Tactical mistake by Stockfish (Grischuk-Ding at candidates)

[jp]

Long run with Ethereal 12.00 4 threads and 8192Gb it actually finds Nf4 but get another move for white than Nf3

13.45: -0.81/39 12...Nxe5 13.Rxe5 Nf4 14.Nf3 Nxg2 15.Kxg2 a5 16.c3 Ra6 17.d4 Rg6+ 18.Kh2 Bd6 19.Nh4 a4 20.Nxg6 hxg6 21.Qg4 Qc6 22.Bf4 axb3 23.axb3 Bxe5 24.dxe5 Qe4 25.Rg1 Bc8 26.Qg3 Re8 27.b4 Qe2 28.b3 Be6 29.Be3 Bxb3 30.Qg4 Qxg4 31.hxg4 Rxe5 32.Ra1 Bc4 33.Ra7 c6 34.Bd4
37.07: -0.53/40 12...Nxe5 13.Rxe5 Nf4 14.Qg4 Qxg4 15.hxg4 Bd6 16.Re3 Nxg2 17.Re2 Nh4 18.Ne4 Nf3+ 19.Kf1 Be7 20.Bf4 Bc8 21.Nd2 Nxd2+ 22.Rxd2 Bxg4 23.Bxc7 h5 24.c3 Rac8 25.Bf4 h4 26.Re1 Rfe8 27.Bd5 g5 28.Bh2 Bf8 29.Re3 Kg7 30.Kg2 h3+ 31.Kg1 Rcd8 32.Rxe8 Rxe8 33.f3 Bf5 34.Bb7 Re3 35.Kf2 Rxd3 36.Rxd3 Bxd3 37.Bxa6 Kg6 38.Bb7 f6

Yes, but this time Ethereal did switch from 14...Nxh3+ to ... Nxg2 (with the necessary ...a5 and ...Ra6 follow-up) at depth 39, prompting it to switch White's move 14 at depth 40, so it succeeded.

And it's possible that its choice of switch, 14. Qg4, is at least as good as 14.Ne4.

SF 10 after 14.Qg4:
depth=36
-0.22 14...Qxg4 15.hxg4 Bd6 16.Re1 Nxg2 17.Re2 Nh4 18.Ne4 Nf3+ 19.Kf1 Nh2+ 20.Kg1 Nxg4 21.Nxd6 cxd6 22.Re7 Bf3 23.Bf4 d5 24.c4 dxc4 25.dxc4 bxc4 26.Bxc4 Nf6 27.Bg5 Nd5 28.Re5 h6 29.Bxd5 Bxd5 30.Rxd5 hxg5 31.Rxg5 Rfc8 32.Rd5 Rab8 33.b3 Rb4 34.Ra5 Rc2 35.Rxa6 Rg4+ 36.Kf1
depth=37
-0.53 14...Qxg4 15.hxg4 Bd6 16.Re1 Nxg2 17.Re2 Nh4 18.Ne4 Nf3+ 19.Kf1 Nh2+ 20.Kg1 Nxg4 21.Nxd6 cxd6 22.Re7 Bf3 23.Bf4 d5 24.c4 dxc4 25.dxc4 bxc4 26.Bxc4 Nf6 27.Bg5 Bd5 28.b3 Bxc4 29.bxc4 Rac8 30.Bxf6 gxf6 31.Rc1 Rc6 32.Kg2 Rfc8 33.Re4 f5 34.Rh4 Kg7 35.Kf3 Rc5 36.Rg1+ Kf6 37.Rxh7 Rxc4 38.Rh6+ Ke5 39.Rxa6

Komodo 13.2 after 14.Qg4:
depth=33
-0.65 14...Qxg4 15.hxg4 Bd6 16.Re1 Nxg2 17.Re2 Nf4 18.Re1 Bb4 19.a3 Ba5 20.Kf1 Kh8 21.Re5 Ng6 22.Rf5 Bb6 23.Bd5 c6 24.Be4 Bc8 25.Bxc6 Ra7 26.Be4 Bxf5 27.gxf5 Ne7 28.a4 g6 29.f6 Ng8 30.axb5 axb5 31.Rxa7 Bxa7 32.Bc6
depth=34
-0.51 14...Qxg4 15.hxg4 Bd6 16.Re1 Nxg2 17.Re2 Nf4 18.Re1 Bb4 19.a3 Ba5 20.Kf1 Kh8 21.Re5 Bb6 22.Rf5 Ng6 23.a4 Ne7 24.Rh5 f5 25.g5 Ng6 26.Nb1 Ne5 27.Nc3 Bf3 28.Rh3 Bg4 29.Rh1 c6 30.Ne2 Rae8 31.Be3 Bxe3 32.fxe3 Nf7 33.Bxf7

[jp]

SF10 after 14.Ne4:

depth=36
-0.84 14...Ng6 15.Rxe7 Qxe7 16.Be3 Bxe4 17.dxe4 Rfd8 18.Qg4 Ne5 19.Bg5 Nxg4 20.Bxe7 Re8 21.Bh4 Ne5 22.f3 Nc4 23.Rd1 Nxb2 24.Rd7 Nc4 25.Rxc7 Rec8 26.Re7 a5 27.a4 bxa4 28.Bxa4 h5 29.Be1 f6 30.Bf2 Nd2 31.e5 Rab8 32.exf6 gxf6 33.Be3 Rc4 34.Bxd2 Rxa4 35.Ra7 Ra1+ 36.Kh2 Ra2 37.Rxa5 Rxc2
depth=37
-0.61 14...Ng6 15.Rxe7 Qxe7 16.Be3 Bxe4 17.dxe4 Rfd8 18.Qg4 Ne5 19.Bg5 Nxg4 20.Bxe7 Re8 21.Bh4 Ne5 22.f3 c6 23.Be1 h6 24.Bc3 a5 25.a4 b4 26.Bd4 Kh7 27.Bxe5 Rxe5 28.Rd1 Ra7 29.Kf1 Re8 30.Rd6 Rc7 31.Bc4 h5 32.Kf2 h4 33.Bd3 Re5 34.Rd8 Rc5 35.Ra8
depth=38
-0.79 14...Ng6 15.Rxe7 Qxe7 16.Be3 Bxe4 17.dxe4 Rfd8 18.Qg4 Ne5 19.Bg5 Nxg4 20.Bxe7 Re8 21.Bh4 Ne5 22.f3 c6 23.Be1 Nd7 24.Bf2 h6 25.a4 Red8 26.Kh2 g6 27.c3 Ne5 28.Bd4 Nc4 29.Ra2 a5 30.Kg1 Rd7 31.axb5 cxb5 32.Kf2 a4 33.Bxc4 bxc4

Komodo 13.2 after 14.Ne4:

depth=36
-0.69 14...Ng6 15.Rxe7 Qxe7 16.Be3 Bxe4 17.dxe4 Rfe8 18.a4 Rad8 19.Qf3 Ne5 20.Qe2 Qb4 21.axb5 axb5 22.f3 Ra8 23.Rc1 Nc4 24.Bxc4 Qxc4 25.Qxc4 bxc4 26.Bd4 f6 27.Bc3 Kf7 28.Kf2 Ke6 29.Re1 g5 30.e5 f5 31.Ke3 c6 32.Kd4 Red8+ 33.Kxc4 Ra6 34.g4
depth=37
-0.69 14...Ng6 15.Rxe7 Qxe7 16.Be3 Bxe4 17.dxe4 Rad8 18.Qg4 Kh8 19.a4 Rfe8 20.axb5 axb5 21.Qh5 Ne5 22.Qe2 c6 23.Re1 Qb4 24.f3 Rd7 25.Ra1 Nc4 26.Bxc4 bxc4 27.Ra6 c3 28.Qe1 Qxb2 29.Rxc6 Qxc2 30.Qxc3 Rd1+ 31.Kh2 Qxc3 32.Rxc3 Red8 33.Kg3 Kg8 34.Rc7 R1d7 35.Rxd7


SF10 after 14.Nf3:

depth=36
-0.32 14...Nxg2 15.Kxg2 a5 16.c3 Ra6 17.d4 Rg6+ 18.Kh2 Bd6 19.Nh4 a4 20.Nxg6 hxg6 21.Qg4 Qxg4 22.hxg4 axb3 23.Kh3 f6 24.Re6 Ra8 25.a3 Kf7 26.Rxd6 cxd6 27.Bf4 Ke6 28.g5 Kd7 29.Kg3 Bc6 30.f3 Rh8 31.Be3 Rh5 32.d5 Bxd5 33.a4 bxa4 34.Rxa4 fxg5
depth=37
-0.32 14...Nxg2 15.Kxg2 a5 16.c3 Ra6 17.d4 Rg6+ 18.Kh2 a4 19.Bc2 Bd6 20.Bf4 Rf6 21.Qd2 Bxf3 22.Qd3 g6 23.Qxf3 Rxf4 24.Qxf4 f6 25.Qe3 fxe5 26.dxe5 Bxe5+ 27.Kg2 Bf4 28.Qc5 Qd2 29.Be4 Kg7 30.Bf3 Rf5 31.Qd4+ Qxd4 32.cxd4 Bg5 33.Bc6 Bh4 34.Rf1 Kh6 35.a3 Rf4 36.Bxb5 Rxd4 37.Kf3 Rd2 38.Bxa4 Bg5 39.Bc6 Rxb2

[Vinvin]

Big improvement with SF 13.
It drops Nxe5 after 33 millions nodes (1 core)

FEN: r4rk1/1bpqbppp/p1n5/1p1np3/8/1B1P1N1P/PPPN1PP1/R1BQR1K1 w - - 2 12

Stockfish_13_win_x64_modern:
Found 511 tablebases
NNUE evaluation using nn-62ef826d1a6d.nnue enabled
...
26/33+ 00:15 17 038 529 1 067 510 +0,21 12.a4
26/33+ 00:16 17 501 251 1 069 431 +0,29 12.a4
26/33 00:16 17 597 106 1 069 602 +0,20 12.a4 Nf4 13.Ne4 Ng6 14.Be3 Nd4 15.Nxd4 exd4 16.Bg5 Bxg5 17.Nxg5 Nf4 18.Qg4 Qxg4 19.hxg4 Bxg2 20.Re5 g6 21.axb5 axb5 22.Rxa8 Bxa8 23.Rxb5 Bg2 24.Rc5 h6 25.Ne4 Bf3 26.Rxc7 Kg7 27.Rd7 Bxg4
27/39+ 00:17 18 501 013 1 070 103 +0,28 12.a4
27/43 00:19 20 654 528 1 071 626 +0,29 12.Nxe5 Nxe5 13.Rxe5 Nf4 14.Nf3 Nxh3+ 15.gxh3 c5 16.Bf4 Bd6 17.Re4 Bxf4 18.Rxf4 Qxh3 19.Qe2 c4 20.dxc4 Rae8 21.Qf1 Qh6 22.Rh4 Qg6+ 23.Qg2 Bxf3 24.Qxg6 hxg6 25.cxb5 axb5 26.Rf4 Bc6 27.Rg4 Kh7 28.Rd4 Re5 29.Rh4+ Kg8 30.Kf1 Rh5 31.Rxh5 gxh5
28/46- 00:23 25 330 327 1 066 450 +0,21 12.Nxe5 Nxe5
28/47- 00:28 29 944 865 1 058 346 +0,12 12.Nxe5 Nxe5
28/47 00:31 32 835 671 1 051 987 +0,11 12.a4 Nf4 13.Ne4 Ng6 14.axb5 axb5 15.Rxa8 Bxa8 16.Nfg5 h6 17.Qh5 hxg5 18.Qxg6 Nd4 19.Nxg5 Bxg5 20.Qxg5 Nxb3 21.cxb3 f6 22.Qg3 Rd8 23.f4 Qxd3 24.Qxd3 Rxd3 25.fxe5 fxe5 26.Rxe5 Rd1+ 27.Kh2 Bxg2 28.Kxg2 Rxc1 29.Rxb5 Rc2+ 30.Kf3 Rxb2
29/42 00:38 40 220 123 1 042 431 +0,08 12.a4 Nf4 13.Ne4 Ng6 14.Be3 h6 15.Nc5 Bxc5 16.Bxc5 Rfd8 17.Nd2 Na5 18.Qg4 Qxg4 19.hxg4 Nxb3 20.Nxb3 Bd5 21.Nc1 f6 22.axb5 axb5 23.Ne2 Kf7 24.Nc3 Nf4 25.Rxa8 Bxa8 26.f3 Ne6 27.b4 Nxc5
30/39+ 00:43 44 881 464 1 034 206 +0,16 12.a4
30/40+ 00:44 45 793 731 1 034 208 +0,25 12.a4
30/40 00:44 46 460 721 1 032 506 +0,15 12.a4 Nf4 13.Ne4 Ng6 14.Be3 h6 15.Nc5 Bxc5 16.Bxc5 Rfd8 17.Nd2 Na5 18.Qg4 Nxb3 19.Qxd7 Rxd7 20.Nxb3 Bd5 21.axb5 axb5 22.Rxa8+ Bxa8 23.f3 Bd5 24.Nc1 Rd8 25.Ne2 f6 26.Nc3 c6 27.Bb6 Rd7 28.Be3 Nf8

[MikeGL]

While commenting a game from yesterday at candidates, Yannick Gozzoli pointed that 12.Nxe5 is a mistake because 12. Nxe5 Nxe5 13. Rxe5 Nf4!! 14. Nf3 Nxg2!! :

[pgn][Event "FIDE Candidates 2020"]
[Site "Yekaterinburg RUS"]
[Date "2020.03.22"]
[Round "5.2"]
[White "Grischuk, Alexander"]
[Black "Ding, Liren"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2777"]
[BlackElo "2805"]
[ECO "C88"]
[Opening "Ruy Lopez"]
[Variation "closed, 7...O-O"]
[WhiteFideId "4126025"]
[BlackFideId "8603677"]
[EventDate "2020.03.17"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. h3
Bb7 9. d3 d5 10. exd5 Nxd5 11. Nbd2 Qd7 12. a4 f6 13. Ne4 Na5 14. Ba2 c5 15. Be3
Rfc8 16. axb5 axb5 17. Nxc5 Rxc5 18. b4 Rcc8 19. bxa5 Kh8 20. Bd2 Nb4 21. Bb3
Bd5 22. Bxd5 Qxd5 23. Rc1 Nc6 24. c4 bxc4 25. Rxc4 Nxa5 26. Rxc8+ Rxc8 27. d4
Nc6 28. dxe5 Nxe5 29. Nxe5 fxe5 30. Qg4 Rd8 31. Be3 Bf6 32. Rc1 Qd7 33. Qh5 Qe8
34. Qf3 Rc8 35. Rd1 Rd8 36. Rc1 Rc8 37. Rb1 Rb8 38. Re1 Qg6 39. Ba7 Rc8 40. Qb7
Qc2 41. Be3 Qc6 42. Qb4 h5 43. Bc1 Qc2 44. Be3 Rd8 45. Qb1 Qxb1 46. Rxb1 Kh7 47.
g4 hxg4 48. hxg4 Rd6 49. Kg2 Kg6 50. Kf3 Bg5 51. Ke4 Bxe3 52. fxe3 Re6 53. Rb7
Re8 54. Ra7 1/2-1/2[/pgn]

Thanks for latest engine lines for this variation.
5 years Prior to this candidates game,
12...Nxg2! was played by GM So of USA as black against Ivanchuk, where chucky was easily crushed while having white pieces.

https://www.chessgames.com/perl/chessgame?gid=1782735

In comments section of that page, it was mentioned the move already appeared in ICCF correspondence game.
Post-game interview, GM So said he picked up the line from New In Chess section that is written by GM Giri.

Below is the comment of cro777 on the above chessgames.com page:

"Levon Aronian fired his seconds for not finding 13...Nf4!

Wesley So: "As everybody knows against Vassily you cannot prepare."
Wesley opted for Aronian's novelty 11...Qd7 in an Anti-Marshal with
8.h3 and 9.d3. Aronian introduced this move (instead of 11...f6 or 11...Nf4 which are main options)
in the game against Anand at the Candidates tournament (March 2014).

Anish Giri, annotating the game Anand - Aronian in New in Chess Magazine (3/2014), recommended 13...Nf4 (Aronian in the aforementioned game played 13...Nf6) followed by the knight sacrifice 14...Nxg2 and 15...a5 with the double threat of winning the bishop and ...Ra6.

Wesley was aware of this idea by reading Giri's article.
White has nothing better than 16.a4 which leads to a forced draw with correct play by both sides, as occurred in the game Guliyev - Gustafsson at the German Chess League (Schachbundesliga, November 2014).

At the 32th International Chess Open of Andorra (July 2014) in the game Jolly - Gozzoli White tried 16.c4 and lost.
"


So I think it really pays to be updated on the latest theory and analysis of super GM's with engines, when you're a full time chess player.

[Master Om]

While commenting a game from yesterday at candidates, Yannick Gozzoli pointed that 12.Nxe5 is a mistake because 12. Nxe5 Nxe5 13. Rxe5 Nf4!! 14. Nf3 Nxg2!! :

[pgn][Event "FIDE Candidates 2020"]
[Site "Yekaterinburg RUS"]
[Date "2020.03.22"]
[Round "5.2"]
[White "Grischuk, Alexander"]
[Black "Ding, Liren"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2777"]
[BlackElo "2805"]
[ECO "C88"]
[Opening "Ruy Lopez"]
[Variation "closed, 7...O-O"]
[WhiteFideId "4126025"]
[BlackFideId "8603677"]
[EventDate "2020.03.17"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. h3
Bb7 9. d3 d5 10. exd5 Nxd5 11. Nbd2 Qd7 12. a4 f6 13. Ne4 Na5 14. Ba2 c5 15. Be3
Rfc8 16. axb5 axb5 17. Nxc5 Rxc5 18. b4 Rcc8 19. bxa5 Kh8 20. Bd2 Nb4 21. Bb3
Bd5 22. Bxd5 Qxd5 23. Rc1 Nc6 24. c4 bxc4 25. Rxc4 Nxa5 26. Rxc8+ Rxc8 27. d4
Nc6 28. dxe5 Nxe5 29. Nxe5 fxe5 30. Qg4 Rd8 31. Be3 Bf6 32. Rc1 Qd7 33. Qh5 Qe8
34. Qf3 Rc8 35. Rd1 Rd8 36. Rc1 Rc8 37. Rb1 Rb8 38. Re1 Qg6 39. Ba7 Rc8 40. Qb7
Qc2 41. Be3 Qc6 42. Qb4 h5 43. Bc1 Qc2 44. Be3 Rd8 45. Qb1 Qxb1 46. Rxb1 Kh7 47.
g4 hxg4 48. hxg4 Rd6 49. Kg2 Kg6 50. Kf3 Bg5 51. Ke4 Bxe3 52. fxe3 Re6 53. Rb7
Re8 54. Ra7 1/2-1/2[/pgn]

[d]r4rk1/1bpqbppp/p1n5/1p1np3/8/1B1P1N1P/PPPN1PP1/R1BQR1K1 w - - 2 12

But even after 1 billions nodes Stockfish still thinks that 12.Nxe5?? is good for white
Not every run but very often, Stockfish can't refute 12.Nxe5??

