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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 E53 E47 E46 E41
 French Defense (12) 
    C11 C02 C14 C13 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 C92 C95 C69
 Sicilian (7) 
    B78 B90 B89 B67 B48
 Giuoco Piano (6) 
    C50 C53
 King's Indian (5) 
    E60 E99 E81 E84 E87
 Queen's Gambit Declined (4) 
    D31 D37 D39 D38
 French Defense (4) 
    C11 C14 C18 C13
Repertoire Explorer

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

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

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

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

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

Try our new games table.

 page 1 of 9; games 1-25 of 220  PGN Download
Game  ResultMoves YearEvent/LocaleOpening
1. Stockfish vs AlphaZero 0-1872017AlphaZero - StockfishC65 Ruy Lopez, Berlin Defense
2. Stockfish vs AlphaZero 0-1672017AlphaZero - StockfishC65 Ruy Lopez, Berlin Defense
3. AlphaZero vs Stockfish 1-0562017AlphaZero - StockfishE17 Queen's Indian
4. AlphaZero vs Stockfish 1-0522017AlphaZero - StockfishC11 French
5. AlphaZero vs Stockfish 1-0682017AlphaZero - StockfishE16 Queen's Indian
6. AlphaZero vs Stockfish 1-01002017AlphaZero - StockfishE16 Queen's Indian
7. AlphaZero vs Stockfish 1-0702017AlphaZero - StockfishE17 Queen's Indian
8. AlphaZero vs Stockfish 1-01172017AlphaZero - StockfishE17 Queen's Indian
9. AlphaZero vs Stockfish 1-0952017AlphaZero - StockfishC11 French
10. AlphaZero vs Stockfish 1-0602017AlphaZero - StockfishE15 Queen's Indian
11. AlphaZero vs Stockfish ½-½1022018AlphaZero - Stockfish MatchD31 Queen's Gambit Declined
12. AlphaZero vs Stockfish  1-0572018AlphaZero - Stockfish MatchD44 Queen's Gambit Declined Semi-Slav
13. AlphaZero vs Stockfish  1-01052018AlphaZero - Stockfish MatchE16 Queen's Indian
14. Stockfish vs AlphaZero 0-11422018AlphaZero - Stockfish MatchC67 Ruy Lopez
15. Stockfish vs AlphaZero 0-1482018AlphaZero - Stockfish MatchC58 Two Knights
16. Stockfish vs AlphaZero 0-11142018AlphaZero - Stockfish MatchC67 Ruy Lopez
17. Stockfish vs AlphaZero 1-01492018AlphaZero - Stockfish MatchC67 Ruy Lopez
18. Stockfish vs AlphaZero 0-1972018AlphaZero - Stockfish MatchC50 Giuoco Piano
19. Stockfish vs AlphaZero 0-1572018AlphaZero - Stockfish MatchC67 Ruy Lopez
20. AlphaZero vs Stockfish 1-0522018AlphaZero - Stockfish MatchD43 Queen's Gambit Declined Semi-Slav
21. AlphaZero vs Stockfish 1-0512018AlphaZero - Stockfish MatchA15 English
22. AlphaZero vs Stockfish 1-0732018AlphaZero - Stockfish MatchE16 Queen's Indian
23. AlphaZero vs Stockfish 1-0562018AlphaZero - Stockfish MatchA17 English
24. AlphaZero vs Stockfish 1-0492018AlphaZero - Stockfish MatchE16 Queen's Indian
25. AlphaZero vs Stockfish 1-0692018AlphaZero - Stockfish MatchE17 Queen's 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 4 OF 39 ·  Later Kibitzing>
Jan-10-18  WorstPlayerEver: Anand did not know they spent $25M. Speaking of brute force.
Jan-12-18  zborris8: <So many uninformed comments.>

Proving that artificial intelligence is no match for natural stupidity!

Jan-13-18  zborris8: AlphaGo has an IQ of 47.28, but a 6yr old has 55.

