[d]r3r1k1/1q4p1/p1b1ppP1/3p4/P3B3/2N1Q3/1PP4R/5R1K w - -
Rf3 is mate in 8.
There are a couple other mating moves.
And engines like Bg2 which probably wins.
But the thing that is interesting to me is that I think most humans would play the obvious looking Rf3.
Stockfish took a long time to find it on my machine.
Winning plan: Rf3 Qc7 Rh7 Qf7 Rh8+ Kxh8 gxf7 g5 Rxf6 Kg7 f8=R Rxf8 Qxg5+ Kh8 Rh6#
Interesting mate in 8
Moderators: hgm, Rebel, chrisw
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Dann Corbit
- Posts: 12537
- Joined: Wed Mar 08, 2006 8:57 pm
- Location: Redmond, WA USA
Interesting mate in 8
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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Jim Logan
- Posts: 72
- Joined: Thu Mar 09, 2006 4:14 am
- Location: Nevada, USA
Re: Interesting mate in 8
Stockfish 1/11 development version took a long time. So did Fritz 17. Houdini 6.03 pext solved it it a flash though.
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Terje
- Posts: 347
- Joined: Tue Nov 19, 2019 4:34 am
- Location: https://github.com/TerjeKir/weiss
- Full name: Terje Kirstihagen
Re: Interesting mate in 8
Weiss liked Kg2 solving it to a mate in 9 before switching to Rf3 mate in 8. Took 4 minutes or so 
An old Crystal did the same in 10 seconds..
An old Crystal did the same in 10 seconds..
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Jim Logan
- Posts: 72
- Joined: Thu Mar 09, 2006 4:14 am
- Location: Nevada, USA
Re: Interesting mate in 8
It appears old engines have an easier time with this - Deep Junior Yokohama, Deep Rybka 4.1 SSE2 x64, and Zappa Mexico II x64 solve this instantly. At least on my 6-core i5.
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JVMerlino
- Posts: 1357
- Joined: Wed Mar 08, 2006 10:15 pm
- Location: San Francisco, California
Re: Interesting mate in 8
Myrddin took 90 seconds to give a Mate in 9 with Kg2. But, no surprise, the great old mate-finder The King from CM9000 finds Re3 and announces Mate in 8 in eight seconds.
Code: Select all
Time Depth Score Positions Moves
0:00 1/3 4.17 2247 1.Qh3 Kf8 2.Qh8+ Ke7 3.Qxg7+ Kd6
4.Qxb7 Bxb7
0:00 1/4 4.57 7786 1.Qh3 Kf8 2.Qh8+ Ke7 3.Qxg7+ Kd6
4.Qxb7 Bxb7 5.Rh7 Rab8
0:00 1/5 4.77 28655 1.Qh3 Kf8 2.Qh8+ Ke7 3.Qxg7+ Kd6
4.Qxb7 Bxb7 5.Bg2 Ke5 6.Rh7
0:00 1/6 4.71 78661 1.Qh3 Kf8 2.Qh8+ Ke7 3.Qxg7+ Kd6
4.Qxb7 Bxb7 5.Bg2 Ke5 6.Rh7 Rab8
0:00 1/6 4.74 205349 1.Kg2 Qc7 2.Qh3 Kf8 3.Qh8+ Ke7
4.Qxg7+ Kd8 5.Qxc7+ Kxc7 6.Rh7+
Kd6 7.Bd3 Rab8
0:00 1/7 6.66 343940 1.Kg2 Qc7 2.Rfh1 Qxh2+ 3.Rxh2 dxe4
4.Qh3 e3+ 5.Kg1 Kf8 6.Qh8+ Ke7
7.Qxg7+ Kd6 8.Qxf6 Rab8
0:00 1/7 7.42 550133 1.Rf4 Qc7 2.Qg3 Qxf4 3.Qxf4 dxe4
4.Qc7 e3+ 5.Qxc6 Rab8
0:00 1/8 8.16 979727 1.Rf4 Qc7 2.Qg3 Qxf4 3.Qxf4 Rac8
4.Qh4 Kf8 5.Qh8+ Ke7 6.Qxg7+ Kd6
7.Bd3
0:01 1/8 Mate11 1519603 1.Kg2 Qc7 2.Rh7 d4 3.Rfh1 Bxe4+
4.Qxe4 Kf8 5.Nd5 Qf7 6.Rh8+ Qg8
7.Rxg8+ Kxg8 8.Rh8+ Kxh8 9.Qh4+
Kg8 10.Qh7+ Kf8 11.Qh8#
0:01 1/9 Mate09 2114706 1.Kg2 Qc7 2.Rh7 d4 3.Rfh1 Bxe4+
4.Qxe4 Kf8 5.Nd5 Qf7 6.Rh8+ Qg8
7.Rxg8+ Kxg8 8.Qh4 exd5 9.Qh8#
0:02 1/10 Mate09 3523860 1.Kg2 Qc7 2.Rh7 d4 3.Rfh1 Bxe4+
4.Qxe4 Kf8 5.Nd5 Qf7 6.Rh8+ Qg8
7.Rxg8+ Kxg8 8.Qh4 exd5 9.Qh8#
0:05 2/11 Mate09 8649013 1.Kg2 Qc7 2.Rh7 d4 3.Rfh1 Bxe4+
4.Qxe4 Kf8 5.Nd5 Qf7 6.Rh8+ Qg8
7.Rxg8+ Kxg8 8.Qh4 exd5 9.Qh8#
0:08 2/11 Mate08 14950823 1.Rf3 Qc7 2.Rh7 Qd6 3.Rh8+ Kxh8
4.Rxf6 Kg8 5.Qh3 Qh2+ 6.Qxh2 gxf6
7.Qh7+ Kf8 8.Qf7#
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MikeB
- Posts: 4889
- Joined: Thu Mar 09, 2006 6:34 am
- Location: Pen Argyl, Pennsylvania
Re: Interesting mate in 8
BD is not as fast as Crystal
mover viewpoint fewer / Multi-PV setting = 1 / more
exclude: none best +tail
dep score nodes time (not shown: tbhits knps seldep)
23 10 seconds
23 #8 869.6M 0:08.83 Rf3 Qc7 Rh7 Qf7 Rh8+ Kxh8 gxf7 g5 Rxf6 Kg7 f8=R Rxf8 Qxg5+ Kh8 Rh6#
22 #8 195.7M 0:01.91 Rf3 Qc7 Rh7 Qf7 Rh8+ Kxh8 gxf7 g5 Rxf6 Kg7 f8=R Rxf8 Qxg5+ Kh8 Rh6#
21 #9 110.7M 0:01.07 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
20 #9 46.6M 0:00.46 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
19 #9 43.3M 0:00.42 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
18 #9 38.6M 0:00.37 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
17 #9 38.6M 0:00.37 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
16 #9 38.6M 0:00.37 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
15 #9 38.5M 0:00.37 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
14 +5.48 6.01M 0:00.06 Bg2 d4 Qh3 Bxg2+ Rxg2 Rab8 Ne2 Kf8 Nxd4 Ke7 Qxe6+ Kd8 Qd6+ Kc8 Rf3 Qxf3 Qc5+ Kb7 Nxf3 Rbd8 a5 Re6 Kh2
13 +5.35 5.65M 0:00.06 Bg2 d4 Qh3 Bxg2+ Rxg2 Rab8 Ne2 d3 cxd3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Rf8 Qd4+ Qd5 Rxf8 Rxf8
12 +5.16 5.49M 0:00.06 Bg2 d4 Qh3 Bxg2+ Rxg2 Rab8 Qh7+ Kf8 Ne2 d3 cxd3 Ke7 Qxg7+ Kd6 Qxf6 Rh8+ Kg1 Rhf8 Qd4+ Qd5 Qxd5+ exd5 g7
11 +5.06 2.57M 0:00.03 Bg2 d4 Qh3 Bxg2+ Rxg2 Rab8 Qh7+ Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Rxb7 Ne4+ Ke5 Nxf6 Rh8+ Kg1 Rg7 Rg4 d3 cxd3
10 +3.55 891741 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2 f5 g7 Rg8 Rh7 Bc6 a5 Rab8 b3
9 +3.86 545557 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2 Bc6 Rxf6
8 +3.81 341104 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bd3 Rh8 Rxf6
7 +3.85 255871 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2
6 +4.01 213819 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7
5 +4.07 189201 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7
4 +4.12 179202 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7
3 +4.14 155644 0:00.01 Qh3 Kf8 Qh8+ Ke7
2 +4.89 40855 0:00.01 Qh3 Kf8
1 NNUE evaluation using eval.bin enabled
1 Found 510 tablebases
1 +3.23 6982 0:00.00 Bg2
0 #
BD with Night Nurse with pretty fast
mover viewpoint fewer / Multi-PV setting = 1 / more
exclude: none best +tail
dep score nodes time (not shown: tbhits knps seldep)
21 #8 145.5M 0:01.38 Rf3 Qc7 Rh7 Qf7 Rh8+ Kxh8 gxf7 g5 Rxf6 Kg7 f8=R Rxf8 Qxg5+ Kh8 Rh6#
20 #9 95.3M 0:00.89 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
19 #9 84.6M 0:00.78 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
18 #9 76.1M 0:00.69 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
17 #10 71.1M 0:00.64 Kg2 Qc7 Rh7 Qa7 Qh3 Kf8 Rxf6+ Ke7 Qxe6+ Kd8 Qxc6 Qd7 Rd6 Ra7 Nxd5 Rxe4 Rxd7+ Rxd7 Qa8#
16 +7.63 24.7M 0:00.24 Kg2 Qa7 Qf4 Qd7 Qh4 Kf8 Rxf6+ Ke7 Rf7+ Kd6 Qg3+ e5 Nxd5 Rac8 Qa3+ Ke6 Rxd7 Bxd7 Qh3+ Kd6 Qd3 Be6 Nf6+ Ke7 Nxe8 Rxe8 Qxa6 Rd8 Rh7 Rg8 Rh5 Rd8 Qa7+ Rd7 Qc5+ Rd6 Rxe5
15 +5.48 11.1M 0:00.12 Kg2 Qc7 Rfh1 Qxh2+ Kxh2 f5 Bg2 Rab8 b3 Rb4 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qf6 d4 Bxc6 Kxc6 g7 Rbb8
14 +4.02 6.81M 0:00.08 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Ra7 Rh7 Rb8 Rd1+ Ke5 Bf3 Rxh7+ gxh7 Kf6
13 +3.94 4.72M 0:00.05 Bg2 Rab8 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 b3 Qxf6 Rxf6 Ke7 Rf7+ Kd6 Rhh7 Rg8 g7
12 +4.06 3.86M 0:00.04 Bg2 Rab8 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 b3 Qxf6 Rxf6 Ke7 Rf7+ Kd6 g7 Rg8 Ne2 Rb7 Rxb7 Bxb7 Rh7 Ke7