Code: Select all

Stockfish_20032021_x64_modern:
...
 22/43	00:04	 29 900 094	7 357 306	+0,24	12.Ne4 Rad8 13.Ng3 f6 14.c3 Na5 15.Bc2 c5 16.a4 b4 17.d4 bxc3 18.dxe5 Qc7 19.Qd3 g6 20.Nf5 Nb4 21.Nxe7+ Qxe7 22.Qxc3 Bxf3 23.gxf3 Nxc2 24.Qxc2 fxe5 25.f4 Nc6 26.Ra3 Nd4 27.Qc4+ Qe6 28.Qxe6+ Nxe6 29.fxe5
 23/39-	00:04	 36 447 770	7 335 031	+0,15	12.Ne4 Kh8
 23/39+	00:05	 38 062 850	7 321 186	+0,24	12.Ne4
 23/39	00:05	 39 568 235	7 315 258	+0,25	12.Ne4 Kh8 13.a4 b4 14.d4 exd4 15.a5 Rae8 16.Qd3 Nf6 17.Bd2 h6 18.Ba4 Rd8 19.Ng3 Rfe8 20.Ne5 Qd5 21.Nxc6 Bxc6 22.Bxc6 Qxc6 23.Nf5 Qc5 24.Nxe7 Rxe7 25.Rxe7 Qxe7
 24/27-	00:05	 40 345 966	7 314 352	+0,15	12.Ne4 Kh8
 24/32+	00:05	 41 099 153	7 315 619	+0,25	12.Ne4
 24/37	00:06	 44 490 985	7 317 596	+0,33	12.Ne4 Kh8 13.a4 b4 14.a5 Rad8 15.Ba4 f6 16.c4 bxc3 17.bxc3 Qc8 18.d4 exd4 19.cxd4 Nxa5 20.Qc2 Bb4 21.Bd2 Bxd2 22.Nexd2 Nb4 23.Qc3 Nac6 24.Bb3 a5
 25/16-	00:06	 49 225 042	7 285 043	+0,23	12.Ne4 Kh8
 25/20-	00:07	 57 592 222	7 243 393	+0,13	12.Ne4 Kh8
 25/36+	00:08	 59 407 443	7 245 693	+0,23	12.Ne4
 25/39	00:08	 60 222 963	7 240 947	+0,32	12.Ne4 Kh8 13.Ng3 Nf4 14.Bxf4 exf4 15.Ne4 Nd4 16.Nxd4 Qxd4 17.c3 Qd8 18.Nd2 Qd6 19.Qh5 g6 20.Qh6 c5 21.Ne4 Qc7 22.d4 cxd4 23.cxd4 Rad8 24.Rad1 Bd5 25.Bxd5
 26/39-	00:09	 66 645 571	7 275 717	+0,22	12.Ne4 Kh8
 26/39-	00:10	 79 762 859	7 290 937	+0,12	12.Ne4 Kh8
 26/40+	00:11	 84 492 241	7 302 069	+0,22	12.Ne4
 26/44	00:11	 85 832 402	7 303 642	+0,16	12.Ne4 Kh8 13.Ng3 Nf4 14.Bxf4 exf4 15.Ne4 Nd4 16.Nxd4 Qxd4 17.c3 Qd8 18.Nd2 Qd6 19.d4 c5 20.Qe2 Rae8 21.Nf3 Qf6 22.Rad1 Bc6 23.Bc2 Bd6 24.Ne5 Bxe5 25.dxe5 Qg5 26.Qg4 Qxg4 27.hxg4
 27/39-	00:14	 109 324 721	7 295 610	+0,06	12.Ne4 Kh8
 27/40+	00:15	 112 256 786	7 300 304	+0,16	12.Ne4
 27/41	00:16	 119 299 533	7 294 822	+0,13	12.Ne4 Kh8 13.Ng3 Nf4 14.Bxf4 exf4 15.Ne4 Nd4 16.Nxd4 Qxd4 17.c3 Qd8 18.Nd2 Qd6 19.a4 c5 20.axb5 axb5 21.Rxa8 Bxa8 22.Qe2 Qg6 23.Qg4 Bf6 24.Qxg6 fxg6 25.Ne4 Bxe4 26.dxe4 Be5 27.Rd1 g5 28.Be6 g6 29.Bd7 b4 30.cxb4
 28/47+	00:17	 124 508 400	7 295 699	+0,23	12.Ne4
 28/47+	00:17	 127 982 320	7 294 518	+0,32	12.Ne4
 28/47	00:20	 148 747 985	7 289 781	+0,17	12.Ne4 Rad8 13.a4 b4 14.Ng3 f6 15.d4 Nxd4 16.Nxd4 exd4 17.Qxd4 Kh8 18.Ne4 Rfe8 19.Bd2 Qc6 20.Qc4 Qxc4 21.Bxc4 a5 22.Bb5 Rf8 23.c4 bxc3 24.bxc3 Nb6 25.Rab1 Bd5 26.Ng3 Nc4 27.Rxe7
 29/39-	00:26	 193 100 065	7 306 370	+0,07	12.Ne4 Kh8
 29/43+	00:26	 195 524 096	7 304 396	+0,17	12.Ne4
 29/43	00:30	 222 090 245	7 306 080	+0,06	12.Ne4 Kh8 13.a4 b4 14.a5 Rad8 15.Ba4 f6 16.c4 bxc3 17.bxc3 Qc8 18.Bd2 Nxa5 19.Bc2 Nc6 20.Ng3 f5 21.Bb3 f4 22.Ne4 Qf5 23.Bc2 Nb6 24.Kh2 Qh5 25.Qb1 Rb8 26.d4 Nd5 27.Qa2 exd4 28.cxd4
 30/47+	00:40	 298 154 489	7 294 656	+0,15	12.Nxe5
 30/47+	00:41	 303 526 743	7 299 298	+0,25	12.Nxe5
 30/49	00:41	 306 422 307	7 300 462	+0,18	12.Nxe5 Nxe5 13.Rxe5 Nf6 14.Re1 Rae8 15.Ne4 Bxe4 16.dxe4 Qxd1 17.Rxd1 Bc5 18.Bd2 Rxe4 19.Kf1 Re7 20.Bg5 Rfe8 21.Bxf6 gxf6 22.Rd5 Bd6 23.Rad1 Rb8 24.Rf5 Kg7 25.c3 Rbe8 26.a4 bxa4 27.Bxa4 Rb8 28.b3 h6 29.Rf3 Be5
 31/49-	00:51	 370 967 343	7 259 492	+0,08	12.Nxe5 Nxe5
 31/49	00:51	 376 630 255	7 262 162	+0,12	12.Nxe5 Nxe5 13.Rxe5 Nf6 14.Re1 Rae8 15.Ne4 Nxe4 16.dxe4 Qxd1 17.Rxd1 Bxe4 18.Be3 Bd6 19.a4 Rb8 20.a5 Rfe8 21.Rd2 h6 22.c3 Re7 23.Rad1 Bc6 24.Bd5 Bxd5 25.Rxd5 Rbe8 26.Kf1 Re6 27.b4 Kh7 28.Bc5 Be5 29.Bd4 Bd6 30.Be3 Be5 31.R5d3 f5 32.Kg1 f4 33.Bc5
 32/52+	00:53	 388 302 935	7 247 702	+0,22	12.Nxe5
 32/52	00:54	 390 817 599	7 229 731	+0,15	12.Nxe5 Nxe5 13.Rxe5 Nf6 14.Re1 Rae8 15.Ne4 Nxe4 16.dxe4 Qxd1 17.Rxd1 Bxe4 18.Be3 Bd6 19.a4 Rb8 20.a5 Rfe8 21.Rd2 h6 22.c3 Re7 23.Rad1 Bc6 24.Bd5 Bxd5 25.Rxd5 Rbe8 26.Kf1 Re6 27.b4 f6 28.Bc5 Be5 29.Bd4 Bd6 30.Be3 Be5 31.Rc5 R8e7 32.c4 Bd6 33.Rc6 Bxb4 34.cxb5 Rxc6 35.bxc6
 33/54+	01:04	 465 143 116	7 227 208	+0,24	12.Ne4
 33/54	01:09	 500 498 476	7 225 953	+0,21	12.Ne4 Kh8 13.a4 b4 14.a5 Rad8 15.Ba4 f6 16.d4 Qc8 17.c4 bxc3 18.bxc3 exd4 19.cxd4 Nxa5 20.Qe2 Bb4 21.Bd2 Bxd2 22.Qxd2 Nc4 23.Qc1 Ndb6 24.Bb3 Bd5 25.Nc5 Bxf3 26.Bxc4 Nxc4 27.Qxc4 Bd5 28.Qd3 Rfe8 29.Rxe8+ Rxe8 30.Nxa6 Qd7 31.Nb4 Qd6 32.Qd2 Qd7
 34/46+	01:13	 531 642 073	7 235 489	+0,31	12.Ne4
 34/50	01:20	 582 949 316	7 262 989	+0,14	12.Nxe5 Nxe5 13.Rxe5 Nf6 14.Re1 Rae8 15.Ne4 Nxe4 16.dxe4 Qxd1 17.Rxd1 Bxe4 18.Be3 c5 19.c4 Bc6 20.cxb5 axb5 21.a4 c4 22.axb5 Bxb5 23.Ba4 Bxa4 24.Rxa4 Rb8 25.Rd7 Bf6 26.Rxc4 Bxb2 27.g3 Rfd8 28.Rxd8+ Rxd8 29.Kh2 Bf6 30.Kg2 Be5 31.f4 Bd6 32.Rc6
 35/62+	01:26	 626 446 197	7 284 258	+0,24	12.Nxe5
 35/62+	01:27	 635 006 411	7 295 569	+0,34	12.Nxe5
 35/62	01:31	 668 111 798	7 315 760	+0,25	12.Nxe5 Nxe5 13.Rxe5 Nf6 14.Re1 Rae8 15.Ne4 Nxe4 16.dxe4 Qxd1 17.Rxd1 Bxe4 18.Be3 Bg6 19.c3 Rd8 20.Bd5 h6 21.Bc6 f6 22.Bf4 Rxd1+ 23.Rxd1 Rd8 24.Rxd8+ Bxd8 25.f3 Bf7 26.b3 Be6 27.Bg3 Kf7 28.Bb7 a5 29.Bc6 a4 30.Bxb5 axb3 31.axb3 Bxb3 32.Kf2 g5 33.Ke3
 36/55-	01:37	 705 995 145	7 277 100	+0,15	12.Nxe5 Nxe5
 36/60+	01:38	 717 971 463	7 260 671	+0,25	12.Nxe5
 36/60	01:42	 740 053 972	7 239 320	+0,13	12.Nxe5 Nxe5 13.Rxe5 Nf6 14.Re1 Rae8 15.Ne4 Nxe4 16.dxe4 Qxd1 17.Rxd1 Bxe4 18.Be3 c5 19.c4 Rd8 20.Rac1 Rxd1+ 21.Rxd1 Rb8 22.Bf4 Rb7 23.Bd6 Bf8 24.Be5 Be7 25.a4 bxc4 26.Bxc4 Bc2 27.Re1 Bxa4 28.Bxa6 Ra7 29.Bc4 Bc6 30.f3 Kf8 31.b3 Be8 32.Kf2 f6 33.Bc3 Bf7 34.Re2 Rb7 35.Bxf7 Kxf7
 37/55+	01:47	 774 052 922	7 224 282	+0,23	12.Nxe5
 37/56+	01:49	 791 599 904	7 214 793	+0,32	12.Nxe5
 37/56	01:51	 805 595 230	7 207 035	+0,36	12.Nxe5 Nxe5 13.Rxe5 Nf6 14.Re1 Rae8 15.Ne4 Nxe4 16.dxe4 Qxd1 17.Rxd1 Bxe4 18.Be3 c5 19.c4 Rd8 20.Rac1 Rxd1+ 21.Rxd1 Rb8 22.Bf4 Rb7 23.Bd6 Bf8 24.Be5 Be7 25.a4 Kf8 26.axb5 f6 27.Bc3 axb5 28.cxb5 Rxb5 29.Bc4 Rb8 30.f3 Bg6 31.Kf2 Rd8 32.Rxd8+ Bxd8 33.Ke2 Be7 34.g4 Bd6 35.Ke3 Ke7
 38/57-	02:15	 970 889 886	7 150 515	+0,26	12.Nxe5 Nxe5
 38/57-	02:25	1 039 595 084	7 156 640	+0,16	12.Nxe5 Nxe5
 38/57	02:39	1 141 285 295	7 166 446	+0,13	12.Nxe5 Nxe5 13.Rxe5 Nf6 14.Re1 Rae8 15.Ne4 Nxe4 16.dxe4 Qxd1 17.Rxd1 Bxe4 18.Be3 c5 19.c4 Rd8 20.Rdc1 Rc8 21.Bc2 Bxc2 22.Rxc2 Rfd8 23.cxb5 axb5 24.a4 bxa4 25.Rxa4 Rb8 26.g3 Bf6 27.Rxc5 Bxb2 28.Kg2 g6 29.Ra7 Ra8 30.Rxa8 Rxa8 31.Kf3 Kg7 32.g4 Rd8 33.Rb5 Bf6 34.g5
 39/61	02:51	1 242 881 798	7 228 284	+0,13	12.Nxe5 Nxe5 13.Rxe5 Nf6 14.Re1 Rae8 15.Ne4 Nxe4 16.dxe4 Qxd1 17.Rxd1 Bxe4 18.Be3 c5 19.c4 Rd8 20.Rac1 Rxd1+ 21.Rxd1 Rb8 22.Rd7 Rb7 23.Rd2 h6 24.a4 Bc6 25.cxb5 axb5 26.axb5 Rxb5 27.Ba4 Rb6 28.Bxc6 Rxc6 29.g4 c4 30.Rc2 Bf6 31.b4 c3 32.b5 Rd6 33.f3 Rd1+ 34.Kf2 Rb1 35.b6 Rb2 36.Re2 Rb1 37.Kg2 Rb2
 40/56+	02:53	1 255 863 301	7 233 610	+0,23	12.Nxe5

My SF Nodchip NNUE version 19/07/20 which i think the best last SF yet, is stuck at a4!! and not even thinking Nxe5???

Code: Select all

 [+0.24]  d=45  1.a4 Rae8 2.axb5 axb5 3.Ne4 Kh8 4.c4 bxc4 5.dxc4 Nf6 6.Nxf6 Qxd1 7.Rxd1 Bxf6 8.Be3 e4 9.Nd4 Rb8 10.Nxc6 Bxc6 11.Ba4 Bxa4 12.Rxa4 Rxb2 13.c5 Re8 14.Rd7 Rb1 15.Kh2 Kg8 16.g3 Be5 17.Rxe4 Kf8 18.Rc4 Rbb8 19.c6 Bd6 20.Bc5 Bxc5 21.Rxc5 Re7 22.Kg2 Rxd7 23.cxd7 Rd8 24.Rxc7 f6 25.Rc8 Ke7 26.Rxd8 Kxd8(0:07:21) 2423028kN
 [+0.18]  d=45  1.a4 Nf4 2.Ne4 Ng6 3.axb5 axb5 4.Rxa8 Bxa8 5.Bg5 h6 6.Bxe7 Qxe7 7.g3 Kh8 8.c3 f5 9.Neg5 Na5 10.h4 f4 11.h5 fxg3 12.fxg3 Nxb3 13.hxg6 Qc5 14.d4 exd4 15.Nf7 Kg8 16.Qxb3 dxc3 17.Kg2 Bxf3 18.Kxf3 Qc6 19.Ke3 Re8 20.Kf2 Qf6 21.Kg2 Rxe1 22.Ng5(0:06:30) 2132507kN
 [+0.09]  d=45  1.a4 Nf4 2.Ne4 Ng6 3.axb5 axb5 4.Rxa8 Bxa8 5.Bg5 h6 6.Bxe7 Qxe7 7.g3 Kh8 8.c3 f5 9.Neg5 Na5 10.h4 f4 11.h5 fxg3 12.fxg3 Nxb3 13.hxg6 Qc5 14.d4 exd4 15.Nf7 Kg8 16.Qxb3 dxc3 17.Kg2 Bxf3 18.Kxf3 Qc6 19.Ke3 Re8 20.Kf2 Qf6 21.Kg2 Rxe1 22.Ng5 Kh8(0:06:19) 2072214kN
 [+0.00]  d=44  1.a4 Nf4 2.Ne4 Ng6 3.axb5 axb5 4.Rxa8 Bxa8 5.Bg5 h6 6.Bxe7 Qxe7 7.g3 Kh8 8.c3 f5 9.Neg5 Na5 10.h4 f4 11.h5 fxg3 12.fxg3 Nxb3 13.hxg6 Qc5 14.d4 exd4 15.Nf7 Kg8 16.Qxb3 dxc3 17.Kg2 Bxf3 18.Kxf3 Qc6 19.Ke3 Re8 20.Kf2 Qf6 21.Kg2 Rxe1 22.Ng5 Kh8 23.Nf7(0:05:59) 1955290kN
 [+0.00]  d=43  1.a4 Nf4 2.Ne4 Ng6 3.axb5 axb5 4.Rxa8 Bxa8 5.Bg5 h6 6.Bxe7 Qxe7 7.g3 Kh8 8.c3 f5 9.Neg5 Na5 10.h4 f4 11.h5 fxg3 12.fxg3 Nxb3 13.hxg6 Qc5 14.d4 exd4 15.Nf7 Kg8 16.Qxb3 dxc3 17.Kg2 Bxf3 18.Kxf3 Qc6 19.Ke3 Re8 20.Kf2 Qf6 21.Kg2 Rxe1 22.Ng5 Kh8 23.Nf7(0:05:57) 1942328kN
 [+0.18]  d=43  1.a4 Nf4 2.Ne4 Ng6 3.axb5 axb5 4.Rxa8 Bxa8 5.Nfg5 h6 6.Qh5 hxg5 7.Qxg6 Nd4 8.Nxg5 Bxg5 9.Qxg5 Nxb3 10.cxb3 f6 11.Qg6 Bd5 12.Qg3 Be6 13.Kh2 Rd8 14.f4 exf4 15.Bxf4 c6 16.b4 Bf5 17.Re3 Re8 18.Rf3 Re2 19.Bh6 Bxh3 20.Qxh3 Qxh3 21.Kxh3 gxh6 22.Rxf6 Kh7 23.Rxc6 Rxb2 24.Kg3 Rxb4 25.Rb6 Rb3 26.Rb7 Kg6 27.Kf4(0:05:56) 1934756kN
 [+0.09]  d=43  1.a4 Nf4 2.Ne4 Ng6 3.axb5 axb5 4.Rxa8 Bxa8 5.Nfg5 h6 6.Qh5 hxg5 7.Qxg6 Nd4 8.Nxg5 Bxg5 9.Qxg5 Nxb3 10.cxb3 f6 11.Qg6 Bd5 12.Qg3 Be6 13.Kh2 Rd8 14.f4 exf4 15.Bxf4 c6 16.b4 Bf5 17.Re3 Re8 18.Rf3 Re2 19.Bh6 Bxh3 20.Qxh3 Qxh3 21.Kxh3 gxh6 22.Rxf6 Kh7 23.Rxc6 Rxb2 24.Kg3 Rxb4 25.Rb6 Rb3 26.Rb7 Kg6 27.Kf4 Rxd3(0:04:40) 1491234kN
 [+0.00]  d=42  1.a4 Nf4 2.Ne4 Ng6 3.axb5 axb5 4.Rxa8 Bxa8 5.Nfg5 h6 6.Qh5 hxg5 7.Qxg6 Nd4 8.Nxg5 Bxg5 9.Qxg5 Nxb3 10.cxb3 f6 11.Qg6 Bd5 12.Qg3 Be6 13.Kh2 Rd8 14.f4 exf4 15.Bxf4 c6 16.b4 Bf5 17.Re3 Re8 18.Rf3 Re2 19.Bh6 Bxh3 20.Qxh3 Qxh3 21.Kxh3 gxh6 22.Rxf6 Kh7 23.Rxc6 Rxb2 24.Kg3 Rxb4 25.Rb6 Rb3 26.Rb7 Kg6 27.Kf4 Rxd3 28.Rxb5(0:04:21) 1372406kN
 [+0.00]  d=41  1.a4 Nf4 2.Ne4 Ng6 3.axb5 axb5 4.Rxa8 Bxa8 5.Nfg5 h6 6.Qh5 hxg5 7.Qxg6 Nd4 8.Nxg5 Bxg5 9.Qxg5 Nxb3 10.cxb3 f6 11.Qg6 Bd5 12.Qg3 Rd8 13.Kh2 Be6 14.f4 exf4 15.Bxf4 c6 16.b4 Bf7 17.Re3 Re8 18.Re4 Bd5 19.Rxe8 Qxe8 20.Bh6 Qd7 21.Be3 Qf5 22.Bh6(0:03:15) 1169469kN
 [+0.00]  d=40  1.a4 Nf4 2.Ne4 Ng6 3.Nfg5 Bxg5 4.Nxg5 h6 5.Qh5 Qf5 6.Qf3 Qd7 7.axb5 axb5 8.Rxa8 Bxa8 9.Qh5 hxg5 10.Qxg6 Nd4 11.Qxg5 Nxb3 12.cxb3 f6 13.Qg6 Rd8 14.Re3 Qf7 15.Qf5 Qd7 16.Qxd7 Rxd7 17.b4 g5 18.Bd2 Bd5 19.Kf1 Kf7 20.Be1 Ba2 21.Rg3 Be6 22.Bc3 Bf5 23.Ke2 Rd8 24.Rf3 Ke6 25.Re3 Kf7 26.f3 c6(0:02:57) 1069590kN
 [+0.00]  d=39  1.a4 Nf4 2.Ne4 Ng6 3.Nfg5 Bxg5 4.Nxg5 h6 5.Qh5 Qf5 6.Qf3 Qd7 7.axb5 axb5 8.Rxa8 Bxa8 9.Qh5 hxg5 10.Qxg6 Nd4 11.Qxg5 Nxb3 12.cxb3 f6 13.Qg6 Rd8 14.Re3 Qf7 15.Qf5 Qd7 16.Qxd7 Rxd7 17.b4 g5 18.Bd2 Bd5 19.Kf1 Kf7 20.Be1 Ba2 21.Rg3 Be6 22.Bc3 Bf5 23.Ke2 Rd8(0:02:45) 998799kN
 [+0.15]  d=39  1.a4 Nf4 2.Ne4 Ng6 3.Nfg5 Bxg5 4.Nxg5 h6 5.Qh5 Nd4 6.Qxg6 hxg5 7.Qxg5 Nxb3 8.cxb3 f6 9.Qg3 Rad8 10.Rd1 Qd5 11.Be3 Rf7 12.Rd2 Qxb3 13.axb5 Qxb5 14.d4 Rfd7 15.Rad1 Qb3 16.Qg4 exd4 17.Bxd4 Qf7 18.f3 a5 19.Bc3 Rxd2 20.Rxd2 Rd5 21.Qc4 Rxd2 22.Qxf7 Kxf7 23.Bxd2(0:02:37) 962813kN
 [+0.05]  d=39  1.a4 Nf4 2.Ne4 Ng6 3.Nfg5 Bxg5 4.Nxg5 h6 5.Qh5 Nd4 6.Qxg6 hxg5 7.Qxg5 Nxb3 8.cxb3 f6 9.Qg3 Rad8 10.Rd1 Qd5 11.Be3 Rf7 12.Rd2 Qxb3 13.axb5 Qxb5 14.d4 Rfd7 15.Rad1 Qb3 16.Qg4 exd4 17.Bxd4 Qf7 18.f3 a5 19.Bc3 Rxd2 20.Rxd2 Rd5 21.Qc4 Rxd2 22.Qxf7 Kxf7 23.Bxd2 a4(0:02:32) 929834kN
 [+0.15]  d=38  1.a4 Nf4 2.Ne4 Ng6 3.Nfg5 Bxg5 4.Nxg5 h6 5.Qh5 Nd4 6.Qxg6 hxg5 7.Qxg5 Nxb3 8.cxb3 f6 9.Qg3 Rad8 10.Rd1 Qd5 11.Be3 Rf7 12.Rd2 Qxb3 13.axb5 Qxb5 14.d4 Rfd7 15.Rad1 Qb3 16.Qg4 exd4 17.Bxd4 Qf7 18.f3 a5 19.Bc3 Rxd2 20.Rxd2 Rd5 21.Qc4 Rxd2 22.Qxf7 Kxf7 23.Bxd2 a4 24.h4(0:02:27) 897139kN
 [+0.11]  d=38  1.a4 Nf4 2.Ne4 Ng6 3.h4 Qg4 4.g3 Na5 5.Ba2 h6 6.Nh2 Qxd1 7.Rxd1 Rfd8 8.Be3 bxa4 9.Nf3 Nc6 10.Bc5 Bd6 11.Nfd2 Nd4 12.c3 Nb3 13.Bxb3 axb3 14.Nxb3 Rab8 15.Na5 Bxe4 16.Bxd6 Rxd6 17.dxe4 Rxd1 18.Rxd1 Rxb2 19.Rd7 Re2 20.Rxc7 h5 21.Ra7 Rc2 22.Rxa6 Rc1 23.Kg2 Rxc3 24.Nc6 Rc5(0:02:26) 890133kN
 [+0.01]  d=38  1.a4 Nf4 2.Ne4 Ng6 3.h4 Qg4 4.g3 Na5 5.Ba2 h6 6.Nh2 Qxd1 7.Rxd1 Rfd8 8.Be3 bxa4 9.Nf3 Nc6 10.Bc5 Bd6 11.Nfd2 Nd4 12.c3 Nb3 13.Bxb3 axb3 14.Nxb3 Rab8 15.Na5 Bxe4 16.Bxd6 Rxd6 17.dxe4 Rxd1 18.Rxd1 Rxb2 19.Rd7 Re2 20.Rxc7 h5 21.Ra7 Rc2 22.Rxa6 Rc1 23.Kg2 Rxc3 24.Nc6 Rc5 25.Ra8(0:02:21) 860110kN
 [+0.11]  d=37  1.a4 Nf4 2.Ne4 Ng6 3.h4 Qg4 4.g3 Na5 5.Ba2 h6 6.Nh2 Qxd1 7.Rxd1 Rfd8 8.Be3 bxa4 9.Nf3 Nc6 10.Bc5 Bd6 11.Nfd2 Nd4 12.c3 Nb3 13.Bxb3 axb3 14.Nxb3 Rab8 15.Na5 Bxe4 16.Bxd6 Rxd6 17.dxe4 Rxd1 18.Rxd1 Rxb2 19.Rd7 Re2 20.Rxc7 h5 21.Ra7 Rc2 22.Rxa6 Rc1 23.Kg2 Rxc3 24.Nc6 Rc5 25.Ra8 Kh7(0:02:14) 818115kN
 [+0.19]  d=37  1.a4 Nf4 2.Ne4 Ng6 3.Bg5 h6 4.Bxe7 Qxe7 5.c3 Rae8 6.d4 exd4 7.cxd4 Qd8 8.Nc5 Rxe1 9.Nxe1 Ba8 10.d5 bxa4 11.Rxa4 Nce7 12.Nxa6 Nxd5 13.Bxd5 Bxd5 14.Nxc7 Bc6 15.Qxd8 Rxd8 16.Ra6 Bb7 17.Ra7(0:01:48) 659701kN
 [+0.10]  d=37  1.a4 Nf4 2.Ne4 Ng6 3.Bg5 h6 4.Bxe7 Qxe7 5.c3 Rae8 6.d4 exd4 7.cxd4 Qd8 8.Nc5 Rxe1 9.Nxe1 Ba8 10.d5 bxa4 11.Rxa4 Nce7 12.Nxa6 Nxd5 13.Bxd5 Bxd5 14.Nxc7 Bc6 15.Qxd8 Rxd8 16.Ra6 Bb7 17.Ra7 Bc6(0:01:44) 633237kN
 [+0.01]  d=36  1.a4 Nf4 2.Ne4 Ng6 3.Bg5 h6 4.Bxe7 Qxe7 5.c3 Rae8 6.d4 exd4 7.cxd4 Qd8 8.Nc5 Rxe1 9.Nxe1 Ba8 10.d5 bxa4 11.Rxa4 Nce7 12.Nxa6 Nxd5 13.Bxd5 Bxd5 14.Nxc7 Bc6 15.Qxd8 Rxd8 16.Ra6 Bb7 17.Ra7 Bc6 18.Ra1(0:01:41) 618681kN

few moments later....

Code: Select all

 [+0.16]  d=49  1.Nf1 Nb6 2.c3 Rad8 3.Nxe5 Nxe5 4.Rxe5 Bf6 5.Re1 Qxd3 6.Qg4 Na4 7.Bxa4 bxa4 8.Qxa4 h5 9.Qf4 Rfe8 10.Be3 Be5 11.Qh4 Qd5 12.f3 Bc6 13.Bd4 Bxd4 14.Qxd4 Qxd4 15.cxd4 Rxd4 16.b3 Rxe1 17.Rxe1 Bb5 18.Ng3 h4 19.Ne4 a5 20.Rc1 c6 21.a4 Bd3 22.Ng5 Rd5 23.f4 f6 24.Nf3 Be4 25.Nxh4 Rd3 26.Kh2 Rxb3 27.Rc5 Ra3 28.Rxa5 Kh7 29.Ra7(0:27:43) 9304483kN
 [+0.34]  d=49  1.Nf1 Nb6 2.c3 Rad8 3.Nxe5 Nxe5 4.Rxe5 Bf6 5.Re1 Qxd3 6.Qg4 Na4 7.Bxa4 bxa4 8.Qxa4 h5 9.Qf4 Rfe8 10.Be3 Be5 11.Qh4 Qd5 12.f3 Bc6 13.Bd4 Bxd4 14.Qxd4 Qxd4 15.cxd4 Rxd4 16.b3 Rxe1 17.Rxe1 Bb5 18.Ng3 h4 19.Ne4 a5 20.Rc1 c6 21.a4 Bd3 22.Ng5 Rd5 23.f4 f6 24.Nf3 Be4 25.Nxh4 Rd3 26.Kh2 Rxb3 27.Rc5 Ra3 28.Rxa5 Kh7 29.Ra7 c5(0:27:02) 9074003kN
 [+0.25]  d=49  1.Nf1 Nb6 2.c3 Rad8 3.Nxe5 Nxe5 4.Rxe5 Bf6 5.Re1 Qxd3 6.Qg4 Na4 7.Bxa4 bxa4 8.Qxa4 h5 9.Qf4 Rfe8 10.Be3 Be5 11.Qh4 Qd5 12.f3 Bc6 13.Bd4 Bxd4 14.Qxd4 Qxd4 15.cxd4 Rxd4 16.b3 Rxe1 17.Rxe1 Bb5 18.Ng3 h4 19.Ne4 a5 20.Rc1 c6 21.a4 Bd3 22.Ng5 Rd5 23.f4 f6 24.Nf3 Be4 25.Nxh4 Rd3 26.Kh2 Rxb3 27.Rc5 Ra3 28.Rxa5 Kh7 29.Ra7 c5 30.Rc7(0:25:48) 8660480kN
 [+0.34]  d=48  1.Nf1 Nb6 2.c3 Rad8 3.Nxe5 Nxe5 4.Rxe5 Bf6 5.Re1 Qxd3 6.Qg4 Na4 7.Bxa4 bxa4 8.Qxa4 h5 9.Qf4 Rfe8 10.Be3 Be5 11.Qh4 Qd5 12.f3 Bc6 13.Bd4 Bxd4 14.Qxd4 Qxd4 15.cxd4 Rxd4 16.b3 Rxe1 17.Rxe1 Bb5 18.Ng3 h4 19.Ne4 a5 20.Rc1 c6 21.a4 Bd3 22.Ng5 Rd5 23.f4 f6 24.Nf3 Be4 25.Nxh4 Rd3 26.Kh2 Rxb3 27.Rc5 Ra3 28.Rxa5 Kh7 29.Ra7 c5 30.Rc7 Rxa4(0:25:38) 8609142kN
 [+0.51]  d=48  1.Nf1 Nb6 2.c3 a5 3.a3 Rad8 4.Nxe5 Nxe5 5.Rxe5 a4 6.Ba2 Bf6 7.Re1 Qxd3 8.Qxd3 Rxd3 9.Bf4 Rd7 10.Rad1 Rxd1 11.Rxd1 Rc8 12.Ne3 h5 13.Bb1 g6 14.Bd3 Bc6 15.Nc2 Nd5 16.Bh2 Be8 17.Be4 Nb6 18.Ne3 c6 19.Bd6 Bg7 20.f4 f5 21.Bf3 Rd8 22.g4 hxg4 23.hxg4 fxg4 24.Bxg4 Bf7 25.Bc5 Rxd1 26.Bxd1 Nc4 27.Nxc4 Bxc4 28.Bc2 Kf7 29.Bd6(0:22:11) 7452328kN
 [+0.32]  d=48  1.Nf1 Nb6 2.c3 a5 3.a3 Rad8 4.Nxe5 Nxe5 5.Rxe5 a4 6.Ba2 Bf6 7.Re1 Qxd3 8.Qxd3 Rxd3 9.Bf4 Rd7 10.Rad1 Rxd1 11.Rxd1 Rc8 12.Ne3 h5 13.Bb1 g6 14.Bd3 Bc6 15.Nc2 Nd5 16.Bh2 Be8 17.Be4 Nb6 18.Ne3 c6 19.Bd6 Bg7 20.f4 f5 21.Bf3 Rd8 22.g4 hxg4 23.hxg4 fxg4 24.Bxg4 Bf7 25.Bc5 Rxd1 26.Bxd1 Nc4 27.Nxc4 Bxc4 28.Bc2 Kf7 29.Bd6 Bf6(0:20:44) 6957726kN
 [+0.18]  d=48  1.Nf1 Nb6 2.c3 a5 3.a3 Rad8 4.Nxe5 Nxe5 5.Rxe5 a4 6.Ba2 Bf6 7.Re1 Qxd3 8.Qxd3 Rxd3 9.Bf4 Rd7 10.Rad1 Rxd1 11.Rxd1 Rc8 12.Ne3 h5 13.Bb1 g6 14.Bd3 Bc6 15.Nc2 Nd5 16.Bh2 Be8 17.Be4 Nb6 18.Ne3 c6 19.Bd6 Bg7 20.f4 f5 21.Bf3 Rd8 22.g4 hxg4 23.hxg4 fxg4 24.Bxg4 Bf7 25.Bc5 Rxd1 26.Bxd1 Nc4 27.Nxc4 Bxc4 28.Bc2 Kf7 29.Bd6 Bf6 30.Bb4(0:20:21) 6830100kN
 [+0.09]  d=48  1.Nf1 Nb6 2.c3 a5 3.a3 Rad8 4.Nxe5 Nxe5 5.Rxe5 a4 6.Ba2 Bf6 7.Re1 Qxd3 8.Qxd3 Rxd3 9.Bf4 Rd7 10.Rad1 Rxd1 11.Rxd1 Rc8 12.Ne3 h5 13.Bb1 g6 14.Bd3 Bc6 15.Nc2 Nd5 16.Bh2 Be8 17.Be4 Nb6 18.Ne3 c6 19.Bd6 Bg7 20.f4 f5 21.Bf3 Rd8 22.g4 hxg4 23.hxg4 fxg4 24.Bxg4 Bf7 25.Bc5 Rxd1 26.Bxd1 Nc4 27.Nxc4 Bxc4 28.Bc2 Kf7 29.Bd6 Bf6 30.Bb4 Bg7(0:20:05) 6740669kN
 [+0.00]  d=47  1.Nf1 Nb6 2.c3 a5 3.a3 Rad8 4.Nxe5 Nxe5 5.Rxe5 a4 6.Ba2 Bf6 7.Re1 Qxd3 8.Qxd3 Rxd3 9.Bf4 Rd7 10.Rad1 Rxd1 11.Rxd1 Rc8 12.Ne3 h5 13.Bb1 g6 14.Bd3 Bc6 15.Nc2 Nd5 16.Bh2 Be8 17.Be4 Nb6 18.Ne3 c6 19.Bd6 Bg7 20.f4 f5 21.Bf3 Rd8 22.g4 hxg4 23.hxg4 fxg4 24.Bxg4 Bf7 25.Bc5 Rxd1 26.Bxd1 Nc4 27.Nxc4 Bxc4 28.Bc2 Kf7 29.Bd6 Bf6 30.Bb4 Bg7 31.Bd6(0:19:27) 6520939kN
 [+0.21]  d=47  1.Nf1 Nb6 2.c3 a5 3.a3 Rad8 4.Nxe5 Nxe5 5.Rxe5 Bf6 6.Re1 Qc6 7.f3 b4 8.axb4 axb4 9.cxb4 Qd6 10.Bd2 Bxb2 11.Rb1 Bf6 12.Qc1 Bh4 13.Re3 h6 14.Qc5 Qd7 15.Qc2 Bf6 16.Kh1 Rfe8 17.Rxe8 Rxe8 18.Re1 Rd8 19.Bf4 Nd5 20.Bxd5 Qxd5 21.Qxc7 Qb5 22.Qc4 Ba6 23.Qc5 Rd5 24.Qxb5 Bxb5 25.Rd1 Be7 26.Ne3 Rd4 27.Bg3 Bf6(0:18:49) 6309608kN
 [+0.07]  d=47  1.Nf1 Nb6 2.c3 a5 3.a3 Rad8 4.Nxe5 Nxe5 5.Rxe5 Bf6 6.Re1 Qc6 7.f3 b4 8.axb4 axb4 9.cxb4 Qd6 10.Bd2 Bxb2 11.Rb1 Bf6 12.Qc1 Bh4 13.Re3 h6 14.Qc5 Qd7 15.Qc2 Bf6 16.Kh1 Rfe8 17.Rxe8 Rxe8 18.Re1 Rd8 19.Bf4 Nd5 20.Bxd5 Qxd5 21.Qxc7 Qb5 22.Qc4 Ba6 23.Qc5 Rd5 24.Qxb5 Bxb5 25.Rd1 Be7 26.Ne3 Rd4 27.Bg3 Bf6 28.Bf2(0:18:30) 6201643kN
 [+0.26]  d=47  1.Nf1 Nb6 2.c3 a5 3.a3 Rad8 4.Nxe5 Nxe5 5.Rxe5 Bf6 6.Re1 Qc6 7.f3 b4 8.axb4 axb4 9.cxb4 Qd6 10.Bd2 Bxb2 11.Rb1 Bf6 12.Qc1 Bh4 13.Re3 h6 14.Qc5 Qd7 15.Qc2 Bf6 16.Kh1 Rfe8 17.Rxe8 Rxe8 18.Re1 Rd8 19.Bf4 Nd5 20.Bxd5 Qxd5 21.Qxc7 Qb5 22.Qc4 Ba6 23.Qc5 Rd5 24.Qxb5 Bxb5 25.Rd1 Be7 26.Ne3 Rd4 27.Bg3 Bf6 28.Bf2 Rxb4(0:17:58) 6022772kN
 [+0.16]  d=46  1.Nf1 Nb6 2.c3 a5 3.a3 Rad8 4.Nxe5 Nxe5 5.Rxe5 Bf6 6.Re1 Qc6 7.f3 b4 8.axb4 axb4 9.cxb4 Qd6 10.Bd2 Bxb2 11.Rb1 Bf6 12.Qc1 Bh4 13.Re3 h6 14.Qc5 Qd7 15.Qc2 Bf6 16.Kh1 Rfe8 17.Rxe8 Rxe8 18.Re1 Rd8 19.Bf4 Nd5 20.Bxd5 Qxd5 21.Qxc7 Qb5 22.Qc4 Ba6 23.Qc5 Rd5 24.Qxb5 Bxb5 25.Rd1 Be7 26.Ne3 Rd4 27.Bg3 Bf6 28.Bf2 Rxb4 29.Nc2(0:16:28) 5520176kN
 [+0.15]  d=46  1.Nf1 Nb6(0:16:08) 5404460kN
 [+0.42]  d=46  1.Nf1(0:13:58) 4675092kN
 [+0.33]  d=46  1.Nf1(0:12:32) 4187733kN
 [+0.24]  d=45  1.a4 Rae8 2.axb5 axb5 3.Ne4 Kh8 4.c4 bxc4 5.dxc4 Nf6 6.Nxf6 Qxd1 7.Rxd1 Bxf6 8.Be3 e4 9.Nd4 Rb8 10.Nxc6 Bxc6 11.Ba4 Bxa4 12.Rxa4 Rxb2 13.c5 Re8 14.Rd7 Rb1 15.Kh2 Kg8 16.g3 Be5 17.Rxe4 Kf8 18.Rc4 Rbb8 19.c6 Bd6 20.Bc5 Bxc5 21.Rxc5 Re7 22.Kg2 Rxd7 23.cxd7 Rd8 24.Rxc7 f6 25.Rc8 Ke7 26.Rxd8 Kxd8(0:07:21) 2423028kN
 [+0.18]  d=45  1.a4 Nf4 2.Ne4 Ng6 3.axb5 axb5 4.Rxa8 Bxa8 5.Bg5 h6 6.Bxe7 Qxe7 7.g3 Kh8 8.c3 f5 9.Neg5 Na5 10.h4 f4 11.h5 fxg3 12.fxg3 Nxb3 13.hxg6 Qc5 14.d4 exd4 15.Nf7 Kg8 16.Qxb3 dxc3 17.Kg2 Bxf3 18.Kxf3 Qc6 19.Ke3 Re8 20.Kf2 Qf6 21.Kg2 Rxe1 22.Ng5(0:06:30) 2132507kN
 [+0.09]  d=45  1.a4 Nf4 2.Ne4 Ng6 3.axb5 axb5 4.Rxa8 Bxa8 5.Bg5 h6 6.Bxe7 Qxe7 7.g3 Kh8 8.c3 f5 9.Neg5 Na5 10.h4 f4 11.h5 fxg3 12.fxg3 Nxb3 13.hxg6 Qc5 14.d4 exd4 15.Nf7 Kg8 16.Qxb3 dxc3 17.Kg2 Bxf3 18.Kxf3 Qc6 19.Ke3 Re8 20.Kf2 Qf6 21.Kg2 Rxe1 22.Ng5 Kh8(0:06:19) 2072214kN
 [+0.00]  d=44  1.a4 Nf4 2.Ne4 Ng6 3.axb5 axb5 4.Rxa8 Bxa8 5.Bg5 h6 6.Bxe7 Qxe7 7.g3 Kh8 8.c3 f5 9.Neg5 Na5 10.h4 f4 11.h5 fxg3 12.fxg3 Nxb3 13.hxg6 Qc5 14.d4 exd4 15.Nf7 Kg8 16.Qxb3 dxc3 17.Kg2 Bxf3 18.Kxf3 Qc6 19.Ke3 Re8 20.Kf2 Qf6 21.Kg2 Rxe1 22.Ng5 Kh8 23.Nf7(0:05:59) 1955290kN

