Sheesh, nobody said anything about carpentry when the mentalfloss.com Brain Game Wednesday Wordplay challenge came around. Don't worry - you shouldn't hurt your thumb solving this one.

By changing one letter in each step to form English words, and leaving all other letters in their original positions, convert NAIL into HEAD in the fewest possible steps.

N A I L
_ _ _ _
_ _ _ _
_ _ _ _
_ _ _ _
H E A D

Here is a 5-step SOLUTION.

A 5-STEP SOLUTION:

N A I L
H A I L
H A I R
H E I R
H E A R
H E A D

Did you come up with a different sequence of words? Feel free to share your solution with us in the comments below. Thanks for playing!