I've found that the only way I can reliably create focus of late is to put music on. It's as though the music prevents my mind from wandering and/or wondering because it is already being consumed
Now it seems progress has become literally impossible because the chess move + the captcha includes digits that add up to more than 25. I guess having to restart is intended to be part of the game, or is this a bug?
I believe the British Airways site still does something similar to this, or it did until very recently if it's been fixed. Add a password that is too long, it gets truncated and the truncated version saved with no warning or error.
It took me several password reset attempts to realise what was going on, as my literally just set and password manager-saved password didn't work.
I think in BA's case the password input also had a character limit on it, which is ultimately how I realised what was happening, even though there was no info anywhere that such a limit existed.
There is an FAQ on each page with a question "What's the time frame for this analysis?", and the answer is posts and comments from within the last two years