SF 11 on Christmas?

[Ovyron]

Because there is no progress in quality of moves.
There is only difference in ELO.

Okay, this isn't true. I might be the person that has used the most Stockfish versions and derivatives side by side (I just used Jeremy Bernstein's 2.1.1 PA the other day), and I can say that from version to version there's critical positions where the old version is blind (mainly, it builds a PV based on false premises by missing key opponent's moves) and the new version shows completely different score because it does see the key moves, which leads to better moves an evaluation.

To better chess.

So I propose you the following: define what chess quality is and build a test that can tell us what's what, then entries will run inside the test blindly (you don't know who's playing) and see if Stockfish passes the test.

Like, you have all the time in the world to build a position where A/B engines show poor quality, and tell us how continuing with the adding ELO approach would never improve it. Because if one day there's a Stockfish version that plays the wanted move it'll show you were wrong, but until that happens, this all is just hand-waving.

[carldaman]

Stockfish naysayers should take a look at Weakfish, which is basically SF eval without the search bells and whistles, if I understand it correctly- the author M. Byrne could explain it better I'm sure.

The first thing that strikes me is that Weakfish does not appear to be weak at all in an absolute sense, probably being stronger than Magnus Carlsen as well as most engines rated below 3000 CCRL ELo.

Then, the real pleasant discovery is its playing style - very attractive, favoring creative attacking play.

I am under the impression that originally Mike Byrne expected it to be substantially weaker, closer to 2400 Elo than 3000, so it could be used as a sparring partner for humans, especially by using lower strength levels.

I'll post some games when I have the time.

Weakfish link: https://github.com/MichaelB7/Stockfish/releases/tag/XR7

[Ovyron]

Stockfish naysayers should take a look at Weakfish, which is basically SF eval without the search bells and whistles, if I understand it correctly- the author M. Byrne could explain it better I'm sure.

I'm still waiting for Bizarrefish, which was Weakfish without Stockfish's eval, I think.

[Wilson]

The real change comes not from stockfish but from LC0.

At the moment we need both. For tactical positions an AB engine is still the best choice.

[JohnW]

Why ? Who cares if there is a progress of 40 ELO ?

There will be no progress in computerchess by this kind of programming.

Buy a computer twice as fast and use the old version. Will bring more ELO.

Wouldn't the same be true for Lc0 if you could buy the next generation of video cards?

[Joerg Oster]

SF was closest to winning at move 57 when the syzygy tablebases say
Ra5+ DTZ 36 but played Nf3 that is only DTZ 54

I think that the problem is that the stockfish team do not test from random tablebases positions and only test from random opening positions.
They should test patches from random 7 piece tablabases positions to see if there is an idea that can give an improvement in these cases.

It is possible that some patch give an improvement in 7 piece tablabases positions but is counterproductive in normal games but even in this case it is good to know it and it is possible to use the patch only when the engine get to 7 piece tablbases positions.

No, the 'problem' was the missing dtz file(s) for the very difficult 7-piece endgame.
Probably no AB-engine can find the win here on its own at the time-control they're playing.

[mclane]

Why ? Who cares if there is a progress of 40 ELO ?

There will be no progress in computerchess by this kind of programming.

Buy a computer twice as fast and use the old version. Will bring more ELO.

Wouldn't the same be true for Lc0 if you could buy the next generation of video cards?

No the neural net plays a better chess.

[Uri Blass]

SF was closest to winning at move 57 when the syzygy tablebases say
Ra5+ DTZ 36 but played Nf3 that is only DTZ 54

I think that the problem is that the stockfish team do not test from random tablebases positions and only test from random opening positions.
They should test patches from random 7 piece tablabases positions to see if there is an idea that can give an improvement in these cases.

It is possible that some patch give an improvement in 7 piece tablabases positions but is counterproductive in normal games but even in this case it is good to know it and it is possible to use the patch only when the engine get to 7 piece tablbases positions.

No, the 'problem' was the missing dtz file(s) for the very difficult 7-piece endgame.
Probably no AB-engine can find the win here on its own at the time-control they're playing.

I am not sure about it.
At the relevant point of the game stockfish without tablebases find the right move with my relatively slow computer Ra5+ without changing its mind
(I used 3 cores amd changed later to 1 core because stockfish with 3 cores is not deterministic).

I read that stockfish saw mate scores so it probably used tablebases that show it win or draw and the problem is of course is to choose the right winning move.

stockfish at deterministic default mode single core 1024 mbytes hash has the following analysis(the first move 57.Ra5+ is always correct but it does not see the second move Ne2).

I used default contempt and latest developement version from 10.12.2019 and here is the analysis

