Difficult endgames

[BeyondCritics]

Finally i looked up the stem game Goldin-Korzubov (Dushanbe 1980), see https://www.chess.com/forum/view/game-a ... s-position. Black settled for an early f4 and finally reached this position:
[d]8/8/6p1/3p4/kppN1p2/2P2P1P/1PR3PK/q7 w - - 0 36
White in zugzwang tried the cunning 36.g3 and black answered with 36...g5.
Retrospective i believe currently this might be an error. Instead the simple 36...fxg3+ followed by a march of the king back to the kingside seemingly would have won.
Now white played 37.g4! and the problem now is, despite the fact that he looses h3 there is still no way for the king to invade. The game continued and finally this position was reached:
[d]8/8/8/3p2p1/kppN1pP1/2Pq1P2/1PR2K2/8 b - - 0 44
Black tried the spectacular 44...Qxc2+ and after 45.Nxc2 bxc3 46.bxc3 Kb3 47.Nb4? he won with 47...d4. Instead 47.Nd4 is an easy draw (if you have stockfish). If the king is on the g-file, the queen sacrifice really wins, but stockfish couldn't figure it out in time how to force that.

[BeyondCritics]

[d]8/8/8/3p2p1/kppN1pP1/2Pq1P2/1PR2K2/8 b - - 0 44

In this position 44...Qd1 wins (but not 44...Qxc2+? 45.Nxc2 draw). Since after 45.Kg2 both 45...Qxc2+ and even 45...Qxd4 are winning, white plays 45.Re2 Qc1 46.Rc2 Qa1 and zugwang again, e.g. 47.Kg2 Qe1 48.Re2 Qc1 49.Rc2 Qxc2+ and wins. And after 47.Ne2 Kb3 white collapses.

So the current verdict is, that black played very well until move 44...Qxc2?.

[Nordlandia]

Number of pawns is intact, besides knight outpost is atleast worth one pawn in positional compensation for the material deficit.

I read somewhere that rook & knight need two pawns to equalize the queen.

R+N + 1.50 ~ Queen | Ceteris Paribus

-----

Hash: 4096 Mb per engine.
EGTB: 6-Men Syzygy

[pgn][Event "i5-5200U, Slow 90m+45s"]
[Site "DESKTOP-DD1B2QU"]
[Date "2017.03.18"]
[Round "1"]
[White "Komodo 10.4 64-bit"]
[Black "Stockfish 170317 64 POPCNT"]
[Result "0-1"]
[SetUp "1"]
[FEN "6k1/pp3p2/6p1/3p4/2pN4/P1P2P1P/1P1qR1P1/6K1 b - - 0 1"]
[PlyCount "91"]

