Professor Layton and the Curious Village

Puzzle 050 (US): OTTF?

Original diagram for Puzzle 050 (US): OTTF?

Ten cards read O, T, T, F… with one left blank, so which letter is missing?

Chapter
Chapter 4
Location
Fork in the Road · Marco
Picarats
20 picarats
Type
Write Answer
Region
US / North America · EU version: Number Maze
Hint 1: A gentle nudge. Tap to flip.
Hint 1

There are exactly ten cards. That number is a clue.

Tap to flip back
Hint 2: The key idea. Unlocks after the previous card is flipped.
Hint 2

The letters aren't random. They're the starts of words you learned very young.

Tap to flip back
Hint 3: Almost there. Unlocks after the previous card is flipped.
Hint 3

Count out loud from one and listen to the first letter of each word.

Tap to flip back
Answer: See the answer. Unlocks after the previous card is flipped.
Answer

The answer is F.

Tap to flip back
Solution, FAQ and sources

Solution

The letters are the first letters of the numbers one to ten: **O**ne, **T**wo, **T**hree, **F**our, **F**ive, **S**ix, **S**even, **E**ight, **N**ine, **T**en.

The blank card is in the spot for five, so the missing letter is **F**.

About this puzzle

Ten small cards each have one letter on them, starting O, T, T, F… One card is blank. Which letter belongs on it?

Unofficial fan guide, not affiliated with LEVEL-5. Puzzle description, hints and solution written by Hint by Hint.

Similar puzzles: Puzzle 050: Number Maze, Puzzle 046: Star in the Sky, Puzzle 045: Puzzled Aliens, Puzzle 056: The Lazy Guard

All Professor Layton and the Curious Village puzzles

FAQ

What is the answer to Puzzle 050, OTTF?, in Professor Layton and the Curious Village?

The answer is F. This is the North American version of Puzzle 050.

Where do you find Puzzle 050 in Curious Village?

Puzzle 050 appears in Chapter 4, in the Fork in the Road area, when you talk to Marco.

How many picarats is Curious Village Puzzle 050 worth?

20 picarats.

Is Puzzle 050 the same in the European version?

No. In the European (UK) version, Puzzle 050 is Number Maze, a grid where each square tells you how far to move.

Sources

Facts checked on November 14, 2026

Unofficial fan guide. Not affiliated with, endorsed by, or sponsored by LEVEL-5 Inc. Professor Layton, The New World of Steam, and all related names, characters, and trademarks are the property of their respective owners.