Why is this so difficult?

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Jouni
Posts: 3715
Joined: Wed Mar 08, 2006 8:15 pm
Full name: Jouni Uski

Why is this so difficult?

Post by Jouni »

[d]1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - 0 1 Best move 1.g4 .No engine I tried solved in reasonable time!

Analysis by Stockfish dev-20230911-3f7fb5ac:
.
.
1.Rad1 Bd6 2.Qh5 Qe8 3.Qxg5+ Qg6 4.Qxg6+ hxg6 5.Nc4 Rbd8 6.Nxd6 Rxd6 7.Rxf4 Bc2 8.Rxf8+ Kxf8 9.Be5 Rd7 10.Rd2 Ba4 11.Bf4 Ke8 12.Be3 Re7 13.Bxc5 Re5 14.Rd3 Kd7 15.b3 Bb5 16.Rd2 g5 17.Kf2 Kc7 18.h3 Kd7 19.Kg3 Kc7 20.Kf3 Be8 21.b4 Kd7 22.d6 Ke6 23.Kg4 Kd7 24.Rf2 Ke6 25.Rf8 Kd5 26.Kg3 Bd7 27.Rg8 Kc6 28.Rg7 Rd5 29.Kf3 Rd3+ 30.Ke2 Rd5 31.g4 Re5+ 32.Kf2 Rd5 33.Re7
+- (2.93) Depth: 53/77 00:26:32 5675mN, tb=199052
Jouni
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peter
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Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Why is this so difficult?

Post by peter »

Jouni wrote: ↑Thu Sep 21, 2023 7:48 am [d]1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - 0 1
That's a side- line to Caruana- Carlsen WM 2018, isn't it?
Peter.
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peter
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Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Why is this so difficult?

Post by peter »

Jouni wrote: ↑Thu Sep 21, 2023 7:48 am [d]1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - 0 1
That's from Caruana- Carlsen WM 2018, isn't it?

https://www.talkchess.com/forum3/viewto ... da#p779759

Latest CorChess get's it with MultiPV=2 in a second.

1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - -

Engine: CorChess 4 dev-20230916-71986a91 (32768 MB)
von I. Ivec, the Stockfish developers (see

Code: Select all

-----
 17	 0:00 	+1.78 	23.Tad1 Ld6 24.Dh5 Lg6 25.Dh3 Lf5 26.Dh6 Tf7 27.Tfe1 f3 28.gxf3 Lf4 29.d6 Df8 30.Dxf8+ Kxf8 31.Le5 Td8 32.Lxf4 gxf4 (13.445.543) 22005
 17	 0:00 	+1.62 	23.g4 Lg6 24.Tad1 Ld6 25.Tfe1 c4 26.Te6 Te8 27.Df2 Txe6 28.dxe6 De7 29.Kf1 Lb4 30.Lxb4 Dxb4 31.Sd5 Db3 32.Sf6+ Kg7 (13.445.543) 22005
-----
 18	 0:00 	+1.90 	23.Tad1 Ld6 24.Dh5 Lg6 25.Dh3 Tf7 26.Tfe1 c4 27.Sxc4 Lc5+ 28.Kh1 Dd7 29.Te6 Lf5 30.Dh6 f3 31.Dxg5+ Tg7 32.Lxg7 Dxg7 33.Dxg7+ Kxg7 34.b4 Lxb4 35.Tb6 f2 (20.165.399) 21990
 18	 0:00 	+1.71 	23.g4 Lg6 24.Tad1 Ld6 25.Tfe1 c4 26.Te6 Te8 27.Df2 Tc8 28.Kf1 Lc5 29.De2 Le3 30.Sxc8 Txe6 31.dxe6 Ld3 32.e7 (20.165.399) 21990
-----
 19	 0:01 	+1.92 	23.Tad1 Ld6 24.Dh5 Lg6 25.Dh3 Tf7 26.Tfe1 Lf5 27.Dh5 Lg6 28.Df3 c4 29.Sxc4 Te7 30.Te6 Lc5+ 31.Kh1 Txe6 32.dxe6 De7 33.Dd5 (24.791.277) 22036
 19	 0:01 	+1.71 	23.g4 Lg6 24.Tad1 Ld6 25.Tfe1 Te8 26.Te6 c4 27.Df2 Tc8 28.Txe8+ Dxe8 29.Te1 Dd8 30.Sxc8 Dxc8 31.h3 Dc7 32.Kg2 Lc5 33.Df3 Le3 34.d6 Df7 35.Kh2 h6 36.h4 (24.791.277) 22036
-----
 20	 0:01 	+2.14 	23.g4 Lg6 24.Tad1 Ld6 25.Tfe1 c4 26.Te6 Te8 27.Df2 Tc8 28.Txe8+ Dxe8 29.Te1 Dd8 30.Sxc8 Dxc8 31.h3 Lc5 32.Ld4 Lb4 33.Te5 Dc7 34.Txg5 Le7 35.Te5 Ld6 36.Te2 (37.121.966) 22416
 20	 0:01 	+1.87 	23.Tad1 Ld6 24.Dh5 Lg6 25.Dh3 Tf7 26.Tfe1 Lf5 27.Dh6 f3 28.gxf3 Lf4 29.d6 Df8 30.Dxf8+ Kxf8 31.Le5 Td8 32.Lxf4 gxf4 33.Kf2 Tg7 34.Td5 Lh3 35.Te4 Tg2+ 36.Ke1 (37.121.966) 22416
-----
 21	 0:02 	+2.16 	23.g4 Lg6 24.Tad1 Ld6 25.Tfe1 Te8 26.Te6 c4 27.Df2 Tc8 28.Txe8+ Dxe8 29.Te1 Dd8 30.Sxc8 Dxc8 31.h3 Dc7 32.Kg2 Lc5 33.Df3 Df7 34.Te6 Dd7 35.h4 gxh4 36.Kh3 (57.149.987) 22597
 21	 0:02 	+1.96 	23.Tad1 Ld6 24.Dh5 De8 25.Dxg5+ Dg6 26.Dxg6+ hxg6 27.Sc4 Tbd8 28.Sxd6 Txd6 29.Txf4 Lc2 30.Txf8+ Kxf8 31.Le5 Td7 32.Td2 La4 33.Lf4 Ke8 34.Le3 Tc7 35.h4 c4 36.d6 (57.149.987) 22597
-----

-----
 29	 0:26 	+2.97 	23.g4 Lg6 24.Tad1 Ld6 25.Tfe1 Dc7 26.Te6 Tbd8 27.Sc4 Tfe8 28.Lf6 Lf7 29.Lxd8 Txd8 30.Tf6 De7 31.Txd6 Txd6 32.Sxd6 Dxd6 33.De4 h6 34.Td2 Dd7 35.h3 Dd6 36.Kf2 (555.123.568) 20637
 28	 0:26 	+2.22 	23.Tad1 Ld6 24.Dh5 De8 25.Dxg5+ Dg6 26.Dxg6+ hxg6 27.Sc4 Tbd8 28.Sxd6 Txd6 29.Txf4 Lc2 30.Txf8+ Kxf8 31.Le5 Td7 32.Td2 La4 33.Lf4 Ke8 34.Le3 c4 35.Lf4 Lb3 36.d6 (555.123.568) 20637
 -----
 
 -----
34     2:05   +3.42    23.g4 Lg6 24.Tad1 Ld6 25.Tfe1 c4 
                       26.Te6 Te8 27.Df2 Txe6 28.dxe6 De7 
                       29.Kf1 Dxe6 30.Dd4 Lf8 31.Sxc4 Td8 
                       32.Dh8+ Kf7 33.Se5+ Dxe5 34.Dxe5 Txd1+ 
                       35.Ke2 Td6 36.Dxg5 (2.504.692.668) 19894 

33     2:05   +2.41    23.Tad1 Ld6 24.Dh5 De8 25.Dxg5+ Dg6 
                       26.Dxg6+ hxg6 27.Sc4 Tbd8 28.Sxd6 Txd6 
                       29.Txf4 Lc2 30.Txf8+ Kxf8 31.Le5 Td7 
                       32.Td2 Lb3 33.d6 Kf7 34.Lf4 Ke6 
                       35.Td3 La4 36.h4 (2.504.692.668) 19894 
----