1... Qf4 2. Kf2 (2. Kf2 Qc1 3. h4 {-1.05/35 Stockfish 8 64}) 2... g5 (2... Qh4+
3. Kg1 a5 {-1.18/36 Stockfish 270217 64}) 3. Re3 (3. Re3 Qh4+ 4. Ke2 {-0.99/40
Komodo 10.3 64-bit full Syzygy (150GB) on SSD & 4GB Hash}) 3... Qh4+ (3... Qh4+
4. Ke2 Qh7 {-0.75/36 Stockfish 5 64 SSE4.2S}) 4. Kf1 (4. Kg1 Qh7 {-1.02/36
Stockfish 8 64 BMI2}) 4... Qh7 (4... Qh7 5. Re1 Qd3+ {-1.24/27 Deep Fritz 14
x64}) 5. Re8+ Kg7 6. Kf2 (6. Re1 Qd3+ 7. Kf2 {-1.06/46 Stockfish 090317 64
POPCNT}) 6... Qb1 (6... Qb1 7. Re2 a6 {-0.96/37 Komodo 10.2 64-bit}) 7. Re2 (7.
Re2 Kf6 8. Nb5 {-1.30/22 Deep Fritz 14}) 7... Kf6 (7... Kf6 8. Nb5 Qd1 {
-1.10/38 Stockfish 7 64}) 8. Ke3 Qd1 (8... Qg1+ 9. Kd2 Kg6 {-1.33/40 Stockfish
270217 64 BMI2}) 9. Kf2 (9. Kf2 Qb1 {-1.14/44 Stockfish 090317 64 POPCNT}) 9...
Qc1 (9... Qb1 10. Kg3 Qc1 {-1.28/26 Deep Fritz 14 x64}) 10. Rc2 Qb1 (10... Qb1
11. Re2 {-1.43/33 Stockfish 270217 64}) 11. Re2 (11. Kg3 Qe1+ 12. Kh2 {-1.26/
26 Deep Fritz 14 x64}) 11... a6 (11... a6 {-1.12/30 Houdini 5.01 Pro x64-pext})
12. Kg3 (12. Kg3 Kg6 {-0.93/41 Komodo 10.2 64-bit}) 12... b5 (12... Qf1 13. Rc2
b5 {-1.45/35 Stockfish 8 64 BMI2}) 13. Kf2 Qc1 (13... Kg7 14. Rd2 Qc1 {-0.88/
27 Houdini 1.5a x64}) 14. Rc2 Qd1 (14... Qd1 15. Re2 Qb1 {-1.26/26 Houdini 5.
01 Pro x64-pext}) 15. Re2 (15. Re2 Qa1 16. Rd2 {-0.68/36 Komodo 10 64-bit})
15... Qa1 (15... Qa1 {-1.23/30 Stockfish 7 64 POPCNT}) 16. Rc2 Ke5 (16... Ke5
17. Re2+ Kd6 {-0.99/19 Deep Rybka 4 w32}) 17. Kg3 (17. Kg3 Qe1+ 18. Kh2 {
-1.50/33 Stockfish 7Beta2}) 17... Qe1+ (17... Qe1+ 18. Kh2 Kd6 {-1.27/45
Komodo 10.3 64-bit}) 18. Kh2 (18. Kh2 Kf6 {-1.09/38 Komodo 9.3 64-bit}) 18...
Kd6 (18... Kf6 19. Re2 Qd1 {-1.22/25 Deep Fritz 14 x64}) 19. g3 (19. g3 Kc5 20.
Re2 {-1.50/42 Stockfish 270217 64}) 19... Kc5 (19... Kc5 20. Re2 Qc1 {-1.33/41
Komodo 10.3 64-bit}) 20. Re2 Qa1 (20... Qa1 21. h4 gxh4 {-1.99/40 Stockfish
150317 64 POPCNT}) 21. h4 gxh4 (21... gxh4 22. gxh4 a5 {-1.62/24 Fritz 11 SE})
22. gxh4 (22. gxh4 a5 23. Rc2 {-1.05/21 Houdini 3 Pro x64}) 22... a5 (22... a5
{-1.45/40 Stockfish 8 64}) 23. Kg3 (23. Rc2 b4 {-1.81/34 Stockfish 8 64}) 23...
b4 (23... b4 24. axb4+ axb4 {-1.94/26 Deep Fritz 13}) 24. axb4+ (24. axb4+ axb4
25. Rc2 {-1.09/21 Deep Rybka 4 SSE42 x64}) 24... axb4 (24... axb4 25. Rc2 Kd6 {
-0.97/25 Komodo 9.02 64-bit}) 25. Rc2 (25. Rc2 Kd6 26. Kf4 {-1.68/28 Stockfish
7 64}) 25... Kd6 (25... Kd6 26. Re2 Kd7 {-1.56/30 Komodo 10 64-bit}) 26. Kg4
