Endgame test position

[Nordlandia]

On 4790K 4.5GHz 3-cores used with 5-men syzygy. White is able to win. Idk if stronger hardware can save black.

Classical SF managed to defeat NNUE.

[d]5nk1/pb6/3bp3/2pn3N/P7/8/5PPP/2R1R1K1 w - - 0 1

[peter]

Classical SF managed to defeat NNUE.

And vice versa.
CF 161020 set to Use NNUE Hybrid, 181020 Classical
Both 12 threads of 12x3GHz Xeon X5670(SSE4.1) and 8G hash each.
[pgn]
[Event "SCHWARZERBLITZ, Schnellschach 45m+5s"]
[Site "SchwarzerBlitz"]
[Date "2020.10.19"]
[Round "1"]
[White "CF EXT 181020 x64 SSE41 N"]
[Black "Cfish 161020 64 POPCNT NUMA"]
[Result "1-0"]
[Annotator "0.69;0.55"]
[SetUp "1"]
[FEN "5nk1/pb6/3bp3/2pn3N/P7/8/5PPP/2R1R1K1 w - - 0 1"]
[PlyCount "61"]
[TimeControl "2700+5"]

{Intel(R) Xeon(R) CPU X5670 @ 2.93GHz 2933 MHz W=34.4 plies; 9.
320kN/s; 63.932.045 TBAs B=32.8 plies; 5.666kN/s; 46.057.346 TBAs 0.51;0.68:
'Intel(R) Xeon(R) CPU X5670 @ 2.93GHz 2933 MHz W=37.9 plies; 6.
950kN/s; 53.510.823 TBAs B=39.4 plies; 11.096kN/s; 128.448.120 TBAs '} 1. Ng3
{Beide letzter Buchzug} Nf6 {[%eval 55,38] [%emt 0:00:50]} 2. Nf1 {[%eval 69,
42] [%emt 0:02:56] (Ted1)} (2. Red1 {[%eval 51,38] [%emt 0:01:08] (Sf1)} Be7 {
[%eval 71,35] [%emt 0:01:03]} 3. Rb1 {[%eval 50,41] [%emt 0:00:00]} Ba6 {
[%eval 60,33] [%emt 0:00:22] (Lc6)} 4. h4 {[%eval 52,36] [%emt 0:00:46]} Kf7 {
[%eval 100,42] [%emt 0:02:10]} 5. h5 {[%eval 77,40] [%emt 0:00:11]} c4 {[%eval
96,40] [%emt 0:00:45]} 6. Rbc1 {[%eval 60,40] [%emt 0:00:23]} Bc5 {[%eval 94,
40] [%emt 0:01:50]} 7. Rc2 {[%eval 80,43] [%emt 0:00:00]} Kg7 {[%eval 115,39]
[%emt 0:00:34]} 8. Nf1 {[%eval 80,42] [%emt 0:00:08]} Ng4 {[%eval 123,39]
[%emt 0:00:50]} 9. Nh2 {[%eval 79,45] [%emt 0:02:03]} Ne5 {[%eval 115,42]
[%emt 0:00:03]} 10. Re1 {[%eval 87,40] [%emt 0:00:26]} Bd6 {[%eval 133,42]
[%emt 0:00:47]} 11. Nf1 {[%eval 75,40] [%emt 0:00:25]} Kh6 {[%eval 144,43]
[%emt 0:01:12]} 12. Rce2 {[%eval 80,43] [%emt 0:00:00]} Nf7 {[%eval 155,45]
[%emt 0:00:58]} 13. Ng3 {[%eval 70,43] [%emt 0:00:00]} Bb7 {[%eval 159,43]
[%emt 0:01:11]} 14. Ne4 {[%eval 76,43] [%emt 0:00:00]} Bb4 {[%eval 180,42]
[%emt 0:00:48]} 15. Rc1 {[%eval 107,39] [%emt 0:00:09]} Bd5 {[%eval 194,44]
[%emt 0:00:49]} 16. Nf6 {[%eval 114,39] [%emt 0:00:56]} Nd6 {[%eval 202,43]
[%emt 0:00:00] (a5)} 17. Re5 {[%eval 160,36] [%emt 0:00:48]} Bc6 {[%eval 206,
42] [%emt 0:00:09] (Ld2)} 18. Ng8+ {[%eval 152,36] [%emt 0:00:54] (a5)} Kh7 {
[%eval 178,34] [%emt 0:00:35]} 19. Rg5 {[%eval 165,35] [%emt 0:00:14] (Sf6+)}
Ba3 {[%eval 279,46] [%emt 0:07:49] (Sd7)} 20. Rc2 {[%eval 269,36] [%emt 0:00:
43] (Tc3)} Nd7 {[%eval 359,39] [%emt 0:01:22]} 21. h6 {[%eval 318,39] [%emt 0:
00:21]} Kh8 {[%eval 432,38] [%emt 0:01:43]} 22. Rg7 {[%eval 367,38] [%emt 0:00:
00]} Nf5 {[%eval 454,39] [%emt 0:01:35]} 23. Rxc4 {[%eval 421,38] [%emt 0:00:
20]} Nxg7 {[%eval 459,39] [%emt 0:00:07] (Se5)} 24. hxg7+ {[%eval 465,35]
[%emt 0:00:55]} Kxg8 {[%eval 480,42] [%emt 0:00:00]} 25. Rxc6 {[%eval 488,36]
