• 1. Exactly one person is riding a bike by a brand with the same initial of his/her name. That's not the boy with the yellow helmet.
  • 2. A girl is riding a Grooves.
  • 3. Harold is on the Yamada or has a XL helmet.
  • 4. Yoshi's helmet is one size larger than Anne's one. None of them has the white one.
  • 5. Greta's helmet is one size larger than a boy's one, but one size smaller than the other boy's one.
  • 6. The blue helmet is Small or Large. However, it doesn't belong to the person on Aprily.
  • 7. Harold's helmet is XL or white.
  • 8. The person on the Honshu has Medium or Large helmet.
  • 9. If the green helmet is Large, then the white helmet is on a Grooves. However, the green helmet is not on an Aprily.
  • 1. Exactly one person is riding a bike by a brand with the same initial of his/her name. That's not the boy with the yellow helmet.
  • 2. A girl is riding a Grooves.
  • 3. Harold is on the Yamada or has a XL helmet.
  • 4. Yoshi's helmet is one size larger than Anne's one. None of them has the white one.
  • 5. Greta's helmet is one size larger than a boy's one, but one size smaller than the other boy's one.
  • 6. The blue helmet is Small or Large. However, it doesn't belong to the person on Aprily.
  • 7. Harold's helmet is XL or white.
  • 8. The person on the Honshu has Medium or Large helmet.
  • 9. If the green helmet is Large, then the white helmet is on a Grooves. However, the green helmet is not on an Aprily.

Observation: This table is automatically filled accordingly to the grid.

How to play

  • Start by reading all the clues;
  • Find the most basic clues and use the grid to mark them on it;
  • Use logic deduction to find propositions that are not explicit;
  • Click on a clue to mark it as used;
  • The answer table is filled automatically.

More Logic Grid Puzzles

See our logic grid puzzles list.

Need help?

If, after reading the instructions, you still don't understand how to play, try playing one of these simpler logic grids puzzles. They are "very very easy".

Printable version

You can download the PDF version of this logic grid puzzle.

Visit our Printable Logic Grid Puzzles page to download and print other Logic Grid Puzzles.

More games

Einstein's Riddle
Einstein's Riddle

Einstein said that only 2% of the world could solve this problem. Can you do it?

Self-Referential Quiz
Self-Referential Quiz

Quizzes where you only need logic to solve them.

Zebra Puzzles
Zebra Puzzles

Use logic deductions to solve problems that are similar to the Einstein's Riddle.

Logic Equations
Logic Equations

Using logic and basic algebras, solve the equations.