New Matefish 3.2 vs Stockfish (Arena3.5.1/Windows10) analysis mode

[chessica]

[d]5k2/pp3N2/5K2/5B2/8/8/8/8 w - - 0 33
#9 bd7!! only move

What problem does the matefish have to find the mate?

SFS-mpv-130424:
NNUE evaluation using nn-90f0299dcd87.nnue
NNUE evaluation using nn-0bc2a8bdeb02.nnue
...
35/26 00:18,144 2.166k 119k +M10 Lf5-d7 b7-b5 Sf7-g5 b5-b4 Sg5-h7+ Kf8-g8 Kf6-g6 b4-b3 Ld7-e6+ Kg8-h8 Le6xb3 a7-a5 Lb3-e6 a5-a4 Kg6-h6 a4-a3 Sh7-f8 a3-a2 Sf8-g6+
...

Stockfish-16.1:
NNUE evaluation using nn-baff1ede1f90.nnue
NNUE evaluation using nn-b1a57edbea57.nnue
...
45/44 00:28,966 9.357k 323k +M10 Lf5-d7 a7-a6 Sf7-e5 b7-b5 Se5-g6+ Kf8-g8 Ld7-e6+ Kg8-h7 Sg6-f8+ Kh7-h6 Le6-f7 b5-b4 Lf7-g6 b4-b3 Sf8-e6 b3-b2 Se6-d8 b2-b1D Sd8-f7+
...

Matefish-3.2:
Starting Alpha-Beta Search
1/28 00:00,002 0 0 0,00 Sf7-e5
3/2 00:00,002 151 76k 0,00 Sf7-e5
5/2 00:00,002 151 76k 0,00 Sf7-e5
7/2 00:00,002 151 76k 0,00 Sf7-e5
9/2 00:00,002 151 76k 0,00 Sf7-e5
No mate in 5 found
11/2 00:00,002 151 76k 0,00 Sf7-e5
No mate in 6 found
13/2 00:00,002 151 76k 0,00 Sf7-e5
No mate in 7 found
15/2 00:00,002 151 76k 0,00 Sf7-e5
No mate in 8 found
17/2 00:00,003 151 50k 0,00 Sf7-e5
No mate in 9 found
19/2 00:00,003 151 50k 0,00 Sf7-e5
No mate in 10 found
21/2 00:00,232 151 650 0,00 Sf7-e5
...
93/2 00:00,850 151 177 0,00 Sf7-e5
No mate in 47 found
95/2 00:00,850 151 177 0,00 Sf7-e5
No mate in 48 found
Failure! No mate found!
97/2 01:11,336 103.894k 1.456k 0,00 Sf7-e5
Bester Zug: Sf7-e5, Wert: 0,00, Tiefe: 97/2, Dauer: 01:11,370, 103.893.931 Knoten, 1.456k

[chessica]

[d]3K1nbr/1p3pp1/6kp/2p2p1R/1p3P2/3Pb3/p1Q1B3/R2N2B1 w - - 0 1

Matefish 3.0 64 by the Stockfish developers and J. Oster
position fen 3K1nbr/1p3pp1/6kp/2p2p1R/1p3P2/3Pb3/p1Q1B3/R2N2B1 w - - 0 1
setoption name PNS Hash value 1024
setoption name ProofNumberSearch value true
go mate 13
info string Starting Proof-Number Search ...
info time 849 multipv 1 depth 25 seldepth 25 nodes 609282 nps 717646 tbhits 0 score cp 0 pv h5g5
info time 1049 multipv 1 depth 25 seldepth 25 nodes 1215604 nps 1158821 tbhits 0 score cp 0 pv h5g5
info time 1249 multipv 1 depth 25 seldepth 25 nodes 1807687 nps 1447307 tbhits 0 score cp 0 pv h5g5
info time 1449 multipv 1 depth 25 seldepth 25 nodes 2401920 nps 1657639 tbhits 0 score cp 0 pv h5g5
info time 1649 multipv 1 depth 25 seldepth 25 nodes 3004987 nps 1822308 tbhits 0 score cp 0 pv h5g5
info time 1849 multipv 1 depth 25 seldepth 25 nodes 3604701 nps 1949540 tbhits 0 score cp 0 pv h5g5
info time 2049 multipv 1 depth 25 seldepth 25 nodes 4188870 nps 2044348 tbhits 0 score cp 0 pv h5g5
info time 3049 multipv 1 depth 25 seldepth 25 nodes 7103177 nps 2329674 tbhits 0 score cp 0 pv h5g5
info time 4049 multipv 1 depth 25 seldepth 25 nodes 9988414 nps 2466884 tbhits 0 score cp 0 pv h5g5
info time 5049 multipv 1 depth 25 seldepth 25 nodes 12898496 nps 2554663 tbhits 0 score cp 0 pv h5g5
info time 6049 multipv 1 depth 25 seldepth 25 nodes 15851284 nps 2620480 tbhits 0 score cp 0 pv h5g5
info time 7049 multipv 1 depth 25 seldepth 25 nodes 18843858 nps 2673266 tbhits 0 score cp 0 pv h5g5
info time 8049 multipv 1 depth 25 seldepth 25 nodes 21806852 nps 2709262 tbhits 0 score cp 0 pv h5g5
info time 9049 multipv 1 depth 25 seldepth 25 nodes 24764523 nps 2736713 tbhits 0 score cp 0 pv h5g5
info time 10049 multipv 1 depth 25 seldepth 25 nodes 27659978 nps 2752510 tbhits 0 score cp 0 pv h5g5
info time 12549 multipv 1 depth 25 seldepth 25 nodes 35038314 nps 2792120 tbhits 0 score cp 0 pv h5g5
info time 15049 multipv 1 depth 25 seldepth 25 nodes 42597791 nps 2830606 tbhits 0 score cp 0 pv h5g5
info time 17549 multipv 1 depth 25 seldepth 25 nodes 49991116 nps 2848658 tbhits 0 score cp 0 pv h5g5
info string Running out of memory ... <<<---
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Failure! No mate found!
info time 19357 multipv 1 depth 25 seldepth 25 nodes 55090593 nps 2846029 tbhits 0 score cp 0 pv h5g5
bestmove h5g5

Matefish 3.2 64 by the Stockfish developers and J. Oster
position fen 3K1nbr/1p3pp1/6kp/2p2p1R/1p3P2/3Pb3/p1Q1B3/R2N2B1 w - - 0 1
setoption name PNS Hash value 1024
setoption name ProofNumberSearch value true
go mate 13
info string Starting Proof-Number Search ...
info time 767 multipv 1 depth 25 seldepth 25 nodes 618811 nps 806794 tbhits 0 score cp 0 pv h5g5
info time 967 multipv 1 depth 25 seldepth 25 nodes 1221871 nps 1263568 tbhits 0 score cp 0 pv h5g5
info time 1167 multipv 1 depth 25 seldepth 25 nodes 1810102 nps 1551072 tbhits 0 score cp 0 pv h5g5
info time 1367 multipv 1 depth 25 seldepth 25 nodes 2415829 nps 1767248 tbhits 0 score cp 0 pv h5g5
info time 1567 multipv 1 depth 25 seldepth 25 nodes 3032743 nps 1935381 tbhits 0 score cp 0 pv h5g5
info time 1767 multipv 1 depth 25 seldepth 25 nodes 3641219 nps 2060678 tbhits 0 score cp 0 pv h5g5
info time 1967 multipv 1 depth 25 seldepth 25 nodes 4228965 nps 2149956 tbhits 0 score cp 0 pv h5g5
info time 2967 multipv 1 depth 25 seldepth 25 nodes 7103910 nps 2394307 tbhits 0 score cp 0 pv h5g5
info time 3967 multipv 1 depth 25 seldepth 25 nodes 10019451 nps 2525699 tbhits 0 score cp 0 pv h5g5
info time 4967 multipv 1 depth 25 seldepth 25 nodes 12983407 nps 2613933 tbhits 0 score cp 0 pv h5g5
info time 5967 multipv 1 depth 25 seldepth 25 nodes 15962996 nps 2675213 tbhits 0 score cp 0 pv h5g5
info time 6967 multipv 1 depth 25 seldepth 25 nodes 19015452 nps 2729360 tbhits 0 score cp 0 pv h5g5
info time 7967 multipv 1 depth 25 seldepth 25 nodes 22031626 nps 2765360 tbhits 0 score cp 0 pv h5g5
info time 8967 multipv 1 depth 25 seldepth 25 nodes 24828193 nps 2768840 tbhits 0 score cp 0 pv h5g5
info time 9967 multipv 1 depth 25 seldepth 25 nodes 27696331 nps 2778803 tbhits 0 score cp 0 pv h5g5
info time 12467 multipv 1 depth 25 seldepth 25 nodes 35180890 nps 2821921 tbhits 0 score cp 0 pv h5g5
info time 14967 multipv 1 depth 25 seldepth 25 nodes 42700400 nps 2852969 tbhits 0 score cp 0 pv h5g5
info time 17467 multipv 1 depth 25 seldepth 25 nodes 49973210 nps 2861007 tbhits 0 score cp 0 pv h5g5
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Running out of memory ...
info string Failure! No mate found!
info time 19261 multipv 1 depth 25 seldepth 25 nodes 55001341 nps 2855580 tbhits 0 score cp 0 pv h5g5
bestmove h5g5

[chessica]

[d]8/8/1p5R/k7/2B5/K7/8/8 b - - 1 33
#4

Matefish-3.2:
Starting Alpha-Beta Search
1 00:00,003 0 0 0,00 Th6xb6
3/6 00:00,003 178 59k 0,00 Th6xb6
Success! Mate in 4 found!
5/7 00:00,009 7k 776k +M4 Ld5-c4 b6-b5 Ka3-b3 b5xc4+ Kb3xc4 Ka5-a4 Th6-a6+
Bester Zug: Ld5-c4, Wert: +Matt in 4, Tiefe: 5/7, Dauer: 00:00,026, 6.985 Knoten, 776k

[chessica]

[d]8/8/1p5R/k7/2B5/K7/8/8 b - - 1 33
#4

Matefish-3.2:
Starting Alpha-Beta Search
1 00:00,003 0 0 0,00 Th6xb6
3/6 00:00,003 178 59k 0,00 Th6xb6
Success! Mate in 4 found!
5/7 00:00,009 7k 776k +M4 Ld5-c4 b6-b5 Ka3-b3 b5xc4+ Kb3xc4 Ka5-a4 Th6-a6+
Bester Zug: Ld5-c4, Wert: +Matt in 4, Tiefe: 5/7, Dauer: 00:00,026, 6.985 Knoten, 776k

[d]5R2/8/7b/p7/k1K4p/7p/1P5P/8 w - - 1 33

Matefish-3.2:
Starting Alpha-Beta Search
1/1 00:00,002 1 500 0,00 b2-b3+
3/4 00:00,002 99 50k 0,00 b2-b3+
Success! Mate in 4 found!
5/7 00:00,003 955 318k +M4 Tf8-f3 Lh6-e3 Tf3xh3 Le3-c5 Th3-a3+ Lc5xa3 b2-b3+
Bester Zug: Tf8-f3, Wert: +Matt in 4, Tiefe: 5/7, Dauer: 00:00,027, 955 Knoten, 318k

[chessica]

Matefish 3.2 64 by the Stockfish developers and J. Oster
position fen 6bQ/1p6/1P3P2/1p4P1/1N6/2k2nRp/P1Nrp2P/K3B1n1 w - - 1 33
setoption name PNS Hash value 1024
setoption name ProofNumberSearch value true
go mate 4
info string Starting Proof-Number Search ...
info string Success! Mate in 4 found!
info time 617 multipv 1 depth 7 seldepth 7 nodes 119 nps 192 tbhits 0 score mate 4 pv f6f7 c3c4 h8c3 c4c3 f7g8r c3c4 g8c8
bestmove f6f7 ponder c3c4
setoption name PNS Hash value 512
go mate 4
info string Starting Proof-Number Search ...
info string Success! Mate in 4 found!
info time 308 multipv 1 depth 7 seldepth 7 nodes 119 nps 386 tbhits 0 score mate 4 pv f6f7 c3c4 h8c3 c4c3 f7g8r c3c4 g8c8
bestmove f6f7 ponder c3c4
setoption name PNS Hash value 256
go mate 4
info string Starting Proof-Number Search ...
info string Success! Mate in 4 found!
info time 155 multipv 1 depth 7 seldepth 7 nodes 119 nps 767 tbhits 0 score mate 4 pv f6f7 c3c4 h8c3 c4c3 f7g8r c3c4 g8c8
bestmove f6f7 ponder c3c4
setoption name PNS Hash value 1024
go mate 4
info string Starting Proof-Number Search ...
info string Success! Mate in 4 found!
info time 581 multipv 1 depth 7 seldepth 7 nodes 119 nps 204 tbhits 0 score mate 4 pv f6f7 c3c4 h8c3 c4c3 f7g8r c3c4 g8c8
bestmove f6f7 ponder c3c4