Ke7 (26... Ke5 27. f4+ Kf6 {-2.42/32 Komodo 10.4 64-bit}) 27. Kf4 (27. Kf5 f6
28. Kf4 {-2.17/23 Deep Fritz 13}) 27... Kf6 (27... Kf6 28. Kg4 Qe1 {-2.83/27
Deep Fritz 13}) 28. Kg4 (28. Kg4 Qh1 29. Kg3 {-2.36/37 Stockfish 5 64 SSE4.2S})
28... Qg1+ (28... Qg1+ {-2.07/27 Houdini 3 x64}) 29. Kf4 (29. Kh3 {-2.70/34
Stockfish 270217 64 BMI2}) 29... Qe1 (29... Qh1 30. Kg3 Kg6 {-2.27/24 Deep
Rybka 4 SSE42 x64}) 30. Kg4 (30. Kg4 Qd1 31. Rg2 {-2.50/36 Stockfish 7 64})
30... Qh1 31. Kg3 (31. Re2 Qd1 32. Rg2 {-1.95/24 Fritz 11 SE}) 31... Kg6 (31...
Kg6 32. Kf4 {-2.18/33 Komodo 10.3 64-bit full Syzygy (150GB) on SSD & 4GB Hash}
) 32. Kf4 (32. Kf4 bxc3 33. Ke5 {-1.78/30 Houdini 5.01 Pro x64-pext}) 32... f6
(32... f6 33. Nf5 Qg1 {-2.70/34 Stockfish 8 64}) 33. h5+ (33. Nf5 Qb1 {-2.14/
26 Houdini 5.01 Pro x64-pext}) 33... Qxh5 (33... Qxh5 34. Kg3 Kf7 {-2.84/43
Stockfish 060217 64}) 34. Rg2+ (34. Kg3 Qh6 35. Kg2 {-3.04/42 Komodo 10.3
64-bit}) 34... Kh7 (34... Kf7 35. Kg3 Qg5+ {-2.40/30 Houdini 4 Pro x64}) 35.
Kg3 (35. Kg3 Qg5+ 36. Kh3 {-2.77/36 Komodo 10.2 64-bit}) 35... Qg5+ (35... Qg6+
36. Kh3 Qh6+ {-2.86/37 Komodo 10.2 64-bit}) 36. Kh3 (36. Kh3 Qe3 37. Rc2 {
-2.38/35 Komodo 10 64-bit}) 36... Qe3 (36... Qh6+ 37. Kg3 Kg6 {-2.35/31 Komodo
9.02 64-bit}) 37. Re2 (37. Re2 Qd3 38. Rc2 {-3.54/28 Deep Fritz 13}) 37... Qh6+
(37... Qd3 38. Rc2 Kh6 {-2.83/39 Komodo 10.2 64-bit}) 38. Kg2 (38. Kg2 Qc1 {
-3.07/47 Stockfish 150317 64 POPCNT}) 38... Kg6 (38... Qc1 39. Rc2 Qd1 {
-2.80/37 Komodo 10 64-bit}) 39. Rc2 (39. Kf2 Qc1 40. Rc2 {-3.38/27 Deep Fritz
13}) 39... Qe3 (39... Kf7 40. Kf2 Qh2+ {-2.29/38 Komodo 10 64-bit}) 40. Kf1 (
40. Re2 Qd3 {-3.12/35 Stockfish 7 64}) 40... Qd3+ (40... Qd3+ 41. Kf2 Kg5 {
-3.58/39 Komodo 10.3 64-bit}) 41. Ke1 (41. Kg2 bxc3 42. bxc3 {-2.48/31 Deep
Rybka 4 SSE42 x64}) 41... Kg5 (41... Kg5 {-5.05/38 Stockfish 270217 64 BMI2})
42. Kf2 (42. Kf2 Kh4 43. Kg2 {-3.80/37 Komodo 10.4 64-bit}) 42... Kh4 (42...
Kh4 43. Kg2 {-5.06/34 Stockfish 8 64}) 43. Kg2 (43. Kg2 Qh7 {-5.20/35
Stockfish 270217 64 BMI2}) 43... Qd1 (43... Qh7 44. Kh2 Qc7+ {-2.96/26 Deep
Fritz 14 x64}) 44. Nf5+ (44. Nf5+ Kg5 45. Nd4 {-2.80/32 Komodo 10 64-bit})
44... Kh5 (44... Kh5 45. Nd4 Kg5 {-4.01/39 Komodo 10.3 64-bit}) 45. Nd4 Kg5 (
45... Kh4 46. Nf5+ Kg5 {-2.46/30 Houdini 4 Pro x64}) 46. Rf2 (46. Rf2 Qd3 47.
Rc2 {-3.20/23 Fritz 11 SE}) 46... Kf4 (46... Qd3 {-2.91/24 Houdini 3 x64}) 0-1

