Here one example showing matefinder name is well deserved. This is all 20 movers from Chest database (old version).
K4bk1/1r4p1/1qb2pnR/3p2NR/7r/7R/1p5n/QRRRRRRR w - - bm #20; 00:00;
1kr1n3/pp4nr/8/Q1PN1p2/6p1/5bPq/3R4/2BR2K1 w - - bm #20; 00:00 @ C3/R0/K6/P2/X5;
1r6/5q1r/1n4p1/2N2p2/p3p3/p1KpR1R1/b1B5/k7 w - - bm #20; 00:00 @ C0/R1/K2/P1/X2;
2n4k/2KB1ppp/1p3p2/p5Q1/4p1N1/Pbpr4/1Br3PR/1n1q4 w - - bm #20; 00:00 @ C2/R1/K3/P6/X25;
3K1B2/1p6/pp6/rk2N3/b1p5/1pP5/1P2P3/8 w - - bm #20; 00:00 @ C2/R0/K2/P1/X1;
3nn3/2p2p2/6p1/n1PB3n/3BK3/1P2N1P1/3pNPnk/3n3b w - - bm #20; 00:00 @ C3/R0/K2/P1/X1;
3nn3/2p2p2/6p1/n1PB3n/3BK3/1P2NRP1/3pNPnk/3n3b w - - bm #20; 00:00 @ C3/R0/K2/P1/X1;
4k3/2Q5/8/8/8/8/3p1pp1/3Kbrrb w - - bm #20; 00:00 @ C2/R0/K4/P1/X3;
4Q3/4p3/4b3/8/8/K7/p1r5/k7 w - - bm #20; 00:00 @ C0/R0/K3/P3/X8;
5K2/k7/1R4p1/1R1P4/3P4/5b2/5b2/5nq1 w - - bm #20; 00:00 @ C2/R1/K3/P0/X26;
6Qb/Pr5P/qP2b3/1R6/8/n6r/k6P/7K w - - bm #20; 00:00 @ C0/R1/K3/P5/X32;
7b/5p2/4pN1k/1p2P2P/1Pp5/K1p5/2P4B/8 w - - bm #20; 00:00 @ C2/R0/K2/P1/X1;
7k/prpp1K2/1P2p2q/7P/8/7p/3p3p/3Q4 w - - bm #20; 00:00 @ C0/R4/K3/P7/X31;
7Q/prpp1K1P/np6/8/8/5p2/pN3p2/k1b2r1b w - - bm #20; 00:00 @ C2/R1/K4/P9/X23;
8/1N6/p1R3p1/p2k1prb/p4Kpb/p5p1/P3P1P1/8 w - - bm #20; 00:00 @ C2/R0/K2/P1/X1;
8/1R1B4/K1p5/2p5/2p3p1/B7/p1p2p2/k7 w - - bm #20; 00:00 @ C2/R1/K2/P2/X8;
8/4p3/1K1pPp2/p2P1P2/BP2NP2/4p1p1/4pprb/4kbrn w - - bm #20; 00:00 @ C2/R0/K3/P1/X2;
8/4p3/3pPp2/pK1P1P2/1P2NP2/4p1p1/2B1pprb/4kbrn w - - bm #20; Duals(2); 00:00 @ C2/R0/K3/P1/X4;
8/8/8/8/1Q6/3k4/3p1pp1/3Kbrrb w - - bm #20; 00:00 @ C2/R0/K4/P1/X3;
8/K1p1pN2/n1B3p1/2kP1p2/P3p1P1/1pP5/1p1N1p2/1r6 w - - bm #20; 00:00 @ C2/R2/K2/P8/X23;
B2k4/KPpP4/n1Pb4/P5p1/5p2/5P2/8/8 b - - bm #20; 00:00 @ C2/R0/K3/P2/X2;
bbnK2Q1/8/1p1k4/r2P3q/P3P3/Pnp1p1p1/4PN2/8 w - - bm #20; 00:00 @ C3/R0/K3/P2/X2;
n2k4/1Kp2p2/2P2pp1/2B5/1p2R3/P2pp3/6p1/rb2bq2 w - - bm #20; 00:00 @ C0/R1/K3/P11/X31;
nB6/2p1p3/1p2Pp2/1P2kp2/2Kp1N2/1PpP1pP1/2P2P2/8 w - - bm #20; 00:00 @ C2/R0/K2/P2/X3;
Q7/6p1/bp4p1/kp6/8/1P6/6p1/6Kb w - - bm #20; 00:00 @ C2/R0/K2/P4/X11;
qb6/n6P/3B4/p7/8/p7/p7/k2K4 w - - bm #20; 00:00 @ C2/R1/K3/P2/X3;