[d]8/8/R5p1/7k/3N1K1P/8/8/6r1 w - - 7 57
Stockfish_19121008_x64_modern:
1/2 00:00 109 109k +2.99 57.Ra5+ Kh6
2/3 00:00 331 166k +3.33 57.Ra5+ Kh6 58.Nf3
3/8 00:00 456 228k +3.42 57.Ra5+ g5+ 58.Rxg5+ Rxg5 59.hxg5 Kg6 60.Nf5
4/8 00:00 528 264k +3.99 57.Ra5+ g5+ 58.Rxg5+ Rxg5
5/9 00:00 796 398k +3.84 57.Ra5+ g5+ 58.Rxg5+ Rxg5 59.hxg5 Kg6 60.Nc6 Kh5 61.Ne5
6/11 00:00 1k 526k +4.08 57.Ra5+ g5+ 58.Rxg5+ Rxg5 59.hxg5 Kg6 60.Nc6 Kg7 61.Ne5
7/14 00:00 2k 588k +4.36 57.Ra5+ g5+ 58.Rxg5+ Rxg5 59.hxg5 Kg6 60.Nc6 Kf7 61.Ne5+ Kg7 62.Kg4
8/17 00:00 3k 985k +4.51 57.Ra5+ g5+ 58.Rxg5+ Rxg5 59.hxg5 Kg6 60.Nc6 Kf7 61.Kf5 Kf8 62.Kf6
9/25 00:00 40k 1,366k +2.58 57.Ra5+ Kh6 58.Rd5 Rh1 59.Nf3 Rc1 60.Rd6 Rc4+ 61.Rd4 Rc6 62.Ra4 Rc7 63.Kg4
10/21 00:00 57k 1,457k +2.81 57.Ra5+ Kh6 58.Rd5 Rh1 59.Nf3 Rc1 60.Rd8 Rc4+ 61.Rd4 Rc6 62.Kg4 Rc1
11/20 00:00 82k 1,458k +2.76 57.Ra5+ Kh6 58.Rd5 Rb1 59.Nf3 Rb4+ 60.Rd4 Rb5 61.Kg4 Rc5 62.Rb4 Ra5 63.Re4 Rd5 64.Re6 Kg7
12/24 00:00 114k 1,480k +2.55 57.Ra5+ Kh6 58.Rd5 Rb1 59.Nf3 Rb4+ 60.Rd4 Rb5 61.Re4 Rc5 62.Kg4 Rc3 63.Rf4 Kg7 64.Rd4 Rc7 65.Kg5
13/28 00:00 166k 1,526k +2.65 57.Ra5+ Kh6 58.Nf3 Rb1 59.Rd5 Rb4+ 60.Rd4 Rb5 61.Rd7 Rb4+ 62.Kg3 Ra4 63.Rd5 Rc4 64.Ne5 Rb4 65.Rd7
14/26 00:00 229k 1,557k +2.52 57.Ra5+ Kh6 58.Nf3 Rb1 59.Rd5 Rb4+ 60.Rd4 Rb5 61.Re4 Rf5+ 62.Kg4 Rc5 63.Rd4 Rc1 64.Ra4 Rc2 65.Ne5 Rc1 66.Kf4
15/32 00:00 289k 1,582k +2.64 57.Ra5+ Kh6 58.Nf3 Rb1 59.Ra4 Rb5 60.Re4 Rb2 61.Rc4 Rb1 62.Kg4 Rb2 63.Ra4 Rc2 64.Ne5
16/23 00:00 307k 1,582k +2.64 57.Ra5+ Kh6 58.Nf3 Rb1 59.Ra4 Rb5 60.Re4 Rb2 61.Rc4 Rb1 62.Kg4 Rb2 63.Ra4 Rb1 64.Rd4 Rb5 65.Re4 Rb2 66.Rc4
17/25 00:00 349k 1,594k +2.63 57.Ra5+ Kh6 58.Nf3 Rb1 59.Ra4 Rb5 60.Re4 Rb2 61.Rc4 Rb3 62.Rd4 Rb1 63.Kg4 Rb5 64.Rc4 Rb1 65.Ra4 Rc1 66.Rd4 Rc5 67.Rb4 Rc1 68.Ne5
18/29 00:00 403k 1,599k +2.63 57.Ra5+ Kh6 58.Nf3 Rb1 59.Ra4 Rb5 60.Re4 Rb2 61.Rc4 Kh5 62.Rd4 Rb5 63.Kg3 Rc5 64.Rd8 Kh6 65.Rd7 Rb5 66.Kg4 Rb4+ 67.Rd4 Rb5 68.Rc4
19/29 00:00 459k 1,606k +2.63 57.Ra5+ Kh6 58.Nf3 Rb1 59.Ra4 Rb5 60.Re4 Rb2 61.Rc4 Kh5 62.Rd4 Rb5 63.Kg3 Rc5 64.Rb4 Kh6 65.Kg4 Rc1 66.Rd4 Rc5 67.Ng5 Rc3 68.Ra4 Rc7
20/29 00:00 483k 1,617k +2.63 57.Ra5+ Kh6 58.Nf3 Rb1 59.Ra4 Rb5 60.Re4 Rb2 61.Rc4 Kh5 62.Rd4 Rb5 63.Kg3 Rc5 64.Rb4 Kh6 65.Kg4 Rc1 66.Ne5 Rg1+ 67.Kh3 Rh1+ 68.Kg3 Rg1+ 69.Kf2 Rc1 70.Rb7 Ra1
21/34 00:00 670k 1,647k +2.51 57.Ra5+ Kh6 58.Nf3 Rb1 59.Ra4 Rb5 60.Re4 Rb2 61.Rc4 Kh5 62.Rd4 Rb5 63.Kg3 Kh6 64.Kg4 Rb6 65.Rc4 Rb5 66.Ng5 Rb1 67.Nf7+ Kg7 68.Ne5 Rb5 69.Kf4 Kh6 70.Rd4 Rb1 71.Ra4
22/45 00:00 837k 1,674k +2.63 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rc1 61.Rb7 Rc4+ 62.Kg3 Rc5 63.Rb4 Rc3 64.Rb8 Kg7 65.Rb6 Kh6 66.Rd6 Rc5 67.Rd4 Kh5 68.Rb4 Kh6 69.Rb7 Rc3
23/36 00:00 994k 1,687k +2.63 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rc1 61.Rb7 Rc4+ 62.Kg3 Rc5 63.Rb8 Rc3 64.Rb4 Rc5 65.Kg4 Rc1 66.Kf4 Ra1 67.Rb8 Ra4+ 68.Kg3 Kg7 69.Rb6 Kh6 70.Ne5 Kh5 71.Rb8
24/29 00:00 1,091k 1,699k +2.63 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rc1 61.Rb7 Rc4+ 62.Kg3 Rc5 63.Rb4 Rc3 64.Rb8 Kg7 65.Rb7+ Kh6 66.Rb4 Rc5 67.Kg4 Rd5 68.Rb7 Rc5 69.Rb8 Ra5 70.Rh8+ Kg7 71.Rd8