----

38     4:51   +3.65    23.g4 Lg6 24.Tad1 Ld6 25.Tfe1 Te8 
                       26.Te6 c4 27.Df2 Txe6 28.dxe6 De7 
                       29.Kf1 Dxe6 30.Dd4 Lf8 31.Sxc4 Td8 
                       32.Dh8+ Kf7 33.Se5+ Dxe5 34.Dxe5 Txd1+ 
                       35.Ke2 Td6 36.Dxg5 (5.665.948.650) 19459 

38     4:51   +2.43    23.Tad1 Ld6 24.Dh5 De8 25.Dxg5+ Dg6 
                       26.Dxg6+ hxg6 27.Sc4 Tbd8 28.Sxd6 Txd6 
                       29.Txf4 Lc2 30.Txf8+ Kxf8 31.Le5 Td7 
                       32.Td2 La4 33.Lf4 Ke8 34.Le3 Te7 
                       35.Lxc5 Te5 36.Td3 (5.665.948.650) 19459
30 threads of16x3.5GHz- CPU, SyzygyProbeLimit=0.

Edit: not much difference as for SF dev. with MultiPV=2 btw., regards
Peter.
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Eelco de Groot
Posts: 4676
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Full name:   Eelco de Groot

Re: Why is this so difficult?

Post by Eelco de Groot »

Here is the gamescore from https://www.chessgames.com/perl/chessgame?gid=1937842

[pgn] [Event "Carlsen - Caruana World Championship Match"] [Site "London ENG"] [Date "2018.11.19"] [EventDate "2018.11.09"] [Round "8"] [Result "1/2-1/2"] [White "Fabiano Caruana"] [Black "Magnus Carlsen"] [ECO "B33"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "75"] 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Nd5 Nxd5 8.exd5 Nb8 9.a4 Be7 10.Be2 O-O 11.O-O Nd7 12.Bd2 f5 13.a5 a6 14.Na3 e4 15.Nc4 Ne5 16.Nb6 Rb8 17.f4 exf3 18.Bxf3 g5 19.c4 f4 20.Bc3 Bf5 21.c5 Nxf3+ 22.Qxf3 dxc5 23.Rad1 Bd6 24.h3 Qe8 25.Nc4 Qg6 26.Nxd6 Qxd6 27.h4 gxh4 28.Qxf4 Qxf4 29.Rxf4 h5 30.Re1 Bg4 31.Rf6 Rxf6 32.Bxf6 Kf7 33.Bxh4 Re8 34.Rf1+ Kg8 35.Rf6 Re2 36.Rg6+ Kf8 37.d6 Rd2 38.Rg5 1/2-1/2[/pgn]
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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Eelco de Groot
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Full name:   Eelco de Groot

Re: Why is this so difficult?

Post by Eelco de Groot »

PV from the Sun engine inserted:
[pgn] [Event "Carlsen - Caruana World Championship Match"] [Site "London ENG"] [Date "2018.11.19"] [Round "8"] [White "Fabiano Caruana"] [Black "Magnus Carlsen"] [ECO "B33"] [Result "1/2-1/2"] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. a4 Be7 10. Be2 O-O 11. O-O Nd7 12. Bd2 f5 13. a5 a6 14. Na3 e4 15. Nc4 Ne5 16. Nb6 Rb8 17. f4 exf3 18. Bxf3 g5 19. c4 f4 20. Bc3 Bf5 21. c5 Nxf3+ 22. Qxf3 dxc5 23. Rad1 (23. g4 Bg6 24. Rad1 Bd6 25. Rfe1 Re8 {(transposes with 26...c4)} 26. Re6 c4 27. Qf2 {(27. Pxc4 is an alternative)} Rxe6 28. dxe6 Qe7 29. Kf1 Qxe6 30. Qd4 Bf8 31. Nxc4 Rd8 32. Qh8+ Kf7 33. Ne5+ Qxe5 34. Qxe5 Rxd1+ $16 {(See diagram with Sun SE analysis)}) 23... Bd6 24. h3 Qe8 25. Nc4 Qg6 26. Nxd6 Qxd6 27. h4 gxh4 28. Qxf4 Qxf4 29. Rxf4 h5 30. Re1 Bg4 31. Rf6 Rxf6 32. Bxf6 Kf7 33. Bxh4 Re8 34. Rf1+ Kg8 35. Rf6 Re2 36. Rg6+ Kf8 37. d6 Rd2 38. Rg5 1/2-1/2 [/pgn]

