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Questions tagged [leela]

Related to the chess engine Leela, also known as Lc0 or Leela Chess Zero, an open-source adaptation of Deep Mind's AlphaZero.

28 questions
28
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8 answers

Would an ensemble of chess engines beat the best one?

In many areas such as prediction and classification, ensemble methods tend to outperform individual methods. This made me wonder if it would make sense to pick a few of the top chess engines and work with them together to make a stronger one. Let us…
Dennis Jaheruddin
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3 answers

Why is Leela so good at beating Stockfish in the French/Slav?

I notice Lc0 is especially good against Stockfish in French / Slav pawn structures. However, I don't understand why. Here're a couple of games where Leela smoothly outplays Stockfish. Can anyone explain what Stockfish is doing wrong? Link to this…
Allure
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2 answers

Can an Irwin Cheat Detector catch a user who is using a Leela chess bot for cheating?

I’m a big fan of chess cheat detection apps, like Irwin that was created by lichess.org. But I heard that there is a new bot called Leela that is teaching herself how to play chess, and to think in a human-like way. Is that true, and are there any…
shar
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2 answers

Train Leela Chess against myself

Is it possible to play against a "virgin" Leela Chess engine to see how many games it takes it to beat me? That is, can I train Leela Chess by playing against it myself?
Olórin
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7
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3 answers

Why are Leela's fans so passionate?

The neural-network engine Leela is a relatively new one. It's also got some extremely passionate fans. For example they write things like this: Wait 5-6 months, and we will see SF8 on uber-duper logarithmic in cores Elo-wise 32 cores being smashed…
Allure
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6
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2 answers

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 crushing Stockfish. What can be the reason for…
acye
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5
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4 answers

Where was Stockfish's fatal mistake in this game against Leela?

This is a game from the TCEC Season 18 superfinal, which Leela won with a beautiful positional bind. [FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"] [Event "TCEC Season 18 - Superfinal"] [Site "https://tcec-chess.com"] [Date…
Allure
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1 answer

Can I download early versions of Leela chess zero?

I want to play weaker versions of Leela. It would be good to play some really early versions of the net. Is there a repository available where I can download them?
Superluminal
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5
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2 answers

Is it possible to combine CPU and GPU engines to use the other's principal variation?

This is a speculative question since I don't know if such an engine is even plausible. The idea: we'll start Stockfish and Leela at the same time using both my CPU and GPU. Within a fraction of a second, both engines will output principal…
Allure
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5
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1 answer

Leela Chess PUCT Mechanism

How do we know w_i which is not possible to calculate using the tree search only? From the lc0 slide, w_i is equal to summation of subtree of V ? How is this equivalent to winning ?
kevin
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5
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2 answers

Leela Chess Zero - UCI engine

What is current use status of Leela for practical player? Is it already working well as UCI? Could anybody give some insight on strength with various thinking times, especially in analysis mode? As leela uses different thinking process, I must ask…
hoacin
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Did Leela Zero miss a win in this position?

Did Leela Zero miss a win in this position from game 106 of the Computer Chess Championship, on move 83 with White to move? [FEN "8/2p1r3/2P4k/1P1pB2p/K2NbP1R/P5r1/8/8 w - - 0 1"] Here, Leela Zero played Bxc7? for their 83rd move. I went deep to…
Stefano
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4
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1 answer

Help me choose hardware configuration

I am preparing to buy a new desktop computer. I would like to use it for chess analysis with both StockFish and Lc0. My budget is slightly above 2K euros. QUESTIONS: This is my first time choosing configuration for Lc0, so I do not know where to…
AlwaysLearningNewStuff
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Creating a New Neural Network for chess

I'd like to have my own chess engine similar to Leela for personal use. I’d want it to have a decent strength, let’s say 2k, and be able to play with it. I'm wondering if I can use Leela to create a new network that is trained on select number of…
Michaelx
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3
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Understanding Leela Chess Zero (Lc0) "verbose-move-stats output"

I'm trying to fully understand the Leela's verbose-move-stats output: Are the statements below correct? The move that will be played is e2e4, since it's the one with the greatest count of visits (N: 128). It also happens to have the greatest…
Murilo Perrone
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