Stockfish announces Mate in #30?

[dangi12012]

So for that position Stockfish manages to find a mate in 30. Its really 30 - thats 60 plies needed to complete it.

[fen]8/p2nkbBR/Pp1p1p2/1PpqpP2/8/8/5K1Q/8 b - - 1 59[/fen]

I think thats quite impressive.
Does anyone here find a position with a longer mate sequence in SF?

[Vinvin]

Even a mate in 28 :

Code: Select all

FEN: 8/p2nkbBR/Pp1p1p2/1PpqpP2/8/8/5K1Q/8 b - - 1 59

Stockfish_21092606_x64_avx2:
Found 511 tablebases
NNUE evaluation using nn-13406b1dcbe0.nnue enabled
...
 48/68	01:00	 4.315.689k	71.612k	-77,23	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kg2 Bd5+ 62.Kg1 Qc1+ 63.Kf2 Qd2+ 64.Kf1 Bc4+ 65.Kg1 Qe1+ 66.Kg2 Bd5+ 67.Kh3 Qf1+ 68.Kh4 Qc4+ 69.Kh3 Qd3+ 70.Qg3 Qxf5+ 71.Kh2 Qxh7+ 72.Kg1 Kf7 73.Kf2 Qxg7 74.Qh3 Be6 75.Qh4 d5 76.Ke1 Qg6 77.Kd2 d4 78.Qh1 c4 79.Qf3 Qg1 80.Qh5+ Ke7 81.Qh4 c3+ 82.Ke2 Bg4+ 83.Qxg4 Qxg4+ 84.Kf1 Qf3+ 85.Kg1 Qg3+ 86.Kh1 Qf3+ 87.Kh2
 49/64-	01:00	 4.330.416k	71.598k	-77,31	59. ... Qd2+
 49/64-	01:00	 4.356.700k	71.537k	-77,39	59. ... Qd2+
 49/64-	01:17	 5.741.295k	73.739k	-151,70	59. ... Qd2+
 49/64	01:17	 5.743.245k	73.726k	-84,81	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kg2 Bd5+ 62.Kg1 Qc1+ 63.Kf2 Qd2+ 64.Kf1 Bc4+ 65.Kg1 Qe1+ 66.Kg2 Bd5+ 67.Kh3 Qf1+ 68.Kh4 Qc4+ 69.Kh3 Qd3+ 70.Qg3 Qxf5+ 71.Kh2 Qxh7+ 72.Kg1 Kf7 73.Kf2 Qxg7 74.Qh3 Be6 75.Qh4 d5 76.Qh2 d4 77.Qh1 Qg6 78.Qh4 e4 79.Ke2 Bc4+ 80.Kd2 e3+ 81.Kc1 Qg1+ 82.Kc2 Qg2+ 83.Qf2
 50/74-	01:18	 5.797.876k	73.518k	-84,89	59. ... Qd2+
 50/74-	01:18	 5.797.893k	73.519k	-84,98	59. ... Qd2+
 50/74-	01:19	 5.829.243k	73.466k	-M76	59. ... Qd2+