[/pgn]

https://nb.lichess.org/zhLTx5Vn

http://www.viewchess.com/cbreader/2017/ ... 89078.html

[BeyondCritics]

OK, black won that experimental game. But white made it all to easy with 19.g3 and 21.h4.
Also i don't like 2...g5. This is scary, since it allows a further defense idea with g4 and Kg2. Say instead of 19.g3 i play 19.Re2 (say) Qb1 and now 20.g4
[d]8/5p2/p2k4/1p1p2p1/2pN2P1/P1P2P1P/1P2R2K/1q6 b - - 0 20
Can stockfish navigate to the win from here on?

[BeyondCritics]

OK, black won that experimental game. But white made it all to easy with 19.g3 and 21.h4.
Also i don't like 2...g5. This is scary, since it allows a further defense idea with g4 and Kg2. Say instead of 19.g3 i play 19.Re2 (say) Qb1 and now 20.g4
[d]8/5p2/p2k4/1p1p2p1/2pN2P1/P1P2P1P/1P2R2K/1q6 b - - 0 20
Can stockfish navigate to the win from here on?

It might be a draw now. At least it is comparatively difficult. Consider this position:
[d]8/5p2/8/3p2p1/kppN2P1/2Pq1P2/1PR2K2/8 w - - 1 1
After 1.Kg2 bxc3 2.bxc3 Qxc2 does not work anymore (and stockfish shows nothing else), since after 4.Nxc2 Kb3 white has 5.Ne3 with draw. And 2...Qxd4 does not work either (but after 1.Kg1 it does, so beware).

Now consider this:
[d]8/5p2/3k4/3p2p1/1ppN2P1/2Pq1P2/1PR2K2/8 b - - 0 1
After 1...Ke5 2.Re2 Kf4?? it follows 3.Re8 and white wins with 4.Ne2+. This works also with the king on g2. Therefore black can not intrude over f4 either.

[Nordlandia]

Oliver Roese the way i see it

This endgame is very complex, and it is not easy to draw conclusions. Only with very strong computer hardware.

We considered it to be engine draw, but i'm not so sure anymore.

It is not easy to form any plans without assistance from computers.

[leavenfish]

The general thought is that CALCULATION is the most important thing in endings...which is why trainers use them so much. One would think that engines would excel in many endgames.

[Nordlandia]

Who here is using Fritz GUI with active playchess subscription?

It is possible to conduct a match over network in this spesific position.

Reply or send me PM if interested.

http://en.chessbase.com/post/lending-yo ... oud-engine

[peter]

Hi Jon!

Here's a game I did let play an overaggressive SugaR-setting with reduced LMRs against latest Brainfish.
Both had 12 threads ponder on with 8G hash, TC was 120'+30" for the first 37 moves without tbs, then 90+30 with full Syzygys.

[pgn][Event "Lang 120m+30s"]
[Site "Dort"]
[Date "2017.03.20"]
[Round "1"]
[White "Brainfish 190317 64 POPCNT"]
[Black "SugaR 110317 64 POPCNT"]
[Result "*"]
[Annotator "Martan,Peter"]
[FEN "6k1/pp3p2/6p1/3p4/2pN4/P1P2P1P/1P1qR1P1/6K1 b - - 0 1"]
[SetUp "1"]
[TimeControl "7200+30"]

