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We have now GPUs, Quad-cores, i7s, i5s, i3s, and so on. However, I am wondering what is the best chess engine for 1 CPU. ChessBase offers Fritz 11 for free. Fritz 11 works very well with 1 CPU. Also, Stockfish has many versions, which one is the best for 1 CPU? Same question for Komodo. Komodo 12 is free, but what is the best Komodo for 1 CPU?

I tried Stockfish 14.1 and put my computer in trouble, even though is a new desktop, but with a Celeron processor. (Intel(R) Celeron(R) J4105 CPU @ 1.50GHz). It is impossible to analyze in my computer with Stockfish 14 because the computer freezes. I tried to use Stockfish 9 and Stockfish 10 but I did not find them in the Stockfish website. I only found Stockfish 14.

Update 12/24

I installed the last free version of Komodo (Komodo 12), and it is running without freezing my computer. I can analyze with this engine without problems. The same with Fritz 11. However, Stockfish 14 freezes my computer.

I am running the chess engines over the free GUI ChessBase Reader 17. You can find it in the following link:

https://en.chessbase.com/post/chessbase-reader-2017

You can download the free version of Komodo from the website: https://komodochess.com/

Update 12/25/2021

I found the old versions of Stockfish!

  1. Go to https://stockfishchess.org/download/
  2. Other Versions (At the end of the page)
  3. Old (archived) releases of Stockfish

Fritz 1 CPU

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    Do you mean "best chess engine for 1 core?" Dec 24, 2021 at 6:05
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    GPU is short for Graphics Processing Unit, which doesn't affect any calculations that engines do (CPU is what matters). Quad-core means a CPU has 4 cores. i7, i5, i3 is Intel's naming scheme for their CPUs Dec 24, 2021 at 6:36
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    What is most likely meant is best single process, single thread chess engine. Even with only a single core you can run multiple processes and or threads - I am not saying this is a good idea here, I am just being a pedant.
    – Ian Bush
    Dec 24, 2021 at 9:16
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    @justANewbie these days a major class of engines (Leela, Scorpio, Ara, etc) make use of GPU resources.
    – Allure
    Dec 24, 2021 at 16:15
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    Stockfish 14.1 comes in two versions: one fast, but which requires a modern CPU (the AVX2 version), and one slower (the POPCNT version). You are probably trying the AVX2 version on a CPU that doesn't support AVX2 instructions -- try the POPCNT version instead.
    – user30536
    Dec 25, 2021 at 6:32

1 Answer 1

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Stockfish is the unchallenged best CPU engine right now (it's most probably the best engine, period, as well). This applies regardless of the hardware you have, as long as it's a fair comparison - i.e. you run all your competing CPU engines on the same hardware.

Choose the latest version of Stockfish, or if you prefer, choose the latest stable release (v14.1).

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  • Hi! I tried Stockfish 14.1 and puts my computer in trouble, even though is a new one, but with a Celeron processor. (Intel(R) Celeron(R) J4105 CPU @ 1.50GHz). It is impossible to analyze with it because the computer freezes. I tried to use Stockfish 9 and Stockfish 10 but I did not find them in the Stockfish website. I only found Stockfish 14.
    – Beginner
    Dec 24, 2021 at 16:17
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    @Beginner for technical assistance I'd recommend asking a Stockfish developer - groups.google.com/g/fishcooking?pli=1
    – Allure
    Dec 24, 2021 at 16:19
  • Thank you for your advice!
    – Beginner
    Dec 24, 2021 at 16:20
  • I found the old versions of Stockfish! This link is from the Stockfish website. I will try with them. Here is the link: dropbox.com/sh/75gzfgu7qo94pvh/AAB3yfXx6PkUfHbBr4r_RwhGa
    – Beginner
    Dec 24, 2021 at 16:31
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    just set the number of cores. sf defaults to using all your cores, but you can tell it to only use 1 Dec 30, 2021 at 1:47

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