[d]5b2/1p3k1p/p5b1/P3Q1p1/5pP1/2B5/1P5P/3r1K2 w - - Engine: Sun SE (512 MB)
gemaakt door E. Nemeth, the Stockfish developers (see https://github.com/official-stockfish/S ... er/AUTHORS)

39 21:31 +4.07 35.Ke2 Td6 36.Dxg5 Te6+ 37.Kf2 Ld6
38.Ld4 Le4 39.h4 Tg6 40.Dd8 Te6
41.g5 Le7 42.Dc7 f3 43.h5 Lc6 44.Le3 Td6
45.Dc8 Le4 46.Kg3 Te6 47.Lc5 Te5
48.Lxe7 (767.131.439) 593

39 21:31 +4.03 35.Kf2 Le7 36.h4 Td6 37.Dg7+ Ke8
38.Lb4 Te6 39.Dg8+ Kd7 40.Lxe7 Txe7
41.Dd5+ Ke8 42.Dxg5 Le4 43.Dg8+ Kd7
44.h5 f3 45.g5 Te8 46.Dg7+ Kd8
47.Df7 Te7 48.Df6 (767.131.439) 593

beste zet: Kf1-e2 tijd: 21:31.921 min n/s: 593.791 nodes: 767.131.439
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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Jouni
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Re: Why is this so difficult?

Post by Jouni »

MultiPV=2 is cheating and makes SF 100 Elo weaker :) . Normal mode solutions?
Jouni
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Uri Blass
Posts: 10941
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Location: Tel-Aviv Israel

Re: Why is this so difficult?

Post by Uri Blass »

Jouni wrote: ↑Fri Sep 22, 2023 8:00 am MultiPV=2 is cheating and makes SF 100 Elo weaker :) . Normal mode solutions?
I wonder if there is a test that show that multi-pv=2 make SF 100 elo weaker or even 50 elo weaker.
I expect clearly smaller difference.
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Jouni
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Re: Why is this so difficult?

Post by Jouni »

Sure there is a test https://github.com/official-stockfish/S ... ng-multipv !
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Master Om
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Location: INDIA

Re: Why is this so difficult?

Post by Master Om »

Jouni wrote: ↑Thu Sep 21, 2023 7:48 am [d]1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - 0 1 Best move 1.g4 .No engine I tried solved in reasonable time!

Analysis by Stockfish dev-20230911-3f7fb5ac:
.
.
1.Rad1 Bd6 2.Qh5 Qe8 3.Qxg5+ Qg6 4.Qxg6+ hxg6 5.Nc4 Rbd8 6.Nxd6 Rxd6 7.Rxf4 Bc2 8.Rxf8+ Kxf8 9.Be5 Rd7 10.Rd2 Ba4 11.Bf4 Ke8 12.Be3 Re7 13.Bxc5 Re5 14.Rd3 Kd7 15.b3 Bb5 16.Rd2 g5 17.Kf2 Kc7 18.h3 Kd7 19.Kg3 Kc7 20.Kf3 Be8 21.b4 Kd7 22.d6 Ke6 23.Kg4 Kd7 24.Rf2 Ke6 25.Rf8 Kd5 26.Kg3 Bd7 27.Rg8 Kc6 28.Rg7 Rd5 29.Kf3 Rd3+ 30.Ke2 Rd5 31.g4 Re5+ 32.Kf2 Rd5 33.Re7
+- (2.93) Depth: 53/77 00:26:32 5675mN, tb=199052

old Cfish 08022021 gets it with 1240 bin file

Code: Select all

 [+3.57]  d=42  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Re7 19.Qg8 Kd7 20.h5 f3 21.g5 Bb4 22.g6 hxg6 23.h6 Be1 24.Kg1 Bg3 25.Bf2 Bxf2 26.Kxf2 g5 27.Qxg5 Ke6 28.Qf4 Kd7 29.Qh4 Ke8 30.Qg4 Kf7 31.Qh3 Bh7 32.Qxf3 Ke6 33.Qe3 Kf7 34.Qf4 Ke6 35.Qc4 Kf6 36.Qc3 Kf5 37.Qc5 Ke6 38.Qc8 Kf6 39.Kf3 Rf7 40.Qd8 Ke6 41.Kg4 Ke5 42.Qb8 Ke6 43.Qc8(0:02:10) 1373509kN
 [+3.65]  d=41  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Re7 19.Qg8 Kd7 20.h5 f3 21.g5 Bb4 22.g6 hxg6 23.h6 Be1 24.Kg1 Bg3 25.Bf2 Bxf2 26.Kxf2 g5 27.Qxg5 Ke6 28.Qf4 Kd7 29.Qh4 Ke8 30.Qg4 Kf7 31.Qh3 Bh7 32.Qxf3 Ke6 33.Qe3 Kf7 34.Qf4 Ke6 35.Qc4 Kf6 36.Qc3 Kf5 37.Qc5 Ke6 38.Qc8 Kf6 39.Kf3 Rf7 40.Qd8 Ke6 41.Kg4 Ke5 42.Qb8 Ke6 43.Qc8 Ke5(0:02:09) 1362644kN
 [+3.61]  d=41  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Be7 19.Qg8 Kd7 20.Qf7 Bg6 21.Qg7 Kc6 22.h5 Be4 23.g5 Bd5 24.Qxh7 Bxg5 25.Qc2 Kd7 26.Qf5 Bh4 27.Kf1 Kc6 28.Qc2 Kd7 29.Bf2 Bf6 30.h6 Be4 31.Qa4 Ke7 32.Bc5 Kf7 33.Qd7 Be7 34.Kf2 Re5 35.Bxe7 Rxe7 36.Qg4 Bg6 37.Qg5 Bh7 38.Qxf4 Ke6(0:01:57) 1242685kN
 [+3.53]  d=41  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Be7 19.Qg8 Kd7 20.Qf7 Bg6 21.Qg7 Kc6 22.h5 Be4 23.g5 Bd5 24.Qxh7 Bxg5 25.Qc2 Kd7 26.Qf5 Bh4 27.Kf1 Kc6 28.Qc2 Kd7 29.Bf2 Bf6 30.h6 Be4 31.Qa4 Ke7 32.Bc5 Kf7 33.Qd7 Be7 34.Kf2 Re5 35.Bxe7 Rxe7 36.Qg4 Bg6 37.Qg5 Bh7 38.Qxf4 Ke6 39.Qc4(0:01:50) 1166546kN
 [+3.61]  d=40  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Be7 19.Qg8 Kd7 20.Qf7 Bg6 21.Qg7 Kc6 22.h5 Be4 23.g5 Bd5 24.Qxh7 Bxg5 25.Qc2 Kd7 26.Qf5 Bh4 27.Kf1 Kc6 28.Qc2 Kd7 29.Bf2 Bf6 30.h6 Be4 31.Qa4 Ke7 32.Bc5 Kf7 33.Qd7 Be7 34.Kf2 Re5 35.Bxe7 Rxe7 36.Qg4 Bg6 37.Qg5 Bh7 38.Qxf4 Ke6 39.Qc4 Kf6(0:01:50) 1165146kN
 [+3.55]  d=40  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Bb4 19.Qg8 Kd7 20.Qf7 Re7 21.Qxf4 Bd6 22.Qf6 Bg6 23.Qg5 Rf7 24.Kg1 Be4 25.Bc5 Bf4 26.Qg8 Bd5 27.Qh8 Bc7 28.Be3 Bd6 29.h5 Bf3 30.Qd4 Ke6 31.Qc4 Bd5 32.Qc8 Ke5 33.Qc3 Ke6 34.Qh8(0:01:41) 1071060kN