1...Qd1+ 2.Kf2 { [%eval -141,45] [%emt 0:05:02] } 2...Kf8 { [%eval -154,27] [%emt 0: 19:57] (Dc1) } 3.Kg3 { [%eval -133,55] [%emt 0:03:43] (Te1) } 3...Qh1 { [%eval -154, 29] [%emt 0:17:32] (Kg7) } 4.Re5 { [%eval -148,50] [%emt 0:03:22] (Kf2) } 4...Qg1 { [%eval -161,28] [%emt 0:15:23] (Dc1) } 5.Re2 { [%eval -147,56] [%emt 0:02:53] } 5...Kg7 { [%eval -161,28] [%emt 0:10:36] (Dh1) } 6.Re7 { [%eval -148,53] [%emt 0:03: 42] (h4) } 6...b6 { [%eval -162,26] [%emt 0:04:33] } 7.Re8 { [%eval -147,56] [%emt 0: 00:00] } 7...Qa1 { [%eval -169,26] [%emt 0:11:51] (Dc1) } 8.Re2 { [%eval -145,65] [%emt 0:17:17] } 8...Qf1 { [%eval -177,30] [%emt 0:00:00] (Dd1) } 9.Re8 { [%eval -145, 57] [%emt 0:02:02] (Te7) } 9...a6 { [%eval -177,27] [%emt 0:07:10] (Db1) } 10.Re2 { [%eval -145,44] [%emt 0:05:57] } 10...Kf6 { [%eval -177,27] [%emt 0:03:45] (Db1) } 11.Rc2 { [%eval -171,44] [%emt 0:02:40] (Te3) } 11...Qe1+ { [%eval -210,28] [%emt 0:09:19] (b5) } 12.Kh2 { [%eval -186,56] [%emt 0:04:03] } 12...b5 { [%eval -210,27] [%emt 0:03: 53] } 13.Re2 { [%eval -185,56] [%emt 0:00:00] } 13...Qf1 { [%eval -208,25] [%emt 0:07: 26] } 14.Rc2 { [%eval -185,57] [%emt 0:00:00] } 14...Ke5 { [%eval -222,28] [%emt 0:06: 11] (Ke7) } 15.Re2+ { [%eval -185,55] [%emt 0:02:29] (h4) } 15...Kf6 { [%eval -219,27] [%emt 0:03:16] } 16.Rc2 { [%eval -185,57] [%emt 0:00:00] } 16...Ke7 { [%eval -214,25] [%emt 0:04:17] } 17.h4 { [%eval -185,56] [%emt 0:02:50] (Kg3) } 17...Qd1 { [%eval -197, 24] [%emt 0:02:24] (Kf6) } 18.Rf2 { [%eval -185,48] [%emt 0:02:08] (Kh3) } 18...Kd6 { [%eval -183,23] [%emt 0:01:17] (Kf8) } 19.Re2 { [%eval -193,43] [%emt 0:06:38] } 19...Kc5 { [%eval -196,26] [%emt 0:00:00] } 20.Kg3 { [%eval -179,43] [%emt 0:04:10] } 20...a5 { [%eval -221,25] [%emt 0:00:00] } 21.Re8 { [%eval -215,44] [%emt 0:05:33] (Tc2) } 21...Qb1 { [%eval -222,23] [%emt 0:01:25] (Dd2) } 22.Re2 { [%eval -229,46] [%emt 0:04:48] } 22...Qh1 { [%eval -219,26] [%emt 0:00:00] (Dc1) } 23.Re8 { [%eval -237,47] [%emt 0:03:40] } 23...Qc1 { [%eval -225,25] [%emt 0:00:00] (Db1) } 24.b4+ { [%eval -215,41] [%emt 0:04:02] (Tc8+) } 24...Kb6 { [%eval -214,26] [%emt 0:01:01] (axb4) } 25.Rb8+ { [%eval -222,43] [%emt 0:03:08] } 25...Kc7 { [%eval -215,31] [%emt 0: 00:00] } 26.Rxb5 { [%eval -222,45] [%emt 0:00:47] } 26...axb4 { [%eval -210,22] [%emt 0:00:41] } 27.axb4 { [%eval -222,47] [%emt 0:03:18] } 27...Qxc3 { [%eval -220,27] [%emt 0:00:00] } 28.Rc5+ { [%eval -222,47] [%emt 0:00:24] } 28...Kb8 { [%eval -221,30] [%emt 0:00:52] (Kd7) } 29.Rb5+ { [%eval -222,47] [%emt 0:01:58] } 29...Kc8 { [%eval -221,32] [%emt 0:00:00] (Kc7) } 30.Rc5+ { [%eval -222,49] [%emt 0:14:08] } 30...Kd8 { [%eval -287,34] [%emt 0:00:00] (Kd7) } 31.Rxd5+ { [%eval -270,42] [%emt 0:03:40] } 