11 +3.99 3.32M 0:00.04 Bg2 Kf8 Qc5+ Kg8 Qd4 Qxb2 Qh4 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Rab8 Rh5 Rb4 Nxd5 Qxf6 Nxf6 Rc8 Bxc6
10 +3.86 2.24M 0:00.03 Bg2 Kf8 Qc5+ Kg8 Qd4 Qxb2 Qh4 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Qb4 Rh7
9 +2.71 2.09M 0:00.02 Bg2 Rab8 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Rf8 Qd4
8 +4.00 343402 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Qb4 Qf4+ Kc5 Bg2
7 +4.30 289738 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Kc8 Rh7 Bd7
6 +4.16 256541 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Qb6 Qf4+ Kd7
5 +3.92 177407 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Kc8
4 +4.01 143205 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8
3 +4.20 123035 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Kc8
2 +4.39 103641 0:00.01 Qh3 Kf8
1 NNUE evaluation using ninu.bin enabled
1 +1.59 18880 0:00.01 Bf3 Qxb2
0 #
Bluefish with Night Nurse finds Kg2 mate-in-9
mover viewpoint fewer / Multi-PV setting = 1 / more
exclude: none best +tail
dep score nodes time (not shown: tbhits knps seldep)
45 #9 4.59G 0:35.10 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
44 #9 4.18G 0:32.06 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
43 30 seconds
43 #9 3.85G 0:29.60 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
42 #9 3.56G 0:27.46 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
41 #9 3.32G 0:25.67 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
40 #9 3.13G 0:24.20 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
39 #9 2.96G 0:22.90 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
38 #9 2.81G 0:21.70 Kg2 Qc7 Rh7 Bb7 Rfh1 Kf8 Nxd5 Qxc2+ Kg3 Qc7+ Kf3 Qg3+ Kxg3 exd5 Qc5+ Re7 Rh8#
37 #9 2.67G 0:20.60 Kg2 Qc7 Rh7 Bb7 Rfh1 Kf8 Nxd5 Qxc2+ Kg3 Qc7+ Kf3 Qg3+ Kxg3 exd5 Qc5+ Re7 Rh8#
36 20 seconds
36 #9 2.57G 0:19.75 Kg2 Qc7 Rh7 Bb7 Rfh1 Kf8 Nxd5 Qxc2+ Kg3 Qc7+ Kf3 Qg3+ Kxg3 exd5 Qc5+ Re7 Rh8#
35 #10 2.48G 0:19.05 Kg2 Qc7 Rh7 Bb7 Qh3 Kf8 Rxf6+ Ke7 Rxe6+ Kd7 Rxg7+ Re7 Rf6+ Kd8 Rf8+ Re8 Rxe8+ Kxe8 Qh8#
34 #10 2.38G 0:18.20 Kg2 Qc7 Rh7 Bb7 Qh3 Kf8 Rxf6+ Ke7 Rxe6+ Kd7 Rxg7+ Re7 Rf6+ Kd8 Rf8+ Re8 Rxe8+ Kxe8 Qh8#
33 #10 2.33G 0:17.81 Kg2 Qc7 Rh7 Bb7 Qh3 Kf8 Rxf6+ Ke7 Rxe6+ Kd7 Rxg7+ Re7 Rf6+ Kd8 Rf8+ Re8 Rxe8+ Kxe8 Qh8#
32 #13 2.19G 0:16.58 Kg2 Qc7 Rfh1 Qxh2+ Rxh2 Rad8 Qc5 Bd7 Nxd5 exd5 Bxd5+ Be6 Bxe6+ Rxe6 Qc7 Re2+ Kf3 Re3+ Kxe3 Re8+ Kf2 Re7 Qb8+ Re8 Qxe8#
31 #13 2.12G 0:15.94 Kg2 Qc7 Rfh1 Qxh2+ Rxh2 Rad8 Qc5 Bd7 Nxd5 exd5 Bxd5+ Be6 Bxe6+ Rxe6 Qc7 Re2+ Kf3 Re3+ Kxe3 Re8+ Kf2 Re7 Qb8+ Re8 Qxe8#
30 #13 2.07G 0:15.51 Kg2 Qc7 Rfh1 Qxh2+ Rxh2 Rad8 Qc5 Bd7 Nxd5 exd5 Bxd5+ Be6 Bxe6+ Rxe6 Qc7 Re2+ Kf3 Re3+ Kxe3 Re8+ Kf2 Re7 Qb8+ Re8 Qxe8#
29 #15 1.99G 0:14.77 Kg2 Qc7 Rfh1 Qxh2+ Rxh2 d4 Qh3 Kf8 Bxc6 Ke7 Ne4 Kd8 Qa3 Kc8 Bxe8 Ra7 Qd6 Rc7 Bd7+ Kb7 Qb4+ Ka7 Qxd4+ Rc5 Qxc5+ Kb7 Nd6+ Ka8 Rh8#
29 +94.15! 1.97G 0:14.64 Kg2!
29 +79.52! 1.96G 0:14.58 Kg2!
29 +67.89! 1.96G 0:14.52 Kg2!
29 +58.38! 1.95G 0:14.49 Kg2!
29 +41.71? 1.95G 0:14.48 Kg2 Qc7?
29 +67.91! 1.95G 0:14.48 Kg2!
29 +62.85! 1.95G 0:14.48 Kg2!
29 +58.71! 1.95G 0:14.48 Kg2!
29 +55.33! 1.95G 0:14.48 Kg2!
29 +52.54! 1.95G 0:14.48 Kg2!
29 +50.23! 1.95G 0:14.48 Kg2!
29 +48.15! 1.95G 0:14.48 Kg2!
29 +46.38! 1.95G 0:14.48 Kg2!
29 +45.00! 1.95G 0:14.48 Kg2!
29 +43.82! 1.92G 0:14.24 Kg2!
28 10 seconds
28 +42.89 1.91G 0:14.16 Kg2 Qc7 Rfh1 Qxh2+ Rxh2 dxe4 Qc5 Rad8 Qxc6 Re7 Qxe4 Ree8 Qb7 Rd2+ Kg1 Rg2+ Rxg2 Rf8 Qe7
28 +46.61! 1.91G 0:14.14 Kg2!
28 +38.50! 1.90G 0:14.10 Kg2!
