Fun mate in 10

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xr_a_y
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Fun mate in 10

Post by xr_a_y » Sat Apr 13, 2019 8:05 am

From an interesting lichess game Minic/Topple

[d] 3r3k/1b2q2p/p3rb1P/1p3Rp1/4p1Q1/PBP1P1P1/6K1/5R2 w - - 0 48

https://lichess.org/TSg2u1Xo/white#94

Is there already a forced mate here ?

[d] 3r3k/1b2q2p/pr3b1P/1p3Rp1/3Np1Q1/PBP1P1P1/6K1/5R2 w - - 23 47

F. Bluemers
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Re: Fun mate in 10

Post by F. Bluemers » Sat Apr 13, 2019 9:17 am

24 +1000.11 Ne6 Bd5 Bxd5 Rxd5 Rxf6 Rb8 Rf7 Qxf7 Rxf7 Rd2+ Kf1 Kg8 Qf5 Rd1+ Ke2 Rd2+ Kxd2 Rd8+ Nxd8 b4 Qxh7# (3.18)

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Eelco de Groot
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Re: Fun mate in 10

Post by Eelco de Groot » Sat Apr 13, 2019 9:26 am

There's a Mate in 7 also I think :)
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan

Vinvin
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Re: Fun mate in 10

Post by Vinvin » Mon Apr 15, 2019 10:05 pm

xr_a_y wrote:
Sat Apr 13, 2019 8:05 am
...
Is there already a forced mate here ?

[d] 3r3k/1b2q2p/pr3b1P/1p3Rp1/3Np1Q1/PBP1P1P1/6K1/5R2 w - - 23 47
It seems so :

