I removed the space between the private keys.
See how the first 4 digits of the private key are known?
Now guess 66!

Astrology for btc... nothing on this gif makes sense. Think about radius, angle, spiraling direction, order. If this is true, do with all the addresses. Can you do with all, not with the last 3 puzzles?
but idk, i had an idea
is there anyways to extend
https://privatekeyfinder.io/bitcoin-puzzle/random-keys/66 instead of 50 keys per time, to like idk maybe 500, will reduce by 10.
ik ik, it will maybe takes more time than a normal vanity addresss search
my idea is not only find the 66# puzzle, but maybe if you cross with other wallets with balance if more random wallets can be see at once. Its simple and lite for any pc
You'll need to wait until the end of the galaxy we live in (times many billions) until you stumble upon a key with wallet balance.