28 +31.75! 1.85G 0:13.68 Kg2!
28 +26.72! 1.84G 0:13.59 Kg2!
28 +22.71! 1.82G 0:13.45 Kg2!
28 +19.51! 1.80G 0:13.37 Kg2!
28 +16.95! 1.80G 0:13.34 Kg2!
28 +14.92! 1.80G 0:13.33 Kg2!
28 +13.31! 1.66G 0:12.35 Kg2!
28 +12.04! 1.62G 0:12.06 Kg2!
28 +10.20? 1.57G 0:11.70 Kg2 Qc7?
28 +12.86! 1.48G 0:11.06 Kg2!
28 +12.24! 1.40G 0:10.47 Kg2!
28 +11.75! 1.30G 0:09.81 Kg2!
28 +11.37! 1.24G 0:09.40 Kg2!
28 +11.08! 1.16G 0:08.80 Kg2!
28 +10.86! 1.06G 0:08.07 Kg2!
27 +10.64 885.1M 0:06.83 Kg2 d4 Rfh1 Kf8 Qxd4 Ke7 Qc5+ Kd7 Rd1+ Kc7 Qd6+ Kb6 a5+ Ka7 Qc5+ Kb8 Bxc6 Ra7 Qd6+ Qc7 Bxe8 Qxd6 Rxd6 Rc7 Rh8 Rc5 Rxa6 Rxa5 Rxa5
27 +10.01! 771.4M 0:06.01 Kg2!
27 +9.48! 684.6M 0:05.38 Kg2!
27 +9.07! 612.2M 0:04.85 Kg2!
27 +8.75! 580.3M 0:04.62 Kg2!
27 +8.51! 553.7M 0:04.42 Kg2!
27 +8.32! 532.0M 0:04.26 Kg2!
26 +8.14 476.2M 0:03.84 Kg2 Bxa4 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Reb8 Qg7 Bc6 Qxf6 Rb4 Rd1 Re8 g7 Kc7 Qf7+ Kb6 Bf3 Rxb2 Qxe8 Bxe8 g8=Q Rxc2+ Ne2
26 +7.46! 453.1M 0:03.66 Kg2!
26 +6.91! 440.5M 0:03.56 Kg2!
26 +6.48! 436.0M 0:03.53 Kg2!
26 +6.15! 419.4M 0:03.40 Kg2!
26 +5.90! 408.9M 0:03.31 Kg2!
26 +5.71! 398.9M 0:03.23 Kg2!
26 +5.57! 382.9M 0:03.10 Kg2!
25 +5.43 331.0M 0:02.67 Kg2 Qc7 Rfh1 Qxh2+ Rxh2 Rad8 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Rd7 Bd3 Kc7 Bxa6 d4+ Kf2 Kb6 Be2 Kb7 a5 dxc3 Qxc3 Rc7 Qc5 Ka8 Qb6
24 +4.02 175.8M 0:01.41 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 Rh8 Rg1 Ke5 Kg2 Rhd8 Kf3 Rd2 g7 Rg8 Rh8 Rxg7 Rxg7 Rxc2 Rg2 Rc4 Re2+ Kd6 a5 Ra4 Bxa6
23 +3.83 130.5M 0:01.05 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 Rg8 Rg1 Kc5 b3 a5 Rf7 Rbf8 Rd1 Kb4 Rxf8 Rxf8 g7 Rg8 Rd7 Kc3 Rc7+ Kd4 Kg2 Ke5 Kf2 Kf6
22 +3.74 86.3M 0:00.70 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 a5 Rg1 Ke5 Rf7 Rf8 Re1+ Kf4 Rxe6 Kg5 Rxf8 Rxf8 Kg2 Rg8 Bf3 Kh6 b3 Rc8 c4 Rg8
21 +3.64 48.4M 0:00.40 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 Rg8 Rg1 a5 Rf7 Rgf8 Rd1+ Ke5 Rxf8 Rxf8 g7 Rg8 Rd7 Kf6 b4 axb4 a5 Kg6
20 +3.65 37.3M 0:00.31 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 a5 Rg1 Ke5 Rf7 Rf8 Re1+ Kd6 Rd1+ Ke5 Rxf8 Rxf8 g7 Rg8 Rd7 Kf4 Kg2 Kg5
19 +3.38 25.6M 0:00.22 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 a5 Rf7 Rh8+ Kg2 Rhf8 Rd1+ Ke5 Rdd7 Rxf7 Rxf7 Rg8 g7 Kf4 Rc7 Kg5 Kf3 Kg6
18 +3.44 17.3M 0:00.16 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 Rg8 Rg1 a5 Rf7 Rgf8 Rd1+ Ke5 Re1+ Kd6 Rxf8
17 +3.16 12.3M 0:00.11 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Bxa6 Rg8 Rg1 Rxb2 g7 Rb4 Rh8 Rxg7 Rxg7 Rxa4 Bb5 Ra1+ Kg2 Ke5
16 +2.88 6.65M 0:00.06 Qh3 Kf8 Nxd5 exd5 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Bd3 Qxf6 Rxf6 Bd7 Rh7 Be6 Kg2 Rb8 b3 Rb6 Kf2 Rg8 Ra7 Ke8 g7
15 +2.81 5.26M 0:00.05 Qh3 Kf8 Nxd5 exd5 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Bd3 Qxf6 Rxf6 Bxa4 Rh7 Bd7 Rd6 Ra7 Bf5 Re1+ Kh2
14 +2.68 3.97M 0:00.04 Qh3 Kf8 Nxd5 exd5 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Bd3 Bd7 Rh7 Qxf6 Rxf6
13 +2.08 3.07M 0:00.03 Qh3 Kf8 Nxd5 exd5 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Bd3 Qxf6 Rxf6 Bxa4 Rh7 Bd7 Rd6 Ra7 Kg1 Rc7
12 +2.02 2.63M 0:00.03 Qh3 Kf8 Nxd5 exd5 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Rh7 Qxf6 Rxf6 Rxe4 Rd6+ Ke8 Rxc6 Re1+ Kh2
11 +2.12 1.14M 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2 f5 Ne2 Rg8
10 +1.95 1.10M 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2 f5 Ne2
9 +2.18 458711 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2 Rab8 Rxf6