FEN: 3r3k/1b2q2p/pr3b1P/1p3Rp1/3Np1Q1/PBP1P1P1/6K1/5R2 w - - 23 47

Code: Select all

Stockfish_190305_x64_modern:
Found 511 tablebases
...
 23/28+	00:05	 63 556 671	11 600 049	+39,97	47.Be6
 23/28-	00:05	 63 665 178	11 602 911	+23,66	47.Be6 Bg7
 23/28+	00:05	 64 483 130	11 606 034	+37,62	47.Be6
 23/28+	00:05	 68 440 203	11 669 258	+64,35	47.Be6
 23/28	00:05	 68 547 178	11 667 604	+32,97	47.Be6 Bd5 48.Rxf6 Bc4 49.R1f2 Qc5 50.Rf7 Bd3 51.Rg7 Qe5 52.Rxg5 Rxe6 53.Nxe6 Bf1+ 54.Kxf1 Qf6 55.Rxf6 Rc8 56.Qxe4 b4 57.axb4 a5 58.Rxa5
 24/26+	00:05	 69 281 236	11 667 436	+33,06	47.Be6
 24/26+	00:06	 70 108 375	11 678 889	+33,15	47.Be6
 24/26+	00:06	 70 663 459	11 685 705	+45,66	47.Be6
 24/26-	00:06	 70 666 213	11 686 160	+27,08	47.Be6 Bd5
 24/26+	00:06	 71 533 913	11 677 099	+40,28	47.Be6
 24/26+	00:06	 74 083 822	11 699 908	+105,24	47.Be6
 24/26-	00:06	 74 316 674	11 697 886	+21,80	47.Be6 Bd5
 24/26+	00:06	 75 880 509	11 717 187	+74,70	47.Be6
 24/26+	00:06	 77 854 085	11 732 080	+143,86	47.Be6
 24/28	00:06	 79 628 491	11 720 413	+M14	47.Be6 Bd5 48.Rxf6 Bc4 49.R1f2 Qc5 50.Rf7 Bd3 51.Rg7 Bf1+ 52.Kg1 Qe5 53.Rff7 Rxe6 54.Rxh7+ Kg8 55.Rfg7+ Qxg7 56.Rxg7+ Kh8 57.Qxg5 Re7 58.Rxe7 Rg8 59.Qe5+ Rg7 60.Qxg7+
 25/28	00:07	 84 853 860	11 619 041	+M13	47.Be6 Bd5 48.Rxf6 Bc4 49.R1f2 Qc5 50.Rf7 Bd3 51.Rg7 Bf1+ 52.Kg1 Qe5 53.Rff7 Rxe6 54.Qxe6 Qxg3+ 55.Kxf1 Qf3+ 56.Nxf3 Rd1+ 57.Ke2 exf3+ 58.Kxd1 f2 59.Rf8+
 26/24	00:07	 87 906 059	11 601 697	+M12	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Rf7 Bc8 51.Qxe4 Rd2+ 52.Kg1 Qxf7 53.Rxf7 Rd1+ 54.Kg2 Rd2+ 55.Rf2 Bh3+ 56.Kxh3 g4+ 57.Qxg4 Rxf2 58.Qg7+
 27/24	00:07	 88 836 912	11 589 942	+M12	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Rf7 Bc8 51.Qxe4 Rd2+ 52.Kg1 Qxf7 53.Rxf7 Rd1+ 54.Kg2 Rd2+ 55.Rf2 Bh3+ 56.Kxh3 g4+ 57.Qxg4 Rxf2 58.Qg7+
 28/24	00:07	 91 173 579	11 568 783	+M12	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Rf7 Bc8 51.Qxe4 Rd2+ 52.Kg1 Qxf7 53.Rxf7 Rd1+ 54.Kg2 Rd2+ 55.Rf2 Bh3+ 56.Kxh3 g4+ 57.Qxg4 Rxf2 58.Qg7+
 29/24	00:08	 93 475 675	11 535 934	+M12	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Rf7 Bc8 51.Qxe4 Rd2+ 52.Kg1 Qxf7 53.Rxf7 Rd1+ 54.Kg2 Rd2+ 55.Rf2 Bh3+ 56.Kxh3 g4+ 57.Qxg4 Rxf2 58.Qg7+
 30/24	00:08	 96 049 288	11 511 180	+M12	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Rf7 Bc8 51.Qxe4 Rd2+ 52.Kg1 Qxf7 53.Rxf7 Rd1+ 54.Kg2 Rd2+ 55.Rf2 Bh3+ 56.Kxh3 g4+ 57.Qxg4 Rxf2 58.Qg7+
 31/24	00:08	 98 200 237	11 489 439	+M12	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Rf7 Bc8 51.Qxe4 Rd2+ 52.Kg1 Qxf7 53.Rxf7 Rd1+ 54.Kg2 Rd2+ 55.Rf2 Bh3+ 56.Kxh3 g4+ 57.Qxg4 Rxf2 58.Qg7+
 32/24	00:08	 102 540 949	11 444 302	+M12	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Rf7 Bc8 51.Qxe4 Rd2+ 52.Kg1 Qxf7 53.Rxf7 Rd1+ 54.Kg2 Rd2+ 55.Rf2 Bh3+ 56.Kxh3 g4+ 57.Qxg4 Rxf2 58.Qg7+
