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| Jan-04-14 | | supertimchan: I'm on 100% and infinite limit. I use it for analysing not playing. Droidfish when tuned down is really not a good app to play against. It's like forcing Kasparov to draw a kid that has just started to learn chess. I prefer other weaker apps if I really want to play. While you're playing, you can also ask for the current analyze. You might use the information to beat Droidfish. |
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| Jan-04-14 | | MarkFinan: You might be giving me ideas, lol. What is it with chess players? You're all paranoid!IIt's pretty pointless doing that, I don't even like taking back moves so I'mhhardly going to cheat.... against an engine! And I think it's a really good app to play against for the reasons you gave. You can set it up to the perfect strength to suit you. Or, you could push it upto a 100% and learn the hard way, lol. Much prefer it to shredder, I've had critter is it? And one or two others, but this, all round is perfect for me.. |
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| Jan-04-14 | | MarkFinan: < It's like forcing Kasparov to draw a kid that has just started to learn chess.> And that's a bit harsh, haha. So you think it's rubbish to play against? Top for analysis? Kinda contradicted your first post when you said you know your own playing strength, so surely it should be perfect for you to play against, yeah? If you don't like the iinterface you can change everything about it! In fact, you kinda create your own board and pieces to a certain extent, whereas your stuck with one or two options with shredder.. |
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| Jan-04-14 | | supertimchan: When you play against a much stronger chess engine that has been tuned down against you, it always try to calculate more than a single move, say, 4 moves. Droidfish would calculate those four moves and randomly choose one of those four. This works but it's quite inconsistent in the way how the engine plays. Droidfish might try to attack your centre the move before, then switch to a completely different plan the move later. The engine would play without a plan because it's now allowed to play the move it wants to. You don't have the problem if the engine itself is weaker than you. |
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| Jan-04-14 | | MarkFinan: I find that on the setting I play it on, that it probably plays 2 "headscratchers" out of every 10 moves. Probably more! I don't often analyse my own games, I'll flick through every single one though but I just won't go back and forth like I seem to do with Grandmasters games. Obviously I checked some of that Borislav Ivanov's games, and once you can play to a decent level, have a decent understanding of the game (I've played since I was 7-8 but had a long break) and also know the *tiniest bit* about chess engines, you can just tell!?! Some of his games are quite shocking actually, because I don't know how he thought he'd get away with it, lol.. He may have played chess to a strong level anyway but he certainly has no intelligence or "streetwise smart" in him whatsoever. |
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| Jan-04-14 | | supertimchan: Boris is using Droidfish on his chest! Seriously, we don't have any concrete evidence to prove his crime. |
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| Jan-04-14 | | MarkFinan: Lol.. Maybe nothing concrete, but c'mon?? It wouldn't stand up in a court of law, definitely not in England anyway. Unless he was actually caught strapped.. Do you doubt it?? I don't think im a paranoid person, I'm not really a suspicious person (unlike a few people here! No names mentioned!) and I always like to give people the benefit of the doubt, but I've never been as sure *from what I've seen and heard*. And you only have to look through certain games of his.. He's guilty, he's been caught out, he knows it I know it, the whole chess world knows it.. I'll try find the game in question that really convinced me. I've never seen Carlsen or Kasparov play that perfectly! |
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| Feb-15-14 | | PJs Studio: I set my Stockfish program at 2500, widest variation of book verity, and playing style "suicidal" It gives me way more than I can handle. I thank the programmers greatly for showing me how much I need to improve. |
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| May-01-14 | | jdc2: Stockfish has won stage 3 of the TCEC. It will be playing against Houdini, Komodo and Critter in stage 4. http://tcec.chessdom.com/live.php
This stage could have some very interesting games, as the openings selected include the Scandinavian and the Dutch. |
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| Jun-07-14 | | supertimchan: The strongest computer engine is now free on iOS!!!! Stockfish is now the world no 1 and both the official Stockfish app and Smallfish have been upgraded to the super strong SF 5!! http://stockfishchess.org/download/ |
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| Jun-08-14 | | supertimchan: Stockfish 5 is better than Houdini. |
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| Jun-12-14 | | NeoIndian: A very interesting and insightful article about the recent TCEC Superfinal by IM Erik Kislik: http://www.chessdom.com/im-erik-kis... |
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| Jun-18-14 | | supertimchan: http://www.computerchess.org.uk/ccr...
