1+ Kh3-g3 Qh1-g1+ Kg3-f3 Kb6-b5 Kf3-e4 Qg1-f2 Ke4-e5 Kb5-c6 Ke5-e4 Kc6-c5 Ke4-d3 Qf2-f3+ Kd3-d2 Kc5-b4 Kd2-e1 Qf3-g2 Ke1-d1 Qg2-f2 Kd1-c1 Kb4-c3 Kc1-d1 Qf2-d2+
52/52 00:06 105,837k 16,899k +M26 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5 Kc3-d4 a3-a4 Kd4-d5 a4-a5 Kd5-d6 Kb5-b6 Kd6-e5 a5-a6 Ke5-f4 a6-a7 Kf4-g3 a7-a8Q Kg3-h3 Qa8-h1+ Kh3-g3 Qh1-g1+ Kg3-f3 Kb6-b5 Kf3-e4 Qg1-g4+ Ke4-e3 Qg4-g3+ Ke3-d4 Qg3-f3 Kd4-e5 Kb5-c6 Ke5-d4 Qf3-e2 Kd4-c3 Kc6-c5 Kc3-b3 Qe2-d2 Kb3-a3 Kc5-c4 Ka3-a4 Qd2-a2+
53/52 00:06 106,024k 16,902k +M26 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 c2-c3 Kc5-c6 Ka5-a6 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5 Kc3-d4 a3-a4 Kd4-d5 a4-a5 Kd5-d6 Kb5-b6 Kd6-e5 a5-a6 Ke5-f4 a6-a7 Kf4-g3 a7-a8Q Kg3-h3 Qa8-h1+ Kh3-g3 Qh1-g1+ Kg3-f3 Kb6-b5 Kf3-e4 Qg1-g4+ Ke4-e3 Qg4-g3+ Ke3-d4 Qg3-f3 Kd4-e5 Kb5-c6 Ke5-d4 Qf3-e2 Kd4-c3 Kc6-c5 Kc3-b3 Qe2-d2 Kb3-a3 Kc5-c4 Ka3-a4 Qd2-a2+
54/52 00:06 109,274k 16,934k +M25 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6 c2-c3 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5 Kc3-d4 a3-a4 Kd4-d5 a4-a5 Kd5-d6 Kb5-b6 Kd6-e5 a5-a6 Ke5-f4 a6-a7 Kf4-g3 a7-a8Q Kg3-f2 Qa8-g8 Kf2-f3 Kb6-c6 Kf3-f4 Qg8-g2 Kf4-f5 Qg2-g3 Kf5-f6 Kc6-d6 Kf6-f5 Kd6-d5 Kf5-f6 Qg3-g4 Kf6-f7 Qg4-g5 Kf7-e8 Qg5-g7 Ke8-d8 Kd5-d6 Kd8-c8 Qg7-c7+
55/50 00:06 109,849k 16,923k +M25 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6 c2-c3 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5 Kc3-d4 a3-a4 Kd4-d5 a4-a5 Kd5-d6 Kb5-b6 Kd6-e5 a5-a6 Ke5-f4 a6-a7 Kf4-g3 a7-a8Q Kg3-f2 Qa8-g8 Kf2-f3 Kb6-c6 Kf3-f4 Qg8-g2 Kf4-f5 Qg2-g3 Kf5-e4 Kc6-c5 Ke4-f5 Kc5-d5 Kf5-f6 Qg3-g4 Kf6-f7 Qg4-g5 Kf7-e8 Qg5-g7 Ke8-d8 Kd5-d6 Kd8-c8 Qg7-c7+
56/50 00:06 110,385k 16,848k +M25 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6 c2-c3 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5 Kc3-d4 a3-a4 Kd4-d5 a4-a5 Kd5-d6 Kb5-b6 Kd6-e5 a5-a6 Ke5-f4 a6-a7 Kf4-g3 a7-a8Q Kg3-f2 Qa8-g8 Kf2-f3 Kb6-c6 Kf3-f4 Qg8-g2 Kf4-f5 Qg2-g3 Kf5-e4 Kc6-c5 Ke4-f5 Kc5-d5 Kf5-f6 Qg3-g4 Kf6-f7 Qg4-g5 Kf7-e8 Qg5-g7 Ke8-d8 Kd5-d6 Kd8-c8 Qg7-c7+
57/50 00:09 159,954k 16,875k +M23 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6 c2-c3 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5 Kc3-d4 Kb5-b6 Kd4-d5 a3-a4 Kd5-e4 a4-a5 Ke4-e5 a5-a6 Ke5-f4 Kb6-c5 Kf4-g4 a6-a7 Kg4-h3 a7-a8Q Kh3-g3 Qa8-e4 Kg3-f2 Qe4-g4 Kf2-f1 Qg4-f3+ Kf1-g1 Kc5-d4 Kg1-h2 Qf3-g4 Kh2-h1 Kd4-e4 Kh1-h2 Ke4-f3 Kh2-h1 Qg4-g2+
58/44 00:32 571,902k 17,742k +M22 Kc3-b4 Kb6-c6 Kb4-a5 Kc6-c5 Ka5-a6 Kc5-c6 c2-c3 Kc6-c5 Ka6-b7 Kc5-d5 Kb7-b6 Kd5-c4 Kb6-c6 Kc4xc3 Kc6xb5 Kc3-d4 a3-a4 Kd4-d5 a4-a5 Kd5-d6 Kb5-b6 Kd6-e5 a5-a6 Ke5-f4 a6-a7 Kf4-g3 a7-a8Q Kg3-f4 Qa8-g2 Kf4-e3 Qg2-g4 Ke3-d2 Qg4-f3 Kd2-c2 Kb6-c5 Kc2-d2 Kc5-c4 Kd2-e1 Qf3-g2 Ke1-d1 Kc4-d3 Kd1-c1 Qg2-c2+

