Privacy Policy — ChessBot

Last updated: July 2026

What We Collect

We collect gameplay telemetry while you use the extension, tied to an anonymous per-install identifier (not linked to your name, email, chess.com username, or any other personal information). This may include:

• Move timing, accuracy, and engine-assistance patterns
• When and how analysis features are used during a game
• General gameplay context (game length, result, time control, rating)
• Extension performance and usage metrics

We do not collect your name, email, chess.com username, or IP address.

How We Use It — Two Distinct Purposes

We use this data for two separate purposes, each with its own basis:

1. Product analytics and coaching-quality improvement. We analyze telemetry internally to improve the extension's analysis features and understand usage patterns. This is the original purpose for which the data is collected.

2. Public research datasets. We may also process telemetry — including data collected before this policy was last updated — to produce de-identified datasets for academic research and publication (e.g., studies on engine-assistance detection in online chess). This is a distinct purpose from (1). Before any data is used this way, we apply de-identification steps specific to the research release, including bucketing exact ratings into ranges, removing per-install and per-session identifiers, generalizing collection timestamps, and excluding statistical outliers that could otherwise be individually identifiable (e.g., unusual rating gaps), so that released records cannot reasonably be linked back to an individual or a specific traceable game. We rely on the research-compatibility basis under applicable data protection law (GDPR Art 5(1)(b)/Art 89) for this further processing, with the above safeguards.

Data Sharing

We may publish or license de-identified, aggregated datasets — including to researchers, chess platforms, and integrity organizations — for purposes including academic publication. No install-linked or per-user data, and no data reasonably traceable to an individual game or player, is included in these releases.

Your Choice

If you'd prefer your historical data not be included in a public research release, contact us at boraofficial@duck.com before July 31, 2026 and we'll exclude it from future releases.

Changes

If we materially change what we collect, how we use it, or introduce a new processing purpose (such as a new research release), we'll notify you via an extension update notice describing the change before it takes effect.