Paper:
https://arxiv.org/ftp/arxiv/papers/...

AI will reach an IQ of 10,000 in the upcoming years.

Jan-27-18
Premium Chessgames Member
  Ron: Here is the academic paper of AlphaZero:
https://arxiv.org/pdf/1712.01815.pdf

I suggest this to be chessgames.com Quote of the Day: "The parameters θ of the deep neural network in AlphaZero are trained by self-play reinforce- ment learning, starting from randomly initialised parameters θ. Games are played by selecting moves for both players by MCTS, at ∼ πt. At the end of the game, the terminal position sT is scored according to the rules of the game to compute the game outcome z: −1 for a loss, 0 for a draw, and +1 for a win. The neural network parameters θ are updated so as to minimise the error between the predicted outcome vt and the game outcome z, and to maximise the similarity of the policy vector pt to the search probabilities πt. Specifically, the parameters θ are adjusted by gradient descent on a loss function l that sums over mean-squared error and cross-entropy losses respectively, (p,v)=fθ(s), l=(z−v)2 −π⊤logp+c||θ||2 where c is a parameter controlling the level of L2 weight regularisation. The updated parameters are used in subsequent games of self-play."

Jan-27-18  ChessHigherCat: And to think parents forbid their child to engage in self-play for fear of learning disabilities!
Jan-27-18
Premium Chessgames Member
  alexmagnus: <zborris8> An AI programmed specifically to pass IQ tests once scored 150. So much for the bad old IQ.
Jan-27-18  john barleycorn: <alexmagnus: <zborris8> An AI programmed specifically to pass IQ tests once scored 150. ...>

Well, there are books out there to train yourself. to break 150 in an IQ test just requires a good memory....

Jan-27-18  ChessHigherCat: <AlphaGo has an IQ of 47.28, but a 6yr old has 55. Paper:
https://arxiv.org/ftp/arxiv/papers/...

That notion of "Absolute IQ" in the paper you cited seems suspect to me, because IQ is generally supposed to be measured as a function of age, which means that the average 6-year-old will always have an IQ of 100.

Jan-27-18
Premium Chessgames Member
  alexmagnus: The original definition of IQ was "mental age divided by biological age times 100, with mental maturity reached at 20".

By this, a 6-year-old has an "absolute IQ" (that is, measured as if he were an adult) of 30.

Jan-27-18  john barleycorn: <alexmagnus: The original definition of IQ was "mental age divided by biological age times 100, with mental maturity reached at 20".

By this, a 6-year-old has an "absolute IQ" (that is, measured as if he were an adult) of 30.>

?????

Jan-27-18  ChessHigherCat: <alexmagnus> Thanks for the formula. I still find the whole concept of "absolute IQ" dubious, though. I mean, take the case of 3-year-olds. You could devise a special test for them (of the figure-out-how-to-get-your-greedy-litte-hands on the Gerber's type) and then map their performance on a Bell curve and assign an IQ of 100 to the mean (i.e., average, not nasty :-) and the rest based on the standard deviations, but there's no way you could have them take a standard test designed for 20-year-olds because they don't even know how to read. Anyway, it all depends on the type of test. If it involves a lot of interpretation of verbal instructions computers suck absolutely.
Jan-27-18  ChessHigherCat: <John Barleycorn> I think he means an average 6-year-old with a relative (normal) IQ of 100 has an "absolute IQ" of X relative to the average 30-year-old with a relative (normal) IQ of 100 (although why should it be 30 if the age of "mental maturity' is supposed to be 20?) According to the usual IQ formula, a 6 year old who solves problems as well as the average 9-year-old has an IQ of 150:

https://www.merriam-webster.com/dic...
medical Definition of IQ. : a number used to express the apparent relative intelligence of a person based on the results of standardized testing: as. a : the ratio of the mental age (as reported on a standardized test) to the chronological age multiplied by 100.

