Gambit Drill — Chess Opening Trainer
Copyright (c) 2026 the Gambit Drill owner. All rights reserved.

Proprietary source-available licence, version 1 (2026-09-29)

1. You may view this source code and run the application for your own
   personal, non-commercial use, including from the official app site and
   from a local copy.
2. You may not copy, modify, merge, publish, distribute, sublicense,
   sell, or create derivative works of this software or its content
   (repertoire, coach text, artwork), in whole or in part, without the
   owner's prior written permission, except for third-party material
   whose separate licence grants those rights.
3. Contributions: by submitting a pull request, patch, or suggestion,
   you grant the owner a perpetual, irrevocable, worldwide, royalty-free
   licence to use, modify, and distribute your contribution in Gambit
   Drill under any terms.
4. Third-party components and identified coach notes are licensed
   separately; see THIRD_PARTY_NOTICES.md. Nothing in this licence
   restricts rights granted by those licences for those materials.
5. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND.