How many engines will Sacrifice the Rook to win?

Discussion of anything and everything relating to chess playing software and machines.

Moderators: hgm, Rebel, chrisw

Chessqueen
Posts: 5582
Joined: Wed Sep 05, 2018 2:16 am
Location: Moving
Full name: Jorge Picado

How many engines will Sacrifice the Rook to win?

Post by Chessqueen »

There might be a quicker win, but by sacrificing the Rook show that some engine are not too materialistic. Please do NOT use any endgame EGTB :roll:

[d]8/5p2/4p3/p1K5/P2P3r/8/6k1/8 b - - 0 1
Do NOT worry and be happy, we all live a short life :roll:
Top
mhouppin
Posts: 115
Joined: Wed Feb 12, 2020 5:00 pm
Full name: Morgan Houppin

Re: How many engines will Sacrifice the Rook to win?

Post by mhouppin »

Chessqueen wrote: ↑Sat May 08, 2021 9:25 pm There might be a quicker win, but by sacrificing the Rook show that some engine are not too materialistic. Please do NOT use any endgame EGTB :roll:

[d]8/5p2/4p3/p1K5/P2P3r/8/6k1/8 b - - 0 1
Latest version of Stash, 1 thread, 1 GB hash:

Code: Select all

FEN: 8/5p2/4p3/p1K5/P2P3r/8/6k1/8 b - - 0 1

Stash v30.0:
 1/1	00:00	 27	27k	+9,99	1. ... Kf3
 2/2	00:00	 94	94k	+10,23	1. ... Kf3 2.Kb6
 3/4	00:00	 449	449k	+9,77	1. ... Kg3 2.Kb6 Rh5
 4/5	00:00	 964	964k	+9,84	1. ... Rh5+ 2.Kc6 Rg5 3.Kb6
 5/5	00:00	 1k	687k	+9,91	1. ... Rh5+ 2.Kc6 Rg5 3.Kb7 Rg4
 6/6	00:00	 3k	903k	+10,50	1. ... Rh5+ 2.Kc4 Kf3 3.Kc3 Rh3 4.Kc4
 7/8	00:00	 5k	970k	+10,49	1. ... Rh5+ 2.Kc4 Kf3 3.Kd3 Rh2 4.Kc3 Re2
 8/9	00:00	 7k	983k	+11,08	1. ... Rh5+ 2.Kc4 Kf3 3.Kd3 Rd5 4.Kc3 Ke3 5.Kc4
 9/10	00:00	 12k	1 202k	+11,09	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.d5 Rxd5 5.Kc6 Kf3
 10/10	00:00	 17k	1 193k	+11,30	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.d5 Rxd5 5.Kb6 Kf3 6.Kc6
 11/13	00:00	 26k	1 309k	+11,48	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.Kd6 Rd5+ 5.Kc6 Kxd4 6.Kb7 Ke3 7.Kb6 Rh5
 12/15	00:00	 51k	1 381k	+12,12	1. ... Rh5+ 2.Kc4 Kf3 3.Kd3 Rd5 4.Kc3 Ke3 5.Kc4 Ke4 6.Kc3 Rxd4 7.Kb3
 13/18	00:00	 64k	1 413k	+19,16	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.d5 exd5 5.Kc6 d4 6.Kd7 d3 7.Ke8 d2
 14/17	00:00	 77k	1 433k	+107,51	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.Kb6 Kxd4 5.Kc7 Kc5 6.Kd7 Kc4 7.Ke8 Kb3 8.Kxf7 Kxa4 9.Kxe6
 15/20	00:00	 138k	1 449k	+107,71	1. ... Rh5+ 2.Kc6 Kf3 3.Kb7 Ke4 4.Kc6 Kxd4 5.Kd6 Rc5 6.Ke7 Rc4 7.Kxf7 Rxa4 8.Kxe6 Ra1 9.Kd6 Ke4
 16/21	00:00	 225k	1 605k	+107,71	1. ... Rh5+ 2.Kd6 Rd5+ 3.Ke7 Rxd4 4.Kxf7 Rxa4 5.Kxe6 Ra1 6.Kd5 Kf3 7.Kc6 Ke4 8.Kd6 Rc1 9.Ke7 Kf5
 17/21	00:00	 308k	1 718k	+107,77	1. ... Rh5+ 2.Kd6 Rd5+ 3.Ke7 Rxd4 4.Kxf7 Rxa4 5.Kxe6 Ra1 6.Kd5 Kf3 7.Kc6 Ke4 8.Kd6 Rc1 9.Ke7 Kd5 10.Kf6 Rf1+ 11.Ke7 Kc6
 18/26	00:00	 934k	1 893k	+108,76	1. ... Kf3 2.d5 exd5 3.Kxd5 Rxa4 4.Ke5 Rf4 5.Kd5 Rf5+ 6.Kc6 Ke4 7.Kd7 Ke5 8.Ke7 Rf4 9.Kd7 Rd4+ 10.Ke7 f6 11.Ke8 Ke6
 19/27	00:00	 1 435k	2 132k	+109,71	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Ke4 6.Kb6 Kxd4 7.Kc6 Kc3 8.Kc7 Kb3 9.Kb6 Kxa4 10.Kc6 Kb4 11.Kc7
