tcec practical hard mate test

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Vinvin
Posts: 5310
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: tcec practical hard mate test

Post by Vinvin »

Uri Blass wrote: ↑Mon Oct 10, 2022 2:13 pm ...
8/3b4/kp4r1/3P4/p1P1p2R/4N3/1R5K/8 w - - 0 1 bm Rh7 dm 23
...
Mate in 20 :

Code: Select all

Blue Marlin 15.3-avx2:
...
 38/40	00:48	 1.420.768k	29.304k	+M20	1.Rh7 Rd6 2.Rg2 b5 3.c5 Rf6 4.Rxd7 Rf8 5.Rg6+ Ka5 6.Ra7+ Kb4 7.c6 Rh8+ 8.Kg3 Rf8 9.c7 Rf3+ 10.Kh2 Rf8 11.d6 Rf2+ 12.Rg2 Rf8 13.d7 Rh8+ 14.Kg1 Rg8 15.Rxg8 Kb3 16.c8Q Kb4 17.Nd5+ Kb3 18.Qc3+ Ka2 19.Rg2+ Kb1 20.Qb2+
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Vinvin
Posts: 5310
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Re: tcec practical hard mate test

Post by Vinvin »

Uri Blass wrote: ↑Mon Oct 10, 2022 2:13 pm 1r2k3/2qb1p2/p3pBr1/4P1Pp/2P5/3Q4/1P1RBPP1/1K6 w - - 0 1 bm Bxh5 dm 24.
Mate in 22

Code: Select all

Blue Marlin 15.3-avx2:
...
40/43	00:00	 14.386k	25.644k	+M22	1.Bxh5 Bc6 2.f3 Qd7 3.Bxg6 Qxd3+ 4.Bxd3 Kd7 5.Bg6+ Kc7 6.Bxf7 Be8 7.Bxe8 Rxe8 8.g6 Rg8 9.g7 a5 10.Rd6 a4 11.Ka2 a3 12.b3 Kb7 13.Rd8 Rxg7 14.Bxg7 Kb6 15.Rd6+ Kc7 16.Kxa3 Kc8 17.Ka4 Kb7 18.Kb5 Ka7 19.Rd7+ Kb8 20.Kb6 Kc8 21.Rd6 Kb8 22.Rd8+
...
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Vinvin
Posts: 5310
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: tcec practical hard mate test

Post by Vinvin »

Uri Blass wrote: ↑Mon Oct 10, 2022 2:13 pm 8/4n3/2p5/1k6/p1p1B2R/8/PB2n3/1K6 w - - 0 1 bm Rh5+ dm 33
Be5 is mate in 24, Rh5+ is mate in 28.

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Blue Marlin 15.3-avx2:
 60/56	00:04	 198.317k	41.874k	+M28	1.Rh5+ Nd5 2.Bxd5 cxd5 3.Rxd5+ Kc6 4.Ra5 c3 5.Rxa4 cxb2 6.Kxb2 Kb6 7.Kb3 Nc1+ 8.Kc4 Ne2 9.Rb4+ Ka5 10.Rb5+ Ka4 11.Re5 Ng3 12.Re8 Ka5 13.Kc5 Ka6 14.Re6+ Kb7 15.a4 Kc7 16.a5 Kb7 17.Rb6+ Ka7 18.a6 Ne4+ 19.Kb5 Nc3+ 20.Ka5 Ka8 21.Rb3 Nd5 22.Rd3 Ne7 23.Rd8+ Ka7 24.Rd7+ Ka8 25.Rxe7 Kb8 26.Rg7 Ka8 27.Kb6 Kb8 28.Rg8+
 60/48	00:04	 198.317k	41.874k	+M24	1.Be5 Nd5 2.Bxd5 cxd5 3.Rg4 Kc5 4.Rg2 Nd4 5.Bxd4+ Kxd4 6.Kc2 Ke4 7.Kc3 Kf3 8.Rg6 Ke4 9.Ra6 Ke5 10.Rxa4 Kd6 11.Kd4 Ke6 12.Ra5 c3 13.Rxd5 c2 14.Rc5 Kd6 15.a4 Kd7 16.Rxc2 Ke6 17.Rc5 Ke7 18.a5 Kd7 19.a6 Ke6 20.a7 Ke7 21.a8Q Kd6 22.Rc6+ Kd7 23.Qb7+ Kd8 24.Rc8+
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Jouni
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Full name: Jouni Uski

Re: tcec practical hard mate test

Post by Jouni »

I tried Blue Marlin. It didn't solve any of mates in reasonable time :( . So these times are forward/backward analysis?
Jouni
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Vinvin
Posts: 5310
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: tcec practical hard mate test

Post by Vinvin »

Jouni wrote: ↑Mon Oct 10, 2022 8:29 pm I tried Blue Marlin. It didn't solve any of mates in reasonable time :( . So these times are forward/backward analysis?
The 2 first positions were without forward/backward, but after that I changed to manual forward/backward.
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Vinvin
Posts: 5310
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Full name: Vincent Lejeune

Re: tcec practical hard mate test

Post by Vinvin »

Vinvin wrote: ↑Mon Oct 10, 2022 7:40 pm
Uri Blass wrote: ↑Mon Oct 10, 2022 2:13 pm 8/4n3/2p5/1k6/p1p1B2R/8/PB2n3/1K6 w - - 0 1 bm Rh5+ dm 33
Be5 is mate in 24, Rh5+ is mate in 28.

Code: Select all

Blue Marlin 15.3-avx2:
 60/56	00:04	 198.317k	41.874k	+M28	1.Rh5+ Nd5 2.Bxd5 cxd5 3.Rxd5+ Kc6 4.Ra5 c3 5.Rxa4 cxb2 6.Kxb2 Kb6 7.Kb3 Nc1+ 8.Kc4 Ne2 9.Rb4+ Ka5 10.Rb5+ Ka4 11.Re5 Ng3 12.Re8 Ka5 13.Kc5 Ka6 14.Re6+ Kb7 15.a4 Kc7 16.a5 Kb7 17.Rb6+ Ka7 18.a6 Ne4+ 19.Kb5 Nc3+ 20.Ka5 Ka8 21.Rb3 Nd5 22.Rd3 Ne7 23.Rd8+ Ka7 24.Rd7+ Ka8 25.Rxe7 Kb8 26.Rg7 Ka8 27.Kb6 Kb8 28.Rg8+
 60/48	00:04	 198.317k	41.874k	+M24	1.Be5 Nd5 2.Bxd5 cxd5 3.Rg4 Kc5 4.Rg2 Nd4 5.Bxd4+ Kxd4 6.Kc2 Ke4 7.Kc3 Kf3 8.Rg6 Ke4 9.Ra6 Ke5 10.Rxa4 Kd6 11.Kd4 Ke6 12.Ra5 c3 13.Rxd5 c2 14.Rc5 Kd6 15.a4 Kd7 16.Rxc2 Ke6 17.Rc5 Ke7 18.a5 Kd7 19.a6 Ke6 20.a7 Ke7 21.a8Q Kd6 22.Rc6+ Kd7 23.Qb7+ Kd8 24.Rc8+
Update :

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Blue Marlin 15.3-avx2:
 73/52	02:52	 8.172.312k	47.389k	+M26	1.Rg4 c5 2.Bf3 Nd4 3.Bxd4 cxd4 4.Rxd4 a3 5.Kc2 Nc8 6.Be2 Kb6 7.Rxc4 Nd6 8.Kb3 Nxc4 9.Bxc4 Kc5 10.Be2 Kd5 11.Kxa3 Kc5 12.Kb3 Kd6 13.Kb4 Kd5 14.a4 Kc6 15.a5 Kd6 16.a6 Kc6 17.Bb5+ Kb6 18.Kc4 Kc7 19.Kc5 Kd8 20.a7 Ke7 21.Bd3 Kf6 22.a8Q Ke7 23.Qf3 Kd7 24.Qf7+ Kd8 25.Kd6 Kc8 26.Qc7+
 73/52	02:52	 8.172.312k	47.389k	+M26	1.Bf3 Ng3 2.Rh3 c3 3.Rxg3 cxb2 4.Kxb2 Nc8 5.Rg6 Na7 6.Rg7 Nc8 7.Rc7 Nd6 8.Kc3 c5 9.Rc6 Nb7 10.Rg6 Na5 11.Be2+ c4 12.Bxc4+ Kc5 13.Bd5 Kxd5 14.Rg5+ Kd6 15.Rxa5 Ke7 16.Rxa4 Ke6 17.Rd4 Ke7 18.a4 Kf7 19.a5 Kf6 20.a6 Ke5 21.a7 Kf5 22.a8Q Kf6 23.Qf8+ Kg5 24.Qf3 Kh6 25.Rg4 Kh5 26.Qh3+
 74/50	02:52	 8.172.312k	47.389k	+M25	1.Rh5+ Nd5 2.Be5 Ka6 3.Bxd5 cxd5 4.Kc2 d4 5.Kd2 Nc3 6.Bxd4 Nxa2 7.Bc5 c3+ 8.Kc2 Kb5 9.Ba3+ Kc4 10.Rh4+ Kb5 11.Kd3 Ka5 12.Rh5+ Kb6 13.Rh2 Kc6 14.Rxa2 Kd5 15.Re2 c2 16.Rxc2 Ke5 17.Rc5+ Kf4 18.Ra5 Kf3 19.Rxa4 Kf2 20.Be7 Kf1 21.Ke3 Kg2 22.Rg4+ Kh3 23.Kf3 Kh2 24.Kf2 Kh3 25.Rh4+
 74/48	02:52	 8.172.312k	47.389k	+M24	1.Be5 Nd5 2.Bxd5 cxd5 3.Rg4 Kc5 4.Rg2 Nd4 5.Bxd4+ Kxd4 6.Kc2 Kc5 7.Rg8 Kc6 8.Ra8 Kc5 9.Rxa4 Kc6 10.Rb4 Kc5 11.Rb8 Kc6 12.a4 Kc5 13.a5 d4 14.Rb1 d3+ 15.Kc3 d2 16.a6 d1Q 17.Rxd1 Kb6 18.Kxc4 Kxa6 19.Kc5 Kb7 20.Rd7+ Kc8 21.Kc6 Kb8 22.Rd8+ Ka7 23.Re8 Ka6 24.Ra8+
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Uri Blass
Posts: 11126
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: tcec practical hard mate test