 33/24	00:09	 107 273 779	11 438 875	+M12	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Rf7 Bc8 51.Qxe4 Rd2+ 52.Kg1 Qxf7 53.Rxf7 Rd1+ 54.Kg2 Rd2+ 55.Rf2 Bh3+ 56.Kxh3 g4+ 57.Qxg4 Rxf2 58.Qg7+
 34/24	00:09	 111 086 125	11 423 912	+M12	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Rf7 Bc8 51.Qxe4 Rd2+ 52.Kg1 Qxf7 53.Rxf7 Rd1+ 54.Kg2 Rd2+ 55.Rf2 Bh3+ 56.Kxh3 g4+ 57.Qxg4 Rxf2 58.Qg7+
 35/24	00:10	 115 922 245	11 392 849	+M12	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Rf7 Bc8 51.Qxe4 Rd2+ 52.Kg1 Qxf7 53.Rxf7 Rd1+ 54.Kg2 Rd2+ 55.Rf2 Bh3+ 56.Kxh3 g4+ 57.Qxg4 Rxf2 58.Qg7+
 36/24	00:10	 119 625 644	11 372 339	+M12	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Rf7 Bc8 51.Qxe4 Rd2+ 52.Kg1 Qxf7 53.Rxf7 Rd1+ 54.Kg2 Rd2+ 55.Rf2 Bh3+ 56.Kxh3 g4+ 57.Qxg4 Rxf2 58.Qg7+
 37/24	00:11	 131 589 229	11 346 833	+M12	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Rf7 Bc8 51.Qxe4 Rd2+ 52.Kg1 Qxf7 53.Rxf7 Rd1+ 54.Kg2 Rd2+ 55.Rf2 Bh3+ 56.Kxh3 g4+ 57.Qxg4 Rxf2 58.Qg7+
 38/24	00:11	 135 955 807	11 343 830	+M12	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Rf7 Bc8 51.Qxe4 Rd2+ 52.Kg1 Qxf7 53.Rxf7 Rd1+ 54.Kg2 Rd2+ 55.Rf2 Bh3+ 56.Kxh3 g4+ 57.Qxg4 Rxf2 58.Qg7+
 39/24	00:13	 148 407 789	11 338 359	+M11	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Qf5 Bc8 51.Qe5 Rd5 52.Qe8 Rd2+ 53.Kh1 Be6 54.Rf8 Rh2+ 55.Kxh2 g4 56.Rxg8+ Bxg8 57.Qe5+
 40/22	00:13	 154 584 176	11 329 828	+M11	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Qf5 Bc8 51.Qe5 Rd5 52.Qe8 Rd2+ 53.Kh1 Be6 54.Rf8 Rh2+ 55.Kxh2 g4 56.Rxg8+ Bxg8 57.Qe5+
 41/22	00:14	 168 815 834	11 335 247	+M11	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Qf5 Bc8 51.Qe5 Rd5 52.Qe8 Rd2+ 53.Kh1 Be6 54.Rf8 Rh2+ 55.Kxh2 g4 56.Rxg8+ Bxg8 57.Qe5+
 42/22	00:15	 180 866 667	11 341 025	+M11	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Qf5 Bc8 51.Qe5 Rd5 52.Qe8 Rd2+ 53.Kh1 Be6 54.Rf8 Rh2+ 55.Kxh2 g4 56.Rxg8+ Bxg8 57.Qe5+
 43/22	00:16	 187 870 363	11 333 194	+M11	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Qf5 Bc8 51.Qe5 Rd5 52.Qe8 Rd2+ 53.Kh1 Be6 54.Rf8 Rh2+ 55.Kxh2 g4 56.Rxg8+ Bxg8 57.Qe5+
 44/22	00:17	 198 458 290	11 346 957	+M11	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.Qf5 Bc8 51.Qe5 Rd5 52.Qe8 Rd2+ 53.Kh1 Be6 54.Rf8 Rh2+ 55.Kxh2 g4 56.Rxg8+ Bxg8 57.Qe5+
Ne6 and Be6 are both mate in 11 :

Code: Select all

Matefinder_190305:
...
 28/22	00:01	 15 340 649	10 457 156	+M11	47.Ne6 Rxe6 48.Bxe6 Qxe6 49.Rxf6 Qg8 50.R6f2 Bc8 51.Qxe4 Bb7 52.Qxb7 b4 53.Qe7 Qd5+ 54.Kg1 Qg2+ 55.Rxg2 Rg8 56.Qe5+ Rg7 57.Qxg7+
 28/22	00:01	 15 340 649	10 457 156	+M11	47.Be6 Rxe6 48.Nxe6 Qxe6 49.Rxf6 Qg8 50.R6f2 Bc8 51.Qxe4 Bb7 52.Qxb7 b4 53.Qe7 Qd5+ 54.Kg1 Qg2+ 55.Rxg2 Rg8 56.Qe5+ Rg7 57.Qxg7+

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xr_a_y
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Re: Fun mate in 10

Post by xr_a_y » Tue Apr 16, 2019 5:24 am

Wow found in 0.1 sec ? it took Minic one hour ...

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