Re: What was the last good Stockfish?
Posted: Sat Sep 28, 2019 9:55 pm
I have been playing against it and found it plays some very unusual combinations.
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Re: What was the last good Stockfish?
Posted: Sat Sep 28, 2019 10:46 pm
Thanks much for your feedback John. That is very good to hear!!
Re: What was the last good Stockfish?
Posted: Sat Sep 28, 2019 11:35 pm
Eelco , I have copies of all your past altered engines from here & the rybka forum & the long gone excellent toga developers discussion board and this one is by far your most interesting. Keep up the fine work. Karger
Re: What was the last good Stockfish?
Posted: Sun Sep 29, 2019 6:03 am
Hold on, this doesn't make sense...
The version of Stockfish that is the last one with configurable parameters is the 20140517-2059 version, dated May 17 2014 from here.
The very next one is the 20140519-1224 version, dated May 19 2014 from here, which reads:
So the history went that a few days before Stockfish 5 was released, that happened...
HOWEVER, Stockfish 5 is the 20140531-0716 version, dated May 31 2014, from here.
But Stockfish 5 has those settings back!
So what happened? Were the settings removed, and then added back, and then removed again? Does it turn out that 20140517 is not the last version with the settings on there? Was Stockfish 5 based on a version previous to 20140517? Does 20140531-2134 (next after S5) have the settings or not?
This all is extremely confusing, specially because I clearly remember that THE REASON I even have the 20140517 version is that Stockfish 5 didn't have the settings, so I went to search for the last version that did. So if Stockfish 5 always had the settings, not only do my memories of the events not match the past, they also don't make sense... (I'd have only looked for it when Stockfish 6 was released without the settings, and I'd have looked at the versions after Stockfish 5
)
The version of Stockfish that is the last one with configurable parameters is the 20140517-2059 version, dated May 17 2014 from here.
The very next one is the 20140519-1224 version, dated May 19 2014 from here, which reads:
It also has Mobility, Pawn Structure, Passed Pawns, and Space settings removed.Retire current asymmetric king evaluation
and use a much simpler symmetric one.
As a side effect retire the infamous
'Aggressiveness' and 'Cowardice' UCI
options.
So the history went that a few days before Stockfish 5 was released, that happened...
HOWEVER, Stockfish 5 is the 20140531-0716 version, dated May 31 2014, from here.
But Stockfish 5 has those settings back!
So what happened? Were the settings removed, and then added back, and then removed again? Does it turn out that 20140517 is not the last version with the settings on there? Was Stockfish 5 based on a version previous to 20140517? Does 20140531-2134 (next after S5) have the settings or not?
This all is extremely confusing, specially because I clearly remember that THE REASON I even have the 20140517 version is that Stockfish 5 didn't have the settings, so I went to search for the last version that did. So if Stockfish 5 always had the settings, not only do my memories of the events not match the past, they also don't make sense... (I'd have only looked for it when Stockfish 6 was released without the settings, and I'd have looked at the versions after Stockfish 5
)Re: What was the last good Stockfish?
Posted: Sun Sep 29, 2019 9:46 am
It really looks like they took the settings out out, put them back in and took them out again. I have an old Stockfish Rockwood (RW) compile from late May 2014 that has the settings back in there. Very strange - I've always (mis?)remembered that they took them out and they were gone for good.
Re: What was the last good Stockfish?
Posted: Sun Sep 29, 2019 9:51 am
Well, you must be congratulated on this one, Eelco! Bluefish has got a savage attacking style, just from the changes you made. A much better playing style and personality than all the top engines!Eelco de Groot wrote: ↑Fri Sep 27, 2019 6:59 amSure, I can make it available, CarlSee Bluefish BMI2 (Beta).
No guarantees it has "style" though. It's just a half hour work or so, not a real Stockfish variant or fork yet.
I've run some test matches, but with little time available. I hope to be able to post some of its games when I get more free time.
Cheers!
Re: What was the last good Stockfish?
Posted: Mon Sep 30, 2019 8:44 am
I am posting a brilliant attacking masterpiece by Bluefish, featuring a great sac to leave Black positionally helpless, despite being up a (useless) piece. It is very typical and indicative of how it tackles every game.
[pgn] [Event "10m+6s"] [Date "2019.09.29"] [Round "5"] [White "Bluefish 20190925"] [Black "Vitruvius_1.11H_HEM"] [Result "1-0"] [ECO "D37"] [PlyCount "113"] 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. c5 Nh5 8. Be5 Nxe5 9. Nxe5 Nf6 10. Bd3 Nd7 11. Nxd7 Bxd7 12. Qc2 g6 13. h4 Bxh4 14. O-O-O f5 15. f3 Rf7 16. Rdg1 b6 17. g4 c6 18.Qh2 Bf6 19. Na4 b5 20. Nc3 b4 21. Nd1 a5 22. f4 a4 23. Rg3 Qc7 24. g5 Bh8 25. Rh3 Bc8 26. Rh6 Rg7 27. Nf2 Qe7 28. Be2 Bd7 29. Nd3 Rb8 30. Bh5 gxh5 31. Qxh5 Rb7 32. Ne5 Be8 33. Qh4 Rc7 34. Kd1 Ra7 35. Ke2 Rb7 36. Kf2 Rc7 37. Qh3 Qd8 38. g6 Kf8 39. gxh7 Qe7 40. Rh2 Ra7 41. Kf3 Rb7 42. Qf1 Rb8 43. Rg2 b3 44. a3 Rc8 45. Qh1 Rxg2 46. Kxg2 Qg7+ 47. Kf2 Bf7 48. Rh2 Ke7 49. Qf1 Be8 50. Qa6 Rd8 51. Qb6 Bd7 52. Qa5 Ke8 53. Qxa4 Qf8 54. Qa7 Qe7 55. a4 Qf8 56. a5 Qe7 57. Qb7 1-0 [/pgn]
Take a look at the key position below. The h-pawn has already been sacced much earlier, but now the coup de grace is about to arrive, and Black ends up virtually paralyzed.
Notice the interesting V-chain pawn formation which tends to show up in other games of Bluefish, which helps command both sides of the board.
[d]1r4kb/3bq1rp/2p1p1pR/2Pp1pP1/pp1P1P2/3NP3/PP2B2Q/2K4R w - - 0 30
A remarkable march to victory, imho. Big thanks and kudos goes to Eelco de Groot for making this gem of an engine available to us. It makes regular Stockfish & Co. look boring and obsolete. THIS is the pathway to the future of chess.
Carl
[pgn] [Event "10m+6s"] [Date "2019.09.29"] [Round "5"] [White "Bluefish 20190925"] [Black "Vitruvius_1.11H_HEM"] [Result "1-0"] [ECO "D37"] [PlyCount "113"] 1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 Nbd7 7. c5 Nh5 8. Be5 Nxe5 9. Nxe5 Nf6 10. Bd3 Nd7 11. Nxd7 Bxd7 12. Qc2 g6 13. h4 Bxh4 14. O-O-O f5 15. f3 Rf7 16. Rdg1 b6 17. g4 c6 18.Qh2 Bf6 19. Na4 b5 20. Nc3 b4 21. Nd1 a5 22. f4 a4 23. Rg3 Qc7 24. g5 Bh8 25. Rh3 Bc8 26. Rh6 Rg7 27. Nf2 Qe7 28. Be2 Bd7 29. Nd3 Rb8 30. Bh5 gxh5 31. Qxh5 Rb7 32. Ne5 Be8 33. Qh4 Rc7 34. Kd1 Ra7 35. Ke2 Rb7 36. Kf2 Rc7 37. Qh3 Qd8 38. g6 Kf8 39. gxh7 Qe7 40. Rh2 Ra7 41. Kf3 Rb7 42. Qf1 Rb8 43. Rg2 b3 44. a3 Rc8 45. Qh1 Rxg2 46. Kxg2 Qg7+ 47. Kf2 Bf7 48. Rh2 Ke7 49. Qf1 Be8 50. Qa6 Rd8 51. Qb6 Bd7 52. Qa5 Ke8 53. Qxa4 Qf8 54. Qa7 Qe7 55. a4 Qf8 56. a5 Qe7 57. Qb7 1-0 [/pgn]
Take a look at the key position below. The h-pawn has already been sacced much earlier, but now the coup de grace is about to arrive, and Black ends up virtually paralyzed.
Notice the interesting V-chain pawn formation which tends to show up in other games of Bluefish, which helps command both sides of the board.
[d]1r4kb/3bq1rp/2p1p1pR/2Pp1pP1/pp1P1P2/3NP3/PP2B2Q/2K4R w - - 0 30
A remarkable march to victory, imho. Big thanks and kudos goes to Eelco de Groot for making this gem of an engine available to us. It makes regular Stockfish & Co. look boring and obsolete. THIS is the pathway to the future of chess.
Carl
Re: What was the last good Stockfish?
Posted: Wed Oct 02, 2019 1:33 am
@Ovyron - message on Rybka also refers :
The settings were removed in Stockfish 20140601-1137.
You can obtain the source code for all the older builds from here: https://nextchessmove.com/dev-builds It is source code only from the github, but I have compiled many builds without problems.
The settings were removed in Stockfish 20140601-1137.
You can obtain the source code for all the older builds from here: https://nextchessmove.com/dev-builds It is source code only from the github, but I have compiled many builds without problems.
Re: What was the last good Stockfish?
Posted: Wed Oct 02, 2019 6:53 am
Thanks maxdeg, it remains a mystery that the settings were added back and then removed again.
Anyway, compiling is such a hassle that I think that'd be the end of the line for me. Providing a service like abrok to get compiles was greatly appreciated, while it lasted.
Anyway, compiling is such a hassle that I think that'd be the end of the line for me. Providing a service like abrok to get compiles was greatly appreciated, while it lasted.
Re: What was the last good Stockfish?
Posted: Wed Oct 02, 2019 3:24 pm
You have mail ..Ovyron wrote: ↑Wed Oct 02, 2019 6:53 am Thanks maxdeg, it remains a mystery that the settings were added back and then removed again.
Anyway, compiling is such a hassle that I think that'd be the end of the line for me. Providing a service like abrok to get compiles was greatly appreciated, while it lasted.
