Change one word into another by changing exactly one letter.
Addition
word → world
Removal
read → red
Substitution
told → fold
Any of the above plus rearrangement
real → lake ( r → k, then rearrange)
No limit on word length
at → a
Rearrangement alone is not allowed
deal → lead
Single words only (even if the two words often go together) However, hyphenated words are customarily allowed.
Proper nouns are not allowed
tease → Texas Allowed, however, if it is also a regular noun, e.g., eve, mike, job,
and customarily allowed in derivative form, e.g., Texan.
If we reach a dead end (consensus that no new word can be found), go back to the most recent word that offers a way forward. (Dead ends are extremely rare. Be patient; usually someone will find an unexpected way out.)
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