Inspired by this great question by Uvc (actually, it's the same logic but with different words).
How fast one can get from EIGHT to SEVEN?
The rules are the same:
- You are only allowed to change one letter at a time.
- You have to keep the word length the same.
- At each step of the way, you must have a legitimate English word. Thus, something like going from "EIGHT" to "EIGHN" is not a valid step, but from "FIGHT" to "NIGHT" would be.
Here is an example 11-step way (but with very obscure words involved): eight-sight-sighs-sikhs-sikas-simas-simar-sizar-sizer-siver-sever-seven.
Answer
Here's my 8-step solution:
EIGHT SIGHT SIGHS SINHS SINES SENES SEMES SEMEN SEVEN
(I don't know if SINHS - plural for SINH ("hyperbolic sine function") is an accepted word)
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