[%emt 0:00:43]} Ne5 {[%eval 644,40] [%emt 0:05:21] (Sf6)} 26. Rxe6 {[%eval 613,
34] [%emt 0:02:14]} Nf7 {[%eval 719,39] [%emt 0:01:33]} 27. Ra6 {[%eval 677,34]
[%emt 0:00:00] (Tg6)} Bc5 {[%eval 643,32] [%emt 0:00:30]} 28. Kf1 {[%eval 726,
33] [%emt 0:00:57] (Tg6)} Kxg7 {[%eval 817,36] [%emt 0:02:31] (Sd6)} 29. f4 {
[%eval 832,32] [%emt 0:00:48] (Ke2)} Nd8 {[%eval 1003,34] [%emt 0:03:40] (Sh8)}
30. g4 {[%eval 1067,31] [%emt 0:00:50] (Ke2)} Kf8 {[%eval 1273,32] [%emt 0:02:
52] (Sb7)} 31. g5 {[%eval 1271,31] [%emt 0:01:13] 1-0 (31) Cfish 161020 64
POPCNT NUMA-CF EXT 181020 x64 SSE41 N SchwarzerBlitz 2020 [0.51;0.68]}) 2...
Kf7 {[%eval 36,30] [%emt 0:00:28]} 3. Ne3 {[%eval 68,42] [%emt 0:00:00]} N8d7 {
[%eval 38,33] [%emt 0:00:36]} 4. Nc4 {[%eval 51,42] [%emt 0:03:35] (h4)} Bc7 {
[%eval 32,37] [%emt 0:00:28]} 5. a5 {[%eval 80,39] [%emt 0:01:42] (h4)} e5 {
[%eval 33,32] [%emt 0:00:32] (Ke7)} 6. h3 {[%eval 71,39] [%emt 0:03:45] (h4)}
e4 {[%eval 37,34] [%emt 0:00:42]} 7. g4 {[%eval 92,35] [%emt 0:00:10]} Kg6 {
[%eval 38,36] [%emt 0:01:50]} 8. Red1 {[%eval 126,38] [%emt 0:00:44]} Bf4 {
[%eval 56,41] [%emt 0:01:42]} 9. Ne3 {[%eval 116,45] [%emt 0:00:00] (Tc3)} Kg5
{[%eval 44,34] [%emt 0:00:42]} 10. Rd2 {[%eval 133,47] [%emt 0:00:34]} Bc6 {
[%eval 71,38] [%emt 0:00:41] (Le5)} 11. Rdc2 {[%eval 162,35] [%emt 0:00:25]}
Kg6 {[%eval 53,36] [%emt 0:00:13]} 12. h4 {[%eval 159,31] [%emt 0:00:17] (Txc5)
} a6 {[%eval 69,37] [%emt 0:00:35] (Lb5)} 13. g5 {[%eval 169,31] [%emt 0:00:26]
(Txc5)} Ne8 {[%eval 75,32] [%emt 0:00:49]} 14. Rd2 {[%eval 234,33] [%emt 0:00:
02]} Kf7 {[%eval 148,40] [%emt 0:07:28] (Kh5)} 15. Rb1 {[%eval 275,33] [%emt 0:
01:18] (Txd7+)} Ke6 {[%eval 216,34] [%emt 0:05:37]} 16. Kg2 {[%eval 353,38]
[%emt 0:01:20] (g6)} Ng7 {[%eval 132,28] [%emt 0:00:35] (Ld6)} 17. Kh3 {[%eval
363,33] [%emt 0:01:00]} Bc7 {[%eval 157,33] [%emt 0:02:28]} 18. Rdb2 {[%eval
398,36] [%emt 0:00:00]} Nh5 {[%eval 260,34] [%emt 0:05:30]} 19. Rb7 {[%eval
466,37] [%emt 0:02:00] (Kg4)} Bxa5 {[%eval 245,31] [%emt 0:01:05]} 20. Ra7 {
[%eval 486,33] [%emt 0:00:00]} Bb4 {[%eval 252,29] [%emt 0:00:32] (Se5)} 21.
Rxa6 {[%eval 497,31] [%emt 0:00:36] (Kg4)} Ne5 {[%eval 355,29] [%emt 0:01:03]}
22. Nc4 {[%eval 513,31] [%emt 0:00:05] (Txc6+)} Nf4+ {[%eval 308,30] [%emt 0:
01:06] (Sxc4)} 23. Kg3 {[%eval 550,30] [%emt 0:01:05]} Ne2+ {[%eval 326,32]
[%emt 0:00:16] (Sh5+)} 24. Kh2 {[%eval 582,30] [%emt 0:00:47]} Bc3 {[%eval 356,
31] [%emt 0:00:00] (Sf3+)} 25. Rd1 {[%eval 586,30] [%emt 0:00:46] (Se3)} Nd3 {
[%eval 424,28] [%emt 0:00:55] (Sd4)} 26. g6 {[%eval 647,31] [%emt 0:01:29] (h5)
} Nd4 {[%eval 478,30] [%emt 0:00:37] (Kd5)} 27. h5 {[%eval 712,28] [%emt 0:00:
37]} Kf6 {[%eval 498,30] [%emt 0:00:05] (Sf5)} 28. Nd6 {[%eval 793,27] [%emt 0:
00:31] (Se3)} Ke7 {[%eval 787,33] [%emt 0:03:46]} 29. g7 {[%eval 1101,31]
[%emt 0:00:29]} Nf3+ {[%eval 767,27] [%emt 0:00:07]} 30. Kg2 {[%eval 1109,26]
[%emt 0:00:23]} Bxg7 {[%eval 834,27] [%emt 0:00:24] (Ld5)} 31. Rxc6 {[%eval
1162,27] [%emt 0:00:48]} 1-0


[/pgn]

[mmt]

SF analysis:
77/103 +2.90 1.Re4 Kf7 2.Rg4 Ng6 3.Rgc4 Ke7 4.Rxc5 Bxc5 5.Rxc5 Kd6 6.Rb5 Bc6 7.Ra5 Nc3 8.Ng3 Nxa4 9.Ne4+ Bxe4 10.Rxa4 Ke5 11.Rxa7 Kf6 12.f3 Bd3 13.Rd7 Bf5 14.Rd6 Kf7 15.Kf2 e5 16.g4 Bb1 17.Rd7+ Kf6 18.Rd1 Bc2 19.Rd2 Bb3 20.Rd6+ Be6 21.Kg3 Nf4 22.h4 Ke7 23.Ra6 Ne2+ 24.Kg2 Nf4+ 25.Kh2 Kf6 26.Kg3 Ne2+ 27.Kg2 Nf4+ 28.Kh2 Ng6 29.Kg3 Nf4 30.h5 Kg5 31.Ra7 Kh6 32.Re7 Kg5 33.Re8 Ne2+ 34.Kf2 Nf4 35.Rf8 Kh6 36.Ke3 Kg7 37.Ra8 Bd5 38.Ra5 Kh6 39.Ra7 Ng2+ 40.Kf2 Nf4 41.Ra6+ Kh7 42.Kg3 Ne2+ 43.Kg2 Nf4+ 44.Kf2 Be6 45.Ra7+ Kh6 46.Kg3 Bd5 47.Ra6+ Kh7 48.Ra5 Kh6