25/37 00:00 1,363k 1,721k +2.62 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rc1 61.Rb7 Rc4+ 62.Kg3 Rc5 63.Rb4 Rc3 64.Rb8 Kg7 65.Rb7+ Kh6 66.Rb4 Ra3 67.Kf4 Ra1 68.Rb7 Ra4+ 69.Kg3 Ra5 70.Rb8 Rd5 71.Kg4 Ra5 72.Rh8+ Kg7
26/34 00:00 1,510k 1,732k +2.62 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rc1 61.Rb7 Rc4+ 62.Kg3 Rc5 63.Rb4 Ra5 64.Rb8 Rd5 65.Kg4 Ra5 66.Rb6 Ra4+ 67.Kg3 Ra3 68.Rb8 Ra5 69.Rb4 Rc5 70.Kg4 Ra5 71.Ng5 Ra3
27/37 00:00 1,664k 1,745k +2.62 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rc1 61.Rb7 Rc4+ 62.Kg3 Rc5 63.Rb4 Ra5 64.Rb8 Rd5 65.Kg4 Ra5 66.Rb6 Ra4+ 67.Kg3 Ra3 68.Rb8 Ra4 69.Rh8+ Kg7 70.Rc8 Kh6 71.Ne5 Ra3+ 72.Kg4 Ra4+ 73.Rc4 Ra5 74.Nf7+ Kg7 75.Ng5
28/34 00:01 1,873k 1,759k +2.62 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rc1 61.Rb7 Rc4+ 62.Kg3 Rc5 63.Rb4 Ra5 64.Rb8 Rd5 65.Kg4 Ra5 66.Rb7 Ra4+ 67.Kg3 Ra3 68.Rb5 Ra4 69.Rb8 Ra5 70.Rb4 Rc5 71.Kg4 Ra5 72.Rf4 Rb5 73.Rd4 Rb1
29/36 00:01 2,117k 1,769k +2.62 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rc1 61.Rb7 Rc4+ 62.Kg3 Rc5 63.Rb4 Ra5 64.Rb8 Rd5 65.Kg4 Ra5 66.Rb7 Ra4+ 67.Kg3 Ra3 68.Rb5 Ra4 69.Ne5 Ra3+ 70.Kg4 Ra1 71.Rc5 Ra4+ 72.Rc4 Ra5 73.Nf7+ Kg7 74.Ng5 Kh6
30/50 00:01 2,448k 1,784k +2.62 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rc1 61.Rb7 Rc4+ 62.Kg3 Rc5 63.Rb4 Ra5 64.Rb8 Rd5 65.Kg4 Ra5 66.Rh8+ Kg7 67.Rd8 Kh6 68.Rd4 Ra1 69.Rd5 Ra3 70.Rb5 Ra4+ 71.Kg3 Ra3 72.Rb8 Ra4 73.Rb6 Ra3 74.Rb5 Ra4 75.Rb8
31/52 00:01 3,148k 1,805k +2.62 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rc1 61.Rb7 Rc4+ 62.Kg3 Rc5 63.Rb4 Ra5 64.Rb8 Ra4 65.Rh8+ Kg7 66.Rd8 Kh6 67.Rb8 Ra5 68.Rb4 Ra1 69.Kg4 Ra5 70.Ng5 Ra7 71.Rd4 Ra1 72.Nf3 Rc1 73.Ra4 Rc5 74.Ng5 Rd5 75.Ne6 Rd1
32/44 00:02 3,732k 1,818k +2.62 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rc1 61.Rb7 Rc4+ 62.Kg3 Rc5 63.Rb4 Ra5 64.Rb8 Ra4 65.Rh8+ Kg7 66.Rd8 Kh6 67.Rb8 Ra5 68.Rb4 Kh5 69.Re4 Kh6 70.Kg4 Ra1 71.Rb4 Rc1 72.Ne5 Rg1+ 73.Kh3 Rh1+ 74.Kg3 Rg1+ 75.Kf2 Ra1 76.Ng4+ Kh5 77.Nf6+ Kh6
33/60 00:03 6,555k 1,841k +2.56 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rc1 61.Rb7 Rc4+ 62.Kg3 Rc5 63.Rb4 Ra5 64.Rb8 Ra4 65.Rh8+ Kg7 66.Rd8 Kh6 67.Rb8 Ra5 68.Rh8+ Kg7 69.Rd8 Kh6 70.Kg4 Ra4+ 71.Rd4 Ra5 72.Re4 Ra1 73.Rb4 Rc1 74.Ne5 Rg1+ 75.Kh3 Rh1+ 76.Kg2 Ra1 77.Ng4+ Kh5 78.Nf6+ Kh6 79.Rb7 g5 80.h5 Ra2+ 81.Kh3 Ra3+ 82.Kg4 Ra4+ 83.Kf5 Ra5+ 84.Ke6
34/45 00:04 7,686k 1,853k +2.56 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rc1 61.Rb7 Rc4+ 62.Kg3 Rc5 63.Rb4 Ra5 64.Rb8 Ra4 65.Rh8+ Kg7 66.Rd8 Ra3 67.Kg4 Kh6 68.Rd4 Ra1 69.Rb4 Ra3 70.Ng5 Ra7 71.Rd4 Rb7 72.Nh3 Rb1 73.Rd6 Kg7 74.Re6 Ra1 75.Ng5 Ra7 76.Nf3
35/49 00:05 9,954k 1,873k +2.56 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rf2 61.Kg3 Ra2 62.Rb5 Ra4 63.Rd5 Rb4 64.Rd8 Rb3 65.Kf4 Rb4+ 66.Rd4 Rb2 67.Re4 Rb1 68.Kg4 Rb2 69.Ne5 Rb5 70.Nf7+ Kg7 71.Ng5 Kh6 72.Rf4 Rb1 73.Nf7+ Kg7 74.Ne5 Rb5 75.Nf3 Ra5 76.Ng5 Kh6 77.Rb4 Ra7
36/43 00:05 10,825k 1,883k +2.56 57.Ra5+ Kh6 58.Rb5 Rc1 59.Rb4 Rf1+ 60.Nf3 Rf2 61.Kg3 Ra2 62.Rb5 Ra4 63.Rb1 Ra3 64.Rb6 Kh5 65.Rb5+ Kh6 66.Rg5 Rb3 67.Rd5 Ra3 68.Kg4 Ra2 69.Rd4 Rg2+ 70.Kh3 Ra2 71.Ng5 Kh5 72.Kg3 Ra3+ 73.Nf3 Ra5 74.Rb4 Ra3 75.Rb6 Kh6 76.Kg2 Ra7 77.Ne5
37/52+ 00:07 13,926k 1,806k +2.68 57.Ra5+
37/53 00:08 15,913k 1,796k +2.74 57.Ra5+ Kh6 58.Nf3 Rb1 59.Rd5 Rb4+ 60.Rd4 Rb2 61.Kg4 Rg2+ 62.Kh3 Re2 63.Rd3 Rb2 64.Ne5 Rb5 65.Nf7+ Kg7 66.Ng5 Kh6 67.Kg3 Rb7 68.Nh3 Rb1 69.Rd4 Rc1 70.Kg4 Ra1 71.Rc4 Rb1 72.Rc6 Kg7 73.Re6 Rf1 74.Ng5 Rg1+ 75.Kf3 Rh1 76.Kg3 Rg1+ 77.Kf2 Ra1 78.Re7+ Kf8 79.Rf7+ Kg8
38/53+ 00:12 21,608k 1,792k +2.86 57.Ra5+
38/53+ 00:14 25,247k 1,784k +2.98 57.Ra5+
38/58+ 00:15 27,295k 1,780k +3.15 57.Ra5+
38/58+ 00:16 29,561k 1,793k +3.38 57.Ra5+
38/58+ 00:18 33,215k 1,809k +3.69 57.Ra5+
38/61 00:19 34,612k 1,801k +3.69 57.Ra5+ Kh6 58.Ra8 Re1 59.Nf3 Rd1 60.Kg4 Rd5 61.Rh8+ Kg7 62.Re8 Kh6 63.Ne5 Rb5 64.Nf7+ Kg7 65.Ng5 Rb4+ 66.Re4 Rb7 67.Ne6+ Kh6 68.Rf4 Rb1 69.Rf8 Rb4+ 70.Nf4 Kg7 71.Rd8 Rb1 72.Rd6 Rg1+ 73.Kh3 Rh1+ 74.Kg3 Kh7 75.Nh3 Rb1 76.Ng5+ Kg7 77.Rd7+ Kf6 78.Kf4 Rf1+ 79.Nf3 Ke6 80.Rc7 Kf6 81.Rc6+ Kg7 82.Kg3 Rb1
39/70+ 00:21 39,554k 1,819k +3.82 57.Ra5+
39/70+ 00:25 45,963k 1,837k +3.95 57.Ra5+
39/70+ 00:27 51,840k 1,853k +4.13 57.Ra5+
39/70 00:29 55,703k 1,859k +4.13 57.Ra5+ Kh6 58.Ra8 Re1 59.Nf3 Rd1 60.Kg4 Rd5 61.Rh8+ Kg7 62.Re8 Kh6 63.Ne5 Rb5 64.Nf7+ Kg7 65.Ng5 Rb4+ 66.Re4 Rb7 67.Rd4 Kh6 68.Nh3 Rb1 69.Rd6 Kg7 70.Nf4 Rg1+ 71.Kh3 Rh1+ 72.Kg3 Kh7 73.Nh3 Ra1 74.Ng5+ Kg7 75.Rd7+ Kf6 76.Rf7+ Ke5 77.Nh3 Ke6 78.Rf4 Ra2 79.Rf1 Ke7 80.Nf4 Ra6 81.Kg4 Kf7 82.Rc1 Kg7 83.Rb1 Kf6 84.Rd1 Ra4 85.Rd6+ Kg7 86.Kg5 Ra5+ 87.Rd5
40/65+ 00:35 66,270k 1,868k +4.25 57.Ra5+
40/65+ 00:42 79,725k 1,885k +4.38 57.Ra5+
40/65+ 00:45 85,826k 1,894k +4.56 57.Ra5+
40/65+ 00:47 91,227k 1,902k +4.80 57.Ra5+
40/67+ 00:56 106,884k 1,906k +5.13 57.Ra5+
40/67 00:57 108,973k 1,909k +5.13 57.Ra5+ Kh6 58.Ne6 Rf1+ 59.Kg4 Rg1+ 60.Kf3 Re1 61.Ra6 Rh1 62.Ra8 Kh7 63.Ng5+ Kh6 64.Rh8+ Kg7 65.Rh7+ Kg8 66.Kg2 Rd1 67.Rb7 Re1 68.Kg3 Rf1 69.Nh7 Rf5 70.Kg4 Ra5 71.Kf4 Rf5+ 72.Kg3 Ra5 73.Kg4 Rf5 74.Ng5 Re5 75.Nh3 Rf5 76.Rc7 Rd5 77.Nf4 Re5 78.Ra7 Rb5 79.Ne6 Rh5 80.Rg7+ Kh8 81.Rxg6 Ra5 82.h5
41/62+ 01:04 123,257k 1,917k +5.27 57.Ra5+
41/62+ 01:12 138,705k 1,909k +5.40 57.Ra5+
41/66+ 01:22 157,793k 1,918k +5.60 57.Ra5+
41/66+ 01:36 185,276k 1,927k +5.86 57.Ra5+
41/66+ 01:57 226,971k 1,938k +6.21 57.Ra5+
41/66+ 02:22 274,991k 1,934k +6.67 57.Ra5+
41/66 02:25 281,311k 1,937k +6.67 57.Ra5+ Kh6 58.Ne6 Rf1+ 59.Kg4 Re1 60.Ra6 Rb1 61.Nf4 Rg1+ 62.Kf3 Kg7 63.Ne6+ Kf6 64.Ng5+ Kg7 65.Ra7+ Kf6 66.Kf4 Rf1+ 67.Nf3 Rf2 68.Kg3 Rf1 69.Kg4 Rf2 70.Ra6+ Kg7 71.Ne5 Rg2+ 72.Kh3 Rg1 73.Kh2 Re1 74.Nxg6 Re4 75.Kh3 Rb4 76.Ne5 Rf4 77.Rg6+ Kh7 78.Rg5 Rf2 79.Kg4 Ra2 80.h5 Re2 81.Kh4 Re1 82.Ng4
42/74 02:40 306,401k 1,911k +6.67 57.Ra5+ Kh6 58.Ne6 Rf1+ 59.Kg4 Re1 60.Ra6 Rb1 61.Nf4 Rg1+ 62.Kf3 Kg7 63.Ne6+ Kf6 64.Ng5+ Kg7 65.Ra7+ Kf6 66.Kf4 Rf1+ 67.Nf3 Rf2 68.Kg3 Rf1 69.Kg4 Rb1 70.Ra6+ Kg7 71.Ne5 Rg1+ 72.Kh3 Kh6 73.Rc6 Rh1+ 74.Kg3 Rg1+ 75.Kf2 Rh1 76.Rxg6+ Kh7 77.Rg4 Rb1 78.Kg3 Rg1+ 79.Kh2 Rb1 80.Rg6 Rb5 81.Rg5 Rb3 82.Kg2 Rb1 83.Kh3 Kh6 84.Ng4+ Kh7 85.Ra5 Rb3+ 86.Kg2 Rb2+ 87.Kg3 Rb1 88.Ra7+ Kg6

After 57.Ra5+ Kh6 again with clear hash stockfish see Ne2 from depth 22 without changing its mind

FEN: 8/8/6pk/R7/3N1K1P/8/8/6r1 w - - 9 58

Stockfish_19121008_x64_modern:
1/1 00:00 79 40k +3.33 58.Nf3
2/2 00:00 130 65k +57.45 58.Nf3 g5+ 59.hxg5+ Rxg5 60.Nxg5
3/6 00:00 492 246k +2.56 58.Ne6 Rf1+ 59.Kg4 Re1
4/5 00:00 669 335k +2.56 58.Ne6 Rf1+ 59.Kg4 Re1 60.Nf4 Rg1+ 61.Kf3
5/7 00:00 1k 593k +2.66 58.Ne6 Rf1+ 59.Kg4 Re1 60.Ng5
6/9 00:00 3k 896k +2.69 58.Nf3 Rh1 59.Kg4 Kg7 60.Ne5 Kf6
7/7 00:00 3k 703k +3.37 58.Nf3 Rh1 59.Kg4 Kg7 60.Kg5
8/14 00:00 10k 1,217k +2.56 58.Nf3 Rh1 59.Kg4 Rb1 60.Ra6 Rb4+ 61.Kg3 Re4 62.Rd6 Kg7 63.Kf2
9/19 00:00 15k 1,020k +2.79 58.Nf3 Rh1 59.Kg4 Rb1 60.Ra6 Rb4+ 61.Kg3
10/15 00:00 28k 1,230k +2.77 58.Nf3 Rb1 59.Ra6 Rb4+ 60.Kg3 Rb3 61.Ra4 Rb5 62.Rd4 Rb3 63.Kg4
11/19 00:00 56k 1,308k +2.69 58.Nf3 Rb1 59.Ra4 Kh5 60.Kg3 Rb7 61.Rc4 Kh6 62.Kg4 Re7 63.Rd4 Rf7
12/22 00:00 111k 1,459k +2.45 58.Nf3 Rb1 59.Ra4 Kh5 60.Re4 Rb8 61.Rc4 Rb7 62.Rc5+ Kh6 63.Rd5 Rb8 64.Nd4 Rb4
13/23 00:00 126k 1,480k +2.56 58.Nf3 Rb1 59.Ra4 Kh5 60.Re4 Rb8 61.Kg3 Rc8 62.Rb4 Ra8 63.Rd4 Rb8 64.Rd5+ Kh6 65.Kg4
14/27 00:00 148k 1,499k +2.68 58.Nf3 Rb1 59.Ra4 Kh5 60.Re4 Rb8 61.Kg3 Kh6 62.Kg4 Ra8 63.Rd4 Ra6 64.Ng1 Ra7 65.Ne2 Ra1 66.Rf4 Rb1
15/26 00:00 255k 1,536k +2.44 58.Nf3 Rb1 59.Ra4 Kh5 60.Re4 Rb8 61.Kg3 Rb3 62.Re8 Kh6 63.Kf4 Ra3 64.Re4 Kh5 65.Re5+ Kh6 66.Re8 Ra1 67.Re4 Kg7
16/25 00:00 263k 1,541k +2.59 58.Nf3 Rb1 59.Ra4 Kh5 60.Re4 Rb8 61.Kg3 Rb3 62.Re8 Kh6 63.Kf4 Ra3 64.Re3 Ra8 65.Re4 Kh5 66.Kg3 Kh6 67.Rb4 Ra1 68.Kg4 Ra8 69.Rf4
17/30 00:00 432k 1,614k +2.47 58.Ne2 Rf1+ 59.Kg4 Re1 60.Ng3 Rg1 61.Kf4 Rb1 62.Ra4 Rb3 63.Ne4 Kh5 64.Nd2 Rd3 65.Nf3 Rb3 66.Rd4 Rb8 67.Kg3
18/25 00:00 503k 1,623k +2.47 58.Ne2 Rf1+ 59.Kg3 Re1 60.Nd4 Rg1+ 61.Kf4 Rh1 62.Nf3 Rb1 63.Ra4 Kh5 64.Kg3 Rb8 65.Rf4 Ra8 66.Rf7 Kh6 67.Ng5 Ra3+ 68.Kg4 Ra4+ 69.Kh3
19/25 00:00 562k 1,630k +2.47 58.Ne2 Rf1+ 59.Kg3 Re1 60.Nd4 Rg1+ 61.Kf4 Rh1 62.Nf3 Rb1 63.Ra4 Kh5 64.Kg3 Rb8 65.Rf4 Ra8 66.Rd4 Kh6 67.Kf4 Rf8+ 68.Kg4 Ra8 69.Re4 Ra6 70.Kf4 Rf6+ 71.Kg4
20/28 00:00 705k 1,667k +2.44 58.Nf3 Rb1 59.Ra4 Kh5 60.Kg3 Rb8 61.Rf4 Ra8 62.Rd4 Kh6 63.Kg4 Ra3 64.Rc4 Ra5 65.Re4 Ra6 66.Kf4 Kh5 67.Kg3 Ra8 68.Re6
21/29 00:00 861k 1,691k +2.36 58.Nf3 Rb1 59.Ra4 Kh5 60.Kg3 Rb8 61.Ra6 Rb3 62.Ra8 Kh6 63.Ra5 Rb8 64.Nd4 Rb1 65.Ne2 Rb3+ 66.Kg4 Rb1 67.Ra6 Kg7 68.Ra4 Kh6 69.Nf4 Rg1+ 70.Kf3
22/38 00:00 1,270k 1,745k +2.77 58.Ne2 Rf1+ 59.Kg4 Rb1 60.Ra4 Kg7 61.Nf4 Rg1+ 62.Kf3 Kf6 63.Ra6+ Kg7 64.Ne6+ Kf6 65.Ng5+ Kf5 66.Ra5+ Kf6 67.Ne4+ Kg7 68.Ra7+ Kf8 69.Kf4 Rf1+ 70.Kg5
23/49 00:01 1,992k 1,780k +2.90 58.Ne2 Rg2 59.Re5 Rf2+ 60.Kg4 Rg2+ 61.Kh3 Rf2 62.Re6 Kg7 63.Kg3 Rf1 64.Ra6 Kf7 65.Kg4 Rd1 66.Kf4 Rf1+ 67.Kg3 Re1 68.Nd4 Rg1+ 69.Kf4 Kg7 70.Ne6+ Kh6
24/47 00:01 2,651k 1,800k +3.17 58.Ne2 Rg2 59.Re5 Rf2+ 60.Kg4 Rg2+ 61.Kh3 Rf2 62.Re6 Kg7 63.Kg3 Rf1 64.Ra6 Rh1 65.Nf4 Rg1+ 66.Kh2 Rg4 67.Ne6+ Kh6 68.Kh3 Rc4 69.Kg3 Rc1 70.Ra8 Kh7 71.Kg4 Rg1+ 72.Kf3 Rh1 73.Ra4 Kh6 74.Kg2 Rc1 75.Nf4 Rc6 76.Ra5
