Mate in 17

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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Mate in 17

Post by zullil »

Vinvin wrote: ↑Wed Aug 14, 2019 10:54 pm
zullil wrote: ↑Wed Aug 14, 2019 10:09 pm
Vinvin wrote: ↑Wed Aug 14, 2019 8:53 pm Update in 2019:
After playing the moves 1. Rg3 Bg8 2. Kh4 Bh7 3. Kh5 Bg8, SF finds a mate but not the shortest :

[d]1N1n2b1/2BPbpP1/3r1p2/2p1kP1K/2p1p1P1/2p1P1R1/p1P4P/3R1N1q w - - 6 4

Code: Select all

Stockfish_19072603_x64_modern:
Found 511 tablebases
...
 56/68+	05:42	4 284 084 501	12 523 999	+148,34	4.Kh6
 56/72	05:58	4 499 176 730	12 552 315	+M28	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Bxd6+ Bxd6 10.Na4 Qxf1 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Nxg8 Bxg7+ 17.Kxg7 Nb7 18.Nf6 Kc6 19.Rgg1 Nd6 20.Rxd6+ Kxd6 21.c3 Kc7 22.Rb1 Kd6 23.Ng8 Kc7 24.Kxf7 Kd7 25.Kg6 Kc7 26.f6 Kd7 27.f7 Kc7 28.f8Q Kd7 29.Qc5 Ke6 30.Qc6+ Ke5 31.Rb5+
 57/56	06:11	4 674 143 379	12 569 733	+M26	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be7 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Nxg8 Nc6 17.Nf6 Bxf6 18.g8Q Be7 19.Qxf7 Kb6 20.f6 Bc5 21.Rb1+ Nb4 22.Qxc4 Bf8+ 23.Kh5 Bc5 24.Rxb4+ Bxb4 25.Qxb4+ Kc6 26.f7 Kd7 27.f8Q Kc7 28.Qfd6+ Kc8 29.Qbb8+
 58/50	06:14	4 706 803 789	12 565 348	+M25	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Rxd8 Kxd8 17.Nxg8 Kc7 18.Nf6 Bxf6 19.g8Q Bc3 20.Qxf7+ Kd6 21.Rg1 Bd2 22.Rd1 Kc5 23.Qc7+ Kb4 24.Qd6+ Ka4 25.Rxd2 c3 26.Rd1 Kb5 27.Rb1+ Kc4 28.Rb4+
 59/50	06:19	4 768 782 238	12 564 140	+M25	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Rxd8 Kxd8 17.Nxg8 Bxg7+ 18.Kxg7 Kd7 19.Kxf7 Kd6 20.Kg7 Kc6 21.f6 Kd7 22.Rg1 Kc7 23.f7 Kd7 24.f8Q c3 25.Rd1+ Kc6 26.Qc8+ Kb6 27.Rb1+ Ka7 28.Qb7+
 60/50	06:29	4 891 613 185	12 548 872	+M25	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Rxd8 Kxd8 17.Nxg8 Bxg7+ 18.Kxg7 Kd7 19.Kxf7 Kd6 20.Kg7 Kc6 21.f6 Kd7 22.Rg1 Kc7 23.f7 Kd7 24.f8Q c3 25.Rd1+ Kc6 26.Qc8+ Kb6 27.Rb1+ Ka7 28.Qb7+
 61/50	06:34	4 951 194 128	12 541 018	+M25	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Rxd8 Kxd8 17.Nxg8 Bxg7+ 18.Kxg7 Kd7 19.Kxf7 Kd6 20.Kg7 Kc6 21.f6 Kd7 22.Rg1 Kc7 23.f7 Kd7 24.f8Q c3 25.Rd1+ Kc6 26.Qc8+ Kb6 27.Rb1+ Ka5 28.Qa8+