Post by Uri Blass »

I improved the score in the first position to mate in 26.

7R/2k1p2P/r2rP3/8/3p1R2/8/2P2p2/2K5 w - - 0 1 bm Rc8 dm 26
main line.
1.Rc8+ kxc8 2.h8=Q Rd8 3.Qe5 f1Q+ 4.Rxf1 Ra1+ 5.Kd2 Rxf1 6.Qc5+ Kb8 7.Qb4+ Kc8 8.Qc4+ Kb7 9.Qxf1 Kc7 10.Kd3 Kc6 11.Qf7 Kd6 12.Qf5 Kc6 13.Kc4 mate in 14 (The mate in 14 is the shortest possible mate based on chest)

latest version of positions so far and mate scores so far:
7R/2k1p2P/r2rP3/8/3p1R2/8/2P2p2/2K5 w - - 0 1 bm Rc8 dm 26
r7/4pk2/PP1r4/2R2P2/8/1KP5/8/R7 w - - 0 1 bm Rb5 dm 14
4r1k1/r7/2P1n1P1/1P1B1R2/P2b4/K7/3B4/7R w - - 0 1 bm b6 dm 13
8/6R1/3P4/4Q1p1/2p1P3/3rkP1P/6PK/4q3 w - - 0 1 bm Ra7 dm 29
r6k/5p1P/1n3Np1/3P2P1/2n1PK2/1R6/p7/2R5 w - - 0 1 bm Ra1 dm 19
8/4n3/2p5/1k6/p1p1B2R/8/PB2n3/1K6 w - - 0 1 bm Be5 dm 24
1r2k3/2qb1p2/p3pBr1/4P1Pp/2P5/3Q4/1P1RBPP1/1K6 w - - 0 1 bm Bxh5 dm 22
8/3b4/kp4r1/3P4/p1P1p2R/4N3/1R5K/8 w - - 0 1 bm Rh7 dm 20
4r3/2P1rk2/4p1p1/2K1Qp1p/3P3P/2P2P2/6P1/8 w - - 0 1 bm d5 dm 23
8/8/2n5/7P/3K4/k1pB4/3b4/1R6 w - - 0 1 bm Kd5 dm 27
2r5/p4k2/6p1/1KP3Pp/1PR4P/4R3/8/6r1 w - - 0 1 bm c6 dm 25
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peter
Posts: 3491
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: tcec practical hard mate test

Post by peter »

Vinvin wrote: ↑Mon Oct 10, 2022 2:44 pm
Uri Blass wrote: ↑Mon Oct 10, 2022 2:13 pm ...
7R/2k1p2P/r2rP3/8/3p1R2/8/2P2p2/2K5 w - - 0 1 bm Re8 dm 32
...
First position, Blue Marlin 15.3 reports a mate in 27 and McCain-v2 a mate in 29 with Rc8+ :