25/42 00:01 3,328k 1,816k +3.13 58.Ne2 Rg2 59.Re5 Rh2 60.Kg4 Rg2+ 61.Kh3 Rf2 62.Re6 Kg7 63.Kg3 Rf1 64.Ra6 Kf7 65.Nd4 Rb1 66.Ne6 Kf6 67.Nf4+ Kf5 68.Ra5+ Kf6 69.Nd5+ Kg7 70.Ne3 Rb3 71.Kf4 Rb4+ 72.Kg5 Rb7
26/43 00:02 3,735k 1,832k +3.17 58.Ne2 Rg2 59.Re5 Rh2 60.Kg4 Rg2+ 61.Kh3 Rf2 62.Re6 Kg7 63.Kg3 Rf1 64.Ra6 Kh7 65.Ra4 Rb1 66.Kg4 Kh6 67.Ra5 Re1 68.Ra2 Rb1 69.Ra4 Kg7 70.Nf4 Rg1+ 71.Kf3 Kf7 72.Ra7+ Kf6 73.Ra6+ Kf7 74.Ne6 Kf6 75.Ng5+ Kf5 76.Ra5+ Kf6 77.Ne4+ Kf7 78.Ra7+ Kf8 79.Ng5
27/51 00:02 4,319k 1,846k +3.17 58.Ne2 Rg2 59.Re5 Rh2 60.Kg4 Rg2+ 61.Kh3 Rf2 62.Re6 Kg7 63.Kg3 Rf1 64.Ra6 Kh7 65.Ra4 Kh6 66.Kg4 Rb1 67.Ra5 Re1 68.Ra2 Rb1 69.Ra4 Kg7 70.Nf4 Rg1+ 71.Kf3 Rb1 72.Ra6 Rf1+ 73.Kg3 Rg1+ 74.Kh2 Rg4 75.Ne6+ Kh6 76.Kh3 Rc4 77.Kg3 Rc3+ 78.Kg4 Rc4+ 79.Nf4
28/50 00:03 5,815k 1,855k +3.17 58.Ne2 Rg2 59.Re5 Rh2 60.Kg4 Rg2+ 61.Kh3 Rf2 62.Re6 Kg7 63.Kg3 Rf1 64.Ra6 Kh7 65.Ra4 Kh6 66.Kg4 Rb1 67.Ra5 Re1 68.Ra2 Rb1 69.Ra4 Re1 70.Nf4 Rf1 71.Ne6 Rc1 72.Ra8 Kh7 73.Kf3 Rh1 74.Ra4 Kh6 75.Kg3 Rg1+ 76.Kh2 Rb1 77.Nf4 Rb6
29/44 00:03 6,708k 1,865k +3.17 58.Ne2 Rg2 59.Re5 Rh2 60.Kg4 Rg2+ 61.Kh3 Rf2 62.Re6 Kg7 63.Kg3 Rf1 64.Ra6 Kh7 65.Ra4 Kh6 66.Kg4 Rb1 67.Ra5 Re1 68.Ra2 Rb1 69.Ra4 Re1 70.Nf4 Rf1 71.Ne6 Rc1 72.Ra8 Rc4+ 73.Nf4 Rc6 74.Ra5 Rb6 75.Ra4 Kg7
30/47+ 00:04 8,134k 1,878k +3.30 58.Ne2
30/47 00:04 8,825k 1,885k +3.30 58.Ne2 Rg2 59.Ra2 Kh7 60.Kf3 Rh2 61.Kg3 Rh1 62.Ra4 Rb1 63.Nf4 Rg1+ 64.Kh2 Rg4 65.Kh3 Rg1 66.Ra7+ Kh6 67.Ra6 Rh1+ 68.Kg4 Rg1+ 69.Kf3 Kh7 70.Ne6 Rc1 71.Kg2 Rc4 72.Kg3 Rc1 73.Ng5+ Kg7 74.Ra7+ Kf6 75.Rf7+ Ke5 76.Nf3+ Ke6 77.Rf4 Ra1 78.Kg4 Ra5
31/54 00:05 11,138k 1,905k +3.41 58.Ne2 Rg2 59.Ra2 Kh7 60.Kf3 Rh2 61.Kg3 Rh1 62.Ra4 Rb1 63.Nf4 Rg1+ 64.Kh2 Rg4 65.Kh3 Rg1 66.Ra7+ Kh6 67.Ra6 Rh1+ 68.Kg4 Rg1+ 69.Kf3 Kg7 70.Ne6+ Kf6 71.Ng5+ Kf5 72.Ra5+ Kf6 73.Ne4+ Kf7 74.Ra7+ Ke6 75.Ra6+ Kf7 76.Ng5+ Kg7 77.Ra7+ Kf6 78.Kf4 Rf1+ 79.Nf3 Rf2 80.Ra6+ Kg7 81.Kg3 Re2 82.Ng5 Re3+ 83.Kf4 Rd3 84.Nf3
32/59+ 00:06 11,895k 1,912k +3.53 58.Ne2
32/59 00:06 12,100k 1,913k +3.53 58.Ne2 Rg2 59.Ra2 Kh7 60.Kf3 Rh2 61.Kg3 Rh1 62.Ra4 Rb1 63.Nf4 Rg1+ 64.Kh2 Rg4 65.Kh3 Rg1 66.Ra7+ Kh6 67.Ra6 Rh1+ 68.Kg4 Rg1+ 69.Kf3 Kg7 70.Ne6+ Kf6 71.Ng5+ Kf5 72.Ra5+ Kf6 73.Kf4 Rf1+ 74.Nf3 Kg7 75.Kg3 Rb1 76.Ne5 Rg1+ 77.Kh2 Rb1 78.Kg2 Rb4 79.Kg3 Kf6 80.Ng4+ Kg7 81.Ra7+ Kf8
33/65+ 00:08 15,575k 1,906k +3.66 58.Ne2
33/65+ 00:08 17,026k 1,912k +3.78 58.Ne2
33/65+ 00:09 18,680k 1,913k +3.95 58.Ne2
33/65 00:10 20,139k 1,890k +3.97 58.Ne2 Rg2 59.Ra2 Rh2 60.Kg3 Rh1 61.Ra6 Kg7 62.Kg4 Re1 63.Ra7+ Kh6 64.Ra2 Rd1 65.Ra6 Kg7 66.Ra7+ Kh6 67.Rc7 Rd2 68.Nf4 Rd1 69.Rc6 Rg1+ 70.Kf3 Kg7 71.Ne2 Rh1 72.Kg4 Re1 73.Rc7+ Kg8 74.Rc2 Kf8 75.Kg5 Kf7 76.Rb2 Kg7 77.Ra2 Rb1 78.Ra7+ Kf8 79.Kxg6 Rb6+ 80.Kg5
34/48+ 00:11 22,225k 1,858k +4.10 58.Ne2
34/48+ 00:13 24,178k 1,845k +4.23 58.Ne2
34/48+ 00:14 26,096k 1,826k +4.40 58.Ne2
34/48 00:15 28,356k 1,834k +4.10 58.Ne2 Rf1+ 59.Kg4 Rf2 60.Nf4 Rf1 61.Ra6 Rg1+ 62.Kf3 Kh7 63.Ne6 Rc1 64.Kg2 Rc4 65.Kg3 Rc1 66.Ng5+ Kg7 67.Ra7+ Kf6 68.Rf7+ Ke5 69.Nf3+ Ke6 70.Rf4 Ke7 71.Ne5 Kd6 72.Ng4 Ke7 73.Ra4 Kf7 74.Ra7+ Kg8 75.Ne5 Rh1 76.Ra6 Kh7 77.Nf3
35/50+ 00:16 29,396k 1,835k +4.23 58.Ne2
35/51+ 00:16 30,159k 1,840k +4.35 58.Ne2
35/51+ 00:17 31,516k 1,846k +4.53 58.Ne2
35/52+ 00:19 35,363k 1,819k +4.77 58.Ne2
35/52 00:19 36,140k 1,822k +4.77 58.Ne2 Rf1+ 59.Kg4 Rb1 60.Ra6 Kh7 61.Rc6 Re1 62.Rc7+ Kh6 63.Rc2 Ra1 64.Rc1 Ra6 65.Nf4 Kg7 66.Re1 Ra4 67.Re6 Kh7 68.Rd6 Re4 69.Kf3 Rb4 70.Nxg6 Kg7 71.Rc6 Kh7 72.Nf4 Rb1 73.Ra6 Rg1 74.h5 Rf1+ 75.Ke4 Rf2 76.Re6 Rf1
36/56 00:21 40,175k 1,838k +4.77 58.Ne2 Rf1+ 59.Kg4 Rf2 60.Nf4 Rf1 61.Ra6 Rg1+ 62.Kf3 Kg7 63.Ne6+ Kf6 64.Ng5+ Kf5 65.Ra5+ Kf6 66.Ne4+ Kf7 67.Ra7+ Ke6 68.Ra6+ Kf7 69.Ng5+ Kg7 70.Ra7+ Kf6 71.Kf4 Rf1+ 72.Nf3 Rf2 73.Ra6+ Kg7 74.Kg3 Re2 75.Ng5 Re1 76.Ra7+ Kh8 77.Nh7 Rf1 78.Kg4 Rf5 79.Ng5 Rf1 80.Nf3 Kg8 81.Ne5 Rg1+ 82.Kf4 Kf8 83.Ng4 Rh1 84.Kg5 Rg1 85.Ra8+ Ke7
37/41+ 00:23 43,225k 1,835k +4.91 58.Ne2
37/60 00:24 44,495k 1,841k +4.91 58.Ne2 Rf1+ 59.Kg4 Rf2 60.Nf4 Rf1 61.Ra6 Rg1+ 62.Kf3 Kh7 63.Ne2 Rh1 64.Kg4 Re1 65.Ra7+ Kh6 66.Ra2 Rd1 67.Ra6 Kg7 68.Ra7+ Kh6 69.Rc7 Rd2 70.Nf4 Rd1 71.Rc6 Rg1+ 72.Kf3 Rf1+ 73.Ke3 Re1+ 74.Kf2 Ra1 75.Rxg6+ Kh7 76.Rd6 Ra3 77.Re6 Kg7 78.h5 Ra5 79.Kg3 Kh7 80.Rc6 Ra4 81.Rf6 Ra1 82.Rg6 Ra3+ 83.Kg4 Ra4 84.Re6
38/60+ 00:26 49,200k 1,854k +5.04 58.Ne2
38/60 00:27 51,398k 1,861k +5.04 58.Ne2 Rf1+ 59.Kg4 Rf2 60.Nf4 Rf1 61.Ra6 Rg1+ 62.Kf3 Kh7 63.Ne2 Rh1 64.Kg4 Re1 65.Re6 Rb1 66.Rc6 Re1 67.Rc7+ Kh6 68.Rc2 Ra1 69.Rc1 Ra3 70.Rc6 Ra4+ 71.Nf4 Kh7 72.Rd6 Re4 73.Ra6 Rc4 74.Re6 Rb4 75.Re1 Kh6 76.Ra1 Rb6 77.Rd1 Rb2 78.Rd6 Rb1 79.Rxg6+ Kh7 80.Ra6 Rb5 81.Ne6 Rb1 82.Kh5
39/49 00:29 54,752k 1,865k +5.04 58.Ne2 Rf1+ 59.Kg4 Rf2 60.Nf4 Rf1 61.Ra6 Rg1+ 62.Kf3 Kh7 63.Ne2 Rh1 64.Kg4 Re1 65.Re6 Rb1 66.Rc6 Re1 67.Rc7+ Kh6 68.Rc2 Ra1 69.Rc1 Ra3 70.Rc6 Ra4+ 71.Nf4 Kh7 72.Rd6 Re4 73.Ra6 Rc4 74.Re6 Rb4 75.Re1 Kh6 76.Ra1 Rb6 77.Ra5 Rc6 78.Ra2 Kh7 79.Ra1 Kg7 80.Re1 Rc4 81.Re6 Kh7 82.Ra6
40/58 00:31 58,585k 1,871k +5.04 58.Ne2 Rf1+ 59.Kg4 Rf2 60.Nf4 Rf1 61.Ra6 Rg1+ 62.Kf3 Kh7 63.Ne2 Rh1 64.Kg4 Re1 65.Re6 Rb1 66.Rc6 Re1 67.Rc7+ Kh6 68.Rc2 Ra1 69.Rc1 Ra3 70.Rc6 Ra4+ 71.Nf4 Kh7 72.Rd6 Re4 73.Rd1 Re7 74.Rc1 Ra7 75.Re1 Rb7 76.Re6 Rb4 77.Ra6 Rc4 78.Ra7+ Kh6 79.Ra5 Rc3 80.Ra6 Kh7 81.Nxg6 Rc4+ 82.Kf5
41/49 00:32 61,704k 1,878k +5.04 58.Ne2 Rf1+ 59.Kg4 Rf2 60.Nf4 Rf1 61.Ra6 Rg1+ 62.Kf3 Kh7 63.Ne2 Rh1 64.Kg4 Re1 65.Re6 Rb1 66.Rc6 Re1 67.Rc7+ Kh6 68.Rc2 Ra1 69.Rc1 Ra3 70.Rc6 Ra4+ 71.Nf4 Kh7 72.Rd6 Re4 73.Ra6 Rc4 74.Ra7+ Kh6 75.Ra1 Rb4 76.Ra6 Kh7 77.Re6 Ra4 78.Rc6 Rb4 79.Rc1 Kh6 80.Kf3 Kh7 81.Kg3 Kg8 82.Kg4
42/57 00:38 70,513k 1,809k +5.05 58.Ne2 Rf1+ 59.Kg4 Rf2 60.Nf4 Rf1 61.Ra6 Rg1+ 62.Kf3 Kh7 63.Ne2 Rh1 64.Kg4 Re1 65.Re6 Rb1 66.Rc6 Re1 67.Rc7+ Kh6 68.Rc2 Ra1 69.Rc1 Ra3 70.Rc6 Ra4+ 71.Nf4 Kh7 72.Rd6 Re4 73.Rd7+ Kh6 74.Rd1 Kg7 75.Kf3 Ra4 76.Rd6 Ra1 77.Nxg6 Kh6 78.Nf4+ Kg7 79.Rc6 Rg1 80.Ra6 Rh1 81.Kg4 Rg1+ 82.Kh5 Rh1 83.Nd5 Kf7 84.Kg4 Rg1+ 85.Kf5 Rf1+ 86.Kg5
43/61 00:41 75,526k 1,822k +5.05 58.Ne2 Rf1+ 59.Kg4 Rf2 60.Nf4 Rf1 61.Ra6 Rg1+ 62.Kf3 Kh7 63.Ne2 Rh1 64.Kg4 Re1 65.Re6 Rb1 66.Rc6 Re1 67.Rc7+ Kh6 68.Rc2 Ra1 69.Rc1 Ra3 70.Rc6 Ra4+ 71.Nf4 Kh7 72.Rd6 Re4 73.Rd7+ Kh6 74.Kf3 Re1 75.Rd6 Rf1+ 76.Ke3 Re1+ 77.Kf2 Rh1 78.Rxg6+ Kh7 79.Rg4 Ra1 80.Rg5 Ra3 81.Rg6 Ra4 82.Rf6 Kg7 83.Nh5+ Kg8 84.Kg3 Ra1 85.Nf4 Rg1+ 86.Kf3 Rh1 87.Rg6+ Kf7 88.Kg4
