Poople #355: REIN to POOP

Path analysis

This route reaches POOP in 6 moves. Breadth-first search reaches every route with fewer moves first, so POOP cannot be reached in fewer than 6 moves from REIN.

Moves

6

Difficulty

Hard

Shortest paths

1

The dictionary has one shortest route for this puzzle.

1. Move 1: REIN → RAIN — change the 2nd letter from E to A.
2. Move 2: RAIN → LAIN — change the 1st letter from R to L.
3. Move 3: LAIN → LOIN — change the 2nd letter from A to O.
4. Move 4: LOIN → LOON — change the 3rd letter from I to O.
5. Move 5: LOON → LOOP — change the 4th letter from N to P.
6. Move 6: LOOP → POOP — change the 1st letter from L to P.