Code: Select all

Blue Marlin 15.3-avx2:
 60/60	01:12	 3.287.543k	45.637k	+M30	1.Rhf8 f1Q+ 2.Rxf1 Ra1+ 3.Kd2 Rxf1 4.h8Q Rxf8 5.Qxf8 Rxe6 6.Kd3 Kc6 7.Kxd4 Rd6+ 8.Kc4 Kd7 9.Qf5+ Kc7 10.Qe5 Kd7 11.Kb5 Rd1 12.Qf5+ e6 13.Qh7+ Kd6 14.c4 Rd2 15.c5+ Ke5 16.Qh8+ Kf5 17.c6 Kg6 18.Qe5 Rd5+ 19.Qxd5 exd5 20.c7 Kf7 21.c8Q Kf6 22.Kc5 Ke5 23.Qe8+ Kf5 24.Kxd5 Kf4 25.Qe4+ Kg3 26.Ke5 Kh2 27.Qg4 Kh1 28.Ke4 Kh2 29.Kf3 Kh1 30.Qg2+
 60/60	01:12	 3.287.543k	45.637k	+M30	1.Rg8 Ra1+ 2.Kd2 Rh1 3.h8Q Rxh8 4.Rxh8 Rxe6 5.Rxf2 Rg6 6.Re2 e6 7.Kd3 Kd6 8.Kxd4 Ke7 9.Rh7+ Kd6 10.Re4 Rg1 11.Rh6 Rd1+ 12.Kc3 Ke7 13.Rexe6+ Kf7 14.Ra6 Re1 15.Rhf6+ Kg8 16.Rfe6 Rf1 17.Re8+ Kf7 18.Rc8 Rf3+ 19.Kd4 Rf6 20.Rcc6 Rxc6 21.Rxc6 Ke7 22.Ke5 Kf7 23.Rh6 Kg7 24.Re6 Kf7 25.Kf5 Kg7 26.Re7+ Kf8 27.Kf6 Kg8 28.Re8+ Kh7 29.Ra8 Kh6 30.Rh8+
 60/60	01:12	 3.287.543k	45.637k	+M30	1.Rb8 Ra1+ 2.Kd2 Rh1 3.h8R Rxh8 4.Rxh8 Rxe6 5.Rxf2 Rg6 6.Re2 e6 7.Kd3 Kd6 8.Kxd4 Ke7 9.Rh7+ Kd6 10.Re4 Rg1 11.Rh6 Rd1+ 12.Kc3 Ke7 13.Rexe6+ Kf7 14.Ra6 Re1 15.Rhf6+ Kg8 16.Rfe6 Rf1 17.Re8+ Kf7 18.Rc8 Rf3+ 19.Kd4 Rf6 20.Rcc6 Rxc6 21.Rxc6 Ke7 22.Ke5 Kf7 23.Rh6 Kg7 24.Re6 Kf7 25.Kf5 Kg7 26.Re7+ Kf8 27.Kf6 Kg8 28.Re8+ Kh7 29.Ra8 Kh6 30.Rh8+
 60/60	01:12	 3.287.543k	45.637k	+M30	1.Re8 Ra1+ 2.Kd2 Rh1 3.h8Q Rxh8 4.Rxh8 Rxe6 5.Rxf2 Rg6 6.Re2 e6 7.Kd3 Kd6 8.Kxd4 Ke7 9.Rh7+ Kd6 10.Re4 Rg1 11.Rh6 Rd1+ 12.Kc3 Ke7 13.Rexe6+ Kf7 14.Ra6 Re1 15.Rhf6+ Kg8 16.Rfe6 Rf1 17.Re8+ Kf7 18.Rc8 Rf3+ 19.Kd4 Rf6 20.Rcc6 Rxc6 21.Rxc6 Ke7 22.Ke5 Kf7 23.Rh6 Kg7 24.Re6 Kf7 25.Kf5 Kg7 26.Re7+ Kf8 27.Kf6 Kg8 28.Re8+ Kh7 29.Ra8 Kh6 30.Rh8+
 60/54	01:12	 3.287.543k	45.637k	+M27	1.Rc8+ Kxc8 2.h8Q+ Rd8 3.Qe5 f1Q+ 4.Rxf1 Ra1+ 5.Kd2 Rxf1 6.Qc5+ Kb8 7.Qb4+ Kc8 8.Qc4+ Kb7 9.Qxf1 Rd6 10.Qf7 Kc6 11.Kd3 Kd5 12.Qf5+ Kc6 13.Ke4 d3 14.cxd3 Kc7 15.Qf7 Kd8 16.Qf8+ Kc7 17.Qxe7+ Kc6 18.Qf7 Rd8 19.e7 Rc8 20.e8Q+ Rxe8+ 21.Qxe8+ Kc5 22.Qg6 Kb4 23.Kd4 Kb3 24.Qg2 Kb4 25.Qb2+ Ka4 26.Kc5 Ka5 27.Qa3+