31...Ke8 { [%eval -318,29] [%emt 0:00:00] } 32.b5 { [%eval -329,41] [%emt 0:00:16] } 32...Qe1+ { [%eval -317,27] [%emt 0:02:06] } 33.Kf4 { [%eval -329,45] [%emt 0:00:00] } 33...Qxh4+ { [%eval -313,24] [%emt 0:01:24] } 34.Ke3 { [%eval -329,46] [%emt 0:00:02] (g4) } 34...Qe7+ { [%eval -334,23] [%emt 0:00:41] } 35.Kd2 { [%eval -329,48] [%emt 0: 00:00] } 35...Qa3 { [%eval -334,22] [%emt 0:00:30] } 36.Ne2 { [%eval -329,51] [%emt 0: 01:11] } 36...Ke7 { [%eval -326,24] [%emt 0:00:00] (f5) } 37.Ke1 { [%eval -329,46] [%emt 0:04:02] } 37...Qa8 { [%eval -338,29] [%emt 0:00:00] (f5) } 38.Rd2 { [%eval -318, 56] [%emt 0:07:47] } 38...g5 { [%eval -363,31] [%emt 0:16:44] (Da5) } 39.Kf2 { [%eval -427,51] [%emt 0:16:41] } 39...Qa7+ { [%eval -363,31] [%emt 0:02:34] } 40.Ke1 { [%eval -427,59] [%emt 0:02:48] (Kf1) } 40...Qa1+ { [%eval -370,32] [%emt 0:29:08] } 41.Kf2 { [%eval -487,59] [%emt 0:00:00] } 41...Qe5 { [%eval -370,32] [%emt 0:21:44] } 42.g4 { [%eval -494,61] [%emt 0:05:33] (Td4) } 42...Qxb5 { [%eval -457,32] [%emt 0:16:01] (Dc5+) } 43.Nd4 { [%eval -627,49] [%emt 0:11:54] (Tc2) } 43...Qc5 { [%eval -508,34] [%emt 0:11:34] (Db6) } 44.Kg2 { [%eval -1564,47] [%emt 0:11:27] (Kf1) } 44...c3 { [%eval -508,33] [%emt 0:04:06] } 45.Re2+ { [%eval -2093,43] [%emt 0:02:33] } 45...Kd7 { [%eval -508,36] [%emt 0:00:00] (Kd6) } 46.Nc2 { [%eval -2838,43] [%emt 0:06:10] } 46...f5 { [%eval -508,33] [%emt 0:00:07] (Kd6) } 47.gxf5 { [%eval -2597,46] [%emt 0: 01:32] } 47...Qxf5 { [%eval -508,31] [%emt 0:01:33] } 48.Ne1 { [%eval -7695,43] [%emt 0:00:37] } 48...Kd6 { [%eval -508,33] [%emt 0:01:05] } 49.Rc2 { [%eval -12831,52] [%emt 0:03:37] (Sc2) } 49...Qb5 { [%eval -749,35] [%emt 0:04:17] (Df6) } 50.Kf2 { [%eval -12831,59] [%emt 0:03:42] } 50...Qb2 { [%eval -811,36] [%emt 0:00:00] (Dc5+) } 51.Re2 { [%eval -12832,55] [%emt 0:06:48] (Kf1) } 51...Kd5 { [%eval -1322,35] [%emt 0: 02:49] (Db6+) } 52.Nd3 { [%eval -12834,58] [%emt 0:02:06] (Kf1) } 52...Qb6+ { [%eval -1946,32] [%emt 0:02:57] (Db1) } 53.Kf1 { [%eval -12834,61] [%emt 0:01:51] } 53...Qc7 { [%eval -2488,30] [%emt 0:00:00] (Df6) } 54.Ne1 { [%eval -12835,64] [%emt 0:03: 06] } 54...Qd6 { [%eval -9647,30] [%emt 0:00:00] (Kc4) } 55.Kg1 { [%eval -12834,64] [%emt 0:03:42] } 55...Qh6 { [%eval -12786,33] [%emt 0:00:00] (Kc4) } 56.Rh2 { [%eval -12835,61] [%emt 0:02:57] (Kg2) } 56...Qe6 { [%eval -12834,34] [%emt 0:02:26] } 57.Kf1 { [%eval -12836,63] [%emt 0:00:00] } 57...Qf6 { [%eval -12836,32] [%emt 0:01:16] (Df5) } 58.Rf2 { [%eval -12836,64] [%emt 0:01:52] } 58...Kc4 { [%eval -12837,33] [%emt 0:00: 00] } 59.Kg1 { [%eval -12837,67] [%emt 0:00:25] } 59...Qe7 { [%eval -12837,32] [%emt 0: 00:40] (De6) } 60.Kf1 { [%eval -12838,70] [%emt 0:02:28] } 60...Qh7 { [%eval -12838,34] [%emt 0:00:00] } 61.Kg2 { [%eval -12839,71] [%emt 0:04:04] } 61...g4 { [%eval -12839, 35] [%emt 0:00:00] } 62.fxg4 { [%eval -12839,73] [%emt 0:00:47] } 62...Qe4+ { [%eval -12840,29] [%emt 0:00:45] } 63.Kf1 { [%eval -12840,73] [%emt 0:00:47] } 63...Qh1+ { [%eval -12841,34] [%emt 0:00:26] } 64.Ke2 { [%eval -12841,75] [%emt 0:00:00] } 64...Qh3 { [%eval -12841,30] [%emt 0:00:09] } 65.g5 { [%eval -12842,74] [%emt 0:01:38] } 65...Kb3 { [%eval -12842,34] [%emt 0:00:06] } 66.Rf3 { [%eval -12843,71] [%emt 0:00: 10] } 66...Qg4 { [%eval -12843,30] [%emt 0:00:00] } 67.Kf1 { [%eval -12843,73] [%emt 0: 05:14] } 67...Qc4+ { [%eval -12844,38] [%emt 0:00:00] } 68.Kf2 { [%eval -12844,74] [%emt 0:04:12] } 68...Qc5+ { [%eval -12845,35] [%emt 0:00:00] } 69.Re3 { [%eval -12845, 77] [%emt 0:04:13] } 69...Kc4 { [%eval -12845,31] [%emt 0:00:00] } 70.g6 { [%eval -12846,77] [%emt 0:01:14] } 70...c2 { [%eval -12846,33] [%emt 0:00:00] } 71.Nd3 { [%eval -12847,79] [%emt 0:02:17] } 71...Qg5 { [%eval -12847,38] [%emt 0:00:00] (Df5+) } 72.Nb2+ { [%eval -12847,61] [%emt 0:00:57] } 72...Kd4 { [%eval -12848,38] [%emt 0:00: 00] } 73.Rd3+ { [%eval -12848,63] [%emt 0:00:28] } 73...Ke4 { [%eval -12849,37] [%emt 0:00:44] } 74.Rc3 { [%eval -12849,73] [%emt 0:00:00] } 74...Qd2+ { [%eval -12850,33] [%emt 0:00:11] } 75.Kg3 { [%eval -12850,69] [%emt 0:00:18] (Kf1) } 75...Qxc3+ { [%eval -12850,36] [%emt 0:01:42] } 76.Kh2 { [%eval -27999,0] [%emt 0:00:00] (Kf2) } 76...c1=Q { [%eval -27999,0] [%emt 0:00:00] } 77.Nd1 { [%eval -27999,0] [%emt 0:00:00] } 77...Qxd1 { [%eval -27999,1] [%emt 0:00:00] } 78.g7 { [%eval -27999,0] [%emt 0:00:00] } 78...Qxg7 { [%eval -27999,1] [%emt 0:00:00] } 79.Kh3 { [%eval -27999,1] [%emt 0:00:00] } 79...Qh5# { [%eval -27999,0] [%emt 0:00:00] 0-1 } *
[/pgn]

That SugaR made the full point here for Black, of course doesn't mean Black has a forced win, but considering the setting would perform lower in balanced positions than default, I think White has the more difficult task to hold that than Black has to win, as far as it's about eng-eng-game only.

Yet the question remains, if White was just clueless about its own pawn- moves right from the very start and so lost the chance to build up a fortress in the early stage.

[Nordlandia]

Hi Jon!

Here's a game I did let play an overaggressive SugaR-setting with reduced LMRs against latest Brainfish.
Both had 12 threads ponder on with 8G hash, TC was 120'+30" for the first 37 moves without tbs, then 90+30 with full Syzygys.

What GUI do you use for the moment. I'm very interested in an network match in this position, taking advantage of ponder.

If you have fritz GUI with playchess subscription then we can try.

My CPU is i7-5960X 4.1GHz | 16 GB RAM