 50/74	01:25	 6.269.636k	72.975k	-M32	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kg2 Bd5+ 62.Kg1 Qc1+ 63.Kf2 Qd2+ 64.Kf1 Bc4+ 65.Kg1 Qe1+ 66.Kg2 Bd5+ 67.Kh3 Qf1+ 68.Kh4 Qc4+ 69.Kh3 Qd3+ 70.Qg3 Qxf5+ 71.Kh2 Qxh7+ 72.Kg1 Kf7 73.Kf2 Qxg7 74.Qd3 Qg2+ 75.Ke1 Qe4+ 76.Qxe4 Bxe4 77.Ke2 d5 78.Ke3 Bf5 79.Ke2 c4 80.Kd2 Be6 81.Ke1 d4 82.Kf1 c3 83.Ke1 Bg4 84.Kf2 c2 85.Kg3 c1Q 86.Kxg4 Qf4+ 87.Kh3 Qf2 88.Kg4 f5+ 89.Kh3
 51/60	02:04	 8.026.676k	64.403k	-M30	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kg2 Bd5+ 62.Kg1 Qc1+ 63.Kf2 Qd2+ 64.Kf1 Bc4+ 65.Kg1 Qe1+ 66.Kg2 Bd5+ 67.Kh3 Qf1+ 68.Kh4 Qc4+ 69.Kh3 Qd3+ 70.Qg3 Qxf5+ 71.Kh2 Qxh7+ 72.Kg1 Kf7 73.Kf2 Qxg7 74.Qh3 Be6 75.Qh5+ Qg6 76.Qxg6+ Kxg6 77.Ke1 Kf7 78.Kf1 Bb3 79.Ke2 c4 80.Kd2 d5 81.Ke2 c3 82.Kf2 d4 83.Kg2 Bd5+ 84.Kh3 c2 85.Kh4 c1Q 86.Kg3 Qg1+ 87.Kh4 Qg2 88.Kh5 Qg5+
 52/60	02:15	 8.577.353k	63.189k	-M30	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qxf5+ 62.Kg2 Bd5+ 63.Kg1 Qg5+ 64.Kf1 Bc4+ 65.Kf2 Qd2+ 66.Kg3 Qf4+ 67.Kg2 Bd5+ 68.Kg1 Qc1+ 69.Kf2 Qd2+ 70.Kf1 Bc4+ 71.Kg1 Qe1+ 72.Kg2 Bd5+ 73.Kh3 Qf1+ 74.Kh4 Qc4+ 75.Kg3 Qf4+ 76.Kh3 Qf5+ 77.Kg3 Qf3+ 78.Kh4 Qe4+ 79.Kh3 Qxh7+ 80.Kg3 Qd3+ 81.Kh4 Qe4+ 82.Kh3 Qf5+ 83.Kg3 Qf3+ 84.Kh4 Be6 85.Bxf6+ Nxf6 86.Kg5 Qf5+ 87.Kh6 Qh7+ 88.Kg5 Ne4+
 53/72	02:37	 9.693.638k	61.506k	-M30	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qxf5+ 62.Kg2 Bd5+ 63.Kg1 Qg5+ 64.Kf1 Bc4+ 65.Kf2 Qd2+ 66.Kg3 Qf4+ 67.Kg2 Bd5+ 68.Kg1 Qc1+ 69.Kf2 Qd2+ 70.Kf1 Bc4+ 71.Kg1 Qe1+ 72.Kg2 Bd5+ 73.Kh3 Qf1+ 74.Kh4 Qc4+ 75.Kg3 Qf4+ 76.Kh3 Qf5+ 77.Kg3 Qf3+ 78.Kh4 Qe4+ 79.Kh3 Qxh7+ 80.Kg3 Qd3+ 81.Kh4 Qe4+ 82.Kh3 Qf5+ 83.Kg3 Qf3+ 84.Kh4 Be6 85.Bxf6+ Nxf6 86.Kg5 Qf5+ 87.Kh6 Qh7+ 88.Kg5 Ne4+