Code: Select all

McCain-v2_x64_modern-LMonge:
 44/49	01:10	 2.830.950k	40.133k	+169,45	1.Rhf8 f1Q+ 2.Rxf1 Ra1+ 3.Kd2 Rxf1 4.h8Q Rxf8 5.Qxf8 Rxe6 6.Kd3 Re3+ 7.Kxd4 Re1 8.c4 Rd1+ 9.Kc3 Rc1+ 10.Kb2 Re1 11.c5 Re2+ 12.Kc3 Re3+ 13.Kd4 Re6 14.c6 Re1
 45/62	01:10	 2.830.950k	40.133k	+M31	1.Re8 Ra1+ 2.Kd2 Rh1 3.h8Q Rxh8 4.Rxh8 Rxe6 5.Rxf2 Rg6 6.Rh5 Kd7 7.Re2 e6 8.Rhe5 Ke7 9.Kd3 Kf7 10.Kxd4 Rg4+ 11.Kc5 Ra4 12.Rxe6 Kg7 13.c4 Ra1 14.Rb6 Ra7 15.Ree6 Kf7 16.Rf6+ Kg7 17.Rg6+ Kf8 18.Rbf6+ Ke8 19.Rg8+ Ke7 20.Rg7+ Kxf6 21.Rxa7 Ke5 22.Re7+ Kf5 23.Kd5 Kf6 24.Re4 Kf5 25.c5 Kf6 26.c6 Kg5 27.c7 Kf6 28.c8Q Kg5 29.Rg4+ Kh5 30.Qf5+ Kh6 31.Qg6+
 45/62	01:10	 2.830.950k	40.133k	+M31	1.Rg8 Ra1+ 2.Kd2 Rh1 3.h8Q Rxh8 4.Rxh8 Rxe6 5.Rxf2 Rg6 6.Rh5 Kd7 7.Re2 e6 8.Rhe5 Ke7 9.Kd3 Kf7 10.Kxd4 Rg4+ 11.Kc5 Ra4 12.Rxe6 Kg7 13.c4 Ra1 14.Rb6 Ra7 15.Ree6 Kf7 16.Rf6+ Kg7 17.Rg6+ Kf8 18.Rbf6+ Ke8 19.Rg8+ Ke7 20.Rg7+ Kxf6 21.Rxa7 Ke5 22.Re7+ Kf5 23.Kd5 Kf6 24.Re4 Kf5 25.c5 Kf6 26.c6 Kg5 27.c7 Kf6 28.c8Q Kg5 29.Rg4+ Kh5 30.Qf5+ Kh6 31.Qg6+
 45/64	01:10	 2.830.950k	40.133k	+M31	1.Rb8 Ra1+ 2.Kd2 Rh1 3.h8R Rxh8 4.Rxh8 Rxe6 5.Rxf2 Rg6 6.Rh5 Kd7 7.Re2 e6 8.Rhe5 Ke7 9.Kd3 Kf7 10.Kxd4 Rg4+ 11.Kc5 Ra4 12.Rxe6 Kg7 13.c4 Ra1 14.Rb6 Ra7 15.Ree6 Kf7 16.Rf6+ Kg7 17.Rg6+ Kf8 18.Rbf6+ Ke8 19.Rg8+ Ke7 20.Rg7+ Kxf6 21.Rxa7 Ke5 22.Re7+ Kf5 23.Kd5 Kf6 24.Re4 Kf5 25.c5 Kg5 26.c6 Kf6 27.c7 Kf7 28.Rg4 Ke7 29.c8Q Kf7 30.Qe6+ Kf8 31.Rg8+
 45/58	01:10	 2.830.950k	40.133k	+M29	1.Rc8+ Kxc8 2.h8Q+ Rd8 3.Qe5 Ra1+ 4.Kd2 f1R 5.Rxf1 Rxf1 6.Qc5+ Kb8 7.Qb4+ Kc8 8.Qc4+ Kb8 9.Qxf1 Kc7 10.Qb5 Rd6 11.Qc5+ Kd8 12.Qa5+ Kc8 13.Kd3 Rc6 14.Qa8+ Kc7 15.Qa7+ Kd6 16.Qd7+ Kc5 17.Qxe7+ Kd5 18.Qb7 Kc5 19.e7 Re6 20.Qc8+ Kd6 21.Qxe6+ Kxe6 22.e8Q+ Kf6 23.Kxd4 Kg5 24.Qe5+ Kg6 25.Ke4 Kf7 26.Kf5 Kg8 27.Kf6 Kh8 28.Kf7+ Kh7 29.Qg7+
#26 after some Forward- Backward with Huntsman at first one position:

7R/2k1p2P/r2rP3/8/3p1R2/8/2P2p2/2K5 w - - 0 1

Analysis by The Huntsman 1 bmi2:

1.Rc8+ Kxc8 2.h8Q+ Rd8 3.Qe5 Ra1+ 4.Kd2 f1N+ 5.Rxf1 Rxf1 6.Qc5+ Kb8 7.Qb4+ Kc8 8.Qc4+ Kb7 9.Qxf1 Kc7 10.Kd3 Kc6 11.Qf7 Kd5 12.Qf5+ Kc6 13.Kc4 Rc8 14.Qb5+ Kd6+ 15.Kxd4 Kxe6 16.Qd5+ Kf6 17.Qe5+ Kg6 18.Qe6+ Kg5 19.Qxc8 Kf6 20.Qe8 e6 21.Ke4 e5 22.Qxe5+ Kf7 23.Kf5 Kg8 24.Kf6 Kh7 25.Qc7+ Kh6 26.Qh2#
+- (#26) Depth: 65/52 00:01:26 5262MN
Peter.
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peter
Posts: 3491
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: tcec practical hard mate test

Post by peter »

Vinvin wrote: ↑Mon Oct 10, 2022 2:44 pm
Nr.3 with Shredder13: (BTW SMK tells me in a mail, S14 will probably arrive at year's end, hope he means 2022 :))

4r1k1/r7/2P1n1P1/1P1B1R2/P2b4/K7/3B4/7R w - - 0 1

Analysis by Deep Shredder 13 x64:

Code: Select all

...
1.Th4 Taa8 2.Txd4 Kg7 3.Lxe6 Txe6 4.Tg5 Te7 5.b6 Tae8 6.c7 Tc8 7.b7 Texc7 8.Td7+ Kf6 9.Txc7 Td8 10.Tf7+ Ke6 11.Lf4 Td3+ 12.Kb2 Tb3+ 13.Kc2 Tb2+ 14.Kd3 Tb3+ 15.Ke2 Tb2+ 16.Kf3 Tb3+ 17.Kg2 Tb2+ 18.Kh3 Tb1 19.Te5+ Kd6 
  Weiß setzt Matt: +- (#27)  Tiefe: 26/66   00:00:15  905MN
...
1.Th4 Lc5+ 2.Kb3 Lf8 3.b6 Tae7 4.Txf8+ Kxf8 5.Lc3 Sc5+ 6.Kc4 Te4+ 7.Lxe4 Sxe4 8.Th8+ Ke7 9.Txe8+ Kxe8 10.b7 Sd6+ 11.Kd5 Ke7 12.b8D Se8 13.Da7+ Sc7+ 14.Dxc7+ Ke8 15.Dd7+ Kf8 16.Df7# 
  Weiß setzt Matt: +- (#16)  Tiefe: 47/66   00:02:59  12058MN
1.b6 
  Weiß setzt Matt: +- (#15 ++)  Tiefe: 47/66   00:03:53  15657MN
...
1.b6 Tae7 2.b7 Lc5+ 3.Ka2 Kg7 4.Lxe6 Txe6 5.c7 Te2 6.c8D Txd2+ 7.Kb1 Kxg6 8.Dxe8+ Kxf5 9.b8D Ld6 10.Tf1+ Tf2 11.Txf2+ Kg5 12.Dxd6 Kh4 13.Dh8+ Kg4 14.Dg6# 
 +- (#14)   Tiefe: 48/66   00:05:58  23133MN
1.b6 Tae7 2.c7 Lc5+ 3.Ka2 Kg7 4.Tf3 Sf4 5.Txf4 Kxg6 6.b7 Te2 7.b8D Txb8 8.cxb8D Txd2+ 9.Kb1 Td1+ 10.Txd1 Ld4 11.Tdxd4 Kg7 12.Dg8+ Kh6 13.Th4# 
 +- (#13)   Tiefe: 49/66   00:07:12  27660MN
Peter.
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peter
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Full name: Peter Martan

Re: tcec practical hard mate test

Post by peter »

peter wrote: ↑Tue Oct 11, 2022 1:43 pm Nr.3 with Shredder13
Nr.4 with SlowChess:

SlowChess Blitz 2.9 avx2 (32768 MB hash, 32 threads)
FEN: 8/6R1/3P4/4Q1p1/2p1P3/3rkP1P/6PK/4q3 w - - 0 1