 [+3.37]  d=40  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Bb4 19.Qg8 Kd7 20.Qf7 Re7 21.Qxf4 Bd6 22.Qf6 Bg6 23.Qg5 Rf7 24.Kg1 Be4 25.Bc5 Bf4 26.Qg8 Bd5 27.Qh8 Bc7 28.Be3 Bd6 29.h5 Bf3 30.Qd4 Ke6 31.Qc4 Bd5 32.Qc8 Ke5 33.Qc3 Ke6 34.Qh8 Kd7(0:01:29) 943251kN
 [+3.29]  d=40  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Bb4 19.Qg8 Kd7 20.Qf7 Re7 21.Qxf4 Bd6 22.Qf6 Bg6 23.Qg5 Rf7 24.Kg1 Be4 25.Bc5 Bf4 26.Qg8 Bd5 27.Qh8 Bc7 28.Be3 Bd6 29.h5 Bf3 30.Qd4 Ke6 31.Qc4 Bd5 32.Qc8 Ke5 33.Qc3 Ke6 34.Qh8 Kd7 35.g5(0:01:22) 876440kN
 [+3.37]  d=40  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Bb4 19.Qg8 Kd7 20.Qf7 Re7 21.Qxf4 Bd6 22.Qf6 Bg6 23.Qg5 Rf7 24.Kg1 Be4 25.Bc5 Bf4 26.Qg8 Bd5 27.Qh8 Bc7 28.Be3 Bd6 29.h5 Bf3 30.Qd4 Ke6 31.Qc4 Bd5 32.Qc8 Ke5 33.Qc3 Ke6 34.Qh8 Kd7 35.g5 Re7(0:01:19) 844186kN
 [+3.45]  d=39  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Bb4 19.Qg8 Kd7 20.Qf7 Re7 21.Qxf4 Bd6 22.Qf6 Bg6 23.Qg5 Rf7 24.Kg1 Be4 25.Bc5 Bf4 26.Qg8 Bd5 27.Qh8 Bc7 28.Be3 Bd6 29.h5 Bf3 30.Qd4 Ke6 31.Qc4 Bd5 32.Qc8 Ke5 33.Qc3 Ke6 34.Qh8 Kd7 35.g5 Re7 36.Qd4(0:01:17) 822770kN
 [+3.37]  d=39  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 Re8 4.Re6 c4 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Re7 19.Qg8 Kd7 20.h5 Bb4 21.g5 Be1 22.Kg1 f3 23.g6 hxg6 24.h6 g5 25.Qxg5 Re6 26.Qg7 Re7 27.Qg4 Re6 28.Be3 Bxa5 29.Qh5 Rg6 30.Kf1 Bc7 31.Qh3 Re6 32.h7 Be5 33.h8Q Bxh8(0:01:09) 733057kN
 [+3.24]  d=39  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 Re8 4.Re6 c4 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Re7 19.Qg8 Kd7 20.h5 Bb4 21.g5 Be1 22.Kg1 f3 23.g6 hxg6 24.h6 g5 25.Qxg5 Re6 26.Qg7 Re7 27.Qg4 Re6 28.Be3 Bxa5 29.Qh5 Rg6 30.Kf1 Bc7 31.Qh3 Re6 32.h7 Be5 33.h8Q Bxh8 34.Qxh8(0:01:03) 667275kN
 [+3.16]  d=39  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 Re8 4.Re6 c4 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Re7 19.Qg8 Kd7 20.h5 Bb4 21.g5 Be1 22.Kg1 f3 23.g6 hxg6 24.h6 g5 25.Qxg5 Re6 26.Qg7 Re7 27.Qg4 Re6 28.Be3 Bxa5 29.Qh5 Rg6 30.Kf1 Bc7 31.Qh3 Re6 32.h7 Be5 33.h8Q Bxh8 34.Qxh8 Bd3(0:01:02) 660003kN
 [+3.08]  d=38  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 Re8 4.Re6 c4 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Re7 19.Qg8 Kd7 20.h5 Bb4 21.g5 Be1 22.Kg1 f3 23.g6 hxg6 24.h6 g5 25.Qxg5 Re6 26.Qg7 Re7 27.Qg4 Re6 28.Be3 Bxa5 29.Qh5 Rg6 30.Kf1 Bc7 31.Qh3 Re6 32.h7 Be5 33.h8Q Bxh8 34.Qxh8 Bd3 35.Kf2(0:01:02) 657388kN
 [+3.32]  d=38  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Be7 19.Qg8 Kd7 20.Qf7 Bg6 21.Qg7 Kd6 22.h5 Be4 23.g5 Bd5 24.b4 Kc6 25.Qxh7 Bxg5 26.Qc2 Kd7 27.Qf5 Bh4 28.Kg1 Kc6 29.Bf2 Bg3 30.Qd3 Be4 31.Qc3 Kd7 32.Bxg3 fxg3 33.Qg7(0:01:01) 655268kN
 [+3.20]  d=38  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Be7 19.Qg8 Kd7 20.Qf7 Bg6 21.Qg7 Kd6 22.h5 Be4 23.g5 Bd5 24.b4 Kc6 25.Qxh7 Bxg5 26.Qc2 Kd7 27.Qf5 Bh4 28.Kg1 Kc6 29.Bf2 Bg3 30.Qd3 Be4 31.Qc3 Kd7 32.Bxg3 fxg3 33.Qg7 Kd8(0:01:01) 644573kN
 [+3.12]  d=38  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Be7 19.Qg8 Kd7 20.Qf7 Bg6 21.Qg7 Kd6 22.h5 Be4 23.g5 Bd5 24.b4 Kc6 25.Qxh7 Bxg5 26.Qc2 Kd7 27.Qf5 Bh4 28.Kg1 Kc6 29.Bf2 Bg3 30.Qd3 Be4 31.Qc3 Kd7 32.Bxg3 fxg3 33.Qg7 Kd8 34.h6(0:01:00) 635881kN
 [+3.03]  d=37  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Be7 19.Qg8 Kd7 20.Qf7 Bg6 21.Qg7 Kd6 22.h5 Be4 23.g5 Bd5 24.b4 Kc6 25.Qxh7 Bxg5 26.Qc2 Kd7 27.Qf5 Bh4 28.Kg1 Kc6 29.Bf2 Bg3 30.Qd3 Be4 31.Qc3 Kd7 32.Bxg3 fxg3 33.Qg7 Kd8 34.h6 g2(0:00:58) 620286kN
 [+3.34]  d=37  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Be7 19.Qg8 Kd7 20.Qf7 Bg6 21.Qg7 Ke8 22.h5 Be4 23.Qg8 Kd7 24.Qf7 Bd5 25.Qxh7 Kd6 26.Kf1 Bc4 27.Kg1 Re1 28.Kf2 Rf1 29.Kg2 Bh4 30.Qg6 Kd5(0:00:57) 609524kN
 [+3.22]  d=37  1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8 Kf7 11.Ne5 Qxe5 12.Qxe5 Rxd1 13.Ke2 Rd6 14.Qxg5 Re6 15.Kf2 Bd6 16.Bd4 Be4 17.Qg7 Ke8 18.h4 Be7 19.Qg8 Kd7 20.Qf7 Bg6 21.Qg7 Ke8 22.h5 Be4 23.Qg8 Kd7 24.Qf7 Bd5 25.Qxh7 Kd6 26.Kf1 Bc4 27.Kg1 Re1 28.Kf2 Rf1 29.Kg2 Bh4 30.Qg6 Kd5 31.Bf6(0:00:51) 543624kN
Always Expect the Unexpected
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peter
Posts: 3434
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Why is this so difficult?

Post by peter »

Master Om wrote: ↑Fri Sep 22, 2023 7:10 pm old Cfish 08022021 gets it with 1240 bin file
This one uses nn-46832cfbead3.nnue

1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - 0 1

Analysis by CfishNN 20230626 64 POPCNT:

Code: Select all

23.Rae1 Bf6 24.h4 Bd4+ 25.Bxd4 cxd4 26.hxg5 Qxg5 27.Qxf4 Qxf4 28.Rxf4 d3 
  White is clearly better: +/- (1.36)  Depth: 10/12   00:00:00
...
23.Rad1 Bd6 24.Qh5 Qe8 25.Qxg5+ Qg6 26.Qxg6+ hxg6 27.Nc4 Rbd8 28.Nxd6 Rxd6 29.Be5 Rd7 30.Bxf4 Bg4 31.Rd2 Rdf7 32.Rdf2 Re7 33.h3 Bd7 34.Rc1 Re4 35.Bd6 Rxf2 36.Kxf2 Rb4 37.Be5 Re4 38.Bc3 g5 39.Kf3 Rf4+ 40.Ke3 Kf7 41.Be5 Rf5 42.Ke4 Rf2 43.Rxc5 Re2+ 44.Kd4 Rxb2 45.Rc7 
  White is clearly better: +- (2.08)  Depth: 27/48   00:00:05  140MN
23.Rad1 Bd6 24.Qh5 Qe8 25.Qxg5+ Qg6 26.Qxg6+ hxg6 27.Nc4 Rbd8 28.Nxd6 Rxd6 29.Be5 Rd7 30.Bxf4 Bg4 31.Rd2 Rdf7 32.Rdf2 Re8 33.h3 Bd7 34.Rc1 Re4 35.Bd6 Rxf2 36.Kxf2 Rb4 37.Be5 Re4 38.Bc3 Kf7 39.g4 Ke7 40.Kf3 Ra4 41.Be5 Rxa5 42.Re1 Kd8 43.Kf4 c4 44.Rd1 Ba4 45.Rd4 Rb5 46.Kg5 Rxb2 47.Rxc4 
  White is clearly better: +- (2.23)  Depth: 28/48   00:00:05  144MN
23.g4 
  White is clearly better: +- (2.31 ++)  Depth: 29/54   00:00:06  182MN
23.g4 
  White is clearly better: +- (2.43 ++)  Depth: 29/54   00:00:06  186MN
23.g4 
  White has a decisive advantage: +- (2.60 ++)  Depth: 29/54   00:00:07  199MN
23.g4 Bg6 24.Rad1 Bd6 25.Rfe1 c4 26.Re6 Re8 27.Qf2 Rxe6 28.dxe6 Qe7 29.Kf1 Qxe6 30.Qd4 Bf8 31.Nxc4 Rd8 32.Qh8+ Kf7 33.Ne5+ Qxe5 34.Qxe5 Rxd1+ 35.Ke2 Rd6 36.Qxg5 Re6+ 37.Kf2 Bd6 38.Bd4 f3 39.Qh6 Be4 40.Qg7+ Ke8 41.Qg8+ Kd7 42.h4 Be7 43.Qf7 Bg6 44.Qg7 h5 45.Kxf3 
  White has a decisive advantage: +- (2.82)  Depth: 29/54   00:00:07  224MN
...
23.g4 Bg6 24.Rad1 Bd6 25.Rfe1 c4 26.Re6 Re8 27.Qf2 Rxe6 28.dxe6 Qe7 29.Kf1 Qxe6 30.Qd4 Bf8 31.Nxc4 Rd8 32.Qh8+ Kf7 33.Ne5+ Qxe5 34.Qxe5 Rxd1+ 35.Ke2 Rd6 36.Qxg5 Re6+ 37.Kf2 Bd6 38.Bd4 Be4 39.h4 h6 40.Qg7+ Ke8 41.g5 hxg5 42.h5 g4 43.Qxg4 Kd7 44.Qg7+ Re7 45.Qg5 Re6 46.Qg4 Bb4 47.Bb6 Bd6 48.h6 Bd3 49.Qh3 Bh7 50.Qh5 Rg6 51.Qf5+ Ke7 52.Qe4+ Kf8 53.Qxb7 Rxh6 54.Qxa6 Be4 
  White is clearly winning: +- (4.47 ++)  Depth: 38/60   00:01:39  2968MN
30 threads of 16x3.5GHz CPU SyzygyProbeLimit=0.
This was one of 2 about equally fast trials, both with NNUE Pure option, third one of that kind took 50 seconds, one with Hybrid eval was as fast as the best ones, one with Hybrid taking >2 minutes.

Edit: Dragon 3.2 gets it in about 1 minute with Personality Aggressive, regards
Peter.
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