 62/50	06:40	5 022 164 626	12 535 292	+M25	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Rxd8 Kxd8 17.Nxg8 Bxg7+ 18.Kxg7 Kd7 19.Kxf7 Kd6 20.Kg7 Kc6 21.f6 Kd7 22.Rg1 Kc7 23.f7 Kd7 24.f8Q c3 25.Rd1+ Kc6 26.Qc8+ Kb5 27.Rb1+ Ka4 28.Qa6+
 63/50	06:48	5 112 989 647	12 525 052	+M25	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Rxd8 Kxd8 17.Nxg8 Bxg7+ 18.Kxg7 Kd7 19.Kxf7 Kd6 20.Kg7 Kc6 21.f6 Kd7 22.Rg1 Kc7 23.f7 Kd7 24.f8Q c3 25.Rd1+ Kc6 26.Qc8+ Kb5 27.Rb1+ Ka4 28.Qa6+
 64/50	07:00	5 255 281 754	12 505 221	+M25	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Rxd8 Kxd8 17.Nxg8 Bxg7+ 18.Kxg7 Kd7 19.Kxf7 Kd6 20.Kg7 Kc6 21.f6 Kd7 22.Rg1 Kc7 23.f7 Kd7 24.f8Q c3 25.Rd1+ Kc6 26.Qc8+ Kb5 27.Rb1+ Ka4 28.Qa6+
 65/50	07:17	5 446 906 827	12 448 223	+M25	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Rxd8 Kxd8 17.Nxg8 Bxg7+ 18.Kxg7 Kd7 19.Kxf7 Kd6 20.Kg7 Kc6 21.f6 Kd7 22.Rg1 Kc7 23.f7 Kd7 24.f8Q c3 25.Rd1+ Kc6 26.Qc8+ Kb5 27.Rb1+ Ka4 28.Qa6+
 66/50	07:24	5 529 041 294	12 436 969	+M25	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Rxd8 Kxd8 17.Nxg8 Bxg7+ 18.Kxg7 Kd7 19.Kxf7 Kd6 20.Kg7 Kc6 21.f6 Kd7 22.Rg1 Kc7 23.f7 Kd7 24.f8Q c3 25.Rd1+ Kc6 26.Qc8+ Kb6 27.Rb1+ Ka7 28.Qb7+
 67/50	07:51	5 852 367 598	12 423 246	+M25	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Rxd8 Kxd8 17.Nxg8 Bxg7+ 18.Kxg7 Kd7 19.Kxf7 Kd6 20.Kg7 Kc6 21.f6 Kd7 22.Rg1 Kc7 23.f7 Kd7 24.f8Q c3 25.Rd1+ Kc6 26.Qc8+ Kb6 27.Rb1+ Ka5 28.Qa8+
 68/50	08:43	6 507 330 948	12 419 091	+M25	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Rxd8 Kxd8 17.Nxg8 Bxg7+ 18.Kxg7 Kd7 19.Kxf7 Kd6 20.Kg7 Kc6 21.f6 Kd7 22.Rg1 Kc7 23.f7 Kd7 24.f8Q c3 25.Rd1+ Kc6 26.Qc8+ Kb6 27.Rb1+ Ka5 28.Qa8+
 69/50	09:39	7 203 917 877	12 425 711	+M25	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Rxd8 Kxd8 17.Nxg8 Bxg7+ 18.Kxg7 Kd7 19.Kxf7 Kd6 20.Kg7 Kc6 21.f6 Kd7 22.Rg1 Kc7 23.f7 Kd7 24.f8Q c3 25.Rd1+ Kc6 26.Qc8+ Kb6 27.Rb1+ Ka5 28.Qa8+
 70/50	09:43	7 246 158 351	12 422 695	+M25	4.Kh6 a1Q 5.Rxa1 Kd5 6.Rd1+ Ke5 7.Na6 Nb7 8.Nxc5 Nd8 9.Na4 Qxf1 10.Bxd6+ Bxd6 11.Rxf1 Kd5 12.Rd1+ Kc6 13.Nxc3 Be5 14.Nd5 Kxd7 15.Nxf6+ Kc7 16.Rxd8 Kxd8 17.Nxg8 Bxg7+ 18.Kxg7 Kd7 19.Kxf7 Kd6 20.Kg7 Kc6 21.f6 Kd7 22.Rg1 Kc7 23.f7 Kd7 24.f8Q c3 25.Rd1+ Kc6 26.Qc8+ Kb6 27.Rb1+ Ka7 28.Qb7+
Is this from Cfish-dev minimal?

