Available now
Puzzles & Activities
Sudoku and maze puzzle books made for quiet focus, screen-free breaks, and thoughtful everyday moments.
- Sudoku Puzzle Book
- Classic Maze
- 3D Cube Maze
- Illustrated Center Maze
- Hexagonal Maze
KOTRINEN Studio
Small creations for thoughtful everyday moments.
The official home of KOTRINEN, gathering current releases and shop updates in one place.
Current Releases
Puzzle books from KOTRINEN.
Where to find us
Official updates here, marketplace listings there.
Etsy
Visit the KOTRINEN shop
Amazon
Coming soon
About
KOTRINEN is a small studio for thoughtful everyday moments.
Current releases include Sudoku and maze puzzle books. More official updates will appear here as they are ready.