No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
python-chess has 5.9M monthly downloads and 3K GitHub stars. Version 1.999, first published in 2013.
It is actively maintained under a copyleft license, last released in Oct 2020.
It is used by 59 tracked packages, including chess-detect, wood-league-worker and blindbase.
GitHub topics include chess, fen and epd.
Package Insights
Package Risks
- No releases in 2049 days despite active commits
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
90
Popularity
75
Adoption
100
Community
75
Provenance
0
How the maintenance status was determined
Last commit
30 days ago
Monthly downloads
5,867,412
•
Active
Activity within 30 days
Stable
Activity within 31-180 days
Minimal
Activity within 181-365 days, or no activity data
At Risk
No activity for > 365 days, but > 10,000 monthly downloads
Archived
Repository flagged as archived on GitHub
How the popularity category was determined
Monthly downloads
5,867,412
Stars
2,840
Stars per 1k downloads
0.48
Industry Standard
> 10,000,000 monthly downloads
•
Hidden Gem
< 0.5 stars per 1k downloads and > 100,000 monthly downloads
Community Favorite
> 5 stars per 1k downloads
Rising Star
Balanced ratio of stars to downloads
Unknown
Fewer than 1,000 monthly downloads, or no star data
How download momentum is calculated
Week daily avg
345,229
Month daily avg
195,580
Momentum
+76.5%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
Not specified
Cutting Edge
Minimum supported version is 3.12 or newer
Modern
Minimum supported version is 3.9, 3.10, or 3.11
Legacy
Supports 3.8 or older (or Python 2)
•
Unknown
No requires_python specified or unparseable
Package does not declare a minimum Python version.
License categories
License
GPL-3.0+
Permissive
MIT, Apache, BSD, ISC, Unlicense, CC0, etc.
•
Copyleft
GPL, LGPL, AGPL, MPL, EPL, etc.
Proprietary
Commercial, all rights reserved, custom EULAs
Unknown
No license specified, or none of the above match
How the release cadence was determined
Last release
2080 days ago
Total releases
99
Releases/year
7.5
Rapid
Last release within 365 days and > 12 releases/year
Regular
Last release within 365 days
Slow
Last release 366-730 days ago
•
Stalled
Last release > 730 days ago, or no releases
Unknown
No usable release date available
How contributor risk was determined
Contributors
73
Monthly downloads
5,867,412
High Load
≤ 2 contributors and ≥ 50,000 monthly downloads
Moderate Load
< 10 contributors and ≥ 500,000 monthly downloads
Low Load
< 25 contributors and ≥ 5,000,000 monthly downloads, or sole maintainer with ≥ 10,000 monthly downloads
•
Balanced
Enough contributors for the package's popularity
Unknown
No contributor data available
Engagement
91
Issue Burden
13.7
per 1k stars
Discussions
24.3
per 1k stars
Fork Ratio
12.8%
contrib / forks
Stale Release
2049d
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
338.5K
Windows
602
macOS
130
Python Versions
3.12
98.3%
333.5K
3.13
0.9%
3.0K
3.11
0.5%
1.8K
3.10
0.1%
430
3.14
0.1%
330
Top Countries
1.
US
322.3K
US
2.
SG
3.0K
SG
3.
CA
1.8K
CA
4.
PL
1.6K
PL
5.
SE
1.5K
SE
6.
AU
1.3K
AU
7.
NO
1.2K
NO
8.
IE
1.2K
IE
9.
BE
1.1K
BE
10.
IN
860
IN
Dependencies
0
No dependencies
Used By
59
- chess-detect
- wood-league-worker
- blindbase
- kriegspiel
- openix
- bchess
- efn
- eslams-core
- chess-coach-mcp
- cython-chess
- pydp
- chess-mcp-server
- clawmeets
- chessminal
- lczerolens
- edgevox
- async-lichess-sdk
- chess-gif
- ez-chess
- chess-scoresheet-generator
- openmas
- llmchess
- t-games
- chess-annotator
- chess-mcp
- termy-chess
- clichessdrill
- chessli
- noprune
- chester
- play-chess-with-a-webcam
- pysimplegui-chess
- llmcheesbench
- chesspal-mcp-engine
- ailed-chess
- chess-pressure
- chess-post-analyst
- gym-chess
- fastchessenv
- chessanimate
- premovr
- chevy
- chessf
- tournamentmaster
- chess-game-review
- chess-to-sqlite
- piglab
- harmon
- chess-widgets
- sideboard
Package Information
License
GPL-3.0+
First Release
May 10, 2013
Last Release
5 years ago
Last Commit
1 month ago
Latest Version
1.999
Total Releases
99
Contributors
73
Open PRs
9
Archived
No
Author
Niklas Fiekas
Wheels
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh