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Questions tagged [alphazero]

For questions about the Alpha Zero chess engine, currently the strongest chess engine there is, using artificial intelligence rather than minimax algorithms.

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AlphaZero and the revenge of the Artificial Intelligence

Answering this question, @SmallChess offered this answer: Before Google's chess journey, the chess engine community believed: AI chess will not beat classical programming because neural networks ...
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3answers
149 views

Why does AlphaZero evaluate on the order of 1000 times less moves than Stockfish?

According to Deep mind's article, Alpha Zero searches roughly 10,000 moves per decision, while Stockfish is around 10,000,000 moves. I'm aware that Alpha Zero uses Monte Carlo Tree Search while ...
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1answer
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AlphaZero’s search procedure

I am aware of related questions and great answers on the same topic such as Understanding AlphaZero. My questions are related to the following figure on AlphaZero's search procedure This figure ...
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1answer
105 views

Amount of search per decision: GMs versus AlphaZero and Stockfish [duplicate]

In Demis Hassabis' presentation at the the Kinds of Intelligence Symposium in January 2018, grandmasters are compared to AlphaZero and Stockfish along an interesting metric: how many moves are ...
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3answers
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The games AlphaZero lost

AlphaZero lost 6 games to Stockfish in a 1000-game match from the starting position, at least one of which was with the white pieces: A game A0 lost with white. For some reason, these games haven't ...
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1answer
146 views

Is AlphaZero deterministic?

AlphaZero searches for moves using Monte Carlo Tree Search (MCTS). As I understand MCTS, it takes the root position, goes to a child node, and then plays random moves until one side wins. Since the ...
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2answers
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Alpha Zero vs Lc0 - time for self-play

Alpha Zero defeated Stockfish after only 9 hours of self-play. On the other hand, Lc0, has been training for several months and while attaining impressive strength (to say the least...) it's still not ...
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1answer
503 views

Is there any analysis of the Carlsen-Caruana World Championsip match by AlphaZero?

How cool would it be to have the world's most powerful computer analyzing games played in a match between the world's two strongest human players? Has it happened yet and is the analysis available?
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1answer
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Guidance on a new idea for an engine design?

for my A-level computing project I was going to do an investigation into a type of engine design which incorporates Neural Networks that I haven't seen elsewhere; as part of this project I need to ...
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1answer
360 views

What are the strategies of Alphazero? [closed]

Alphazero is an amazing chess engine, one of the best in the world. It also has a more "human" playing style than other engines. Furthermore, understanding this engine might be vital to improving the ...
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1answer
661 views

What is Alpha Zero's Play Style? (Including its Openings and its Middlegame) [closed]

If you want to read about its opening strategy, it is down below the link. If you want to read about its middlegame strategy or basic play style, it is at the top I want to know how I can play more ...
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1answer
104 views

What kind of hand-crafted features do top performing family of engines use to evaluate a position?

AlphaZero paper which introduced the engine which allegidly outperformed stockfish mentioned the following: These programs evaluate positions using features handcrafted by human grandmasters and ...
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1answer
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Availability of AlphaZero and A. Grischuk's idea in the Anti-Moscow Gambit vs L. Ding

I was watching some Fide Candidates post play conference and Grischuk mentioned that a certain move was suggested by AlphaZero. So I was googling a little and have a stupid question. Where is ...
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3answers
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What is the Elo rating of Stockfish version that played AlphaZero?

AlphaZero has defeated Stockfish with all novelties and brilliant strategic sacrifices. But some people were disputing its win, because Stockfish was running on weak hardware (1 GB RAM), not access to ...
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2answers
4k views

List of how AlphaZero evaluates openings

In his process of learning Chess and getting stronger and stronger each second AlphaZero learned openings. Some were played often at the beginning, but lost in AlphaZero's popularity over the time (e....
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1answer
171 views

Alphazero Learning vs Playing mode

Is there any fundamental difference (in algorithms etc.) between Alphazero training by playing against itself and when playing a match against Stockfish? Or were the match games basically treated as ...
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1answer
626 views

Alphazero-Stockfish game 10 move 19

Given sufficient analysis time, say 24h per move on an decent computer, can current top chess engines (including Stockfish) eventually "see" that move 19 by Alphazero is actually good, and even ...
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1answer
659 views

What was the source of randomness in the Alpha Zero vs Stockfish match?

My understanding is that Alpha Zero's algorithm was fixed after the "learning" phase, so would it come up with the same move for every position? Was the variability in the match entirely due to a ...
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1answer
945 views

Did Stockfish have access to an opening book in its games against AlphaZero?

I have seen some commentary that implies that Stockfish did not have access to an opening book in its much-reported match with AlphaZero, but I cannot find a conclusive citation, and my inability to ...
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1answer
735 views

How does AlphaZero learn to evaluate a position it has never seen?

Following up from answers to: Understanding AlphaZero My question would be how the neural net "learns" what to do in a position it hasn't encountered. Saying the actual AZ executes an MCTS using the ...
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3answers
926 views

Lecture/Book on AlphaGo/AlphaZero

I am very interested in how AlphaGo resp. AlphaZero works. It seems to me, the related Google Papers are very dense and not easy to read. Is there any textbook or lecture that explains on a technical ...
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7answers
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Hardware used in AlphaZero vs Stockfish match

I understand that AlphaZero has to use a different kind of hardware than regular Stockfish. I would expect that the hardware has a large effect on engine strength. That's why I wonder whether there ...
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11answers
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How is Alpha Zero “more human”?

I have a possibly naive question about AlphaZero. I have seen it described as playing in a "more human" style than other computers, but whatever it does, it gains about 100 ELO points by doing it. ...
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Understanding AlphaZero

Very recently, the news came out that Alphabet's DeepMind research team have extended their machine learning engine to play both Shogi and chess. Apparently, after only a few hours of self-learning, ...