8 +2.06 355940 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2 Rac8 Kg1 Rc7 Rxf6
7 +2.94 133052 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Qxe7+ Kxe7
6 +2.87 121767 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Qxe7+ Kxe7 Bd3
5 +2.87 108950 0:00.00 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7
4 +2.84 97676 0:00.00 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Qxe7+ Kxe7
3 +2.89 85322 0:00.00 Qh3 Kf8 Qh8+ Ke7
2 +2.82 32769 0:00.00 Qh3 Kf8
1 NNUE evaluation using ninu.bin enabled
1 +1.77 17940 0:00.00 Bd3 Qxb2
0 #
mover viewpoint fewer / Multi-PV setting = 1 / more
exclude: none best +tail
dep score nodes time (not shown: tbhits knps seldep)
23 10 seconds
23 #8 869.6M 0:08.83 Rf3 Qc7 Rh7 Qf7 Rh8+ Kxh8 gxf7 g5 Rxf6 Kg7 f8=R Rxf8 Qxg5+ Kh8 Rh6#
22 #8 195.7M 0:01.91 Rf3 Qc7 Rh7 Qf7 Rh8+ Kxh8 gxf7 g5 Rxf6 Kg7 f8=R Rxf8 Qxg5+ Kh8 Rh6#
21 #9 110.7M 0:01.07 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
20 #9 46.6M 0:00.46 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
19 #9 43.3M 0:00.42 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
18 #9 38.6M 0:00.37 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
17 #9 38.6M 0:00.37 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
16 #9 38.6M 0:00.37 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
15 #9 38.5M 0:00.37 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
14 +5.48 6.01M 0:00.06 Bg2 d4 Qh3 Bxg2+ Rxg2 Rab8 Ne2 Kf8 Nxd4 Ke7 Qxe6+ Kd8 Qd6+ Kc8 Rf3 Qxf3 Qc5+ Kb7 Nxf3 Rbd8 a5 Re6 Kh2
13 +5.35 5.65M 0:00.06 Bg2 d4 Qh3 Bxg2+ Rxg2 Rab8 Ne2 d3 cxd3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Rf8 Qd4+ Qd5 Rxf8 Rxf8
12 +5.16 5.49M 0:00.06 Bg2 d4 Qh3 Bxg2+ Rxg2 Rab8 Qh7+ Kf8 Ne2 d3 cxd3 Ke7 Qxg7+ Kd6 Qxf6 Rh8+ Kg1 Rhf8 Qd4+ Qd5 Qxd5+ exd5 g7
11 +5.06 2.57M 0:00.03 Bg2 d4 Qh3 Bxg2+ Rxg2 Rab8 Qh7+ Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Rxb7 Ne4+ Ke5 Nxf6 Rh8+ Kg1 Rg7 Rg4 d3 cxd3
10 +3.55 891741 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2 f5 g7 Rg8 Rh7 Bc6 a5 Rab8 b3
9 +3.86 545557 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2 Bc6 Rxf6
8 +3.81 341104 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bd3 Rh8 Rxf6
7 +3.85 255871 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2
6 +4.01 213819 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7
5 +4.07 189201 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7
4 +4.12 179202 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7
3 +4.14 155644 0:00.01 Qh3 Kf8 Qh8+ Ke7
2 +4.89 40855 0:00.01 Qh3 Kf8
1 NNUE evaluation using eval.bin enabled
1 Found 510 tablebases
1 +3.23 6982 0:00.00 Bg2
0 #
BD with Night Nurse with pretty fast
mover viewpoint fewer / Multi-PV setting = 1 / more
exclude: none best +tail
dep score nodes time (not shown: tbhits knps seldep)
21 #8 145.5M 0:01.38 Rf3 Qc7 Rh7 Qf7 Rh8+ Kxh8 gxf7 g5 Rxf6 Kg7 f8=R Rxf8 Qxg5+ Kh8 Rh6#
20 #9 95.3M 0:00.89 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
19 #9 84.6M 0:00.78 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
18 #9 76.1M 0:00.69 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Qxe4 Kf8 Nd5 Qf7 Rh8+ Qg8 Rxg8+ Kxg8 Qh4 exd5 Qh8#
17 #10 71.1M 0:00.64 Kg2 Qc7 Rh7 Qa7 Qh3 Kf8 Rxf6+ Ke7 Qxe6+ Kd8 Qxc6 Qd7 Rd6 Ra7 Nxd5 Rxe4 Rxd7+ Rxd7 Qa8#
16 +7.63 24.7M 0:00.24 Kg2 Qa7 Qf4 Qd7 Qh4 Kf8 Rxf6+ Ke7 Rf7+ Kd6 Qg3+ e5 Nxd5 Rac8 Qa3+ Ke6 Rxd7 Bxd7 Qh3+ Kd6 Qd3 Be6 Nf6+ Ke7 Nxe8 Rxe8 Qxa6 Rd8 Rh7 Rg8 Rh5 Rd8 Qa7+ Rd7 Qc5+ Rd6 Rxe5
15 +5.48 11.1M 0:00.12 Kg2 Qc7 Rfh1 Qxh2+ Kxh2 f5 Bg2 Rab8 b3 Rb4 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qf6 d4 Bxc6 Kxc6 g7 Rbb8
14 +4.02 6.81M 0:00.08 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Ra7 Rh7 Rb8 Rd1+ Ke5 Bf3 Rxh7+ gxh7 Kf6
13 +3.94 4.72M 0:00.05 Bg2 Rab8 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 b3 Qxf6 Rxf6 Ke7 Rf7+ Kd6 Rhh7 Rg8 g7
12 +4.06 3.86M 0:00.04 Bg2 Rab8 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 b3 Qxf6 Rxf6 Ke7 Rf7+ Kd6 g7 Rg8 Ne2 Rb7 Rxb7 Bxb7 Rh7 Ke7
11 +3.99 3.32M 0:00.04 Bg2 Kf8 Qc5+ Kg8 Qd4 Qxb2 Qh4 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Rab8 Rh5 Rb4 Nxd5 Qxf6 Nxf6 Rc8 Bxc6
10 +3.86 2.24M 0:00.03 Bg2 Kf8 Qc5+ Kg8 Qd4 Qxb2 Qh4 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Qb4 Rh7
9 +2.71 2.09M 0:00.02 Bg2 Rab8 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Rf8 Qd4
8 +4.00 343402 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Qb4 Qf4+ Kc5 Bg2
7 +4.30 289738 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Kc8 Rh7 Bd7
6 +4.16 256541 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Qb6 Qf4+ Kd7
5 +3.92 177407 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Kc8
4 +4.01 143205 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8
3 +4.20 123035 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Kc8
2 +4.39 103641 0:00.01 Qh3 Kf8
1 NNUE evaluation using ninu.bin enabled
1 +1.59 18880 0:00.01 Bf3 Qxb2
0 #
Bluefish with Night Nurse finds Kg2 mate-in-9
mover viewpoint fewer / Multi-PV setting = 1 / more
exclude: none best +tail
dep score nodes time (not shown: tbhits knps seldep)
45 #9 4.59G 0:35.10 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
44 #9 4.18G 0:32.06 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
43 30 seconds
43 #9 3.85G 0:29.60 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
42 #9 3.56G 0:27.46 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
41 #9 3.32G 0:25.67 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
40 #9 3.13G 0:24.20 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
39 #9 2.96G 0:22.90 Kg2 Qc7 Rh7 d4 Rfh1 Bxe4+ Nxe4 Qxc2+ Kg3 Qc7+ Kf3 Kf8 Qa3+ Qd6 Qxd6+ Re7 Rh8#
38 #9 2.81G 0:21.70 Kg2 Qc7 Rh7 Bb7 Rfh1 Kf8 Nxd5 Qxc2+ Kg3 Qc7+ Kf3 Qg3+ Kxg3 exd5 Qc5+ Re7 Rh8#
37 #9 2.67G 0:20.60 Kg2 Qc7 Rh7 Bb7 Rfh1 Kf8 Nxd5 Qxc2+ Kg3 Qc7+ Kf3 Qg3+ Kxg3 exd5 Qc5+ Re7 Rh8#
36 20 seconds
36 #9 2.57G 0:19.75 Kg2 Qc7 Rh7 Bb7 Rfh1 Kf8 Nxd5 Qxc2+ Kg3 Qc7+ Kf3 Qg3+ Kxg3 exd5 Qc5+ Re7 Rh8#
35 #10 2.48G 0:19.05 Kg2 Qc7 Rh7 Bb7 Qh3 Kf8 Rxf6+ Ke7 Rxe6+ Kd7 Rxg7+ Re7 Rf6+ Kd8 Rf8+ Re8 Rxe8+ Kxe8 Qh8#
34 #10 2.38G 0:18.20 Kg2 Qc7 Rh7 Bb7 Qh3 Kf8 Rxf6+ Ke7 Rxe6+ Kd7 Rxg7+ Re7 Rf6+ Kd8 Rf8+ Re8 Rxe8+ Kxe8 Qh8#
33 #10 2.33G 0:17.81 Kg2 Qc7 Rh7 Bb7 Qh3 Kf8 Rxf6+ Ke7 Rxe6+ Kd7 Rxg7+ Re7 Rf6+ Kd8 Rf8+ Re8 Rxe8+ Kxe8 Qh8#
32 #13 2.19G 0:16.58 Kg2 Qc7 Rfh1 Qxh2+ Rxh2 Rad8 Qc5 Bd7 Nxd5 exd5 Bxd5+ Be6 Bxe6+ Rxe6 Qc7 Re2+ Kf3 Re3+ Kxe3 Re8+ Kf2 Re7 Qb8+ Re8 Qxe8#
31 #13 2.12G 0:15.94 Kg2 Qc7 Rfh1 Qxh2+ Rxh2 Rad8 Qc5 Bd7 Nxd5 exd5 Bxd5+ Be6 Bxe6+ Rxe6 Qc7 Re2+ Kf3 Re3+ Kxe3 Re8+ Kf2 Re7 Qb8+ Re8 Qxe8#
30 #13 2.07G 0:15.51 Kg2 Qc7 Rfh1 Qxh2+ Rxh2 Rad8 Qc5 Bd7 Nxd5 exd5 Bxd5+ Be6 Bxe6+ Rxe6 Qc7 Re2+ Kf3 Re3+ Kxe3 Re8+ Kf2 Re7 Qb8+ Re8 Qxe8#
29 #15 1.99G 0:14.77 Kg2 Qc7 Rfh1 Qxh2+ Rxh2 d4 Qh3 Kf8 Bxc6 Ke7 Ne4 Kd8 Qa3 Kc8 Bxe8 Ra7 Qd6 Rc7 Bd7+ Kb7 Qb4+ Ka7 Qxd4+ Rc5 Qxc5+ Kb7 Nd6+ Ka8 Rh8#
29 +94.15! 1.97G 0:14.64 Kg2!
29 +79.52! 1.96G 0:14.58 Kg2!
29 +67.89! 1.96G 0:14.52 Kg2!
29 +58.38! 1.95G 0:14.49 Kg2!
29 +41.71? 1.95G 0:14.48 Kg2 Qc7?
29 +67.91! 1.95G 0:14.48 Kg2!
29 +62.85! 1.95G 0:14.48 Kg2!
29 +58.71! 1.95G 0:14.48 Kg2!
29 +55.33! 1.95G 0:14.48 Kg2!
29 +52.54! 1.95G 0:14.48 Kg2!
29 +50.23! 1.95G 0:14.48 Kg2!
29 +48.15! 1.95G 0:14.48 Kg2!
29 +46.38! 1.95G 0:14.48 Kg2!
29 +45.00! 1.95G 0:14.48 Kg2!
29 +43.82! 1.92G 0:14.24 Kg2!
28 10 seconds
28 +42.89 1.91G 0:14.16 Kg2 Qc7 Rfh1 Qxh2+ Rxh2 dxe4 Qc5 Rad8 Qxc6 Re7 Qxe4 Ree8 Qb7 Rd2+ Kg1 Rg2+ Rxg2 Rf8 Qe7
28 +46.61! 1.91G 0:14.14 Kg2!
28 +38.50! 1.90G 0:14.10 Kg2!
28 +31.75! 1.85G 0:13.68 Kg2!
28 +26.72! 1.84G 0:13.59 Kg2!
28 +22.71! 1.82G 0:13.45 Kg2!
28 +19.51! 1.80G 0:13.37 Kg2!
28 +16.95! 1.80G 0:13.34 Kg2!
28 +14.92! 1.80G 0:13.33 Kg2!
28 +13.31! 1.66G 0:12.35 Kg2!
28 +12.04! 1.62G 0:12.06 Kg2!
28 +10.20? 1.57G 0:11.70 Kg2 Qc7?
28 +12.86! 1.48G 0:11.06 Kg2!
28 +12.24! 1.40G 0:10.47 Kg2!
28 +11.75! 1.30G 0:09.81 Kg2!
28 +11.37! 1.24G 0:09.40 Kg2!
28 +11.08! 1.16G 0:08.80 Kg2!
28 +10.86! 1.06G 0:08.07 Kg2!
27 +10.64 885.1M 0:06.83 Kg2 d4 Rfh1 Kf8 Qxd4 Ke7 Qc5+ Kd7 Rd1+ Kc7 Qd6+ Kb6 a5+ Ka7 Qc5+ Kb8 Bxc6 Ra7 Qd6+ Qc7 Bxe8 Qxd6 Rxd6 Rc7 Rh8 Rc5 Rxa6 Rxa5 Rxa5
27 +10.01! 771.4M 0:06.01 Kg2!
27 +9.48! 684.6M 0:05.38 Kg2!
27 +9.07! 612.2M 0:04.85 Kg2!
27 +8.75! 580.3M 0:04.62 Kg2!
27 +8.51! 553.7M 0:04.42 Kg2!
27 +8.32! 532.0M 0:04.26 Kg2!
26 +8.14 476.2M 0:03.84 Kg2 Bxa4 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Reb8 Qg7 Bc6 Qxf6 Rb4 Rd1 Re8 g7 Kc7 Qf7+ Kb6 Bf3 Rxb2 Qxe8 Bxe8 g8=Q Rxc2+ Ne2
26 +7.46! 453.1M 0:03.66 Kg2!
26 +6.91! 440.5M 0:03.56 Kg2!
26 +6.48! 436.0M 0:03.53 Kg2!
26 +6.15! 419.4M 0:03.40 Kg2!
26 +5.90! 408.9M 0:03.31 Kg2!
26 +5.71! 398.9M 0:03.23 Kg2!
26 +5.57! 382.9M 0:03.10 Kg2!
25 +5.43 331.0M 0:02.67 Kg2 Qc7 Rfh1 Qxh2+ Rxh2 Rad8 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxf6 Rd7 Bd3 Kc7 Bxa6 d4+ Kf2 Kb6 Be2 Kb7 a5 dxc3 Qxc3 Rc7 Qc5 Ka8 Qb6
24 +4.02 175.8M 0:01.41 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 Rh8 Rg1 Ke5 Kg2 Rhd8 Kf3 Rd2 g7 Rg8 Rh8 Rxg7 Rxg7 Rxc2 Rg2 Rc4 Re2+ Kd6 a5 Ra4 Bxa6
23 +3.83 130.5M 0:01.05 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 Rg8 Rg1 Kc5 b3 a5 Rf7 Rbf8 Rd1 Kb4 Rxf8 Rxf8 g7 Rg8 Rd7 Kc3 Rc7+ Kd4 Kg2 Ke5 Kf2 Kf6
22 +3.74 86.3M 0:00.70 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 a5 Rg1 Ke5 Rf7 Rf8 Re1+ Kf4 Rxe6 Kg5 Rxf8 Rxf8 Kg2 Rg8 Bf3 Kh6 b3 Rc8 c4 Rg8
21 +3.64 48.4M 0:00.40 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 Rg8 Rg1 a5 Rf7 Rgf8 Rd1+ Ke5 Rxf8 Rxf8 g7 Rg8 Rd7 Kf6 b4 axb4 a5 Kg6
20 +3.65 37.3M 0:00.31 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 a5 Rg1 Ke5 Rf7 Rf8 Re1+ Kd6 Rd1+ Ke5 Rxf8 Rxf8 g7 Rg8 Rd7 Kf4 Kg2 Kg5
19 +3.38 25.6M 0:00.22 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 a5 Rf7 Rh8+ Kg2 Rhf8 Rd1+ Ke5 Rdd7 Rxf7 Rxf7 Rg8 g7 Kf4 Rc7 Kg5 Kf3 Kg6
18 +3.44 17.3M 0:00.16 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Rh7 Rg8 Rg1 a5 Rf7 Rgf8 Rd1+ Ke5 Re1+ Kd6 Rxf8
17 +3.16 12.3M 0:00.11 Bg2 f5 Qh3 Kf8 Nxd5 Bxd5 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bxb7 Rab8 Bxa6 Rg8 Rg1 Rxb2 g7 Rb4 Rh8 Rxg7 Rxg7 Rxa4 Bb5 Ra1+ Kg2 Ke5
16 +2.88 6.65M 0:00.06 Qh3 Kf8 Nxd5 exd5 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Bd3 Qxf6 Rxf6 Bd7 Rh7 Be6 Kg2 Rb8 b3 Rb6 Kf2 Rg8 Ra7 Ke8 g7
15 +2.81 5.26M 0:00.05 Qh3 Kf8 Nxd5 exd5 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Bd3 Qxf6 Rxf6 Bxa4 Rh7 Bd7 Rd6 Ra7 Bf5 Re1+ Kh2
14 +2.68 3.97M 0:00.04 Qh3 Kf8 Nxd5 exd5 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Bd3 Bd7 Rh7 Qxf6 Rxf6
13 +2.08 3.07M 0:00.03 Qh3 Kf8 Nxd5 exd5 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Bd3 Qxf6 Rxf6 Bxa4 Rh7 Bd7 Rd6 Ra7 Kg1 Rc7
12 +2.02 2.63M 0:00.03 Qh3 Kf8 Nxd5 exd5 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Rh7 Qxf6 Rxf6 Rxe4 Rd6+ Ke8 Rxc6 Re1+ Kh2
11 +2.12 1.14M 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2 f5 Ne2 Rg8
10 +1.95 1.10M 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2 f5 Ne2
9 +2.18 458711 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2 Rab8 Rxf6
8 +2.06 355940 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd6 Qxb7 Bxb7 Bg2 Rac8 Kg1 Rc7 Rxf6
7 +2.94 133052 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Qxe7+ Kxe7
6 +2.87 121767 0:00.01 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Qxe7+ Kxe7 Bd3
5 +2.87 108950 0:00.00 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7
4 +2.84 97676 0:00.00 Qh3 Kf8 Qh8+ Ke7 Qxg7+ Kd8 Qxf6+ Qe7 Qxe7+ Kxe7
3 +2.89 85322 0:00.00 Qh3 Kf8 Qh8+ Ke7
2 +2.82 32769 0:00.00 Qh3 Kf8
1 NNUE evaluation using ninu.bin enabled
1 +1.77 17940 0:00.00 Bd3 Qxb2
0 #
-
Jouni
- Posts: 3281
- Joined: Wed Mar 08, 2006 8:15 pm
Re: Interesting mate in 8
Dann You should invest for faster CPU 
. Stockfish solves fast:
Analysis by Stockfish 110121:
1.Kg2 Qc7 2.Rh7 d4 3.Rfh1 Bxe4+ 4.Qxe4 Kf8 5.Nd5 Qf7 6.Rh8+ Qg8 7.Rxg8+ Kxg8 8.Qh4 exd5 9.Qh8#
+- (#9) Depth: 52/18 00:00:02 24026kN, tb=29
1.Rf3 Qc7 2.Rh7 Qf7 3.Rh8+ Kxh8 4.gxf7 g5 5.Rxf6 Kg7 6.f8R Rxf8 7.Qxg5+ Kh8 8.Rh6#
+- (#8) Depth: 53/18 00:00:02 28540kN, tb=29
. Stockfish solves fast:Analysis by Stockfish 110121:
1.Kg2 Qc7 2.Rh7 d4 3.Rfh1 Bxe4+ 4.Qxe4 Kf8 5.Nd5 Qf7 6.Rh8+ Qg8 7.Rxg8+ Kxg8 8.Qh4 exd5 9.Qh8#
+- (#9) Depth: 52/18 00:00:02 24026kN, tb=29
1.Rf3 Qc7 2.Rh7 Qf7 3.Rh8+ Kxh8 4.gxf7 g5 5.Rxf6 Kg7 6.f8R Rxf8 7.Qxg5+ Kh8 8.Rh6#
+- (#8) Depth: 53/18 00:00:02 28540kN, tb=29
Jouni
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Dann Corbit
- Posts: 12537
- Joined: Wed Mar 08, 2006 8:57 pm
- Location: Redmond, WA USA
Re: Interesting mate in 8
I guess mine loaded up on krill and he wasn't very hungry.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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MikeGL
- Posts: 1010
- Joined: Thu Sep 01, 2011 2:49 pm
Re: Interesting mate in 8
Good position. Thanks for sharing.Dann Corbit wrote: ↑Wed Jan 13, 2021 9:26 pm [d]r3r1k1/1q4p1/p1b1ppP1/3p4/P3B3/2N1Q3/1PP4R/5R1K w - -
Rf3 is mate in 8.
There are a couple other mating moves.
And engines like Bg2 which probably wins.
But the thing that is interesting to me is that I think most humans would play the obvious looking Rf3.
Stockfish took a long time to find it on my machine.
Winning plan: Rf3 Qc7 Rh7 Qf7 Rh8+ Kxh8 gxf7 g5 Rxf6 Kg7 f8=R Rxf8 Qxg5+ Kh8 Rh6#
I checked with my 12 year old laptop, 32-bit and set to use only single core for this position
SF12 with NNUE: Takes forever and prefers Bg2 (single core)
SF12 untick / disable NNUE: Finds mate #8 within 14 seconds. (single core)
I told my wife that a husband is like a fine wine; he gets better with age. The next day, she locked me in the cellar.