Houdini is not the best. Don't buy it!!!! |
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| Jul-21-14 | | mrandersson: Stockfish the new engine of choice for super gms. Just think what the next generation of grand master will be like with getting help and ideas from even better engines. The depths of stockfish even on weak hardware such as a atom netbook is quite remarkable. |
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| Sep-07-14 | | Bezlitosci: Stockfish's games are strange to me. If I had to compare it to a player it reminds me most of Lasker. Some other great players, like Alechine or Capablanca had their own specific style, Lasker's games are bit strange to follow. As regards computers - for example watching Rybka's victories can be enjoyable, it has - I will call it - a romantic style. After some of Rybka's games I can say "great victory". After Stockfish's victories usually comes to my mind "ehh... what happened here?" Like making few dozens of seemingly purposeless moves in an even position and all of a sudden Stockfish won a game. |
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Sep-07-14
 | | JointheArmy: <Bezlitosci> Well said. Stockfish's evaluations are even more mysterious, IMO. |
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| Sep-30-14 | | MarkFinan: <supertimchan: Stockfish 5 is better than Houdini> Ever since the last update I've only beaten it once I think. Ironically enough with the black pieces too, but set to 65% strength. It really is a great app to play against now. I used to prefer shredder (apart from the levels.. See our conversation above) but since this update it's been so much better. |
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| Oct-01-14 | | Dredge Rivers: Gone fishin'! :) |
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| Oct-02-14 | | MarkFinan: [Event "?"]
[Site "?"]
[Date "2014.10.01"]
[Round "?"]
[White "Player AM "]
[Black "Stockfish 5 (60.1%)"]
[Result "*"]
[TimeControl "40/300+5"]
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. O-O Qc7 7. Qe2 d6 8. c4
g6 9. Nc3 Bg7 10. Rd1 O-O 11. f4 Bd7 12. Be3 Rc8 13. Rac1 Bf8 14. h3 Nc6 15.
Nf3 Re8 16. Qf2 Rec8 17. Bb6 Qb8 18. e5 Ne8 19. Ng5 h6 20. Nf3 Nb4 21. Bxg6
fxg6 22. Qg3 Rxc4 23. Qxg6+ Bg7 24. f5 Rf4 25. fxe6 Bc6 26. Be3 Rf8 27. Nd4
dxe5 28. Nf5 Kh8 29. Nxh6 Rf6 30. Nf7+ Kg8 31. Qg4 Qc7 32. Qxb4 Rxe6 33. Ng5
Qe7 34. Qb3 Bh6 35. Nd5 Bxd5 36. Qxd5 Kh8 37. Bc5 Qxg5 38. Qxe6 Qf6 39. Qxf6+
Nxf6 40. Rc4 Kg7 41. Be7 Be3+ 42. Kh1 Bd4 43. Rf1 Nd5 44. Bg5 Rh8 45. Kh2 Rh5
46. h4 Kg6 47. g4 Rxg5 48. hxg5 Ne3 49. Rf6+ Kxg5 50. Rxd4 exd4 51. Rd6 Nxg4+
52. Kg3 Ne5 53. Rxd4 b5 54. Rd6 Kf5 55. Rxa6 Nc4 56. b3 Nd2 57. Ra5 Ne4+ 58.
Kf3 Nd6 59. a4 Ke5 60. axb5 Kd5 61. b4 Nc4 62. b6+ Nxa5 63. bxa5 * I missed 17.e5! But check out 21. Bxh6???? Hollywood chess, lol. |
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| Oct-13-14 | | MarkFinan: Stockfish had a new update yesterday but I'm not sure if it's for the better. I just played this, I only went one minute over the time limit and normally I take a couple of hours playing it on this setting. [Event "?"]
[Site "?"]
[Date "2014.10.13"]
[Round "?"]