 20/22	00:00	 1 661k	2 217k	+109,71	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Ke4 6.Kb6 Kxd4 7.Kb7 Ke4 8.Kb8 Rd4 9.Kc7 Kf3 10.Kb6 Rxa4 11.Kb7 Ra1 12.Kb8
 21/30	00:00	 2 207k	2 468k	+114,33	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kc7 Rxd4 5.Kb6 Rxa4 6.Kb5 Rf4 7.Kxa5 Kf2 8.Kb6 e5 9.Kc7 e4 10.Kd6 e3 11.Ke5 e2 12.Kxf4 e1Q 13.Kf5 Kf3
 22/36	00:01	 2 929k	2 655k	+120,43	1. ... Kf3 2.Kd6 Rxd4+ 3.Ke7 Rxa4 4.Kxf7 Re4 5.Ke8 a4 6.Ke7 a3 7.Kf6 a2 8.Ke7 a1Q 9.Kd7 Qa7+ 10.Kd6 Kf4 11.Kc6 Re5 12.Kd6 Ke4 13.Kc6
 23/34	00:01	 5 787k	3 406k	+121,24	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Kb3 8.Kb6 Kxa4 9.Ka7 Kb3 10.Kb6 a4 11.Kb7 Kb4 12.Kc7 a3 13.Kc8 Kb3 14.Kb8 a2 15.Kc8
 24/30	00:01	 6 285k	3 455k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Rc5 8.Kb7 Kb4 9.Kb6 Rd5 10.Kc6 Kb3 11.Kb6 Kb2 12.Ka6 Ka3 13.Ka7 Kb4 14.Kb6 Kb3 15.Kc7 Ka3 16.Kc8
 25/30	00:01	 6 978k	3 517k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Rc5 8.Kb7 Kb4 9.Kb6 Rd5 10.Kc6 Kb3 11.Kb6 Kb2 12.Ka6 Ka3 13.Ka7 Kb4 14.Kb6 Kb3 15.Kc7 Ka3 16.Kc8
 26/30	00:02	 8 085k	3 601k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Rc5 8.Kb7 Kb4 9.Kb6 Rd5 10.Kc6 Kb3 11.Kb6 Kb2 12.Ka6 Ka3 13.Ka7 Kb4 14.Kb6 Kb3 15.Kc7 Kc3 16.Kb7
 27/31	00:02	 9 258k	3 650k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Rc5 8.Kb7 Kb3 9.Kb8 Rd5 10.Ka7 Rh5 11.Kb8 Kc3 12.Kc7 Rd5 13.Kb7 Kd4 14.Kc7 Ke4 15.Kb6 Kd4
 28/36	00:02	 10 615k	3 696k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Rd6 7.Ka8 Kd3 8.Ka7 Ke4 9.Ka8 Kd4 10.Kb7 Kc3 11.Kc7 Rd5 12.Kb7 Kb2 13.Kb6 Kb3 14.Ka7 Kc4 15.Kb7 Kb4 16.Kb6 Rd7 17.Kc6 Rd5
 29/42	00:04	 17 112k	3 972k	+M22	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 Kc3 7.Kb7 Kb3 8.Kc7 Kxa4 9.Kb6 Kb4 10.Kc6 a4 11.Kb6 a3 12.Kc6 Kb3 13.Kc7 a2 14.Kc8 a1Q 15.Kb7 Kb4 16.Kb6 Qa8 17.Kc7
 30/38	00:06	 25 908k	4 078k	+M13	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 e5 7.Kb6 e4 8.Ka6 e3 9.Kb6 e2 10.Ka6 e1Q 11.Ka7 Qe6 12.Kb7 Rd7+ 13.Kc8 Qe8+
 31/26	00:08	 35 345k	4 127k	+M13	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 e5 7.Kb6 e4 8.Ka6 e3 9.Kb6 e2 10.Ka6 e1Q 11.Ka7 Qe6 12.Kb7 Rd7+ 13.Kc8 Qe8+
 32/26	00:11	 47 391k	4 171k	+M13	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 e5 7.Kb6 e4 8.Ka6 e3 9.Kb6 e2 10.Ka6 e1Q 11.Ka7 Qe6 12.Kb7 Rd7+ 13.Kc8 Qe8+
 33/26	00:16	 68 127k	4 047k	+M13	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 e5 7.Kb6 e4 8.Ka6 e3 9.Kb6 e2 10.Ka6 e1Q 11.Ka7 Qe6 12.Kb7 Rd7+ 13.Kc8 Qe8+
 34/26	00:33	 138 503k	4 128k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 35/22	00:38	 160 110k	4 154k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 36/22	00:44	 185 762k	4 193k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 37/22	00:52	 222 718k	4 258k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 38/22	01:02	 271 714k	4 320k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 39/22	01:16	 335 082k	4 407k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
Top
Chessqueen
Posts: 5582
Joined: Wed Sep 05, 2018 2:16 am
Location: Moving
Full name: Jorge Picado

Re: How many engines will Sacrifice the Rook to win?

