Climb from the top word to the bottom word, changing one letter at a time.

The rules

• Each step changes exactly one letter. Letters stay in place; you can’t reorder them.
• Every step must be a real four-letter word.
• You can’t use the same word twice.

How to play

• Type your next word and tap Add. The changed letter is highlighted.
• Undo takes back your last step.
• Par is the fewest steps possible. Reach the bottom word in any number of steps to earn today’s green check; matching par is bragging rights.

Tip: look at which letters the two words already share and keep those fixed as long as you can.