[chessica]

Matefish 3.2 64 by the Stockfish developers and J. Oster
position fen 6bQ/1p6/1P3P2/1p4P1/1N6/2k2nRp/P1Nrp2P/K3B1n1 w - - 1 33
setoption name PNS Hash value 1024
setoption name ProofNumberSearch value true
go mate 4
info string Starting Proof-Number Search ...
info string Success! Mate in 4 found!
info time 617 multipv 1 depth 7 seldepth 7 nodes 119 nps 192 tbhits 0 score mate 4 pv f6f7 c3c4 h8c3 c4c3 f7g8r c3c4 g8c8
bestmove f6f7 ponder c3c4
setoption name PNS Hash value 512
go mate 4
info string Starting Proof-Number Search ...
info string Success! Mate in 4 found!
info time 308 multipv 1 depth 7 seldepth 7 nodes 119 nps 386 tbhits 0 score mate 4 pv f6f7 c3c4 h8c3 c4c3 f7g8r c3c4 g8c8
bestmove f6f7 ponder c3c4
setoption name PNS Hash value 256
go mate 4
info string Starting Proof-Number Search ...
info string Success! Mate in 4 found!
info time 155 multipv 1 depth 7 seldepth 7 nodes 119 nps 767 tbhits 0 score mate 4 pv f6f7 c3c4 h8c3 c4c3 f7g8r c3c4 g8c8
bestmove f6f7 ponder c3c4
setoption name PNS Hash value 1024
go mate 4
info string Starting Proof-Number Search ...
info string Success! Mate in 4 found!
info time 581 multipv 1 depth 7 seldepth 7 nodes 119 nps 204 tbhits 0 score mate 4 pv f6f7 c3c4 h8c3 c4c3 f7g8r c3c4 g8c8
bestmove f6f7 ponder c3c4



6bQ/1p6/1P3P2/1p4P1/1N6/2k2nRp/P1Nrp2P/K3B1n1 w - - 1 33

Matefish-3.2:
Starting Alpha-Beta Search
1/1 00:00,002 5 3k 0,00 f6-f7+
3/7 00:00,005 3k 597k 0,00 f6-f7+
Success! Mate in 4 found!
5/7 00:00,005 3k 601k +M4 f6-f7+ Kc3-c4 Dh8-c3+ Kc4xc3 f7xg8T Kc3-c4 Tg8-c8+
Bester Zug: f6-f7, Wert: +Matt in 4, Tiefe: 5/7, Dauer: 00:00,027, 3.004 Knoten, 601k

[chessica]

[d]7R/6K1/8/8/8/8/8/k7 w - - 0 33
#10, 2 solutions

Matefish 3.2 64 by the Stockfish developers and J. Oster

position fen 7R/6K1/8/8/8/8/8/k7 w - - 0 33
setoption name PNS Hash value 32
setoption name ProofNumberSearch value true
go mate 10
info string Starting Proof-Number Search ...
info time 217 multipv 1 depth 19 seldepth 19 nodes 1089465 nps 5020576 tbhits 0 score cp 0 pv h8h1
info string Success! Mate in 10 found!
info time 260 multipv 1 depth 19 seldepth 19 nodes 1291557 nps 4967526 tbhits 0 score mate 10 pv h8h2 a1b1 g7f6 b1c1 f6e5 c1d1 e5d4 d1c1 d4c3 c1d1 h2a2 d1e1 c3d3 e1f1 d3e3 f1g1 e3f3 g1f1 a2a1
bestmove h8h2 ponder a1b1