Post by Chessqueen »

mhouppin wrote: ↑Sat May 08, 2021 10:18 pm
Chessqueen wrote: ↑Sat May 08, 2021 9:25 pm There might be a quicker win, but by sacrificing the Rook show that some engine are not too materialistic. Please do NOT use any endgame EGTB :roll:

[d]8/5p2/4p3/p1K5/P2P3r/8/6k1/8 b - - 0 1
Latest version of Stash, 1 thread, 1 GB hash:

Code: Select all

FEN: 8/5p2/4p3/p1K5/P2P3r/8/6k1/8 b - - 0 1

Stash v30.0:
 1/1	00:00	 27	27k	+9,99	1. ... Kf3
 2/2	00:00	 94	94k	+10,23	1. ... Kf3 2.Kb6
 3/4	00:00	 449	449k	+9,77	1. ... Kg3 2.Kb6 Rh5
 4/5	00:00	 964	964k	+9,84	1. ... Rh5+ 2.Kc6 Rg5 3.Kb6
 5/5	00:00	 1k	687k	+9,91	1. ... Rh5+ 2.Kc6 Rg5 3.Kb7 Rg4
 6/6	00:00	 3k	903k	+10,50	1. ... Rh5+ 2.Kc4 Kf3 3.Kc3 Rh3 4.Kc4
 7/8	00:00	 5k	970k	+10,49	1. ... Rh5+ 2.Kc4 Kf3 3.Kd3 Rh2 4.Kc3 Re2
 8/9	00:00	 7k	983k	+11,08	1. ... Rh5+ 2.Kc4 Kf3 3.Kd3 Rd5 4.Kc3 Ke3 5.Kc4
 9/10	00:00	 12k	1 202k	+11,09	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.d5 Rxd5 5.Kc6 Kf3
 10/10	00:00	 17k	1 193k	+11,30	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.d5 Rxd5 5.Kb6 Kf3 6.Kc6
 11/13	00:00	 26k	1 309k	+11,48	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.Kd6 Rd5+ 5.Kc6 Kxd4 6.Kb7 Ke3 7.Kb6 Rh5
 12/15	00:00	 51k	1 381k	+12,12	1. ... Rh5+ 2.Kc4 Kf3 3.Kd3 Rd5 4.Kc3 Ke3 5.Kc4 Ke4 6.Kc3 Rxd4 7.Kb3
 13/18	00:00	 64k	1 413k	+19,16	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.d5 exd5 5.Kc6 d4 6.Kd7 d3 7.Ke8 d2
 14/17	00:00	 77k	1 433k	+107,51	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.Kb6 Kxd4 5.Kc7 Kc5 6.Kd7 Kc4 7.Ke8 Kb3 8.Kxf7 Kxa4 9.Kxe6
 15/20	00:00	 138k	1 449k	+107,71	1. ... Rh5+ 2.Kc6 Kf3 3.Kb7 Ke4 4.Kc6 Kxd4 5.Kd6 Rc5 6.Ke7 Rc4 7.Kxf7 Rxa4 8.Kxe6 Ra1 9.Kd6 Ke4
 16/21	00:00	 225k	1 605k	+107,71	1. ... Rh5+ 2.Kd6 Rd5+ 3.Ke7 Rxd4 4.Kxf7 Rxa4 5.Kxe6 Ra1 6.Kd5 Kf3 7.Kc6 Ke4 8.Kd6 Rc1 9.Ke7 Kf5
 17/21	00:00	 308k	1 718k	+107,77	1. ... Rh5+ 2.Kd6 Rd5+ 3.Ke7 Rxd4 4.Kxf7 Rxa4 5.Kxe6 Ra1 6.Kd5 Kf3 7.Kc6 Ke4 8.Kd6 Rc1 9.Ke7 Kd5 10.Kf6 Rf1+ 11.Ke7 Kc6
 18/26	00:00	 934k	1 893k	+108,76	1. ... Kf3 2.d5 exd5 3.Kxd5 Rxa4 4.Ke5 Rf4 5.Kd5 Rf5+ 6.Kc6 Ke4 7.Kd7 Ke5 8.Ke7 Rf4 9.Kd7 Rd4+ 10.Ke7 f6 11.Ke8 Ke6
 19/27	00:00	 1 435k	2 132k	+109,71	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Ke4 6.Kb6 Kxd4 7.Kc6 Kc3 8.Kc7 Kb3 9.Kb6 Kxa4 10.Kc6 Kb4 11.Kc7
 20/22	00:00	 1 661k	2 217k	+109,71	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Ke4 6.Kb6 Kxd4 7.Kb7 Ke4 8.Kb8 Rd4 9.Kc7 Kf3 10.Kb6 Rxa4 11.Kb7 Ra1 12.Kb8
 21/30	00:00	 2 207k	2 468k	+114,33	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kc7 Rxd4 5.Kb6 Rxa4 6.Kb5 Rf4 7.Kxa5 Kf2 8.Kb6 e5 9.Kc7 e4 10.Kd6 e3 11.Ke5 e2 12.Kxf4 e1Q 13.Kf5 Kf3
 22/36	00:01	 2 929k	2 655k	+120,43	1. ... Kf3 2.Kd6 Rxd4+ 3.Ke7 Rxa4 4.Kxf7 Re4 5.Ke8 a4 6.Ke7 a3 7.Kf6 a2 8.Ke7 a1Q 9.Kd7 Qa7+ 10.Kd6 Kf4 11.Kc6 Re5 12.Kd6 Ke4 13.Kc6
 23/34	00:01	 5 787k	3 406k	+121,24	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Kb3 8.Kb6 Kxa4 9.Ka7 Kb3 10.Kb6 a4 11.Kb7 Kb4 12.Kc7 a3 13.Kc8 Kb3 14.Kb8 a2 15.Kc8
 24/30	00:01	 6 285k	3 455k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Rc5 8.Kb7 Kb4 9.Kb6 Rd5 10.Kc6 Kb3 11.Kb6 Kb2 12.Ka6 Ka3 13.Ka7 Kb4 14.Kb6 Kb3 15.Kc7 Ka3 16.Kc8
 25/30	00:01	 6 978k	3 517k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Rc5 8.Kb7 Kb4 9.Kb6 Rd5 10.Kc6 Kb3 11.Kb6 Kb2 12.Ka6 Ka3 13.Ka7 Kb4 14.Kb6 Kb3 15.Kc7 Ka3 16.Kc8
 26/30	00:02	 8 085k	3 601k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Rc5 8.Kb7 Kb4 9.Kb6 Rd5 10.Kc6 Kb3 11.Kb6 Kb2 12.Ka6 Ka3 13.Ka7 Kb4 14.Kb6 Kb3 15.Kc7 Kc3 16.Kb7
 27/31	00:02	 9 258k	3 650k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Rc5 8.Kb7 Kb3 9.Kb8 Rd5 10.Ka7 Rh5 11.Kb8 Kc3 12.Kc7 Rd5 13.Kb7 Kd4 14.Kc7 Ke4 15.Kb6 Kd4
 28/36	00:02	 10 615k	3 696k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Rd6 7.Ka8 Kd3 8.Ka7 Ke4 9.Ka8 Kd4 10.Kb7 Kc3 11.Kc7 Rd5 12.Kb7 Kb2 13.Kb6 Kb3 14.Ka7 Kc4 15.Kb7 Kb4 16.Kb6 Rd7 17.Kc6 Rd5
 29/42	00:04	 17 112k	3 972k	+M22	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 Kc3 7.Kb7 Kb3 8.Kc7 Kxa4 9.Kb6 Kb4 10.Kc6 a4 11.Kb6 a3 12.Kc6 Kb3 13.Kc7 a2 14.Kc8 a1Q 15.Kb7 Kb4 16.Kb6 Qa8 17.Kc7
 30/38	00:06	 25 908k	4 078k	+M13	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 e5 7.Kb6 e4 8.Ka6 e3 9.Kb6 e2 10.Ka6 e1Q 11.Ka7 Qe6 12.Kb7 Rd7+ 13.Kc8 Qe8+
 31/26	00:08	 35 345k	4 127k	+M13	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 e5 7.Kb6 e4 8.Ka6 e3 9.Kb6 e2 10.Ka6 e1Q 11.Ka7 Qe6 12.Kb7 Rd7+ 13.Kc8 Qe8+
 32/26	00:11	 47 391k	4 171k	+M13	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 e5 7.Kb6 e4 8.Ka6 e3 9.Kb6 e2 10.Ka6 e1Q 11.Ka7 Qe6 12.Kb7 Rd7+ 13.Kc8 Qe8+
 33/26	00:16	 68 127k	4 047k	+M13	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 e5 7.Kb6 e4 8.Ka6 e3 9.Kb6 e2 10.Ka6 e1Q 11.Ka7 Qe6 12.Kb7 Rd7+ 13.Kc8 Qe8+
 34/26	00:33	 138 503k	4 128k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 35/22	00:38	 160 110k	4 154k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 36/22	00:44	 185 762k	4 193k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 37/22	00:52	 222 718k	4 258k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 38/22	01:02	 271 714k	4 320k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 39/22	01:16	 335 082k	4 407k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
That is good to see Stash V30.0, but where is the immediate Rxd4!. As I posted earlier, there might be a quicker win, but by sacrificing the Rook show that some engines are not too materialistic :roll:
Do NOT worry and be happy, we all live a short life :roll:
Top
Chessqueen
Posts: 5582
Joined: Wed Sep 05, 2018 2:16 am
Location: Moving
Full name: Jorge Picado

Re: How many engines will Sacrifice the Rook to win?

Post by Chessqueen »

Chessqueen wrote: ↑Sat May 08, 2021 10:32 pm
mhouppin wrote: ↑Sat May 08, 2021 10:18 pm
Chessqueen wrote: ↑Sat May 08, 2021 9:25 pm There might be a quicker win, but by sacrificing the Rook show that some engine are not too materialistic. Please do NOT use any endgame EGTB :roll:

[d]8/5p2/4p3/p1K5/P2P3r/8/6k1/8 b - - 0 1
Latest version of Stash, 1 thread, 1 GB hash:

Code: Select all

FEN: 8/5p2/4p3/p1K5/P2P3r/8/6k1/8 b - - 0 1

Stash v30.0:
 1/1	00:00	 27	27k	+9,99	1. ... Kf3
 2/2	00:00	 94	94k	+10,23	1. ... Kf3 2.Kb6
 3/4	00:00	 449	449k	+9,77	1. ... Kg3 2.Kb6 Rh5
 4/5	00:00	 964	964k	+9,84	1. ... Rh5+ 2.Kc6 Rg5 3.Kb6
 5/5	00:00	 1k	687k	+9,91	1. ... Rh5+ 2.Kc6 Rg5 3.Kb7 Rg4
 6/6	00:00	 3k	903k	+10,50	1. ... Rh5+ 2.Kc4 Kf3 3.Kc3 Rh3 4.Kc4
 7/8	00:00	 5k	970k	+10,49	1. ... Rh5+ 2.Kc4 Kf3 3.Kd3 Rh2 4.Kc3 Re2
 8/9	00:00	 7k	983k	+11,08	1. ... Rh5+ 2.Kc4 Kf3 3.Kd3 Rd5 4.Kc3 Ke3 5.Kc4
 9/10	00:00	 12k	1 202k	+11,09	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.d5 Rxd5 5.Kc6 Kf3
 10/10	00:00	 17k	1 193k	+11,30	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.d5 Rxd5 5.Kb6 Kf3 6.Kc6
 11/13	00:00	 26k	1 309k	+11,48	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.Kd6 Rd5+ 5.Kc6 Kxd4 6.Kb7 Ke3 7.Kb6 Rh5
 12/15	00:00	 51k	1 381k	+12,12	1. ... Rh5+ 2.Kc4 Kf3 3.Kd3 Rd5 4.Kc3 Ke3 5.Kc4 Ke4 6.Kc3 Rxd4 7.Kb3
 13/18	00:00	 64k	1 413k	+19,16	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.d5 exd5 5.Kc6 d4 6.Kd7 d3 7.Ke8 d2
 14/17	00:00	 77k	1 433k	+107,51	1. ... Rh5+ 2.Kb6 Kf3 3.Kc7 Ke3 4.Kb6 Kxd4 5.Kc7 Kc5 6.Kd7 Kc4 7.Ke8 Kb3 8.Kxf7 Kxa4 9.Kxe6
 15/20	00:00	 138k	1 449k	+107,71	1. ... Rh5+ 2.Kc6 Kf3 3.Kb7 Ke4 4.Kc6 Kxd4 5.Kd6 Rc5 6.Ke7 Rc4 7.Kxf7 Rxa4 8.Kxe6 Ra1 9.Kd6 Ke4
 16/21	00:00	 225k	1 605k	+107,71	1. ... Rh5+ 2.Kd6 Rd5+ 3.Ke7 Rxd4 4.Kxf7 Rxa4 5.Kxe6 Ra1 6.Kd5 Kf3 7.Kc6 Ke4 8.Kd6 Rc1 9.Ke7 Kf5
 17/21	00:00	 308k	1 718k	+107,77	1. ... Rh5+ 2.Kd6 Rd5+ 3.Ke7 Rxd4 4.Kxf7 Rxa4 5.Kxe6 Ra1 6.Kd5 Kf3 7.Kc6 Ke4 8.Kd6 Rc1 9.Ke7 Kd5 10.Kf6 Rf1+ 11.Ke7 Kc6
 18/26	00:00	 934k	1 893k	+108,76	1. ... Kf3 2.d5 exd5 3.Kxd5 Rxa4 4.Ke5 Rf4 5.Kd5 Rf5+ 6.Kc6 Ke4 7.Kd7 Ke5 8.Ke7 Rf4 9.Kd7 Rd4+ 10.Ke7 f6 11.Ke8 Ke6
 19/27	00:00	 1 435k	2 132k	+109,71	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Ke4 6.Kb6 Kxd4 7.Kc6 Kc3 8.Kc7 Kb3 9.Kb6 Kxa4 10.Kc6 Kb4 11.Kc7
 20/22	00:00	 1 661k	2 217k	+109,71	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Ke4 6.Kb6 Kxd4 7.Kb7 Ke4 8.Kb8 Rd4 9.Kc7 Kf3 10.Kb6 Rxa4 11.Kb7 Ra1 12.Kb8
 21/30	00:00	 2 207k	2 468k	+114,33	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kc7 Rxd4 5.Kb6 Rxa4 6.Kb5 Rf4 7.Kxa5 Kf2 8.Kb6 e5 9.Kc7 e4 10.Kd6 e3 11.Ke5 e2 12.Kxf4 e1Q 13.Kf5 Kf3
 22/36	00:01	 2 929k	2 655k	+120,43	1. ... Kf3 2.Kd6 Rxd4+ 3.Ke7 Rxa4 4.Kxf7 Re4 5.Ke8 a4 6.Ke7 a3 7.Kf6 a2 8.Ke7 a1Q 9.Kd7 Qa7+ 10.Kd6 Kf4 11.Kc6 Re5 12.Kd6 Ke4 13.Kc6
 23/34	00:01	 5 787k	3 406k	+121,24	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Kb3 8.Kb6 Kxa4 9.Ka7 Kb3 10.Kb6 a4 11.Kb7 Kb4 12.Kc7 a3 13.Kc8 Kb3 14.Kb8 a2 15.Kc8
 24/30	00:01	 6 285k	3 455k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Rc5 8.Kb7 Kb4 9.Kb6 Rd5 10.Kc6 Kb3 11.Kb6 Kb2 12.Ka6 Ka3 13.Ka7 Kb4 14.Kb6 Kb3 15.Kc7 Ka3 16.Kc8
 25/30	00:01	 6 978k	3 517k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Rc5 8.Kb7 Kb4 9.Kb6 Rd5 10.Kc6 Kb3 11.Kb6 Kb2 12.Ka6 Ka3 13.Ka7 Kb4 14.Kb6 Kb3 15.Kc7 Ka3 16.Kc8
 26/30	00:02	 8 085k	3 601k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Rc5 8.Kb7 Kb4 9.Kb6 Rd5 10.Kc6 Kb3 11.Kb6 Kb2 12.Ka6 Ka3 13.Ka7 Kb4 14.Kb6 Kb3 15.Kc7 Kc3 16.Kb7
 27/31	00:02	 9 258k	3 650k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Kc3 7.Ka7 Rc5 8.Kb7 Kb3 9.Kb8 Rd5 10.Ka7 Rh5 11.Kb8 Kc3 12.Kc7 Rd5 13.Kb7 Kd4 14.Kc7 Ke4 15.Kb6 Kd4
 28/36	00:02	 10 615k	3 696k	+121,28	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kc6 Kxd4 6.Kb7 Rd6 7.Ka8 Kd3 8.Ka7 Ke4 9.Ka8 Kd4 10.Kb7 Kc3 11.Kc7 Rd5 12.Kb7 Kb2 13.Kb6 Kb3 14.Ka7 Kc4 15.Kb7 Kb4 16.Kb6 Rd7 17.Kc6 Rd5
 29/42	00:04	 17 112k	3 972k	+M22	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 Kc3 7.Kb7 Kb3 8.Kc7 Kxa4 9.Kb6 Kb4 10.Kc6 a4 11.Kb6 a3 12.Kc6 Kb3 13.Kc7 a2 14.Kc8 a1Q 15.Kb7 Kb4 16.Kb6 Qa8 17.Kc7
 30/38	00:06	 25 908k	4 078k	+M13	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 e5 7.Kb6 e4 8.Ka6 e3 9.Kb6 e2 10.Ka6 e1Q 11.Ka7 Qe6 12.Kb7 Rd7+ 13.Kc8 Qe8+
 31/26	00:08	 35 345k	4 127k	+M13	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 e5 7.Kb6 e4 8.Ka6 e3 9.Kb6 e2 10.Ka6 e1Q 11.Ka7 Qe6 12.Kb7 Rd7+ 13.Kc8 Qe8+
 32/26	00:11	 47 391k	4 171k	+M13	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 e5 7.Kb6 e4 8.Ka6 e3 9.Kb6 e2 10.Ka6 e1Q 11.Ka7 Qe6 12.Kb7 Rd7+ 13.Kc8 Qe8+
 33/26	00:16	 68 127k	4 047k	+M13	1. ... Kf3 2.Kb5 Rh5+ 3.Kc6 Rd5 4.Kb6 Ke3 5.Kb7 Kxd4 6.Kc6 e5 7.Kb6 e4 8.Ka6 e3 9.Kb6 e2 10.Ka6 e1Q 11.Ka7 Qe6 12.Kb7 Rd7+ 13.Kc8 Qe8+
 34/26	00:33	 138 503k	4 128k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 35/22	00:38	 160 110k	4 154k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 36/22	00:44	 185 762k	4 193k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 37/22	00:52	 222 718k	4 258k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 38/22	01:02	 271 714k	4 320k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
 39/22	01:16	 335 082k	4 407k	+M11	1. ... f5 2.Kb5 f4 3.Kxa5 f3 4.Kb4 Rxd4+ 5.Kb5 f2 6.Kc5 e5 7.a5 f1Q 8.Kb6 Qf6+ 9.Kb5 Qd6 10.a6 Rb4+ 11.Ka5 Qb6+
That is good to see Stash V30.0 finding the fastest win, just like Black Diamonds and other, but where is the immediate Rxd4!. As I posted earlier, there might be a quicker win, but by sacrificing the Rook show that some engines are not too materialistic :roll:


FEN: 8/5p2/4p3/p1K5/P2P3r/8/6k1/8 b - - 0 1

Black Diamond v13.1a:
Found 0 tablebases
NNUE evaluation using eval.bin enabled
1/2 00:00 278 139k +3.65 Rh5+ Kc4
2/3 00:00 1k 588k +4.02 Kf3 Kc6 Rxd4
3/3 00:00 2k 1,046k +4.02 Kf3 Kc6 Rxd4
4/4 00:00 5k 2,330k +4.14 Kf3 d5 Rxa4 d6
5/5 00:00 9k 2,975k +4.22 Kf3 d5 Rh5 Kc4 Rxd5
6/9 00:00 23k 5,626k +4.24 Kf3 d5 Rh5 Kc4 Rxd5 Kc3
7/8 00:00 33k 6,534k +4.29 Kf3 d5 Rxa4 d6 Rb4 Kc6 Rc4+ Kb5
8/14 00:00 43k 7,159k +4.30 Kf3 d5 Rxa4 d6 Ra1 Kb5 Ke3 Kc5 f6
9/18 00:00 66k 8,310k +4.36 Kf3 d5 Rxa4 d6 Ra1 Kc6 Rd1 Kd7 Rd3 Kc6 Ke3
10/20 00:00 115k 8,874k +5.46 Kf3 Kc4 Ke3 Kb5 Rh5+ d5 Rxd5+ Kb6 Kf3 Kc6 Rd4 Kb5 e5
11/20 00:00 187k 8,889k +33.50 Kf3 Kb6 Rh5 Kc6 Ke4 d5 Rxd5 Kb6 Ke3 Ka6 Kd2 Kb7 Kc3 Kc7
12/27 00:00 350k 9,203k +35.91 Rh5+ Kd6 Rd5+ Ke7 Rxd4 Kxf7 Rxa4 Kxe6 Rg4 Kf5 Rd4 Kg5 a4 Kh6 a3 Kh5 a2
13/25 00:00 456k 9,113k +36.08 Rh5+ Kd6 Rd5+ Kc7 Kf3 Kc6 Ke3 Kb7 Rxd4 Kb6 Rxa4 Kb5 Ra2 Kc6 a4 Kb5 e5 Kc4 e4
14/27 00:00 640k 9,149k +36.30 Rh5+ Kd6 Rd5+ Kc6 Kf3 Kb7 Rxd4 Kb6 Rxa4 Kb5 Ra2 Kc5 a4 Kc4 Ke4 Kb5 e5 Ka5 Ra1
15/27 00:00 895k 9,418k +36.44 Rh5+ Kd6 Rd5+ Kc7 Kf3 Kb7 Rxd4 Kb6 Rxa4 Kb5 Ra2 Kc5 a4 Kb5 e5 Kc6 e4 Kd7 e3
16/38 00:00 1,383k 9,810k +39.73 Rh5+ Kd6 Rd5+ Ke7 Rxd4 Kxf7 Rxa4 Kxe6 Rd4 Ke5 Rd2 Kf4 a4 Ke3 Rf2 Kd4 a3 Kc3 a2 Kb3 a1Q
17/30 00:00 1,522k 9,757k +39.87 Rh5+ Kd6 Rd5+ Ke7 Rxd4 Kxf7 Rxa4 Kxe6 Rd4 Ke5 Rd2 Kf5 a4 Kf4 a3 Ke3 Rf2 Kd3 a2 Kd4 a1Q+ Ke4 Rf3 Kd5 Rf4 Ke6 Rd4 Kf6 Kh3
18/43 00:00 3,023k 10,112k +43.81 Rh5+ Kd6 Rd5+ Ke7 Rxd4 Kf6 Rxa4 Ke5 Kf3 Kd6 Rf4 Kc7 a4 Kd8 Rd4+ Ke7 a3 Kxf7 Kg2 Ke7 a2 Kf6
19/39 00:00 4,153k 9,936k +48.00 Rh5+ Kd6 Rd5+ Ke7 Rxd4 Kf6 Rxa4 Ke5 Kf3 Kd6 Rf4 Kc7 a4 Kc6 a3 Kd6 a2 Ke7 e5 Kd7 a1Q Ke7 Qd4 Ke8 e4 Ke7 e3 Kf8 e2 Kg8
20/36 00:00 5,148k 9,958k +99.00 Rh5+ Kd6 Rd5+ Ke7 Rxd4 Kf6 Rxa4 Ke7 Rd4 Kf6 a4 Kg7 a3 Kg8 Rg4+ Kf8 Rf4 Ke8 Kf3 Ke7 a2 Kd7 a1Q Kd6 e5
21/36 00:00 5,603k 9,952k +99.11 Rh5+ Kd6 Rd5+ Ke7 Rxd4 Kf6 Rxa4 Ke7 Rd4 Kf6 a4 Kg7 a3 Kg8 Rg4+ Kxf7 Rd4 Ke7 a2 Kf7 Rd1 Ke8 a1Q Ke7 Rd4 Kxe6 Rd1
22/33 00:00 6,429k 10,093k +99.15 Rh5+ Kd6 Rd5+ Ke7 Rxd4 Kxf7 Rxa4 Kxe6 Rd4 Ke5 Rd2 Kf4 a4 Ke3 Rd6 Ke4 a3 Ke5 Rd2 Kf4 a2 Ke3 Rd6 Ke4
23/25 00:00 8,141k 9,844k +99.15 Rh5+ Kd6 Rd5+ Ke7 Rxd4 Kxf7 Rxa4 Kxe6 Rd4 Ke5 Rd2 Kf4 a4 Ke3 Rd6 Ke4 a3 Ke5 Rd2 Kf4 a2 Ke3 Rd6 Ke4 a1Q
24/41 00:01 15,256k 10,178k +M22 Rh5+ Kd6 Rd5+ Ke7 Rxd4 Kxf7 Rxa4 Kxe6 Rd4 Ke5 Rd7 Ke4 a4 Ke3 Rd6 Kf4 a3 Ke5 Rd2 Kf6 a2 Ke6 Rd1 Ke7 a1Q Kf7 Rd7+ Ke6
24/38 00:01 18,142k 10,227k +M17 Rh5+ Kd6 Rd5+ Kc6 Kf2 Kc7 Ke3 Kb6 Kxd4 Kc6 Kc4 Kb6 Kb4 Kc6 Kxa4 Kc7 Kb4 Kc8 a4 Kb8 a3 Kc7 a2 Kb7 a1Q Kb6 Qd4+ Ka6 Qc3 Kb6 Rd7 Ka6 Qc6+
25/38 00:02 21,688k 10,182k +M17 Rh5+ Kd6 Rd5+ Kc6 Kf2 Kc7 Ke3 Kb6 Kxd4 Kc6 Kc4 Kb6 Kb4 Kc6 Kxa4 Kc7 Kb4 Kc8 a4 Kb8 a3 Kc7 a2 Kb7 a1Q Kb6 Qd4+ Ka6 Qc3 Kb6 Rd7 Ka6 Qc6+
26/33 00:03 40,049k 10,325k +M11 f5 d5 exd5 Kb5 f4 Kxa5 f3 Kb5 f2 Kc6 f1Q Kd6 Qf6+ Kc5 Qe6 Kb5 Qd6 Ka5 Qb8 Ka6 Rxa4+
27/21 00:07 74,985k 10,466k +M11 f5 d5 exd5 Kxd5 f4 Ke5 f3 Kf6 f2 Kg5 f1Q Kxh4 Qf4+ Kh5 Qf6 Kg4 Qe5 Kh4 Kf3 Kh3 Qg3+
Do NOT worry and be happy, we all live a short life :roll:
Top
User avatar
mvanthoor
Posts: 1784
Joined: Wed Jul 03, 2019 4:42 pm
Location: Netherlands
Full name: Marcel Vanthoor

Re: How many engines will Sacrifice the Rook to win?