 54/60	02:37	 9.693.915k	61.505k	-M30	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qxf5+ 62.Kg2 Bd5+ 63.Kg1 Qg5+ 64.Kf1 Bc4+ 65.Kf2 Qd2+ 66.Kg3 Qf4+ 67.Kg2 Bd5+ 68.Kg1 Qc1+ 69.Kf2 Qd2+ 70.Kf1 Bc4+ 71.Kg1 Qe1+ 72.Kg2 Bd5+ 73.Kh3 Qf1+ 74.Kh4 Qc4+ 75.Kg3 Qf4+ 76.Kh3 Qf5+ 77.Kg3 Qf3+ 78.Kh4 Qe4+ 79.Kh3 Qxh7+ 80.Kg3 Qd3+ 81.Kh4 Qe4+ 82.Kh3 Qf5+ 83.Kg3 Qf3+ 84.Kh4 Be6 85.Bxf6+ Nxf6 86.Kg5 Qf5+ 87.Kh6 Qh7+ 88.Kg5 Ne4+
 55/60	02:41	 9.879.655k	61.013k	-M30	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qxf5+ 62.Kg2 Bd5+ 63.Kg1 Qg5+ 64.Kf1 Bc4+ 65.Kf2 Qd2+ 66.Kg3 Qf4+ 67.Kg2 Bd5+ 68.Kg1 Qc1+ 69.Kf2 Qd2+ 70.Kf1 Bc4+ 71.Kg1 Qe1+ 72.Kg2 Bd5+ 73.Kh3 Qf1+ 74.Kh4 Qc4+ 75.Kg3 Qf4+ 76.Kh3 Qf5+ 77.Kg3 Qf3+ 78.Kh4 Qe4+ 79.Kh3 Qxh7+ 80.Kg3 Qd3+ 81.Kh4 Qe4+ 82.Kh3 Qf5+ 83.Kg3 Qf3+ 84.Kh4 Be6 85.Bxf6+ Nxf6 86.Kg5 Qf5+ 87.Kh6 Qh7+ 88.Kg5 Ne4+
 56/60	02:42	 9.884.389k	60.995k	-M30	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qxf5+ 62.Kg2 Bd5+ 63.Kg1 Qg5+ 64.Kf1 Bc4+ 65.Kf2 Qd2+ 66.Kg3 Qf4+ 67.Kg2 Bd5+ 68.Kg1 Qc1+ 69.Kf2 Qd2+ 70.Kf1 Bc4+ 71.Kg1 Qe1+ 72.Kg2 Bd5+ 73.Kh3 Qf1+ 74.Kh4 Qc4+ 75.Kg3 Qf4+ 76.Kh3 Qf5+ 77.Kg3 Qf3+ 78.Kh4 Qe4+ 79.Kh3 Qxh7+ 80.Kg3 Qd3+ 81.Kh4 Qe4+ 82.Kh3 Qf5+ 83.Kg3 Qf3+ 84.Kh4 Be6 85.Bxf6+ Nxf6 86.Kg5 Qf5+ 87.Kh6 Qh7+ 88.Kg5 Ne4+
 57/60	04:36	 14.647.751k	53.025k	-M30	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qxf5+ 62.Kg2 Bd5+ 63.Kg1 Qg5+ 64.Kf1 Bc4+ 65.Kf2 Qd2+ 66.Kg3 Qf4+ 67.Kg2 Bd5+ 68.Kg1 Qc1+ 69.Kf2 Qd2+ 70.Kf1 Bc4+ 71.Kg1 Qe1+ 72.Kg2 Bd5+ 73.Kh3 Qf1+ 74.Kh4 Qc4+ 75.Kg3 Qf4+ 76.Kh3 Qf5+ 77.Kg3 Qf3+ 78.Kh4 Qe4+ 79.Kh3 Qxh7+ 80.Kg3 Qd3+ 81.Kh4 Qe4+ 82.Kh3 Qf5+ 83.Kg3 Qf3+ 84.Kh4 Be6 85.Bxf6+ Nxf6 86.Kg5 Qf5+ 87.Kh6 Qh7+ 88.Kg5 Ne4+
 58/60	04:36	 14.648.932k	53.025k	-M30	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qxf5+ 62.Kg2 Bd5+ 63.Kg1 Qg5+ 64.Kf1 Bc4+ 65.Kf2 Qd2+ 66.Kg3 Qf4+ 67.Kg2 Bd5+ 68.Kg1 Qc1+ 69.Kf2 Qd2+ 70.Kf1 Bc4+ 71.Kg1 Qe1+ 72.Kg2 Bd5+ 73.Kh3 Qf1+ 74.Kh4 Qc4+ 75.Kg3 Qf4+ 76.Kh3 Qf5+ 77.Kg3 Qf3+ 78.Kh4 Qe4+ 79.Kh3 Qxh7+ 80.Kg3 Qd3+ 81.Kh4 Qe4+ 82.Kh3 Qf5+ 83.Kg3 Qf3+ 84.Kh4 Be6 85.Bxf6+ Nxf6 86.Kg5 Qf5+ 87.Kh6 Qh7+ 88.Kg5 Ne4+
 59/60	04:36	 14.650.856k	53.024k	-M30	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qxf5+ 62.Kg2 Bd5+ 63.Kg1 Qg5+ 64.Kf1 Bc4+ 65.Kf2 Qd2+ 66.Kg3 Qf4+ 67.Kg2 Bd5+ 68.Kg1 Qc1+ 69.Kf2 Qd2+ 70.Kf1 Bc4+ 71.Kg1 Qe1+ 72.Kg2 Bd5+ 73.Kh3 Qf1+ 74.Kh4 Qc4+ 75.Kg3 Qf4+ 76.Kh3 Qf5+ 77.Kg3 Qf3+ 78.Kh4 Qe4+ 79.Kh3 Qxh7+ 80.Kg3 Qd3+ 81.Kh4 Qe4+ 82.Kh3 Qf5+ 83.Kg3 Qf3+ 84.Kh4 Be6 85.Bxf6+ Nxf6 86.Kg5 Qf5+ 87.Kh6 Qh7+ 88.Kg5 Ne4+
 60/60	06:50	 20.877.494k	50.870k	-M28	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qf3+ 62.Kh4 Qxf5 63.Kg3 Qf4+ 64.Kh3 Be6+ 65.Kg2 Bd5+ 66.Kg1 Qc1+ 67.Kf2 Qd2+ 68.Kf1 Bc4+ 69.Kg1 Qe1+ 70.Kg2 Bd5+ 71.Kh3 Qf1+ 72.Kh4 Qc4+ 73.Kg3 Qf4+ 74.Kh3 Qf5+ 75.Kg3 Qf3+ 76.Kh4 Qe4+ 77.Kh3 Qxh7+ 78.Kg3 Qd3+ 79.Kh4 Qe4+ 80.Kh3 Qf5+ 81.Kg3 Qf3+ 82.Kh4 Be6 83.Bxf6+ Nxf6 84.Kg5 Qf5+ 85.Kh6 Qh7+ 86.Kg5 Ne4+
 61/56	06:50	 20.885.950k	50.867k	-M28	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qf3+ 62.Kh4 Qxf5 63.Kg3 Qf4+ 64.Kh3 Be6+ 65.Kg2 Bd5+ 66.Kg1 Qc1+ 67.Kf2 Qd2+ 68.Kf1 Bc4+ 69.Kg1 Qe1+ 70.Kg2 Bd5+ 71.Kh3 Qf1+ 72.Kh4 Qc4+ 73.Kg3 Qf4+ 74.Kh3 Qf5+ 75.Kg3 Qf3+ 76.Kh4 Qe4+ 77.Kh3 Qxh7+ 78.Kg3 Qd3+ 79.Kh4 Qe4+ 80.Kh3 Qf5+ 81.Kg3 Qf3+ 82.Kh4 Be6 83.Bxf6+ Nxf6 84.Kg5 Qf5+ 85.Kh6 Qh7+ 86.Kg5 Ne4+