info depth 89 seldepth 35 multipv 1 score mate 14 nodes 85794441978 nps 55735069 hashfull 1000 tbhits 0 time 1539326 pv h5h6 h1f3 g3f3 e4f3 f1g3 f3f2 h2h3 f2f1r d1f1 e5d5 f1d1 d5e5 h3h4 a2a1r d1a1 d8e6 b8c6 e5d5 c6e7 d5e5 d7d8q e6c7 d8c7 g8h7 c7c5 d6d5 c5d5
No, it's mate in 17 from the beginning :
1. Rg3 Bg8 2. Kh4 Bh7 3. Kh5 Bg8 4. Kh6 Qf3 5. Rxf3 exf3 6. Ng3 f2 7. h3 a1=Q 8. Rxa1 Kd5 9. Rd1+ Ke5 10. h4 Bh7 11. Kxh7 f1=Q 12. Rxf1 Ne6 13. Nc6+ Kd5 14. Nxe7+ Ke5 15. d8=N Nxd8 16. Rf4 Nc6 17. Re4#
OK, so Cfish-dev has correctly found a minimal mate-in-14 for the position you posted.
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lech
Posts: 1136
Joined: Sun Feb 14, 2010 10:02 pm

Re: Mate in 17

Post by lech »

Ignacio wrote: ↑Mon Nov 03, 2014 10:16 am [d]1N1n4/2BPbpPb/3r1p2/2p1kP2/2p1p1P1/2p1P2K/p1P3RP/3R1N1q w - - 0 1
This position is mate in 17 with 1.Rg3 but is very hard for engines.
Can your engine find it?

Ignacio.
If you try to solve a mate x position by engines, let it be the only one way to win.
In other case engines can keep the fastest (giving high score) solution.
Here it is the winning move 1.Na6 too.
Maybe, I can't be friendly, but let me be useful.
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MikeB
Posts: 4889
Joined: Thu Mar 09, 2006 6:34 am
Location: Pen Argyl, Pennsylvania

Re: Mate in 17

Post by MikeB »

Ignacio wrote: ↑Mon Nov 03, 2014 10:16 am [D]1N1n4/2BPbpPb/3r1p2/2p1kP2/2p1p1P1/2p1P2K/p1P3RP/3R1N1q w - - 0 1
This position is mate in 17 with 1.Rg3 but is very hard for engines.
Can your engine find it?

