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AlphaZero (Computer)
  
Number of games in database: 220
Years covered: 2017 to 2018

Overall record: +62 -11 =147 (61.6%)*
   * Overall winning percentage = (wins+draws/2) / total games in the database.

MOST PLAYED OPENINGS
With the White pieces:
 Queen's Indian (40) 
    E15 E17 E16 E18
 Nimzo Indian (12) 
    E21 E46 E47 E53 E41
 French Defense (12) 
    C11 C02 C13 C14 C18
 English (12) 
    A17 A15
 Queen's Pawn Game (9) 
    E00 E10 D02 A45
 Semi-Slav (9) 
    D43 D44 D45
With the Black pieces:
 Ruy Lopez (24) 
    C67 C65 C69 C92 C95
 Sicilian (7) 
    B94 B89 B67 B48 B80
 Giuoco Piano (6) 
    C50 C53
 King's Indian (5) 
    E60 E99 E87 E81 E84
 Queen's Gambit Declined (4) 
    D39 D38 D31 D37
 French Defense (4) 
    C18 C13 C14 C11
Repertoire Explorer

NOTABLE GAMES: [what is this?]
   AlphaZero vs Stockfish, 2017 1-0
   AlphaZero vs Stockfish, 2018 1-0
   AlphaZero vs Stockfish, 2017 1-0
   AlphaZero vs Stockfish, 2017 1-0
   AlphaZero vs Stockfish, 2018 1-0
   Stockfish vs AlphaZero, 2017 0-1
   AlphaZero vs Stockfish, 2017 1-0
   Stockfish vs AlphaZero, 2018 1/2-1/2
   Stockfish vs AlphaZero, 2018 1/2-1/2
   AlphaZero vs Stockfish, 2017 1-0

NOTABLE TOURNAMENTS: [what is this?]
   AlphaZero - Stockfish (2017)
   AlphaZero - Stockfish Match (2018)

GAME COLLECTIONS: [what is this?]
   Game Changer by keypusher
   Stockfish - AlphaZero (2017) by hukes70
   AlphaZero by ThirdPawn

RECENT GAMES:
   🏆 AlphaZero - Stockfish Match
   AlphaZero vs Stockfish (Jan-18-18) 1-0
   Stockfish vs AlphaZero (Jan-18-18) 1/2-1/2
   AlphaZero vs Stockfish (Jan-18-18) 1/2-1/2
   AlphaZero vs Stockfish (Jan-18-18) 1-0
   Stockfish vs AlphaZero (Jan-18-18) 1/2-1/2

Search Sacrifice Explorer for AlphaZero (Computer)
Search Google for AlphaZero (Computer)


ALPHAZERO (COMPUTER)

[what is this?]

AlphaZero is an application of the Google DeepMind AI project applied to chess and Shogi. In late 2017 experiments, it quickly demonstrated itself superior to any technology that we would otherwise consider leading-edge.

(1) Mastering Chess and Shogi by Self-Play with a General Reinforcement Learning Algorithm - https://arxiv.org/pdf/1712.01815.pdf

https://www.chessprogramming.org/Al...