Code: Select all

[41]  M28  02:27.8  3879.38M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qf5+  Ke7  Ra7+  Qd7  Qxd7+  Rxd7  Rxd7+  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kf6  Kf4  Kg6  e5  Kg7  Kf5  Kf7  h5  Ke7  h6  Kf7  e6+  Ke7  h7  Kd8  h8=Q+  Kc7  e7  Kb7  Qb2+  Kc6  e8=Q+  Kd5  Qbe5+  Kc4  Q8b5#  
...
[36]  M28  00:41.9  1150.40M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qf5+  Ke7  Ra7+  Qd7  Qxd7+  Rxd7  Rxd7+  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kf6  Kf4  Kg6  e5  Kg7  Kf5  Kf7  h5  Ke7  h6  Kf7  e6+  Ke7  h7  Kd8  h8=Q+  Kc7  e7  Kb7  Qb2+  Kc6  e8=Q+  Kd5  Qbe5+  Kc4  Q8b5#  
[35]  M29  00:37.6  1044.79M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qf5+  Ke7  Ra7+  Qd7  Qxd7+  Rxd7  Rxd7+  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kf6  Kg4  Ke6  Kf4  Kf7  Kf5  Kg7  e5  Kf7  h5  Ke7  h6  Kf7  e6+  Ke7  h7  Kd8  h8=Q+  Kc7  e7  Kb7  Qb2+  Kc6  e8=Q+  Kd5  Qbe5+  Kc4  Q8b5#  
[34]  M29  00:36.5  1018.72M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qf5+  Ke7  Ra7+  Qd7  Qxd7+  Rxd7  Rxd7+  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kf6  Kg4  Ke6  Kf4  Kf7  Kf5  Kg7  e5  Kf7  h5  Ke7  h6  Kf7  e6+  Ke7  h7  Kd8  h8=Q+  Kc7  e7  Kb7  Qb2+  Kc6  e8=Q+  Kd5  Qbe5+  Kc4  Q8b5#  
[33]  M29  00:35.5  993.42M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qf5+  Ke7  Ra7+  Qd7  Qxd7+  Rxd7  Rxd7+  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kf6  Kg4  Ke6  Kf4  Kf7  Kf5  Kg7  e5  Kf7  h5  Ke7  h6  Kf7  e6+  Ke7  h7  Kd8  h8=Q+  Kc7  e7  Kb7  Qb2+  Kc6  e8=Q+  Kd5  Qbe5+  Kc4  Q8b5#  
[32]  M29  00:33.5  944.72M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qf5+  Ke7  Ra7+  Qd7  Qxd7+  Rxd7  Rxd7+  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kf6  Kg4  Ke6  Kf4  Kf7  Kf5  Kg7  e5  Kf7  h5  Ke7  h6  Kf7  e6+  Ke7  h7  Kd8  h8=Q+  Kc7  e7  Kb7  Qb2+  Kc6  e8=Q+  Kd5  Qbe5+  Kc4  Q8b5#  
[31]  M29  00:33.2  937.03M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qf5+  Ke7  Ra7+  Qd7  Qxd7+  Rxd7  Rxd7+  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kf6  Kg4  Ke6  Kf4  Kf7  Kf5  Kg7  e5  Kf7  h5  Ke7  h6  Kf7  e6+  Ke7  h7  Kd8  h8=Q+  Kc7  e7  Kb7  Qb2+  Kc6  e8=Q+  Kd5  Qbe5+  Kc4  Q8b5#  
[30]  M29  00:31.2  889.00M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qf5+  Ke7  Ra7+  Qd7  Qxd7+  Rxd7  Rxd7+  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kf6  Kg4  Ke6  Kf4  Kf7  Kf5  Kg7  e5  Kf7  h5  Ke7  h6  Kf7  e6+  Ke7  h7  Kd8  h8=Q+  Kc7  e7  Kb7  Qb2+  Kc6  e8=Q+  Kd5  Qbe5+  Kc4  Q8b5#  
[29]  M30  00:29.4  845.69M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qg6+  Ke7  Ra7+  Qd7  Qh7+  Ke8  Rxd7  Rxd7  Qxd7+  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kd4  h5  Ke5  Kg4  Ke6  Kf4  Ke7  Kf5  Kf7  e5  Ke7  h6  Kf7  h7  Ke7  h8=Q  Kd7  e6+  Kc7  e7  Kb7  e8=Q  Kb6  Qb2+  Kc5  Qeb5+  Kd6  Q2e5#  
