Chiidoku Rules Hub
The four constraints that govern every board. Read once. Apply forever.
The four rules that govern every board
Chiidoku places one token on a colored grid. Four constraints decide every legal cell:
- One Chiikawa per row.
- One Chiikawa per column.
- One Chiikawa per color region.
- Adjacent Chiikawas are forbidden.
These rules never change between Campaign, Endless Mode, or any future variant. The difficulty comes from region shapes and candidate density, not from new constraints.
How this hub is organized
Start with How to Play if the four rules are new to you. Move to Adjacency Rule if you have been reading older guides that say adjacent tokens are allowed. Use Solving Strategy when campaign boards stop yielding to basic scans.
Bookmark this hub. When a patch lands, Updates will say if a rule changed. Until then, the four constraints above are the entire legal sheet.
Why the adjacency rule causes confusion
The current official English Roblox description says Chiikawas cannot be placed next to each other. Some older third-party pages say adjacent placements are allowed. Those older pages also tend to cite 300 campaign levels instead of the current 400. Use the current description and 400. Confirm the direction scope (edges only or edges plus diagonals) in the live game tutorial.
Beginner path
- How to Play — what the four constraints are and how to check a candidate.
- Adjacency Rule — the neighbor exclusion and its direction scope.
- Solving Strategy — forced cells, pointing, line confinement, and contradiction testing.
When to come back to this hub
- When an older guide produced a different answer than the game.
- When a new patch changes the experience description.
- When the campaign hits a difficulty spike and the basic scan stops working.
The solve guide is the practical companion to this hub. Read both together when a board refuses to yield.
Rules versus solving
The rules are fixed. The solving approach is a skill you build. Read the rules once to know what legal means. Practice the solving strategy to find legal cells faster. Those are different jobs and this wiki keeps them separate on purpose.
Frequently asked questions
Do the rules ever change?
No. Row, column, color uniqueness and the adjacency rule have been stable since launch. Any future change would appear in Updates.
Why is adjacency the most confusing rule?
Because the public wording does not define which directions count. The live tutorial shows the behavior. Confirm it there before applying a model from another puzzle.
Should I memorize all four rules before playing?
Yes. Read How to Play before your first board. Going in with all four constraints named stops bad habits before they start.
Can I skip the rules and just place tokens?
You can, but every misplaced Chiikawa will cost a heart. The solve guide shows how to use the rules to find forced cells. Skipping the rules is the expensive way to learn.
Frequently Asked Questions
Quick answers to the most common Chiidoku questions.
Do the rules ever change?
No. Row, column, color uniqueness and the adjacency rule have been stable since launch. Any future change would appear in Updates.
Why is adjacency the most confusing rule?
Because the public wording does not define which directions count. The live tutorial shows the behavior. Confirm it there before applying a model from another puzzle.
Should I memorize all four rules before playing?
Yes. Read How to Play before your first board. Going in with all four constraints named stops bad habits before they start.
Can I skip the rules and just place tokens?
You can, but every misplaced Chiikawa will cost a heart. The solve guide shows how to use the rules to find forced cells. Skipping the rules is the expensive way to learn.