Wikipedia article: AlphaZero

Last updated: 2018-12-02 14:34:00

 page 1 of 9; games 1-25 of 220  PGN Download
Game  ResultMoves YearEvent/LocaleOpening
1. AlphaZero vs Stockfish 1-01002017AlphaZero - StockfishE16 Queen's Indian
2. Stockfish vs AlphaZero 0-1672017AlphaZero - StockfishC65 Ruy Lopez, Berlin Defense
3. AlphaZero vs Stockfish 1-0702017AlphaZero - StockfishE17 Queen's Indian
4. AlphaZero vs Stockfish 1-01172017AlphaZero - StockfishE17 Queen's Indian
5. AlphaZero vs Stockfish 1-0562017AlphaZero - StockfishE17 Queen's Indian
6. AlphaZero vs Stockfish 1-0952017AlphaZero - StockfishC11 French
7. AlphaZero vs Stockfish 1-0522017AlphaZero - StockfishC11 French
8. AlphaZero vs Stockfish 1-0602017AlphaZero - StockfishE15 Queen's Indian
9. AlphaZero vs Stockfish 1-0682017AlphaZero - StockfishE16 Queen's Indian
10. Stockfish vs AlphaZero 0-1872017AlphaZero - StockfishC65 Ruy Lopez, Berlin Defense
11. AlphaZero vs Stockfish  ½-½1492018AlphaZero - Stockfish MatchE15 Queen's Indian
12. AlphaZero vs Stockfish  ½-½2552018AlphaZero - Stockfish MatchA17 English
13. AlphaZero vs Stockfish 1-0842018AlphaZero - Stockfish MatchA77 Benoni, Classical, 9...Re8, 10.Nd2
14. Stockfish vs AlphaZero ½-½1242018AlphaZero - Stockfish MatchB90 Sicilian, Najdorf
15. Stockfish vs AlphaZero ½-½2552018AlphaZero - Stockfish MatchD39 Queen's Gambit Declined, Ragozin, Vienna Variation
16. Stockfish vs AlphaZero ½-½522018AlphaZero - Stockfish MatchA26 English
17. AlphaZero vs Stockfish ½-½772018AlphaZero - Stockfish MatchD70 Neo-Grunfeld Defense
18. AlphaZero vs Stockfish ½-½1222018AlphaZero - Stockfish MatchB11 Caro-Kann, Two Knights, 3...Bg4
19. Stockfish vs AlphaZero 0-11422018AlphaZero - Stockfish MatchC67 Ruy Lopez
20. AlphaZero vs Stockfish 1-0672018AlphaZero - Stockfish MatchA17 English
21. Stockfish vs AlphaZero  ½-½1602018AlphaZero - Stockfish MatchC67 Ruy Lopez
22. Stockfish vs AlphaZero  ½-½1662018AlphaZero - Stockfish MatchC65 Ruy Lopez, Berlin Defense
23. AlphaZero vs Stockfish ½-½2512018AlphaZero - Stockfish MatchE15 Queen's Indian
24. AlphaZero vs Stockfish  ½-½1992018AlphaZero - Stockfish MatchA17 English
25. AlphaZero vs Stockfish 1-0482018AlphaZero - Stockfish MatchE41 Nimzo-Indian
 page 1 of 9; games 1-25 of 220  PGN Download
  REFINE SEARCH:   White wins (1-0) | Black wins (0-1) | Draws (1/2-1/2) | AlphaZero wins | AlphaZero loses  

Kibitzer's Corner
< Earlier Kibitzing  · PAGE 31 OF 31 ·  Later Kibitzing>
Jul-28-19  csmath: No, just old Chessbase Fritz or something like that. You can probably find that on internet. There is really no improvement in terms of basic functionality in the last 5-6 years.
Jul-28-19
Premium Chessgames Member
  MissScarlett: Ehhhh, you find it.
Jul-28-19
Premium Chessgames Member
  keypusher: <Sally>, I enjoyed the review. Especially <OK. You have had your rant. Now get on with it.> :-)
Jul-29-19  MrMelad: <csmath: Again, Alpha Zero beating Stockfish is an absurd comparison when you take into account how much hardware Alpha Zero uses.>

On the same ground, stockfish beating Commodore64 chess is absurd given how much hardware stockfish uses, right?

Of course, as you said it, if you can't install it on your 10 years old computer it means it never happened...

Jul-29-19  MrMelad: <scholes: They have started new training run of leela chess zero. Test40 training run finished with gain of nearly 10 elo compared to network which defeated stockfish in tcec superfinal.>

Very interesting, thank you.

Of course, how fast a NN converges doesn't always correlates to how accurate it eventually becomes. It's usually a balance of hyper parameters, sometimes it is actually beneficial to let the network try more random moves at the beginning causing it to converge slower but to be more stable and accurate on later epochs.

Jul-29-19
Premium Chessgames Member
  Sally Simpson: ***

Hi K.P.

I am frustrate at such a powerful machine being wasted to prove or disprove the soundness of a sac in an OTB masterpiece when the computer cannot possibly have all the details such as clock times, tournament standings, previous history...etc..etc.

When I first got Fritz 6 I used it to help compose studies and mates in two problems.

It's solving speed was invaluable, as is a T.B. site and both often came up with a sneak shot then sends you off in a new direction, human, computer and chess having fun creating together.

If a machine like Stockfish had a 'show us the worse move' feature, show the variation that allows a mate in x moves no matter how long 'x' is or a 'every piece is a desperado' mode (it's how I play) and a sac showing it's highest evaluation even if it turns a, say 3.69 to -3.69.