[28]  M30  00:29.1  837.18M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qg6+  Ke7  Ra7+  Qd7  Qh7+  Ke8  Rxd7  Rxd7  Qxd7+  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kd4  h5  Ke5  Kg4  Ke6  Kf4  Ke7  Kf5  Kf7  e5  Ke7  h6  Kf7  h7  Ke7  h8=Q  Kd7  e6+  Kc7  e7  Kb7  e8=Q  Kb6  Qb2+  Kc5  Qeb5+  <tt> 
[27]  M30  00:28.9  832.96M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qg6+  Ke7  Ra7+  Qd7  Qh7+  Ke8  Rxd7  Rxd7  Qxd7+  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kd4  h5  Ke5  Kg4  Ke6  Kf4  Ke7  Kf5  Kf7  e5  Ke7  h6  Kf7  h7  Ke7  h8=Q  Kd7  e6+  Kc7  e7  Kb7  e8=Q  Kb6  Qb2+  <tt> 
[26]  M30  00:28.9  832.81M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qg6+  Ke7  Ra7+  Qd7  Qh7+  Ke8  Rxd7  Rxd7  Qxd7+  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kd4  h5  Ke5  Kg4  Ke6  Kf4  Ke7  Kf5  Kf7  e5  Ke7  h6  Kf7  h7  Ke7  h8=Q  Kd7  e6+  Kc7  e7  Kb7  e8=Q  <tt> 
[25]  M30  00:28.9  832.66M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qg6+  Ke7  Ra7+  Qd7  Qh7+  Ke8  Rxd7  Rxd7  Qxd7+  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kd4  h5  Ke5  Kg4  Ke6  Kf4  Ke7  Kf5  Kf7  e5  Ke7  h6  Kf7  h7  Ke7  h8=Q  Kd7  e6+  Kc7  e7  Kb7  e8=Q  <tt> 
[25]  M31  00:28.9  832.60M  Qc5+ [++] 
[25]  56.43  00:28.9  830.96M  Qc5+ [++] 
[25]  17.86  00:12.1  365.22M  Qc5+  Ke2 [--] 
[24]  23.72  00:11.0  331.30M  Qc5+  Ke2  Ra7  Qc1  Ra2+  Rd2  Rxd2+  Qxd2  Qxc4+  Kf2  e5  Ke3  Qe4+  Kf2  Qg4  Ke1  d7  Kf1  h4  gxh4  e6  Qd6+  f4  h3  Kxh3  Kf2  Qg8  Qd3+  Kh4  Qd4  d8=Q  Qxf4+  Kh5  Kg1  e7  Qf5+  Kh6  Qf6+  Qg6  Qf4+  Qg5  Qa4  e8=Q  Qa6+  Kg7  
[23]  23.70  00:09.9  301.36M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Qxd6  Ra2+  Ke3  Qc1+  Kd4  Ra4+  Ke5  Qxg5+  Ke6  Qg6+  Ke7  Ra7+  Qd7  Qh7+  Ke8  Qxd7+  Rxd7  Rxd7  Kxd7  Kh2  Ke6  Kg3  Ke5  h4  Kf6  Kf4  Ke6  e5  Kf7  Kf5  Kg7  h5  Kf7  h6  Kf8  e6  Kg8  g4  Kf8  Kf6  Ke8  h7  Kd8  h8=Q+  <tt> 
[22]  18.24  00:05.4  157.53M  Qc5+  Ke2  Ra7  Qd2  Qxc4  Qf4+  Kh1  Kf2  Ra1  g4  Rf1+  Ke2  Rd1  Qxd6  Qxd3+  Qxd3  Rxd3  Kxd3  hxg4  Kd4  Kh2  Ke5  Kg3  Ke6  Kf4  Kf6  e5+  Kg6  Ke3  Kf7  Ke4  Ke6  Kf4  Kd7  Kf5  Kc6  e6  Kc5  e7  Kd4  Kf4  Kc5  e8=Q  Kd4  Qe4+  Kc3  g5  <tt> 
...
[7]  4.88  00:00.0  14K  Qc5+ [++]
Even 3 moves shorter after Backward with SF11:


[fen]8/6R1/3P4/4Q1p1/2p1P3/3rkP1P/6PK/4q3 w - - 0 1[/fen]


Analysis by Stockfish 11 64 POPCNT:

1.Dc5+ Ke2 2.Ta7 Dc3 3.Ta2+ Td2 4.d7 Txa2 5.d8D Dc1 6.Df6 Tb2 7.Da3 Tc2 8.Dxc1 Txc1 9.Dd4 c3 10.e5 c2 11.Dc3 Td1 12.Dxc2+ Td2 13.Dxd2+ Kxd2 14.e6 Ke2 15.e7 Kd3 16.g4 Kd4 17.e8D Kc3 18.h4 gxh4 19.g5 h3 20.g6 Kc2 21.g7 Kb3 22.g8D+ Kc3 23.De5+ Kd3 24.Db3+ Kd2 25.Dee3#
+- (#25) Tiefe: 71/50 00:00:44 3196MN
Peter.
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