[Master Om]

Maybe the difficulty is because after 14... Nxg2 15.Kxg2

[d]r4rk1/1bpqbppp/p7/1p2R3/8/1B1P1N1P/PPP2PK1/R1BQ4 b - - 0 15

15..a5, allowing the rook lift, is the only move, so at the start you need to see all of ... Nf4; ... Nxg2; ... a5; ... Ra6.

SF10:

depth=31
-0.78 15...a5 16.c3 Ra6 17.d4 Rg6+ 18.Kh2 Rf6 19.d5 Bd6 20.Kg2 Rxf3 21.Qxf3 Bxe5 22.a4 c6 23.Be3 cxd5 24.Bd4 Bxd4 25.cxd4 Rd8 26.Bc2 b4 27.Re1 g6 28.Bb3 Kg7 29.Qg4 Qd6 30.Qg5 Bc8 31.Qe7 Bf5 32.Qxd6 Rxd6 33.Rc1 h6 34.Rc5
+2.04 15...Bf6 16.Rh5 g6 17.Rc5 Be7 18.Re5 Bf6 19.Re3 c5 20.c3 Rad8 21.Qe2 Rde8 22.a4 Bg5 23.Rxe8 Rxe8 24.Be3 Bf4 25.axb5 Re5 26.Bd1 Rg5+ 27.Kf1 Qxh3+ 28.Ke1 Bxf3 29.Qxf3 Qxf3 30.Bxf3 Rg1+ 31.Ke2 Rxa1 32.Bxf4 axb5 33.Bd5 Ra6 34.Kd2

My fav sf version is stuck at Rxe7 and not c3.

Code: Select all

 [-0.33]  d=52  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Be5 Kh7 20.Re3 Qg4 21.Qxg4 Bxg4 22.Ke1 Re7 23.Kd2 c6 24.Bg3 Rxe3 25.Kxe3 Kh6 26.f3 Be6 27.Bf4 Kg6 28.Bc7 Kg5 29.Bd8 Kf5 30.Bxa5 h4 31.Kf2 Ba2 32.Bd8 g5 33.Ke3 Bb1 34.c3 Ba2 35.Bb6 Kg6 36.Bc7 Be6 37.Bd8 Bd5 38.Bc7 Ba2 39.Kf2 Bb1 40.Ke2 Kf5(0:03:37) 1089961kN
 [-0.33]  d=51  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Be5 Kh7 20.Re3 Qg4 21.Qxg4 Bxg4 22.Ke1 Re7 23.Kd2 c6 24.Bg3 Rxe3 25.Kxe3 Kh6 26.f3 Be6 27.Bf4 Kg6 28.Bc7 Kg5 29.Bd8 Kf5 30.Bxa5 h4 31.Kf2 Ba2 32.Bd8 g5 33.Ke3 Bb1 34.c3 Ba2 35.Bb6 Kg6 36.Bc7 Be6 37.Bd8 Bd5 38.Bc7 Ba2(0:03:22) 1028424kN
 [-0.32]  d=51  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Rf6 8.Ng5 Re8 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Rxf7 Qxf7 23.Qg3 c6 24.Bd4 Qg6 25.Qe5 h4 26.Qxa5 h3 27.Qe5 Qh6 28.Be3 Qh5 29.Qxh5 Bxh5 30.Bf4 Kg6 31.Ke3 Bd1 32.c3 Kf5 33.f3 Bc2 34.Bb8 Ke6 35.c4 Bb1 36.Bh2 c5 37.d4 Kd7 38.dxc5 Bf5 39.Kf2 Be6 40.Be5 g6 41.Bc3 Kc6 42.Kg1(0:03:21) 1026600kN
 [-0.23]  d=50  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Rf6 8.Ng5 Re8 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Rxf7 Qxf7 23.Qg3 c6 24.Bd4 Qg6 25.Qe5 h4 26.Qxa5 h3 27.Qe5 Qh6 28.Be3 Qh5 29.Qxh5 Bxh5 30.Bf4 Kg6 31.Ke3 Bd1 32.c3 Kf5 33.f3 Bc2 34.Bb8 Ke6 35.c4 Bb1 36.Bh2 c5 37.d4 Kd7 38.dxc5 Bf5 39.Kf2 Be6 40.Be5 g6 41.Bc3 Kc6 42.Kg1 Kxc5(0:02:04) 712379kN
 [-0.30]  d=50  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Rxf7 Qxf7 23.Qg3 c6 24.Bd4 Qg6 25.Qe5 h4 26.Qxa5 h3 27.Qe5 Qh6 28.Be3 Qh5 29.Qxh5 Bxh5 30.Bf4 Kg6 31.Ke3 Bd1 32.c3 Kf5 33.f3 Bc2 34.Bh2 Ke6 35.c4 Kf5 36.Kd2 Bb1 37.Ke3 Kf6 38.Bc7 Ke6 39.Bh2 Kd7 40.Be5(0:01:34) 570644kN
 [-0.20]  d=49  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Rxf7 Qxf7 23.Qg3 c6 24.Bd4 Qg6 25.Qe5 h4 26.Qxa5 h3 27.Qe5 Qh6 28.Be3 Qh5 29.Qxh5 Bxh5 30.Bf4 Kg6 31.Ke3 Bd1 32.c3 Kf5 33.f3 Bc2 34.Bh2 Ke6 35.c4 Kf5 36.Kd2 Bb1 37.Ke3 Kf6 38.Bc7 Ke6 39.Bh2 Kd7 40.Be5 Kc8(0:01:32) 557211kN
 [-0.22]  d=48  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Rxf7 Qxf7 23.Qg3 c6 24.Bd4 Qg6 25.Qe5 h4 26.Qxa5 h3 27.Qe5 Qh6 28.Be3 Qh5 29.Qxh5 Bxh5 30.Bf4 Kg6 31.Ke3 Bd1 32.c3 Kf5 33.f3 Bc2 34.Bh2 Ke6 35.Kd2 Bb1 36.c4 Kf5 37.Ke2 Kf6 38.Ke3 Kg5 39.Bg3 Kf5 40.Bc7 Bc2 41.Kd2 Bb3 42.Ke3 Bd1 43.Kf2 Bc2 44.d4(0:01:24) 509837kN
 [-0.32]  d=48  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Be3 Qd8 23.Bc5 c6 24.Qg5 Rxe7 25.Bxe7 Qd4 26.Bc5 Qd7 27.Qe3 Qd5 28.Be7 Qf5 29.Qe4 Kg8 30.Ke3 Kf7 31.Qxf5 Bxf5 32.Bd8 Be6 33.Ke4 Ba2 34.Bxa5 Bb1 35.c4 Ke7 36.Ke3 Kd7 37.Ke4 g6(0:01:20) 483891kN
 [-0.22]  d=48  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Be3 Qd8 23.Bc5 c6 24.Qg5 Rxe7 25.Bxe7 Qd4 26.Bc5 Qd7 27.Qe3 Qd5 28.Be7 Qf5 29.Qe4 Kg8 30.Ke3 Kf7 31.Qxf5 Bxf5 32.Bd8 Be6 33.Ke4 Ba2 34.Bxa5 Bb1 35.c4 Ke7 36.Ke3 Kd7 37.Ke4 g6 38.Bd2(0:01:05) 399080kN
 [-0.32]  d=47  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Be3 Qd8 23.Bc5 c6 24.Qg5 Rxe7 25.Bxe7 Qd4 26.Bc5 Qd7 27.Qe3 Qd5 28.Be7 Qf5 29.Qe4 Kg8 30.Ke3 Kf7 31.Qxf5 Bxf5 32.Bd8 Be6 33.Ke4 Ba2 34.Bxa5 Bb1 35.c4 Ke7 36.Ke3 Kd7 37.Ke4 g6 38.Bd2 h4(0:00:32) 235649kN
 [-0.33]  d=47  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Be3 Qd8 23.Bc5 c6 24.Qg5 Rxe7 25.Bxe7 Qd4 26.Bc5 Qd7 27.Qe3 Qd5 28.Be7 Qf5 29.Qe4 Kg8 30.Qe3 Bf3 31.Bd8 Kh7 32.Be7 Kg6 33.Bd8 Qg4 34.Bxa5 Qg5 35.Bc3 Qxe3 36.Kxe3 Bd5 37.Kf4(0:00:31) 231772kN
 [-0.23]  d=46  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Be3 Qd8 23.Bc5 c6 24.Qg5 Rxe7 25.Bxe7 Qd4 26.Bc5 Qd7 27.Qe3 Qd5 28.Be7 Qf5 29.Qe4 Kg8 30.Qe3 Bf3 31.Bd8 Kh7 32.Be7 Kg6 33.Bd8 Qg4 34.Bxa5 Qg5 35.Bc3 Qxe3 36.Kxe3 Bd5 37.Kf4 Ba2(0:00:29) 219713kN
 [-0.24]  d=45  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Be3 Qd8 23.Bc5 c6 24.Qg5 Rxe7 25.Bxe7 Qd4 26.Bc5 Qd7 27.Qe3 Qd5 28.Be7 Qf5 29.Qe4 Kg8 30.Qe3 Kf7 31.Bd8 Qb5 32.f3 Be6 33.Qa7 Kg6 34.Qe3 Qd5 35.Qe4 Kf7 36.Qxd5 Bxd5(0:00:14) 127271kN
 [-0.23]  d=45  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Rf7 18.Kd2 Bf3 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Be3 Rxe7 23.Qxe7 c6 24.Qa3 h4 25.Qxa4 Qg2 26.Qd4 h3 27.Bf4 Bh5 28.Qe4 Qxe4 29.dxe4 g5 30.Bg3 Kg6 31.f4 Bf3 32.Ke3 Bg4 33.fxg5 Kxg5 34.Bd6 Bd1 35.Kd2 Bf3 36.Ke3 Kg4(0:00:14) 126954kN
 [-0.14]  d=44  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Rf7 18.Kd2 Bf3 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Be3 Rxe7 23.Qxe7 c6 24.Qa3 h4 25.Qxa4 Qg2 26.Qd4 h3 27.Bf4 Bh5 28.Qe4 Qxe4 29.dxe4 g5 30.Bg3 Kg6 31.f4 Bf3 32.Ke3 Bg4 33.fxg5 Kxg5 34.Bd6 Bd1 35.Kd2 Bf3 36.Ke3 Kg4 37.c3(0:00:14) 125621kN
 [-0.16]  d=43  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Be3 Qd8 23.Bc5 Rxe7 24.Qxe7 Qxe7 25.Bxe7 c6 26.Bd8 Kg6 27.Ke3 Bd1 28.Kd2 Bf3 29.Ke3 Bg4 30.Kf4 Bd1 31.c3 Kf7 32.Ke5 Ke8 33.Bh4 Kd7 34.f4 Bc2 35.d4 Kc7 36.f5 Bb3 37.Kf4 Kd6 38.Kg5(0:00:11) 103120kN
 [-0.27]  d=43  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Rf6 8.Ng5 Re8 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Rxf7 Qxf7 23.Qg5 Qf5 24.Be3 c6 25.Qe7 Qd5 26.Qa3 h4 27.Qxa4 Qg2 28.Qd4 c5 29.Qe4 Qxe4 30.dxe4 h3 31.Bf4 g5 32.Bd6 a4 33.Ke3 Bd1 34.f3 c4 35.c3 Kg6 36.Kf2 Kh5 37.Kg3 h2 38.Kxh2 Bxf3 39.Kg3(0:00:09) 91975kN
 [-0.17]  d=42  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Rf6 8.Ng5 Re8 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qd5 20.Re8 Kh7 21.Re7 Bg4 22.Rxf7 Qxf7 23.Qg5 Qf5 24.Be3 c6 25.Qe7 Qd5 26.Qa3 h4 27.Qxa4 Qg2 28.Qd4 c5 29.Qe4 Qxe4 30.dxe4 h3 31.Bf4 g5 32.Bd6 a4 33.Ke3 Bd1 34.f3 c4 35.c3 Kg6 36.Kf2 Kh5 37.Kg3 h2 38.Kxh2 Bxf3 39.Kg3 Bxe4(0:00:06) 70993kN
 [-0.15]  d=41  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Rf6 8.Ng5 Re8 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qf5 20.Re8 Kh7 21.Re7 Rxe7 22.Qxe7 c6 23.Bd4 Qg4 24.Qe5 h4 25.Bc3 h3 26.Bxa5 Qh5 27.Qxh5 Bxh5 28.Bc7 g5 29.Ke3 Bd1 30.Kd2 Bf3 31.Ke3 g4 32.Kd4 Bd1 33.c3 Kg6 34.Kc5 Be2 35.d4 Bf3 36.Bg3 Kf5 37.c4 Ke4 38.d5 cxd5(0:00:06) 64033kN
 [-0.15]  d=40  4...a5 5.Rxe7 Qxe7 6.a4 Ra6 7.Kf1 Re8 8.Ng5 Rf6 9.Bxf7 Rxf7 10.Nxf7 Qxf7 11.Qg4 h5 12.Qg5 Qf3 13.Be3 bxa4 14.Re1 Rf8 15.Bd4 Qxh3 16.Ke2 Qd7 17.Qh4 Bf3 18.Kd2 Rf7 19.Bc5 Qf5 20.Re8 Kh7 21.Re7 Rxe7 22.Qxe7 c6 23.Bd4 Qg4 24.Qe5 h4 25.Bc3 h3 26.Bxa5 Qh5 27.Qxh5 Bxh5 28.Bc7 g5 29.Ke3 Bd1 30.Kd2 Bf3 31.Ke3 g4 32.Kd4 Bd1 33.c3 Bc2 34.Kc5 Bxd3 35.Kxc6 Kg6 36.Kd5 Be2 37.Kc5 Bd1 38.Kd4 Bc2 39.Bg3 Kf5 40.Kd5 Bb3 41.Kd4(0:00:03) 40993kN

[carldaman]

Hi Master Om,
I'm curious, which net are you using with the Nodchip SF of 20/07/19?
I find it intriguing that the older nets could still be better at analysis.
Thanks!

[Master Om]

Hi Master Om,
I'm curious, which net are you using with the Nodchip SF of 20/07/19?
I find it intriguing that the older nets could still be better at analysis.
Thanks!

nn-478d27f8b594.nnue

[carldaman]

Thanks, that's interesting. This net's posted date is Dec 2, 2020, so it's not that old - newer than the default SF net, in fact(!)

https://tests.stockfishchess.org/nns?page=1

[Master Om]

Thanks, that's interesting. This net's posted date is Dec 2, 2020, so it's not that old - newer than the default SF net, in fact(!)

https://tests.stockfishchess.org/nns?page=1

Yes.