[chetday]

I sure like this new version, Erik. Thank you!

[emadsen]

Thanks everyone for your kind words.

I get the sentiment though. I think you've made a well rounded package there that you'll be able to look back at with pride and without the feeling of having abandoned a project too early! You've been an inspiration to me. For the longest time MadChess was the strongest C# engine I knew and that I want to catch up to!

Thanks Thomas. You and JoAnn have made great progress with your C# engines. I enjoy reading your devlog posts. I like your candor about your ideas, what you tried, what worked, what didn't.

I'll be sure to read through the UCI strength components, as every attempt at that I've ever seen has been wildly unique.

I'm sure the Unreasonable Inferior Moves feature can be improved. But that's the real trick: How to classify a move as bad / odd / unlikely to be considered by a novice, etc?

I am interested in the limit strenght mode. Is there a way I can install MadChess on my Android smartphone?

You can begin by compiling the source code for Linux. I'm not familiar with installing engines on mobile phones, so you're on your own there.

Your blog (especially the strength gains per feature) is what inspired me to have the SPRT testing page on my site with the results of every (part of a) feature. It also gave a good indication of expected gains.

Thanks Marcel. I'm glad to hear you're resuming development of your engine. Keep up the great work blogging about your efforts and writing the Rustic book. Such documentation is very helpful for new chess engine programmers.

It's always a good day when there is a new version of MadChess.

I sure like this new version, Erik. Thank you!

Awesome! Thanks Dann and Chet. I'm glad to hear such positive sentiments.

3rd game I decided to set the strength limit to 1550 and I got a hard fought draw with the Clemenz Opening 1.h3.

Jorge, thanks for playing games against MadChess and sharing them here. Is MadChess too weak or too strong for the Elo rating? Or about right? It's difficult for me to know because 1550 is way beyond my chess abilities.

[Odd Gunnar Malin]

I have released version 3.2 of my chess engine.

The main feature in this release is a sophisticated limit-strength mode, including adjustments to chess knowledge, search speed, chance of erring or blundering, and severity of blunders. MadChess, in limit-strength mode, excludes moves it considers unreasonable (dumb moves even a chess novice wouldn’t play). I have extensively documented the settings and technical implementation of MadChess’ limit-strength mode in The MadChess UCI_LimitStrength Algorithm. I also provide a Limit-Strength FAQ.

Thanks! I do a lot of sparring games from the opening, middlegame and endgame. MadChess is in my pool of engines together with commercials that I use regularly.

Enjoy!

I sure will.

[mvanthoor]

Thanks Marcel. I'm glad to hear you're resuming development of your engine. Keep up the great work blogging about your efforts and writing the Rustic book. Such documentation is very helpful for new chess engine programmers.

Thanks. The book (the parts of it that are done, that is...) gets more hits than I could have suspected. I hope to finish the Texel tuner (the easy version without gradient descent) in the near future, release Rustic 4, and target the book at that. Any other refactors have been relegated to version 5 and 6.

Even though I don't like C# for anything else but backend programming, for which it seems to almost have been invented (and so I never looked at MadChess' code), I have to say that I've read most pages in your blog numerous times and I'll probably read some of them again in the future; even the old posts.

In both of our cases I feel that those blogs/sites are more valuable than the engines themselves.