Ignacio.
why ? almost any move wins

Code: Select all

 20	+100.00 	3.06G	1:40.58	Kg3 Bg8 Kh3 Bh7 Rg3 a1=Q Rxa1 Bg8 Rd1 Bh7 Kh4 Qxf1 Rxf1 Kd5 Rd1+ Ke5 Kh3 Bg8 Rg2 Bh7 Ra1 Bxf5 gxf5 Kxf5 g8=Q Ke5 Bxd8 Ke6 Rg3 Rd5 Bxe7 Rh5+ Kg4 Rg5+ Qxg5 Kxe7 Qxc5+ Kd8 Qxc4 
 20	+99.99 	3.26G	1:46.75	Rg3 Bg8 Kh4 Qf3 Rxf3 exf3 Ng3 f2 Kh3 f1=R Rxf1 Bh7 Rd1 Bg8 Kh4 Bh7 Kh5 a1=R Rxa1 Bg6+ Kh6 Bh5 gxh5 Ne6 fxe6 f5 Bxd6+ Kxd6 Ra6+ Ke5 Nc6+ Kxe6 d8=N+ Bxd8 Nxd8+ Kd7 g8=Q 
 19	+99.99 	2.50G	1:22.45	Kg3 Bg8 Kh3 Bh7 Rg3 Bg8 Kh4 Qf3 Rxf3 exf3 Ng3 f2 Kh3 Bh7 Kg2 f1=Q+ Kxf1 Bg8 Kf2 Bh7 Kg2 Bg8 Kf3 a1=Q Rxa1 Ne6 Nc6+ Kd5 Nxe7+ Ke5 Bxd6+ Kxd6 Nxg8 Kc7 d8=Q+ Nxd8 Nxf6 Kc8 g8=Q Kc7 Nd5+ Kd7 Rd1 Nc6 Qxf7+ Kc8 Nxc3 
 19	+99.98 	2.73G	1:30.01	Rg3 Qf3 Rxf3 exf3 Ng3 Bg8 Kh4 a1=R Rxa1 Kd5 Rd1+ Ke5 Kh5 Bh7 h3 f2 Kh6 f1=Q Rxf1 Bg8 h4 Bh7 Kxh7 Ne6 Nc6+ Kd5 Nxe7+ Ke5 Bxd6+ Kxd6 g8=Q Kxd7 fxe6+ Kxe7 Qxf7+ Kd6 Qxf6 
 19	+99.95 	2.73G	1:29.88	Rc1 Kd5 Rd1+ Ke5 Rg3 Qf3 Rxf3 exf3 Ng3 Bg8 Kh4 Bh7 Kh5 f2 Kh6 f1=Q Rxf1 Bg6 g8=Q a1=Q Qe8 Kd5 Qxe7 Re6 Rxa1 Bxf5 Rd1+ Bd3 Qxd8 
 19	+98.10 	2.74G	1:30.23	Na6 a1=R Rxa1 Kd5 Nb8 Ne6 Rd1+ Nd4 exd4 Qxf1 Rxf1 Rxd7 Nxd7 Kc6 Nxc5 Kxc7 Nxe4 Kc6 Nxc3 Bg8 Ne4 Kd5 c3 
 19	+97.26 	1.16G	0:37.99	Rf2 Bg8 Na6 Bh7 Rg2 Bg8 Nxc5 Bh7 Na4 a1=R Rxa1 Kd5 Rd1+ Kc6 Bxd6 Bxd6 Nxc3 Be5 Nxe4 Bg8 Nf2 Qxf1 Rxf1 Kxd7 Rb1 Ne6 fxe6+ Kxe6 Rb4 c3 Ne4 Kd7 Nxc3 Bxc3 
 19	+97.17 	1.05G	0:34.54	Re1 Bg8 Rd1 Bh7 Na6 Bg8 Nxc5 Bh7 Na4 a1=R Rxa1 Kd5 Rd1+ Kc6 Bxd6 Bxd6 Nxc3 Bg8 Nxe4 Be5 Nf2 Qxf1 Rxf1 Kxd7 Rb1 Ne6 Rb7+ Kd8 Ra7 Bb8 Ra8 Kc8 fxe6 fxe6 Rxb8+ Kxb8 Ne4 f5 gxf5 Kc7 f6 Kb6 
 19	+96.56 	719.8M	0:23.20	Ra1 Bg8 Rd1 Bh7 Na6 Bg8 Nxc5 Bh7 Na4 a1=R Rxa1 Kd5 Nxc3+ Kc6 Bxd6 Bxd6 Rd1 Be5 Nxe4 Bg8 Nf2 Qxf1 Rxf1 Kxd7 Rd1+ Ke7 Ne4 c3 Nf2 Ne6 fxe6 fxe6 Nd3 Bc7 Rc1 
 19	+95.61 	2.74G	1:30.33	Re2 Qf3+ Ng3 Bg8 Kh4 Bh7 h3 Bg8 Ra1 Kd5 Nh5 Nc6 Nf4+ Qxf4 exf4 Nd4 Bxd6 Bd8 Bxc5 Nxe2 Be3 Kd6 Rxa2 Kd5 Ra4 Nxf4 Bxf4 e3 Bxe3 Be7 Nc6 
 19	+86.43 	2.77G	1:31.31	g8=B Bxg8 Na6 Bh7 Nxc5 a1=Q Rxa1 Kd5 Bxd6 Bxd6 Nxe4 Kxe4 Ng3+ Bxg3 Rxh1 Bc7 Ra1 Bb6 Ra6 Bxe3 Ra8 Bb6 Re2+ Kd5 Re8 Nc6 Rac8 
 19	+84.68 	2.76G	1:30.98	g8=N Bxg8 Na6 Bh7 Nxc5 Bg8 Na4 a1=R Rxa1 Kd5 Bxd6 Bxd6 Nxc3+ Kc6 Rd1 Be5 Ng3 Qxg2+ Kxg2 Bxc3 Nxe4 Be5 h4 Kb5 Kf3 Kc6 h5 Kc7 Kg2 Kc6 h6 Kc7 Kf3
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