Blackmarlin is a chess engine fully written in Rust.

Related tags

Game development rust chess ai parallel-computing neural-networks minimax-alpha-beta-pruning
Overview

Blackmarlin

WIP UCI Chess Engine

Blackmarlin is a chess engine fully written in Rust.

Make sure to compile the chess engine with cargo build --release or run it with cargo run --release in order to get the maximum strength out of the engine. If build fails, remove the jem option and try again.

Blackmarlin doesn't come with a built-in GUI. The recommended way of playing against the engine is to compile it locally and use it along with a Chess GUI that supports the UCI protocol.

Blackmarlin also includes an optional Neural Network as a replacement for hand crafted evaluation. In order to enable this feature, add "nnue" to the feature flags: cargo build --release --features 'nnue'

Using the neural network results in much stronger play.

The repository used for NN training is NNUE Marlin

Comments
  • 2 problems

    2 problems

    Dear Doruk,

    When running the exe you provide it shows only two UCI options, Hash and Threads. How can I switch on/off the NNUE? Oh, just read that it can't be deactivated.

    And using your recommendation cargo build --release --features "nnue jem" I get the error message "none of the selected packages contains these features: jem".

    When trying to compile it simply with cargo build --release I get some warnings and also the error message "error[E0432]: unresolved import crate::bm::nnue --> src\bm\uci.rs:13:16"

    How shall I proceed?

    Gabor Szots member of the CCRL testing group

    opened by SzotsGabor 7
  • Compiling

    Compiling

    Using the recommended command line (cargo build --release --features 'nnue') I get this error message:

    error: none of the selected packages contains these features: 'nnue', did you mean: nnue?

    I can successfully compile it with the simple cargo build --release but I am not sure the NNUE is included in the exe. Also, I get many warnings (mostly about unused variables).

    opened by SzotsGabor 3
  • compiling v6.0 fails on Linux

    compiling v6.0 fails on Linux

    normally i'm able to compile rust code, but your source gives me errors :

    $ make
EVALFILE=./nn/default.bin cargo +stable rustc --release -- -C target-cpu=native --emit link=BlackMarlin
   Compiling cozy-chess-types v0.1.4
   Compiling blackmarlin v0.1.0 (/home/roelof/Compiled/blackmarlin)
   Compiling text_io v0.1.10
   Compiling arrayvec v0.7.2
   Compiling cozy-chess v0.2.2
error: values of the type `[[i16; 544108393]; 1936876918]` are too big for the current architecture

error: could not compile `blackmarlin` due to previous error
make: *** [makefile:11: rule] Error 101

    NOTE: your asset v3 works for me! (v4 didn't, the others i didn't try .. eg. which asset binary is avx2?)

    I'm on Xubuntu 21.10

    opened by tissatussa 2
  • compile warning on Linux and versioning

    compile warning on Linux and versioning

    hi,

    i see that you update the main code regularly .. compiling it on Linux succeeds, but i get this warning :

    ~/Compiled/blackmarlin$ make
EVALFILE=./nn/default.bin cargo rustc --release -- -C target-cpu=native --emit link=BlackMarlin
   Compiling cozy-chess-types v0.1.4
   Compiling blackmarlin v0.1.0 (/home/roelof/Compiled/blackmarlin)
   Compiling arrayvec v0.7.2
   Compiling text_io v0.1.10
   Compiling cozy-chess v0.2.2
warning: unused import: `crate::bm::bm_util::h_table`
 --> src/bm/bm_search/search.rs:8:5
  |
8 | use crate::bm::bm_util::h_table;
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

warning: `blackmarlin` (bin "blackmarlin") generated 1 warning
    Finished release [optimized] target(s) in 25.14s

    the compiled binary is 28.8 Mb and shows v6.0 .. all other recent versions also show v6.0 .. it seems you don't use a development version, you just update "main" .. could it be handy to sub-version your next releases ? Eg. v6.0.1 etc.

    [ i'm on Xubuntu 22.04 ]

    opened by tissatussa 1
  • Bump regex from 1.5.4 to 1.5.5

    Bump regex from 1.5.4 to 1.5.5

    ⚠️ Dependabot is rebasing this PR ⚠️

    Rebasing might not happen immediately, so don't worry if this takes some time.

    Note: if you make any changes to this PR yourself, they will take precedence over the rebase.

    Bumps regex from 1.5.4 to 1.5.5.

    Changelog

    Sourced from regex's changelog.

    1.5.5 (2022-03-08)

    This releases fixes a security bug in the regex compiler. This bug permits a vector for a denial-of-service attack in cases where the regex being compiled is untrusted. There are no known problems where the regex is itself trusted, including in cases of untrusted haystacks.

    Commits

    Dependabot compatibility score

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    dependencies 
    opened by dependabot[bot] 1
  • Build fails on windows

    Build fails on windows

    Hello

    I just git cloned the repo and then tried running the command in the readme: cargo build --release --features nnue. Doing this I get the error:

    error: none of the selected packages contains these features: nnue

    So seeing instead I tried running without the flag, i.e. just cargo build --release but then I get the error:

    thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: NotPresent', build.rs:8:39

    So it looks like there is no network file, and that's what is going wrong.

    opened by WannesMalfait 1
  • embedded NN with v5.0 ?

    embedded NN with v5.0 ?

    i succesfully compiled your source on Linux .. i used git clone to get the source files and after compiling the UCI info states v5.0 ?! The file is 4.5 Mb -- what about the NN ? Normally i see NNUE files of 20 Mb ..

    opened by tissatussa 1
  • Compilation of 3.0 dev (r446) warning(s)

    Compilation of 3.0 dev (r446) warning(s)

    While compiling 3.0dev a few times the last week recently it has this warning which looks a bit worrying? (the other warnings are there since always AFAIK - mosty about unused imports/macros/variables)

    The binary itself compiles fine.

    warning: unreachable statement
   --> src\bm\bm_eval\evaluator.rs:384:9
    |
377 |               return Evaluation::new(self.nnue.feed_forward(board, 0) * turn + NNUE_TEMPO);
    |               ---------------------------------------------------------------------------- any code following this expression is unreachable
...
384 | /         let eval = self.evaluate_psqt(board, Piece::Pawn)
385 | |             + self.evaluate_psqt(board, Piece::Knight)
386 | |             + self.evaluate_psqt(board, Piece::Bishop)
387 | |             + self.evaluate_psqt(board, Piece::Rook)
...   |
391 | |             + self.evaluate_bishops(board)
392 | |             + self.evaluate_threats(board);
    | |___________________________________________^ unreachable statement
    |
    = note: `#[warn(unreachable_code)]` on by default
    opened by rwbc 1
  • Compiling error for old hardware

    Compiling error for old hardware

    Hi Doruk,

    I tried compiling the current BlackMarlin version and I get an error which still wasn't there at least in mid February. BTW thanks for still releasing no popcnt binaries. I just want to test sometimes if I can get some nps more with my ssse3 or sse4.1 native instructions w/o popcount, or creating dev versions for me.

    Is there a way to avoid that error?

    Guenther

    Guenther Simon@CAPPUCCINO MINGW64 ~/blackmarlin
$ make
EVALFILE=./nn/default.bin cargo rustc --release -- -C target-cpu=native --emit link=BlackMarlin.exe
   Compiling cozy-chess-types v0.1.4
   Compiling blackmarlin v0.1.0 (C:\msys64\home\Guenther Simon\blackmarlin)
   Compiling arrayvec v0.7.1
   Compiling text_io v0.1.9
   Compiling cozy-chess v0.2.1
error: values of the type `[[i16; 544108393]; 1936876918]` are too big for the current architecture

error: could not compile `blackmarlin` due to previous error
make: *** [makefile:11: rule] Error 101
    opened by rwbc 10
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