[White "Player AM "]
[Black "Stockfish 121014 (60.1%)"]
[Result "*"]
[TimeControl "40/300+5"]
1. d4 e6 2. c4 Nf6 3. Nf3 b6 4. Nc3 Bb7 5. a3 d5 6. cxd5 Nxd5 7. Qc2 Nxc3 8.
Qxc3 Bd6 9. e3 O-O 10. Be2 Qf6 11. O-O Nd7 12. Qc2 Rad8 13. e4 Qg6 14. Bd3 f5
15. Ng5 fxe4 16. Nxe4 Nc5 17. dxc5 Bxc5 18. b4 Rxd3 19. Qxd3 Bxe4 20. Qg3 Qxg3
21. hxg3 Bd6 22. Ra2 c5 23. Re1 Ba8 24. Bf4 Bxf4 25. gxf4 Rc8 26. bxc5 bxc5 27.
Rae2 Bd5 28. Rc1 c4 29. Re5 g6 30. g4 Rf8 31. f5 Kf7 32. fxe6+ Bxe6 33. Ra5 Ra8
34. f3 Ke7 35. Rb5 Rd8 36. Rb7+ Rd7 37. Rxd7+ Kxd7 38. Kf2 h5 39. gxh5 gxh5 40.
Kg3 Ke7 41. Kh4 Kd6 42. Kxh5 Bd5 43. Kg5 Bxf3 44. Rxc4 Be2 45. Rc2 Bb5 46. Kf6
Kd5 *
click for larger viewLooks completely drawn to me. |
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| Oct-14-14 | | MarkFinan: And another update today! |
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| Oct-29-14 | | notyetagm: http://www.chessbomb.com/embed/2014... <Infenwe: Wow. This might be one of the most impressive games I've seen this entire season. SF playing down a rook for over 20 moves. Such amazing ability to evaluate compensation for the material.> 22 ... c2-c1=♕
click for larger viewWhite(!!!) wins this game.
[White "Stockfish 231014"]
[Black "Jonny 6"]
[Result "1-0"]
[Round "05"]
[Date "Wed Oct 29 2014"]
[WhiteClock "0:04:29"]
[BlackClock "0:32:07"]
1. d4 d5 2. c4 dxc4 3. e3 Be6 4. Nf3 c6 5. Nbd2 b5 6. a4 Nf6 7. axb5 cxb5 8. b3 c3 9. Bxb5+ Bd7 10. Bxd7+ Nbxd7 11. Nb1 Rc8 12. Qc2 Nd5 13. Ba3 e5 14. Bxf8 Kxf8 15. O-O Nb4 16. Qe4 c2 17. Na3 Nf6 18. Qb7 Nfd5 19. Nxe5 Qc7 20. Qb5 a6 21. Qa4 a5 22. Nb5 c1=Q 23. Raxc1 Qxc1 24. h3 Qc2 25. Nd6 Rb8 26. e4 Nb6 27. Qb5 Qc7 28. Ndxf7 Rg8 29. Qxa5 N6d5 30. Qa1 Nf4 31. d5 Nbd3 32. Qa3+ Qe7 33. d6 Qf6 34. d7+ Qe7 35. Qa5 Nxe5 36. Nxe5 Qd6 37. Kh2 Ng6 38. f4 Ke7 39. Nc4 Qd4 40. f5 Nf8 41. Rf2 Qxf2 42. Qe5+ Kxd7 43. Qxb8 Ke7 44. Qe5+ Kd8 45. Qd5+ Ke7 46. Qxg8 Qf4+ 47. Kg1 Qc1+ 48. Kf2 Qf4+ 49. Ke2 Qxe4+ 50. Ne3 Qe5 51. Kf3 h6 52. b4 Ke8 53. Qd5 Qf6 54. Qe4+ Kf7 55. b5 Nd7 56. Qc4+ Ke8 57. Qc8+ Qd8 58. Qxd8+ Kxd8 59. Ke4 Nf8 60. Kd5 Kc8 1-0 |
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| Jan-10-15 | | zanzibar: I just submitted all 64 games from TCEC Season 7 Superfinal (Komodo--Stockfish). Hopefully they get added in soon. |
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| Jan-27-15 | | refutor: I have toggled around with stockfish at home and has anyone noticed how much it dislikes King's Indian-type positions? |
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| Aug-23-15 | | NeverAgain: I have used Stockfish 6 for game analysis extensively throughout this year and observed some strange things. Just for reference, most of my analysis is done on this setup: Core 2 Duo 2.2GHz 2GB RAM laptop
Win7 32-bit Ultimate
Stockfish 6 32-bit / 2 threads / 1024 MB hashtable
Rybka 4 GUI (same as the one that comes with the more recent Fritz versions, I guess) from Chessbase Occasionally I use the same SF6 setup on my main box, a custom-built Core 2 Duo 3GHz 2GB RAM desktop with WinXP SP3. *** Case 1 ***
The position after <38...Qa7> in Nezhmetdinov vs Ujtelky, 1964
click for larger view
I did a Blundercheck - @600 seconds/move, 33-unit threshold - on this game on the laptop, which took around 24 hours to complete. Instead of the <39.Bc2> (evaluated as -0.34 at depth 34) played in the game SF6 suggested <39.Qa3> as the alternative, the full line being
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<39.Qa3 a5 40. Bc2 Qb6 41. Rg3 Bb7 42. b3 Nd7 43. Qd6 Rd8 44. c4 Nc8 45. Qa3 b4 46.Qxa5 dxc4 47. Nxb4 c5 48. Na6 Bxa6 49. Qxa6 Nxe5 50. bxc4 Qxa6 51. Rxa6 Rd2 52.Rc3 Nd6 53. Ra5 Ng4 54. Rxc5 Rxf2 0.56/31>
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When I went through that line step by step and got to the position after <54.Rxc5>
click for larger view
I noticed to my horror that instead of <54...Rxf2> Black can win at least a piece with <54...Ne4>, since <55.Bxe4> is out of the question because of <55...Rd1#>. So the recommended line turned out to be closer to [-4.xx] rather than [+0.56]. *** Case 2 ***
The position after <44...b4> in A Yap vs Tal, 1985
click for larger view
Here White (an IM rated 2425) recognized the futility of trying to cash in his two extra pawns and went in for a perpetual with <45.Nf5>. Black has a simple plan: <...b3>, Rook to the second rank and the white King can't get out of its corner, nor the white Rook can leave the first rank because of the back rank mate threat. If White confronts the enemy Rook with <Rd1>, Black simply plays <...Rc2>.
SF6, on the other hand, recommends
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<45. a3 b3 46. a4 Ke6 47. a5 Bd2 48. a6 Ra8 49. Rd1 Bg5 50. Nf5 Rxa6 51. g3 Ra8 52. Rd6+ Kf7 53. Rd5 Ke6 54. Ng7+ Kf7 55. Rd7+ Kf6 56. Nh5+ Ke6 57. Rd5 Be7 58. Ng7+ Kf6 59. Rd7 Rd8 60. Rxd8 Bxd8 61. Nf5 Ba5 62. Ne3 Be1
63. Nxc4 Bxg3 64. Nd2 0.98/32>
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Larry Kaufman, Komodo's developer, whose authority in computer chess I find hard to question and who should be particularly knowledgeable about Stockfish as it is Komodo's main rival, had this to say in a Q&A session on the Quality Chess blog:
<Q: What are the different properties of Komodo, Stockfish, Houdini, Rybka and Fritz and how would the person who wants to improve their chess use these differences to his advantage?A: Komodo is best at evaluating middlegame positions accurately once the tactics are resolved. Stockfish seems to be best in the endgame and in seeing very deep tactics.> So I fed the position after the recommended <45.a3> into Komodo 6 (the latest freeware version available), set the GUI to Infinite analysis and waited for the eval to reach zero. Then I did the same with Stockfish 6 (both analyses were done on the 3GHz box) and compared the numbers: Komodo 6 - d:28 1600mN 21:00
Stockfish 6 - d:45 5400mN 36:00
The blog interview quoted above took place in 2013 when Stockfish 4 was the current version. I can only assume that either there's been significant regression in SF's endgame handling in the past year and a half, or that Larry gave SF too much credit. [to be continued] |
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