OCTOBER 19, 2025 · PUZZLE #66
FAST to POOP.💩
One shortest route in 5 moves.
00
FAST
START01
CAST
LETTER 102
COST
LETTER 203
COOT
LETTER 304
COOP
LETTER 405
POOP
GOAL 💩Why this route takes 5 moves
FAST and POOP differ in 4 letter positions. The shortest accepted-word route needs 1 additional move; the first letter changes more than once.
Start by changing the first letter: FAST → CAST. Near the goal, COOP is one letter from POOP; the last move changes its first letter.
Every letter change
- FAST → CAST: change letter 1 from F to C.
- CAST → COST: change letter 2 from A to O.
- COST → COOT: change letter 3 from S to O.
- COOT → COOP: change letter 4 from T to P.
- COOP → POOP: change letter 1 from C to P.
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