You would get a lot of merry nonsense but a few 'wows' would be in there.

At the moment it being used as a glorified 'spell-checker', I want it writing poetry.

***

Jul-29-19
Premium Chessgames Member
  AylerKupp: <<MrMelad> On the same ground, stockfish beating Commodore64 chess is absurd given how much hardware stockfish uses, right? Of course, as you said it, if you can't install it on your 10 years old computer it means it never happened...>

I wouldn't call it absurd, I would call it "interesting" and "inconclusive", just to be kind. Besides, you can run Comodore64 chess programs on a PC in emulation mode, several of them exists. See, for example, https://www.myabandonware.com/game/... and http://www.spacious-mind.com/html/c.... I would not have any doubt what the results of a match with Stockfish against the latter, with an Elo rating of 1650 1750 would be. So it can be made to happen if you want to.

You could achieve similar results by giving Stockfish a time advantage against AlphaZero in a match. Since I estimated an 80X advantage in computational performance capability of the hardware used by AlphaZero compared to the hardware used by Stockfish in their 2018 match and make the contest approximately even. That means giving Stockfish 120 mins/40 moves with 60 mins/20 moves thereafter and 1.5 mins/40 moves with 0.75 mins/20 moves for AlphaZero.

Given the results that DeepMind saw when they did something similar (https://deepmind.com/documents/260/...) when Stockfish achieved a 67% scoring percentage when AlphaZero's time disadvantage was 1:100 and a 57% scoring percentage when AlphaZero's time disadvantage was 1:30 I would also have no doubt what the results of a Stockfish vs. AlphaZero match would be when AlphaZero was given a time disadvantage of 1:80.

But that would be absurd, wouldn't it?

Jul-29-19  john barleycorn: <AylerKupp: ...

But that would be absurd, wouldn't it?>

<I wouldn't call it absurd, I would call it "interesting" and "inconclusive", just to be kind.>

Just to be kind, this discussion is about what exactly?

Jul-29-19
Premium Chessgames Member
  Sally Simpson: ***

Hi J.B.

I'll explain, I am now techno savvy.

The debate started with: 'apparently' some chess programs play better the better the hardware.

(a bit like saying Fischer played better because he wore a suit instead of jeans and a T.)

This was put forward by the Stockfish fan bots after Alpha scudded it. (Personally I think it was the sea air.)

You join the discussion at the part where AylerKupp, to prove a point, wants Stockfish to play a 100 game match v a Commodore 64 with the '64 being connected to NASA.

***

Jul-29-19  scholes: See here for how strong leela is with 33 times time disadvantage.

https://cd.tcecbeta.club/archive.ht...

Since tcec hardware less than half of alphazero hardware. It is almost equal hardware.

Leela is stronger than rybka 4 while running on tcec cpu. Upper bound not established.

Some leela cpu results here

https://cd.tcecbeta.club/archive.ht...

Leela is still a very young project.

Jul-29-19  john barleycorn: <Sally Simpson: ***

Hi J.B.

I'll explain, I am now techno savvy. ...>

what?????? you went to the dark side of the force?

Sorry, I was raised by my grandma and she told me "Joerg, in the end it is always the man that counts." why, in SF (science fiction not Stockfish but that is subject to another epic discussion) are the dramatic decisions always in an old fashioned one-on-one contest and the light sabers play the smallest role? John Wayne did solve problems this way a 100 years ago.

Give Achilles a light saber he will be still Achilles. Give Darth Vader a pocket knife he will be still Darth Vader.

Jul-29-19
Premium Chessgames Member
  AylerKupp: <<john barleycorn> Give Achilles a light saber he will be still Achilles. Give Darth Vader a pocket knife he will be still Darth Vader.>

But give Achilles a light saber and, while he would still be Achilles, he will be far more destructive than if he had an ordinary saber. And give Darth Vader a pocket knife and, while he would still be Darth Vader, he will be far less destructive than if he had a light saber.

Or, to put it a different way. If you could clone Achilles (Achilles 1 with a light saber, Achilles 2 with an ordinary saber), do you have any doubts that Achilles 1 would probably defeat Achilles 2 even though they would both still be Achilles? And if you could clone Darth Vader (Darth Vader 1 with a pocket knife, Darth Vader 2 with a light saber), do you have any doubts that Darth Vader 2 would probably defeat Darth Vader 1 even though they would still both be Darth Vader?

And, since I'm still trying to be uncharacteristically kind, is this discussion still at least tangentially related to AlphaZero and Stockfish?

Jul-29-19  john barleycorn: <AylerKupp: ...

But give Achilles a light saber and, while he would still be Achilles, he will be far more destructive than if he had an ordinary saber. ...>

I did not say something different. Achilles will still be brave, aggressive and inventive. And know to handle the light saber (as new tool given by the gods or whatever).

<And give Darth Vader a pocket knife and, while he would still be Darth Vader, he will be far less destructive than if he had a light saber.>

happy baloney.

Darth Vader was not powerful because of the light saber but because he could kill by a thought. Watch here:

https://www.youtube.com/watch?v=0ib...

Jul-29-19  nok: <But give Achilles a light saber and, while he would still be Achilles, he will be far more destructive than if he had an ordinary saber.>

Sing, goddess, Achilles' anger
Anger leads to hate. Hate leads to suffering.

Jul-29-19
Premium Chessgames Member
  northernfox: But, with or without a light sabre, the
great Achilles can never catch the lowly tortoise that has a head start: Zeno of Elea :)
Jul-29-19
Premium Chessgames Member
  Sally Simpson: ***

Hi Scholes,

Thanks for link.

Seems Leela (where do they get these names from...) is displaying Alpha traits.


click for larger view

Ceding control of the only file with a shrug of the shoulders and throwing up an h-pawn.

and here...White to play.

Black has just played 29...Qd5-Qb3 which tactically holds the h5 pawn due to the hits on the pawns on b2 and a4.


click for larger view

White played 30.Ne3


click for larger view

Black did not take the e-pawn. What happens if 30...Bxe5.

Took position to my chesspad and messed about with 31.Qxh5 for a while. Looks good, the Knight joins in but no cruncher... winning possibly but not happy. (the inner eye gnawing at me...you are missing something.)

Eventually gave up and went here

Analysis Laboratory

To see what this site's machine thinks. It will find the forced mate I'm missing.

Rats! it's obvious. I was looking at the wrong part of the board.

31.Ra1 Black has to give up a piece to save the Black Queen from Ra3. (doh!)

Well at least the inner eye is still in tune even if I'm not!

***

Jul-30-19
Premium Chessgames Member
  AylerKupp: <<parmetd> Leela is not a top level engine in any sense of the word. Of course, it might be some day >

Leela today is a top-level engine <system> (hardware + software) in every sense of the word, but only if you have a GPU to support it. If you look at the current (July 26, 2019) CCRL (40/40, 40/4) and current (July 28, 2019 and July 27, 2019) CEGT (40/20, 40/4) engine tournaments they provide the following data:

Leela had the following best scores:

<With GPU Support>:

Rating: 3486
Ranking: 2
Score % 67.7%

<Without GPU Support>:

Rating: 2876
Ranking: 97
Score % 58.2%

So clearly Leela performs much better with GPU support than without it.

In contrast <Stockfish>'s best scores were:

Rating: 3631
Ranking: #1
Score % 73.1%

For comparison with <Stockfish> these are the best cores of what are considered the next best classic engines:

<Houdini>:

Rating: 3591
Ranking: #2
Score % 65.6%

<Komodo>:

Rating: 3528
Ranking: #3
Score % 68.7%

So clearly Leela with GPU support is more than just "the engine that beats stockfish at blitz", it is currently competitive with Stockfish, Komodo, and Houdini.

Jul-30-19
Premium Chessgames Member
  AylerKupp: <<parmetd> Of course, it might be some day if they get the thousands of bugs out of it.

What is your reference for saying that Leela had thousands of bugs? How many have you personally experienced? Sure, Leela probably has many bugs, just like any other software program. But <serious> bugs? Yes, it crashed at least once during the last 2 TCEC tournaments but so did other major engines, specifically Komodo MCTS.

In software development it's customary to categorize bugs in terms of both severity and priority. Severity is an indication of the consequences of the software bug; a system crash due to software is obviously severe. But most software bugs are just annoyances with easy workarounds.

Priority is the designation of the order in which bugs should be addressed. Since these are often established by managers a bug's priority to be fixed is not necessarily the same as the bugs severity, but perhaps :-) I'm being too harsh. But I suspect that a bug that prevents Leela from continuing to compete in the TCEC is probably considered to have both a high severity and a high priority for fixing.

Jul-31-19
Premium Chessgames Member
  AylerKupp: <<scholes> Since tcec hardware less than half of alphazero hardware. It is almost equal hardware.>

Yes, I would say that TCEC hardware is less than half of AlphaZero hardware. Based on TFlops I estimated it to have ~ 1/80th the computational performance capability of the suite of TCUs used by AlphaZero in its 2018 matches with Stockfish. Hardly almost equal hardware.

Again using TFlops, I estimated the computations performance capability of the GPU server used in TCEC season 14 (NVIDIA GeForce RTX 2080 and RTX 2081i to have almost 16X the computational performance of the TCEC server used for classic engines in the same TCEC season. Unlike for previous seasons, I have surprisingly been unable to find any reference to the hardware used in TCEC season 15. I can only assume that it was the same as the hardware used in TCEC season 14.

<Leela is stronger than rybka 4 while running on tcec cpu. Upper bound not established.>

I assume that you're talking about Leela supported by a GPU. In the latest (July 27, 2019) CCRL 40/40 engine tournament list LeelaC0 0.21.2 with GTX1050 GPU was rated at 3436, ranked #2, and achieved a 61.3% percentage while the ancient Rybka 4.1 (last released in March 2011) was rated at 3145, ranked #27, and achieved a 49.7% scoring percentage. So, with GPU support, Leela is definitely stronger than Rybka 4 when running on the CCRL hardware (2-core AMD64 @ 2.4GHz). Although with 44 cores as in the TCEC hardware Rybka 4.1 should be stronger, I still think that Leela with GPU support should be stronger than Rybka 4.1 since Stockfish 10 is considerably stronger than Rybka 4.1 and the performance of Leela and Stockfish on the TCEC hardware is close.

But without GPU support it's a different story. The strongest non-GPU supported Leela is Leela 0.20.1 w36089. It was rated 2796, ranked #97, and achieved a 51.1% scoring percentage. So Rybka 4 is definitely stronger than Leela without GPU support when running on the CCRL hardware and should be even stronger on the TCEC hardware since it will have more cores available.

<Some leela cpu results here>

I didn't understand the CPU results provided at that site. What does LCZeroCPU 35.01 mean? At any rate CPU results for Leela supported by a GPU should not be very relevant since the bulk of the calculations in that configuration will be performed by the GPU and not the CPU.

Aug-04-19  scholes: <aylerkupp> 35.01 is evaluation of last move of the game.

<equal hardware> that statement is made for 33 times time odds game. Since you say tcec leela gpu setup in tcec is 16 times faster than tcec cpu. Hence giving 33 times time advantage is worse than playing on same cpu.

<ccrl> ccrl has tested older network on cpu. A recent network ld2 is much stronger. And Leela probably is scaling better with threads and nodes at these time controls.

Chess. Com is running a bonus where leela, Komodo, Houdini and stockfish are playing on same cpu hardware.

Chess.com/cccc

Leela is dead last but is performing even better than tcec cpu results. Currently only 60 elo behind Houdini 6 which is around 30-40 elo stronger than sf8.

Aug-10-19  get Reti: I've found in many games recently that Leela Zero spends a tempo playing a3 or h3 to prevent an opponent's bishop from pinning the knight early in the opening. I remember reading books by Irving Chernev pointing out how this is such a beginner's move and should rarely by done, looks like the neural networks have flipped it around!
Sep-10-19
Premium Chessgames Member
  keypusher: I don't even know what game this is. But humans are better at it than DeepMind AI, at least for now.

https://www.reddit.com/r/MachineLea...

<[R] DeepMind Starcraft 2 Update: AlphaStar is getting wrecked by professionals players>

Sep-10-19  ndg2: I miss the bidmonfa entry for this player
Oct-31-19
Premium Chessgames Member
  AylerKupp: <<keypusher> I don't even know what game this is. But humans are better at it than DeepMind AI, at least for now.>

Me neither, but the game is certainly not chess, and I doubt (at least I hope so!) that it is not as popular. So if DeepMind's AlphaStar is not (yet?) capable of beating the best human players, so what? I suspect that the initial versions of AlphaGo were not able to beat the best human players at Go either.

Nov-01-19  Lambda: It's a lot easier to make computers play games where the entire situation is known, like chess, than it is to make them play games with a 'fog of war'.
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