base
Every candidate hashes center with a 64-bit little-endian counter appended: sha256( center ‖ counter ).
ascii8
One byte per character. A match means the SHA-256 hash prefix spells the word in ASCII hex.
targets
up, in, out, down, left, over, under, right — every direction ground from center, each successively longer prefix match kept.
counters
Winning counter values from 25,860 to 2.4 trillion, within a 248 budget per search.