Poople #207: SPUN to POOP

Path analysis

This route reaches POOP in 5 moves. Breadth-first search reaches every route with fewer moves first, so POOP cannot be reached in fewer than 5 moves from SPUN.

Moves

5

Difficulty

Hard

Shortest paths

1

The dictionary has one shortest route for this puzzle.

1. Move 1: SPUN → SPUR — change the 4th letter from N to R.
2. Move 2: SPUR → SOUR — change the 2nd letter from P to O.
3. Move 3: SOUR → POUR — change the 1st letter from S to P.
4. Move 4: POUR → POOR — change the 3rd letter from U to O.
5. Move 5: POOR → POOP — change the 4th letter from R to P.