Post by mvanthoor »

You don't _have_ to sacrifice the rook to win. You just go Rh5+ (covering your a-pawn in the process) and then you just start pushing the f-pawn. Done. There is completely _no_ reason to sacrifice the rook. If white goes after the e6-pawn, black will capture the d4-pawn, and the f7-f5-f4-etc pawn will already be long out of reach of the black king.

PS: Stash demonstrates it already; it starts out with Rh5+, and in the end even switches to f5 immediately.

Sometimes I wonder if you ever made a... somewhat useful post with regard to actual chess.
Author of Rustic, an engine written in Rust.
Releases | Code | Docs | Progress | CCRL
Top
Chessqueen
Posts: 5582
Joined: Wed Sep 05, 2018 2:16 am
Location: Moving
Full name: Jorge Picado

Re: How many engines will Sacrifice the Rook to win?

Post by Chessqueen »

mvanthoor wrote: ↑Sun May 09, 2021 1:41 am You don't _have_ to sacrifice the rook to win. You just go Rh5+ (covering your a-pawn in the process) and then you just start pushing the f-pawn. Done. There is completely _no_ reason to sacrifice the rook. If white goes after the e6-pawn, black will capture the d4-pawn, and the f7-f5-f4-etc pawn will already be long out of reach of the black king.

PS: Stash demonstrates it already; it starts out with Rh5+, and in the end even switches to f5 immediately.

Sometimes I wonder if you ever made a... somewhat useful post with regard to actual chess.
I know that there is a faster win, but that is NOT what this post is all about. Just like Black Diamonds and other engines, what i am looking for is an engine that consider the immediate Rxd4!. As I posted earlier, there might be a quicker win, but by sacrificing the Rook show that some engines are not too materialistic. The point here is that by trading the Rook, it will force the other engine to resign immediately :roll:
Do NOT worry and be happy, we all live a short life :roll:
Top
amanjpro
Posts: 883
Joined: Sat Mar 13, 2021 1:47 am
Full name: Amanj Sherwany

Re: How many engines will Sacrifice the Rook to win?

Post by amanjpro »

Chessqueen wrote: ↑Sun May 09, 2021 5:21 am
mvanthoor wrote: ↑Sun May 09, 2021 1:41 am You don't _have_ to sacrifice the rook to win. You just go Rh5+ (covering your a-pawn in the process) and then you just start pushing the f-pawn. Done. There is completely _no_ reason to sacrifice the rook. If white goes after the e6-pawn, black will capture the d4-pawn, and the f7-f5-f4-etc pawn will already be long out of reach of the black king.

PS: Stash demonstrates it already; it starts out with Rh5+, and in the end even switches to f5 immediately.

Sometimes I wonder if you ever made a... somewhat useful post with regard to actual chess.
I know that there is a faster win, but that is NOT what this post is all about. Just like Black Diamonds and other engines, what i am looking for is an engine that consider the immediate Rxd4!. As I posted earlier, there might be a quicker win, but by sacrificing the Rook show that some engines are not too materialistic. The point here is that by trading the Rook, it will force the other engine to resign immediately :roll:
mmm... `Rxd4!` is actually `Rxd4?`, as it is not the quickest win! BTW, I believe you need to learn the ABC of chess, then programming, then come back
Top
RubiChess
Posts: 584
Joined: Fri Mar 30, 2018 7:20 am
Full name: Andreas Matthies

Re: How many engines will Sacrifice the Rook to win?

Post by RubiChess »

Chessqueen wrote: ↑Sat May 08, 2021 9:25 pm There might be a quicker win, but by sacrificing the Rook show that some engine are not too materialistic. Please do NOT use any endgame EGTB :roll:

[d]8/5p2/4p3/p1K5/P2P3r/8/6k1/8 b - - 0 1
We do NOT develop engines to play suboptimal moves only because you want to see them.
Troll again!
Top
JohnW
Posts: 381
Joined: Thu Nov 22, 2012 12:20 am
Location: New Hampshire

Re: How many engines will Sacrifice the Rook to win?

Post by JohnW »

Why would being less materialistic be more important than finding the quickest win?
Top
User avatar
mvanthoor
Posts: 1784
Joined: Wed Jul 03, 2019 4:42 pm
Location: Netherlands
Full name: Marcel Vanthoor

Re: How many engines will Sacrifice the Rook to win?

Post by mvanthoor »

Chessqueen wrote: ↑Sun May 09, 2021 5:21 am The point here is that by trading the Rook, it will force the other engine to resign immediately :roll:
You don't know what you're talking about. In the current position black is ahead 6 points of material. If he sacrifices the rook with Rxd4 Kxd4, he is ahead 2 points of material. The other engine will be _LESS_ likely to resign. The only reason why the other engine may resign is because the removal of the rook diminishes the possible moves by so many, that the other engine may actually see the promotion of one of the pawns immediately (especially if it has a transposition table), and then resign because it is behind by 8 points of material.

Therefore it will resign because it suddenly sees the promotion faster and thus an even greater material disadvantage, not because the rook sacrifice was a brilliant move.
Author of Rustic, an engine written in Rust.
Releases | Code | Docs | Progress | CCRL
Top

Return to “Computer Chess Club: General Topics”