bulletchess

bulletchess is a Python module for playing, analyzing, and building engines for chess. Unlike other chess libraries in Python, the core of bulletchess is written in C, allowing it to be much faster than alternatives.

Overview

At a high level, bulletchess includes:

A complete game model with intuitive representations for pieces, moves, and positions.
Extensively tested legal move generation, application, and undoing.
Parsing and writing of positions specified in Forsyth-Edwards Notation (FEN), and moves specified in both Long Algebraic Notation and Standard Algebraic Notation.
Methods to determine if a position is check, checkmate, stalemate, and each specific type of draw.
Efficient hashing of positions using Zobrist Keys.
A Portable Game Notation (PGN) file reader
Utility functions for writing engines.

pip install bulletchess

Read the docs

Metadata

Release files for bulletchess 0.4.0

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for bulletchess 0.4.0
File	Size	Uploaded
bulletchess-0.4.0.tar.gz	114.3 kB	Sep 7, 2025	Details

Built distributions (wheels)

Table of built distributions (wheels) for bulletchess 0.4.0
File	Interpreter	ABI	Platform	Reset
bulletchess-0.4.0-cp313-cp313-win_amd64.whl 99.6 kB Sep 7, 2025	CPython 3.13	CPython 3.13	Windows x86-64	Details
bulletchess-0.4.0-cp313-cp313-musllinux_1_2_x86_64.whl 366.1 kB Sep 7, 2025	CPython 3.13	CPython 3.13	Linux musl 1.2+ x86-64	Details
bulletchess-0.4.0-cp313-cp313-musllinux_1_2_aarch64.whl 373.4 kB Sep 7, 2025	CPython 3.13	CPython 3.13	Linux musl 1.2+ ARM64	Details
bulletchess-0.4.0-cp313-cp313-manylinux_2_17_x86_64.manylinux2014_x86_64.manylinux_2_28_x86_64.whl 381.2 kB Sep 7, 2025	CPython 3.13	CPython 3.13	Linux glibc 2.17+ x86-64, Linux glibc 2.28+ x86-64	Details
bulletchess-0.4.0-cp313-cp313-manylinux_2_17_aarch64.manylinux2014_aarch64.manylinux_2_28_aarch64.whl 388.0 kB Sep 7, 2025	CPython 3.13	CPython 3.13	Linux glibc 2.17+ ARM64, Linux glibc 2.28+ ARM64	Details
bulletchess-0.4.0-cp313-cp313-macosx_11_0_arm64.whl 127.8 kB Sep 7, 2025	CPython 3.13	CPython 3.13	macOS 11.0+ ARM64	Details
bulletchess-0.4.0-cp313-cp313-macosx_10_13_x86_64.whl 131.9 kB Sep 7, 2025	CPython 3.13	CPython 3.13	macOS 10.13+ x86-64	Details
bulletchess-0.4.0-cp313-cp313-ios_13_0_arm64_iphonesimulator.whl 127.4 kB Sep 7, 2025	CPython 3.13	CPython 3.13	iOS 13.0+ ARM64 Simulator	Details
bulletchess-0.4.0-cp313-cp313-ios_13_0_arm64_iphoneos.whl 124.2 kB Sep 7, 2025	CPython 3.13	CPython 3.13	iOS 13.0+ ARM64 Device	Details

Total release size: 2.2 MB

Release files / bulletchess-0.4.0.tar.gz

Download URL	bulletchess-0.4.0.tar.gz
Size	114.3 kB
Tags	Source
SHA-256 checksum How to use checksums	`a3ba3c29208039cc12e388da377e493406afa74cde26f9756b1d1c6563a130fb`
BLAKE2b-256 checksum How to use checksums	`9f599159194e4b6ca8beafb0e1cf9f048ca679c5f683a472daa2338666bda863`
Upload date	Sep 7, 2025
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.1.0 CPython/3.13.7`

Release files / bulletchess-0.4.0-cp313-cp313-win_amd64.whl

Download URL	bulletchess-0.4.0-cp313-cp313-win_amd64.whl
Size	99.6 kB
Tags	CPython 3.13 Windows x86-64
SHA-256 checksum How to use checksums	`ec770eeda94ce4f8fa6efae0bfce812288c443f95c0194c3da6e5412fc29a05c`
BLAKE2b-256 checksum How to use checksums	`09577c6b5c13881760b8a5d5d6014ccdbf63afa71ad266781c0980b3c5b81880`
Upload date	Sep 7, 2025
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.1.0 CPython/3.13.7`

Release files / bulletchess-0.4.0-cp313-cp313-musllinux_1_2_x86_64.whl

Download URL	bulletchess-0.4.0-cp313-cp313-musllinux_1_2_x86_64.whl
Size	366.1 kB
Tags	CPython 3.13 Linux musl 1.2+ x86-64
SHA-256 checksum How to use checksums	`8f354d4f3f26e0b4ea7e762adb875748875c3520c74485949668e89521783c1f`
BLAKE2b-256 checksum How to use checksums	`f6e85a4aa579e6c2b4b06e8a41774cb4ed807ee3523f0717d706e42967bff91b`
Upload date	Sep 7, 2025
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.1.0 CPython/3.13.7`

Release files / bulletchess-0.4.0-cp313-cp313-musllinux_1_2_aarch64.whl

Download URL	bulletchess-0.4.0-cp313-cp313-musllinux_1_2_aarch64.whl
Size	373.4 kB
Tags	CPython 3.13 Linux musl 1.2+ ARM64
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BLAKE2b-256 checksum How to use checksums	`ca5c8a5ffb8e891b7eb7e35ad27ce60af60880c28b48c85bc34f151c64f6e516`
Upload date	Sep 7, 2025
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.1.0 CPython/3.13.7`

Release files / bulletchess-0.4.0-cp313-cp313-manylinux_2_17_x86_64.manylinux2014_x86_64.manylinux_2_28_x86_64.whl

Download URL	bulletchess-0.4.0-cp313-cp313-manylinux_2_17_x86_64.manylinux2014_x86_64.manylinux_2_28_x86_64.whl
Size	381.2 kB
Tags	CPython 3.13 Linux glibc 2.17+ x86-64 Linux glibc 2.28+ x86-64
SHA-256 checksum How to use checksums	`a5976e37d89e8c526d15380abdfbe21c703b374380df76593c193f396e1bec89`
BLAKE2b-256 checksum How to use checksums	`54d58ff2df7486ac431caf032ee4f30ca7c69139762cba8c0c68f22455a704eb`
Upload date	Sep 7, 2025
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.1.0 CPython/3.13.7`

Release files / bulletchess-0.4.0-cp313-cp313-manylinux_2_17_aarch64.manylinux2014_aarch64.manylinux_2_28_aarch64.whl

Download URL	bulletchess-0.4.0-cp313-cp313-manylinux_2_17_aarch64.manylinux2014_aarch64.manylinux_2_28_aarch64.whl
Size	388.0 kB
Tags	CPython 3.13 Linux glibc 2.17+ ARM64 Linux glibc 2.28+ ARM64
SHA-256 checksum How to use checksums	`e29631e1eaffbf22cb10f27059d4ba25b1f2f83eb422fb1d9e64500b1109e6a9`
BLAKE2b-256 checksum How to use checksums	`a395b3db88cba0dda37c0f3edb864423653a06dde036d2182e439c73eccc8bff`
Upload date	Sep 7, 2025
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.1.0 CPython/3.13.7`

Release files / bulletchess-0.4.0-cp313-cp313-macosx_11_0_arm64.whl

Download URL	bulletchess-0.4.0-cp313-cp313-macosx_11_0_arm64.whl
Size	127.8 kB
Tags	CPython 3.13 macOS 11.0+ ARM64
SHA-256 checksum How to use checksums	`3948b7ee9ae50b1c71b8642014e3165543a6ef4142e4b7326fb0a9ba2c9a9b3d`
BLAKE2b-256 checksum How to use checksums	`59f805ccf13f7551775b503d1053f9d08f72e5debd4b3fb94efd0c80f7a8f993`
Upload date	Sep 7, 2025
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.1.0 CPython/3.13.7`

Release files / bulletchess-0.4.0-cp313-cp313-macosx_10_13_x86_64.whl

Download URL	bulletchess-0.4.0-cp313-cp313-macosx_10_13_x86_64.whl
Size	131.9 kB
Tags	CPython 3.13 macOS 10.13+ x86-64
SHA-256 checksum How to use checksums	`e9f2d0d72a9d69076526be118fa47412b983775781453db62dad869d96f902c9`
BLAKE2b-256 checksum How to use checksums	`6884f127519fc9d1b58f52d9603e81f27c2bc5d2476aeea718f5fe41a1823128`
Upload date	Sep 7, 2025
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.1.0 CPython/3.13.7`

Release files / bulletchess-0.4.0-cp313-cp313-ios_13_0_arm64_iphonesimulator.whl

Download URL	bulletchess-0.4.0-cp313-cp313-ios_13_0_arm64_iphonesimulator.whl
Size	127.4 kB
Tags	CPython 3.13 iOS 13.0+ ARM64 Simulator
SHA-256 checksum How to use checksums	`ca19fcbf57ef4a36be46ad7e37b3d90445440f02ac70574c9f431dca54aa5743`
BLAKE2b-256 checksum How to use checksums	`e5573f48972e15738d53df1689a65f8064e551f7fda26f12e9133da3c7c09a7e`
Upload date	Sep 7, 2025
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.1.0 CPython/3.13.7`

Release files / bulletchess-0.4.0-cp313-cp313-ios_13_0_arm64_iphoneos.whl

Download URL	bulletchess-0.4.0-cp313-cp313-ios_13_0_arm64_iphoneos.whl
Size	124.2 kB
Tags	CPython 3.13 iOS 13.0+ ARM64 Device
SHA-256 checksum How to use checksums	`f9c18d4d85a24a4fa277045dcd3fd0df045610efe3c2c12c56baa4409db88593`
BLAKE2b-256 checksum How to use checksums	`9acdbb348d2f30c782d6624dbe30125666d05f439627767f31722ce9975e2ee2`
Upload date	Sep 7, 2025
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.1.0 CPython/3.13.7`