“I know I've made this mistake before.”
You have. You just don't remember when.
Forgetting isn't a hole in your chess — it's how memory works. You've played hundreds of games and only a handful stayed with you. The rest are still there, and they still have something to tell you. Bring them over from Chess.com and Lichess and ask your own history a question. As many games as you like, free.
- Ask your history a question. Every Caro-Kann. Every loss from a winning position.
- Find the turning points. Jump straight to the moves that changed the game.
- See what keeps happening. The mistakes that come back — and the ones that don't.