Not only are 6-years-old incapable of reading the instructions of standardized test for adults but the extrapolation of IQ to computers seems absurd because computers have nothing like "age" so the whole approach seems misguided to me

Jan-27-18  john barleycorn: <ChessHigherCat: <John Barleycorn> I think he means an average 6-year-old with a relative (normal) IQ of 100 has an absolute IQ of X relative to a 30-year-old (although why should it be 30 if the age of "mental maturity' is supposed to be 20?) ...>

Yes, he was not very precise in his statement. and then who wants/needs/whatever compare a 6 year old to a 20 year old? Like *we* all know that for instance the ability for logical thinking is developed after puberty and that there are some early talents and some who will never learn it.

Jan-27-18
Premium Chessgames Member
  alexmagnus: The "mental maturity reached at 20" clause is given in the sense that past 20 those original tests should be read as if the testee were 20.

The original IQ tests were devised to detect mentally disabled children. This is why it was defined through age.

Jan-27-18  morfishine: <ChessHigherCat> I agree about the approach being misguided. I've taken a bunch of IQ tests on the internet for fun. They all have some disclaimer about interpretation. The weird thing is despite the disparate testing companies, I score virtually the same every time. So if there's nothing concrete to be interpreted, at least the meaningless results are consistent LOL

*****

Jan-27-18  john barleycorn: <morfishine: <ChessHigherCat> I agree about the approach being misguided. I've taken a bunch of IQ tests on the internet for fun. They all have some disclaimer about interpretation. ...>

I guess that help you a lot.

Jan-27-18  john barleycorn: <alexmagnus: The "mental maturity reached at 20" clause is given in the sense that past 20 those original tests should be read as if the testee were 20. ...>

Ah yes. I am 61 now. what would that result in?

Jan-27-18  ChessHigherCat: Anyway, what would the questions look like in the IQ test for computers.Take a question that would be easily understood by most Americans with an IQ of 80:

John drives a vintage 1941 Rolls Royce and Joe has a 1975 Oldsmobile. Which one is probably richer?

I guarantee you no supercomputer will understand that question. You can say, well it's culturally biased but exactly what culture does a computer have? To eliminate the "humanoid-bias" you would have to ask questions like "What is the cube root of 17 divided 96?", but that's reducing the whole notion of human intelligence to the level of a pocket calculator!

Jan-29-18  Big Pawn: I wonder if they will have Alpha Chess play anymore matches? The result here was stunning, no question about it, and I found these games to be the most interesting games in who knows how long. It's not every day you see Stockfish getting beaten up like this.

Has anyone heard any news about A0 since this match?

Jan-30-18
Premium Chessgames Member
  AylerKupp: Those are are interested in the IQ of AlphaZero or artificial intellingence in general might be interested in these papers: https://arxiv.org/ftp/arxiv/papers/... and https://arxiv.org/ftp/arxiv/papers/... .

And when you're through reading them, please explain them to me in terms that I might be able to understand.

Jan-30-18
Premium Chessgames Member
  keypusher: < john barleycorn: <alexmagnus: The "mental maturity reached at 20" clause is given in the sense that past 20 those original tests should be read as if the testee were 20. ...> Ah yes. I am 61 now. what would that result in?>

Decades of mental decline. I'm right behind you.

Jan-30-18  john barleycorn: <keypusher: ...

Decades of mental decline. I'm right behind you.>

Good to hear that I have followers ...

Feb-03-18  zborris8: <Ayler Kupp IQ papers> Beat you to it!

AlphaZero (Computer) (kibitz #78)

Feb-11-18
Premium Chessgames Member
  AylerKupp: <<zborris8> Beat you to it!>

You say that as though beating me at anything (except perhaps verbosity) was a hard thing to do ?!

But, as a "reward" for beating me, you get to explain the paper to me. :-)

Feb-11-18  WorstPlayerEver: What I feared became true. Computers are just senseless machines which rely on calculations.

The engine. I based my observation on the materialistic mind of its developers to figure out their weaknesses.

Needless to state I had to prevail ☺

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