Subscription
Turn your games into a weekly training habit.
A one-off report finds your pattern. The subscription keeps working: every new game you play is re-analyzed each week, and your mistakes become a training loop that actually makes the pattern go away.
Weekly re-analysis
Every new game, analyzed
Each week we pull the games you have played since last time and analyze all of them, then show how your mistake rate is trending. You see whether you are actually improving, not just guessing.
Training library
Spaced repetition on your own mistakes
Your whole library, browsable by pattern, with the positions you got wrong resurfacing on a schedule until they stick. The free daily drill email keeps coming; this is everything around it.
Endgame trainer
Replay the endgames you threw away
Practice the exact endgames you misplayed against perfect tablebase play, with a plain-English answer whenever you want to ask why a move works.
Weekly video
One free opening video a week
A free personalized opening video credit every week, built from your own games. Unused credits bank up, and playing deeper into a line unlocks a fresh lesson.
Frequently asked questions
What does the monthly subscription include?
The $12/mo subscription turns Blackbox into a weekly training habit: every new game is re-analyzed each week with your mistake trend tracked, a spaced-repetition library resurfaces the positions you got wrong until they stick, you get the endgame trainer, and one free personalized opening video credit every week.
What is the endgame trainer?
A subscriber tool that lets you replay the exact endgames you misplayed in your own games, against perfect tablebase play, until you can convert them. You can also ask why a move works and get a plain-English explanation, which is a study aid and can be wrong.
What is the training library and spaced repetition?
An on-demand library of your own mistakes as puzzles, grouped by pattern, plus spaced repetition: positions you get wrong come back on a schedule until they stick. Each weekly re-analysis refills it with fresh mistakes from your latest games. The free daily drill email keeps coming for everyone.
Can I cancel any time?
Yes. Cancel from the Stripe billing portal whenever you want. When you cancel, your access continues to the end of the period you have already paid for.