 62/56	06:54	 21.071.719k	50.800k	-M28	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qf3+ 62.Kh4 Qxf5 63.Kg3 Qf4+ 64.Kh3 Be6+ 65.Kg2 Bd5+ 66.Kg1 Qc1+ 67.Kf2 Qd2+ 68.Kf1 Bc4+ 69.Kg1 Qe1+ 70.Kg2 Bd5+ 71.Kh3 Qf1+ 72.Kh4 Qc4+ 73.Kg3 Qf4+ 74.Kh3 Qf5+ 75.Kg3 Qf3+ 76.Kh4 Qe4+ 77.Kh3 Qxh7+ 78.Kg3 Qd3+ 79.Kh4 Qe4+ 80.Kh3 Qf5+ 81.Kg3 Qf3+ 82.Kh4 Be6 83.Bxf6+ Nxf6 84.Kg5 Qf5+ 85.Kh6 Qh7+ 86.Kg5 Ne4+
 63/56	10:49	 31.213.010k	48.044k	-M28	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qf3+ 62.Kh4 Qxf5 63.Kg3 Qf4+ 64.Kh3 Be6+ 65.Kg2 Bd5+ 66.Kg1 Qc1+ 67.Kf2 Qd2+ 68.Kf1 Bc4+ 69.Kg1 Qe1+ 70.Kg2 Bd5+ 71.Kh3 Qf1+ 72.Kh4 Qc4+ 73.Kg3 Qf4+ 74.Kh3 Qf5+ 75.Kg3 Qf3+ 76.Kh4 Qe4+ 77.Kh3 Qxh7+ 78.Kg3 Qd3+ 79.Kh4 Qe4+ 80.Kh3 Qf5+ 81.Kg3 Qf3+ 82.Kh4 Be6 83.Bxf6+ Nxf6 84.Kg5 Qf5+ 85.Kh6 Qh7+ 86.Kg5 Ne4+
 64/56	11:05	 31.875.626k	47.896k	-M28	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qf3+ 62.Kh4 Qxf5 63.Kg3 Qf4+ 64.Kh3 Be6+ 65.Kg2 Bd5+ 66.Kg1 Qc1+ 67.Kf2 Qd2+ 68.Kf1 Bc4+ 69.Kg1 Qe1+ 70.Kg2 Bd5+ 71.Kh3 Qf1+ 72.Kh4 Qc4+ 73.Kg3 Qf4+ 74.Kh3 Qf5+ 75.Kg3 Qf3+ 76.Kh4 Qe4+ 77.Kh3 Qxh7+ 78.Kg3 Qd3+ 79.Kh4 Qe4+ 80.Kh3 Qf5+ 81.Kg3 Qf3+ 82.Kh4 Be6 83.Bxf6+ Nxf6 84.Kg5 Qf5+ 85.Kh6 Qh7+ 86.Kg5 Ne4+
 65/56	11:05	 31.890.176k	47.891k	-M28	59. ... Qd2+ 60.Kg3 Qf4+ 61.Kh3 Qf3+ 62.Kh4 Qxf5 63.Kg3 Qf4+ 64.Kh3 Be6+ 65.Kg2 Bd5+ 66.Kg1 Qc1+ 67.Kf2 Qd2+ 68.Kf1 Bc4+ 69.Kg1 Qe1+ 70.Kg2 Bd5+ 71.Kh3 Qf1+ 72.Kh4 Qc4+ 73.Kg3 Qf4+ 74.Kh3 Qf5+ 75.Kg3 Qf3+ 76.Kh4 Qe4+ 77.Kh3 Qxh7+ 78.Kg3 Qd3+ 79.Kh4 Qe4+ 80.Kh3 Qf5+ 81.Kg3 Qf3+ 82.Kh4 Be6 83.Bxf6+ Nxf6 84.Kg5 Qf5+ 85.Kh6 Qh7+ 86.Kg5 Ne4+