r7/4r1P1/3Knb2/1RNR3B/5k1q/3P4/2b3P1/5N2 w - - bm #20; 00:00 @ C0/R4/K2/P1/X1;
rR4r1/6P1/8/8/p5Q1/k7/1p2n2K/qb6 w - - bm #20; 00:00 @ C3/R0/K2/P2/X2;
8/8/6k1/Q7/8/8/3p1pp1/3Kbrrb w - - bm #20; 00:00+ @ C2/R0/K6/P1/X5;
8/6p1/p7/rp1K2p1/kb3pP1/2p2p1b/P1Np1P2/3N2R1 w - - bm #20; 00:01 @ C0/R0/K1/P3/X9;
bqB2n1r/1P2p2p/1p2p3/2P1RP1k/4Pr1P/1P3n2/Kp3Np1/b1B2N1R w - - bm #20; 00:01 @ C0/R1/K4/P9/X46;
8/8/2k5/8/3p4/Qp1p4/pp1p4/rrbK4 w - - bm #20; 00:02 @ C2/R0/K7/P1/X6;
2B4k/1r2B1p1/1P2p3/pN1bn3/R7/8/2Q1R1p1/K2n1q2 w - - bm #20; 00:14 @ C2/R1/K5/P7/X39;
4K3/p5p1/p5p1/P1p3P1/B1P5/2P4p/6np/3R2bk w - - bm #20; 00:18+ @ C0/R0/K1/P1/X9;
1K4kB/6P1/6P1/3r4/8/1R6/B1PP4/7R w - - bm #20; 02:16 @ C0/R0/K3/P0/X15;
8/2p4Q/8/8/p7/K6p/2r5/1k6 w - - bm #20; --:-- @ C0/R16/K7/P4/X15;
8/p5p1/4p3/4Pp2/2R2P1K/3P1P2/pk1p4/qrbB4 w - - bm #20; --:-- @ C0/R0/K3/P3/X5;
8/RB6/8/8/8/5bP1/4Nprp/5Kbk w - - bm #20; --:-- @ C0/R0/K1/P2/X13;
Q1B5/P2Pn1p1/1rNpb3/2kn2p1/8/1P3P2/1NpBKPPp/b6q w - - bm #20; --:-- @ C0/R3/K5/P9/X41;
qrb5/rk1p4/p2P4/Pp6/1N2n3/6p1/5nBb/5K2 w - - bm #20; --:-- @ C0/R-12/K2/P3/X20; 00'29" (Gustav);
RN2r2k/6pP/6P1/5K2/8/8/6R1/8 w - - bm #20; --:-- @ C0/R-12/K4/P2/X14;
1rB2r1B/3pp1N1/3qp1n1/QRppp1K1/3b1Pp1/3bp3/4NPk1/1n1R4 w - - bm #20;
5K1k/1R1P4/8/b7/4r3/3B4/3p4/8 w - - bm #20;
7n/7P/8/8/8/7Q/5ppR/K4bkn w - - bm #20;
8/8/3p4/N2p4/1k6/p2K4/8/1B6 w - - bm #20;
qrr1b3/pn2p3/npppp1P1/4pP2/2P2BPp/PPN1P2B/4R2K/2k5 w - - bm #20;
I gave Houdini3 and SFMF one minute and 4 cores to solve. SF in study mode Houdini default (mate mode isn't better). Solved positions
Code: Select all
1 SH
2 SH
3 SH
4 SH
5 H
6 SH
7 SH
8
9 SH
10 SH
11 SH
12
13 SH
14 SH
15 S
16 SH
17 S
18 S
19 H
20 S
21 SH
22 SH
23 SH
24
25 SH
26 SH
27 SH
28 SH
29
30
31 SH
32 S
33 SH
34
35 SH
36
37
38
39 SH
40 S
41 S
42 H
43
44 S
45
46
Stockfish solved 31 and Houdini 26. BTW position 15 is actually mate in 17 as SF says!
[D]8/1N6/p1R3p1/p2k1prb/p4Kpb/p5p1/P3P1P1/8 w - - 0 1
Analysis by SF MF110416 64 bmi2:
+- (#17) Depth: 46/56 00:00:27 240mN, tb=36054
1.Rd6+ Kc4 2.Rd3 Kb4 3.Nd6 Kc5 4.Nf7 Kc6 5.Ne5+ Kc7 6.Rd1 Kc8 7.Rd7 Kb8 8.Nf7 Kc8 9.Re7 Kb8 10.Nd6 Ka8 11.Rc7 Kb8 12.Rb7+ Ka8 13.Rb1 Ka7 14.Nc4 Ka8 15.Nxa5 Ka7 16.Nc6+ Ka8 17.Rb8#