44/60 00:44 82,164k 1,837k +5.05 58.Ne2 Rf1+ 59.Kg4 Rf2 60.Nf4 Rf1 61.Ra6 Rg1+ 62.Kf3 Kh7 63.Ne2 Rh1 64.Kg4 Re1 65.Re6 Rb1 66.Rc6 Re1 67.Rc7+ Kh6 68.Rc2 Ra1 69.Rc1 Ra3 70.Rc6 Ra4+ 71.Nf4 Kh7 72.Rd6 Re4 73.Rd7+ Kh6 74.Kf3 Re1 75.Rd6 Rf1+ 76.Ke3 Re1+ 77.Kf2 Rh1 78.Rxg6+ Kh7 79.Rg4 Ra1 80.Rg5 Ra3 81.Rg6 Ra4 82.Rf6 Kg7 83.Nh5+ Kg8 84.Kg3 Ra1 85.Kg4 Rg1+ 86.Kf3 Kh7 87.Nf4 Ra1
45/60 00:46 86,811k 1,848k +5.05 58.Ne2 Rf1+ 59.Kg4 Rf2 60.Nf4 Rf1 61.Ra6 Rg1+ 62.Kf3 Kh7 63.Ne2 Rh1 64.Kg4 Re1 65.Re6 Rb1 66.Rc6 Re1 67.Rc7+ Kh6 68.Rc2 Ra1 69.Rc1 Ra3 70.Rc6 Ra4+ 71.Nf4 Kh7 72.Rd6 Re4 73.Rd7+ Kh6 74.Rd1 Kg7 75.Kf3 Ra4 76.Rd6 Ra1 77.Nxg6 Kh6 78.Nf4+ Kg7 79.Rc6 Rh1 80.Rg6+ Kh7 81.Kg4 Rg1+ 82.Kh5 Rh1 83.Ra6 Kg7 84.Ne6+ Kf6 85.Ng5+ Kf5 86.Ra5+ Kf4 87.Ne6+ Kf3
46/67+ 00:54 101,272k 1,863k +5.18 58.Ne2
46/67 01:01 114,753k 1,858k +5.18 58.Ne2 Rf1+ 59.Kg4 Rf2 60.Nf4 Rf1 61.Ra6 Rg1+ 62.Kf3 Kg7 63.Ne6+ Kf6 64.Ng5+ Kg7 65.Ra7+ Kf6 66.Ne4+ Kf5 67.Ra5+ Ke6 68.Ra6+ Kf7 69.Ng3 Rb1 70.Ra7+ Ke6 71.Ne2 Kf6 72.Kg4 Re1 73.Ng3 Rg1 74.Kf4 Ke6 75.Ne2 Re1 76.Kf3 Rd1 77.Kg4 Kf6 78.Rc7 Re1 79.Rc2 Rf1 80.Rc1 Rf5 81.Nf4 Rb5 82.Rc6+ Kg7 83.Rd6 Rb1 84.Rxg6+ Kh7 85.h5 Rg1+ 86.Kf5 Rh1 87.Ra6 Rf1
47/65 01:08 128,766k 1,879k +5.18 58.Ne2 Rf1+ 59.Kg4 Rf2 60.Nf4 Rf1 61.Ra6 Rg1+ 62.Kf3 Kg7 63.Ne6+ Kf6 64.Ng5+ Kg7 65.Ra7+ Kf6 66.Ne4+ Kf5 67.Ra5+ Ke6 68.Ra6+ Kf7 69.Ng3 Rb1 70.Ra7+ Ke6 71.Ne2 Kf6 72.Kg4 Re1 73.Ng3 Rg1 74.Kf4 Ke6 75.Ne2 Re1 76.Kf3 Rd1 77.Kg4 Kf6 78.Rc7 Re1 79.Rc2 Rb1 80.Rc6+ Kf7 81.Rc1 Rb4+ 82.Nf4 Kg7 83.Ra1 Kh7 84.Ra7+ Kh6 85.Ra6 Kh7 86.Ra1 Rb6 87.Rd1 Kh6 88.Re1 Rb4
48/70+ 01:25 163,451k 1,920k +5.32 58.Ne2
48/70+ 01:31 177,218k 1,935k +5.46 58.Ne2
48/70+ 01:38 191,827k 1,949k +5.65 58.Ne2

After Ne2 black has 2 equal options Re1 and Rg2

After 58.Ne2 Re1 stockfish with clear hash can see 59.Kf3 that is the right move
After 58.Ne2 Rg2 stockfish from clear hash can see 59.Re5 that is again the right move

Maybe it is only luck but it may be interesting to know if stockfish single core with clear hash that is deterministic can perform better on tablebases positions relative to default stockfish with many cores that does not clear hash tables between moves.

[Marek Soszynski]

Stockfish naysayers should take a look at Weakfish, which is basically SF eval without the search bells and whistles, if I understand it correctly- the author M. Byrne could explain it better I'm sure.

I'm still waiting for Bizarrefish, which was Weakfish without Stockfish's eval, I think.

And then there's the insane Xonafish.

[Ovyron]

Yeah, I'm waiting for some engine that just plays some crazy chess, like, exchanging queen for a pawn for no seemingly reason, yet plays at 3000 elo level. Thinker and OpenTal come very close, but they still sacrifice for an attack or some compensation, the level of insanity would just be sacrificing for fun.