Last updated: June 2026
Backbox Chess provides engine-driven chess analysis reports, personalized training drills, and AI-generated opening videos based on game data you provide or authorize us to fetch from Chess.com or Lichess. By using Backbox Chess you agree to these terms.
Reports are generated using Stockfish engine analysis and are informational only. They do not constitute professional chess coaching advice. Improvement in your chess play depends on your own study and practice. We do not guarantee any specific improvement outcome.
Opening videos are personalized chess tutorial videos generated from your game data using AI tools including Google Gemini (script), Microsoft Edge TTS (voiceover), and OpenAI Whisper (timecode alignment). The script and voiceover are AI-generated. They are reviewed for accuracy but we do not guarantee they are free of errors. Videos are rendered via AWS Lambda and delivered to you via a time-limited download link.
Opening videos are not authoritative chess instruction. AI-generated scripts may contain inaccuracies including incorrect move evaluations, misstated threats or tactics, or errors in position descriptions. You should verify any claims made in a video against your own analysis or a qualified chess instructor before relying on them for study or improvement.
Download links expire 48 hours after delivery. You are responsible for saving your video before the link expires. We are not obligated to re-render or re-deliver a video after the link has expired, though we may do so at our discretion.
Videos are personalized to you and are non-transferable.
Any opening video created through Backbox Chess - whether purchased, earned through a free credit, or generated through the social-share program - may be posted to Backbox Chess social media accounts, which may include Facebook, Instagram, TikTok, and YouTube under the ChessJitsu brand. By requesting or receiving a video through any of these paths, you consent to this posting. This consent cannot be withdrawn after the video has been posted.
When a video is created, you may choose whether your chess username is displayed in the video or anonymized. This is the only customization available for social posting. You do not have the right to approve, reject, or request removal of the video once it has been posted to a social platform.
Videos posted to social platforms are subject to those platforms' own community guidelines and content policies. Backbox Chess is not responsible for the removal, demotion, or restriction of any video by a social platform. In particular, content posted via the TikTok API is subject to TikTok's Community Guidelines and may be removed or restricted by TikTok independently of any action by Backbox Chess.
Opening video scripts and voiceovers are generated by artificial intelligence tools. All videos posted to social media platforms include the platform's required AI content disclosure label where applicable. You acknowledge that the content is AI-generated and not produced by a human chess instructor.
All purchases are final. No refunds are issued under any circumstances. This includes analysis reports, opening videos, and any future products or add-ons offered through Backbox Chess. By completing a purchase you acknowledge and agree to this no-refund policy.
Payments are processed by Stripe. Backbox Chess does not store your payment card details.
You are responsible for the accuracy of any chess username or game data you provide. You must have the right to share any PGN files you upload. We do not claim ownership of your game data. By using the service you grant Backbox Chess a license to process your game data to provide the analysis, drill, and video services described above.
By providing a chess username or uploading game data, you grant Backbox Chess a license to use your chess username, game data, and derived analysis in videos posted to social media platforms as described in the Social media posting consent section above. This license includes the right to display your chess username (unless you opt for anonymization when the video is created) in publicly posted video content.
You agree to indemnify, defend, and hold harmless Backbox Chess and its owner from any claims, damages, losses, or expenses (including reasonable legal fees) arising from: (a) content you submit to the service, including game data, PGN files, or chess usernames that you did not have the right to use; (b) your use of any video or analysis output generated by the service; (c) your violation of these terms.
The service is provided as-is. We make no guarantees of uptime, accuracy, or fitness for any particular purpose. Engine analysis reflects Stockfish's evaluation at a given depth and may differ from other engines or human assessment.
If you believe any content on Backbox Chess or posted by Backbox Chess to social media infringes your copyright, you may submit a notice to our designated agent at blackboxchess@gmail.com.
Your notice should include: a description of the copyrighted work you believe has been infringed; the URL or location of the allegedly infringing content; your contact information; a statement that you have a good faith belief the use is not authorized by the copyright owner; and a statement under penalty of perjury that the information in your notice is accurate and that you are authorized to act on behalf of the copyright owner.
We will review valid notices and take appropriate action, which may include removing or disabling access to the content in question.
Do not attempt to disrupt, scrape, overload, or reverse-engineer the service. Do not submit fraudulent payment information or attempt to obtain reports or videos without valid payment. We may terminate access for any user who violates these terms.
We may update these terms from time to time. Continued use of the service after changes are posted constitutes acceptance of the updated terms. The date at the top of this page reflects when the terms were last updated.
Questions: blackboxchess@gmail.com