[Uri Blass]

I do not think that Stockfish is the best mate solver but I can easily find tablebases position with longer mates when engines can see forced mate without looking at egtb

Here is an example

[fen]8/8/8/6B1/8/8/4k3/1K5N b - - 0 1[/fen]

Dragon-2.5-64bit-avx2:
Found 0 WDL and 0 DTZ tablebase files (up to 0-man).

39- 00:07 107,071k 13,515k -5.89 Ke2-f3 Bg5-h4
39- 00:08 113,873k 13,639k -5.98 Ke2-f3 Bg5-h4
39- 00:10 156,608k 14,378k -6.80 Ke2-f3 Bg5-h4
39- 00:10 157,408k 14,379k -6.26 Ke2-d3 Nh1-g3
39- 00:11 167,235k 14,418k -6.78 Ke2-d3 Nh1-g3
39 01:13 604,492k 8,277k -M46 Ke2-d3 Nh1-g3 Kd3-c3 Bg5-e7 Kc3-b3 Be7-f8 Kb3-c3 Kb1-a2 Kc3-c4 Ka2-b2 Kc4-b5 Kb2-b3 Kb5-b6 Kb3-c4 Kb6-c6 Bf8-c5 Kc6-c7 Kc4-d5 Kc7-b7 Bc5-e3 Kb7-c7 Kd5-c5 Kc7-b7 Be3-f4 Kb7-a6 Kc5-c6 Ka6-a5 Bf4-d2+ Ka5-a6 Bd2-e3 Ka6-a5 Be3-c5 Ka5-a4 Ng3-e4 Ka4-b3 Kc6-b5 Kb3-c2 Kb5-c4 Kc2-d1 Ne4-g3 Kd1-c1
40 01:23 644,760k 7,684k -M44 Ke2-d3 Kb1-b2 Kd3-d4 Bg5-e7 Kd4-c4 Nh1-g3 Kc4-d3 Kb2-b3 Kd3-d4 Be7-b4 Kd4-d5 Bb4-f8 Kd5-d4 Kb3-b4 Kd4-d5 Kb4-b5 Kd5-d4 Bf8-h6 Kd4-d5 Bh6-f4 Kd5-d4 Kb5-c6 Kd4-c4 Bf4-e3 Kc4-d3 Be3-a7 Kd3-c4 Ba7-c5 Kc4-b3 Kc6-b5 Kb3-c3 Bc5-f2 Kc3-d3 Kb5-b4 Kd3-c2 Kb4-c4 Kc2-d1 Bf2-e3 Kd1-c2 Be3-f4
40 01:25 648,766k 7,632k -M45 Ke2-f3 Bg5-h4 Kf3-e3 Kb1-c2 Ke3-d4 Kc2-b3 Kd4-c5 Bh4-e7+ Kc5-d4 Kb3-b4 Kd4-d5 Be7-h4 Kd5-e4 Kb4-c4 Ke4-f3 Bh4-e1 Kf3-g2 Nh1-g3 Kg2-f3 Kc4-d4 Kf3-f4 Ng3-e2+ Kf4-f3 Kd4-d3 Kf3-g2 Kd3-e3 Kg2-h2 Ke3-f2 Kh2-h3 Kf2-f3 Kh3-h2 Ne2-g3 Kh2-h3 Be1-d2 Kh3-h2 Bd2-c1 Kh2-g1 Bc1-e3+ Kg1-h2 Be3-a7 Kh2-h3 Ng3-f1 Kh3-h4
41 01:30 668,798k 7,374k -M46 Ke2-f3 Bg5-h4 Kf3-e3 Kb1-c2 Ke3-d4 Kc2-b3 Kd4-c5 Bh4-e7+ Kc5-b5 Nh1-g3 Kb5-b6 Kb3-c4 Kb6-c6 Be7-g5 Kc6-b6 Bg5-h4 Kb6-c7 Kc4-b5 Kc7-d6 Bh4-g5 Kd6-c7 Bg5-h6 Kc7-d6 Kb5-b6 Kd6-d5 Bh6-e3 Kd5-c4 Kb6-c6 Kc4-d3 Be3-a7 Kd3-c3 Kc6-c5 Kc3-b3 Kc5-b5 Kb3-c3 Ba7-b6 Kc3-d3 Kb5-b4 Kd3-d2 Kb4-c4 Kd2-c1 Bb6-e3+ Kc1-c2
42 01:34 681,867k 7,228k -M45 Ke2-f3 Bg5-h4 Kf3-e3 Kb1-c2 Ke3-d4 Kc2-b3 Kd4-c5 Bh4-e7+ Kc5-b5 Nh1-g3 Kb5-b6 Kb3-c4 Kb6-c6 Be7-g5 Kc6-b6 Kc4-d5 Kb6-a7 Kd5-c5 Ka7-a8 Kc5-b6 Ka8-b8 Bg5-h6 Kb8-a8 Ng3-f5 Ka8-b8 Nf5-h4 Kb8-c8 Bh6-f4 Kc8-d7 Kb6-b5 Kd7-e7 Kb5-c4 Ke7-e6 Kc4-c5 Ke6-d7 Kc5-d5 Kd7-e7 Bf4-c7 Ke7-f7 Bc7-e5 Kf7-e8 Kd5-d6 Ke8-f7
43 01:45 719,535k 6,814k -M44 Ke2-f3 Bg5-h4 Kf3-e3 Kb1-c2 Ke3-d4 Kc2-b3 Kd4-c5 Bh4-e7+ Kc5-b5 Nh1-g3 Kb5-c6 Kb3-c4 Kc6-d7 Be7-g5 Kd7-c6 Bg5-e3 Kc6-b7 Kc4-c5 Kb7-c7 Be3-c1 Kc7-b7 Bc1-f4 Kb7-a7 Bf4-e5 Ka7-b7 Be5-d6 Kb7-a8 Kc5-c6 Ka8-a7 Bd6-c7 Ka7-a6 Bc7-f4 Ka6-a7 Ng3-e2 Ka7-a8 Bf4-c7 Ka8-a7 Ne2-f4 Ka7-a8 Nf4-d5 Ka8-a7 Nd5-b6 Ka7-a6 Bc7-b8
44 03:08 972,487k 5,173k -M43 Ke2-f3 Bg5-h4 Kf3-g4 Bh4-e1 Kg4-f3 Kb1-c2 Kf3-e4 Kc2-b3 Ke4-d4 Be1-h4 Kd4-c5 Bh4-f2+ Kc5-d5 Nh1-g3 Kd5-e5 Bf2-b6 Ke5-f4 Bb6-c7+ Kf4-f3 Kb3-c4 Kf3-f2 Kc4-d3 Kf2-f3 Ng3-e4 Kf3-g4 Kd3-e3 Kg4-f5 Ne4-c5 Kf5-g4 Ke3-e4 Kg4-h4 Bc7-f4 Kh4-g4 Nc5-d3 Kg4-h3 Ke4-f3 Kh3-h4 Nd3-f2 Kh4-h5 Kf3-e4 Kh5-g6 Ke4-e5 Kg6-f7 Ke5-d6 Kf7-f6 Bf4-e5+ Kf6-f5
45 03:34 1,054,203k 4,919k -M43 Ke2-f3 Bg5-h4 Kf3-g4 Bh4-e1 Kg4-f3 Kb1-c2 Kf3-e4 Kc2-b3 Ke4-d4 Nh1-g3 Kd4-c5 Be1-d2 Kc5-d5 Bd2-e3 Kd5-d6 Kb3-c4 Kd6-c6 Ng3-f5 Kc6-d7 Kc4-d5 Kd7-c7 Be3-c5 Kc7-b8 Kd5-c6 Kb8-a8 Bc5-g1 Ka8-b8 Bg1-e3 Kb8-a8 Kc6-b6 Ka8-b8 Be3-c1 Kb8-a8 Bc1-a3 Ka8-b8 Nf5-d6 Kb8-a8 Nd6-b5 Ka8-b8 Nb5-c7 Kb8-c8 Kb6-c6 Kc8-d8 Ba3-d6 Kd8-c8

[Jouni]

mate in 30 is so 1990s . Here SF displays mate in 74.

[fen]k7/B3p1p1/PPp1P3/4P2b/p4p1P/P1p2p1K/2P2P2/7B w - - 0 1
[/fen]


1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 Bh5 15.Kg1 Bg4 16.Kh2 Bh5 17.Kh3 g6 18.Kh2 Bg4 19.Kg1 Bh5 20.Kf1 Bg4 21.Ke1 Bh5 22.Kd1 Bg4 23.Kc1 Bh5 24.Kb1 Bg4 25.Ka1 Bh5 26.Ka2 Bg4 27.Kb1 Bh5 28.Kc1 Bg4 29.Kd1 Bh5 30.Ke1 Bg4 31.Kf1 Bh5 32.Kg1 Bg4 33.Kh2 Bh5 34.Kh3 c5 35.Kh2 Bg4 36.Kg1 Bh5 37.Kf1 Bg4 38.Ke1 Bh5 39.Kd1 Bg4 40.Kc1 Bh5 41.Kb1 Bg4 42.Ka1 Bh5 43.Ka2 Bg4 44.Kb1 Bh5 45.Kc1 Bg4 46.Kd1 Bh5 47.Ke1 Bg4 48.Kf1 Bh5 49.Kg1 Bg4 50.Kh2 Bh5 51.Kh3 c4 52.Kh2 Bg4 53.Kg1 Bh5 54.Kf1 Bg4 55.Ke1 Bh5 56.Kd1 Bg4 57.Kc1 Bh5 58.Kb1 Bg4 59.Ka1 Bh5 60.Ka2 Bg4 61.Kb1 Bh5 62.Kc1 Bg4 63.Kd1 Bh5 64.Ke1 Bg4 65.Kf1 Bh5 66.Kg1 Bg4 67.Kh2 Bh5 68.Kh3 g5 69.hxg5 Bg4+ 70.Kh2 Bh5 71.g6 Bg4 72.g7 Bh5 73.g8Q+ Be8 74.Bxf3#
+- (#74) Depth: 41/147 00:00:08 89309kN, tb=10606

[dangi12012]

1.Kh2 Bg4 2.Kg1 Bh5 3.Kf1 Bg4 4.Ke1 Bh5 5.Kd1 Bg4 6.Kc1 Bh5 7.Kb1 Bg4 8.Ka1 Bh5 9.Ka2 Bg4 10.Kb1 Bh5 11.Kc1 Bg4 12.Kd1 Bh5 13.Ke1 Bg4 14.Kf1 Bh5 15.Kg1 Bg4 16.Kh2 Bh5 17.Kh3 g6 18.Kh2 Bg4 19.Kg1 Bh5 20.Kf1 Bg4 21.Ke1 Bh5 22.Kd1 Bg4 23.Kc1 Bh5 24.Kb1 Bg4 25.Ka1 Bh5 26.Ka2 Bg4 27.Kb1 Bh5 28.Kc1 Bg4 29.Kd1 Bh5 30.Ke1 Bg4 31.Kf1 Bh5 32.Kg1 Bg4 33.Kh2 Bh5 34.Kh3 c5 35.Kh2 Bg4 36.Kg1 Bh5 37.Kf1 Bg4 38.Ke1 Bh5 39.Kd1 Bg4 40.Kc1 Bh5 41.Kb1 Bg4 42.Ka1 Bh5 43.Ka2 Bg4 44.Kb1 Bh5 45.Kc1 Bg4 46.Kd1 Bh5 47.Ke1 Bg4 48.Kf1 Bh5 49.Kg1 Bg4 50.Kh2 Bh5 51.Kh3 c4 52.Kh2 Bg4 53.Kg1 Bh5 54.Kf1 Bg4 55.Ke1 Bh5 56.Kd1 Bg4 57.Kc1 Bh5 58.Kb1 Bg4 59.Ka1 Bh5 60.Ka2 Bg4 61.Kb1 Bh5 62.Kc1 Bg4 63.Kd1 Bh5 64.Ke1 Bg4 65.Kf1 Bh5 66.Kg1 Bg4 67.Kh2 Bh5 68.Kh3 g5 69.hxg5 Bg4+ 70.Kh2 Bh5 71.g6 Bg4 72.g7 Bh5 73.g8Q+ Be8 74.Bxf3#
+- (#74) Depth: 41/147 00:00:08 89309kN, tb=10606

Which Engine did you use? For me its that with 32 Threads and SF14 -
71/119+ 07:05 30.569.527k 71.763k +12,32 Kh3-h2
71/119+ 07:29 32.469.906k 72.183k +13,50 Kh3-h2

[dangi12012]

Using stockfish-master built with CLANG:
Ryzen 5950X:

info depth 111 seldepth 19 multipv 1 score cp 1078 nodes 14536297483 nps 47242860 hashfull 994 tbhits 0 time 307693 pv h3h2 h5g4 h2g1 g4h5 g1f1 h5g4 f1e1 g4h5 e1d1 h5g4 d1c1 g4h5 c1b1 h5g4 b1a1 g4h5 a1a2 h5g4 a2b1

So where is the checkmate?

[Jouni]

SF clone Crystal.