• 1. Only the 13 years old kid has the same initial in his name and color of the belt.
  • 2. Only the orange belt owner has the same initial in his name and in the prefecture he is from.
  • 3. Nobody has the same initial in the color of his belt and in the prefecture he is from.
  • 4. Osamu is 1 year older than the kid from Yamaguchi.
  • 5. Yuki's belt is 1 degree lower than Osamu's one.
  • 6. Genjo's belt is 1 degree higher than the belt of the kid from Wakayama.
  • 7. The kid from Gunma is 1 year older than the green belt kid.
  • 8. If the white belt kid is from Gunma, then Yuki is 11.
  • 1. Only the 13 years old kid has the same initial in his name and color of the belt.
  • 2. Only the orange belt owner has the same initial in his name and in the prefecture he is from.
  • 3. Nobody has the same initial in the color of his belt and in the prefecture he is from.
  • 4. Osamu is 1 year older than the kid from Yamaguchi.
  • 5. Yuki's belt is 1 degree lower than Osamu's one.
  • 6. Genjo's belt is 1 degree higher than the belt of the kid from Wakayama.
  • 7. The kid from Gunma is 1 year older than the green belt kid.
  • 8. If the white belt kid is from Gunma, then Yuki is 11.

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

Zebra Puzzles
Zebra Puzzles

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

Einstein's Riddle
Einstein's Riddle

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

Kyudoku
Kyudoku

Choose nine unique number using one simple rule.

Sudoku
Sudoku

Play the classic japanese logic game.