[Nordlandia]

What about ...Bxc5 instead of pawn capture. Pawn capture can probably be a mistake. Bishop capture looks more natural as it maintain the pawn structure. In addition to preventing the b-file for the white rooks.

[d]5nk1/pb6/1p2p3/2bn3N/P7/8/5PPP/2R1R1K1 w - - 0 35

[Nordlandia]

All hope is not over.

[pgn][Event "?"]
[Site "i7-5960X 4.5GHz / 2x 2080 Super OC"]
[Date "2020.10.22"]
[Round "?"]
[White "komodo-14-64bit-bmi2"]
[Black "stockfish_20101813_x64_bmi2"]
[Result "1/2-1/2"]
[BlackTimeControl "2700+30"]
[FEN "5nk1/pb6/1p2p3/2bn3N/P3R3/8/5PPP/2R3K1 b - - 1 35"]
[GameDuration "00:58:45"]
[GameEndTime "2020-10-22T13:23:37.251 Vest-Europa (sommertid)"]
[GameStartTime "2020-10-22T12:24:52.212 Vest-Europa (sommertid)"]
[PlyCount "43"]
[SetUp "1"]
[Termination "adjudication"]
[WhiteTimeControl "1800+30"]

1... Kf7 {-0.97/41 152.6s} 2. Rg4 {+0.96/40 66.93s} Ng6 {-1.03/43 79.41s}
3. Rxc5 {+1.14/39 56.27s} bxc5 {-1.17/48 247.1s} 4. Rc4 {+0.97/39 56.45s}
Ke7 {-1.29/51 209.0s} 5. Rxc5 {+1.30/38 79.72s} Kd6 {-1.59/43 120.4s}
6. Rb5 {+1.28/39 72.44s} Bc6 {-1.21/43 66.77s} 7. Ra5 {+1.72/37 70.98s}
Nc3 {-1.28/54 61.52s} 8. f3 {+1.70/41 125.5s} Bxa4 {-1.36/52 133.9s}
9. Rxa7 {+1.57/36 56.97s} e5 {-1.37/53 59.83s} 10. Ng3 {+1.93/34 56.88s}
Bc2 {-1.37/54 61.20s} 11. Nf1 {+1.87/36 50.25s} Nf4 {-0.23/42 68.33s}
12. Ne3 {+2.01/37 53.00s} Bd3 {-0.13/43 58.74s} 13. g3 {+2.56/37 60.20s}
Nfd5 {0.00/45 65.76s} 14. Kf2 {+2.77/38 59.52s} e4 {0.00/54 59.41s}
15. Nxd5 {+2.80/42 51.65s} Nxd5 {0.00/96 76.21s} 16. fxe4 {+2.83/43 52.48s}
Bxe4 {0.00/143 75.05s} 17. g4 {+2.86/43 52.32s} Ke5 {0.00/73 172.9s}
18. Kg3 {+2.89/43 51.71s} Nf4 {0.00/75 86.04s} 19. Ra2 {+2.85/41 49.80s}
Ne6 {0.00/72 57.92s} 20. h4 {+2.90/44 57.56s} Kf6 {0.00/71 54.94s}
21. h5 {+2.94/43 50.66s} Bd3 {0.00/72 62.43s} 22. Rd2 {+2.84/44 156.1s}
Be4 {0.00/74 95.65s, Draw by adjudication: user decision} 1/2-1/2
[/pgn]