To play Chiidoku, place Chiikawas so there is one in every row, one in every column, one in every color area, and no placement violates the game’s current “cannot be placed next to each other” rule. Every tap should satisfy all four constraints at once.
Read the board before placing
Identify the rows, columns, and colored regions the board shows. Do not assume every color area has the same shape or number of cells. Note any Chiikawas already placed and treat their row, column, and area as closed.
Next, observe which neighboring cells the current tutorial or interface excludes. The official public description confirms a no-adjacency rule but does not define whether only shared edges or diagonals also count. Use the live game’s highlighting and response for the exact directions.
Check each candidate in order
If a cell survives all checks, it is a candidate, not automatically the answer. Prefer a cell forced because its row, column, or color area has no other legal candidate.
Make the first safe placement
Look for the most constrained unit: a row, column, or color area with the fewest surviving cells. If only one survives, check it again against the other three constraints and place it. Then stop and rescan.
This pause matters. The new placement closes a row, column, and color area, and may eliminate neighbors. Those consequences can force another cell far away. Continuing from memory without a full rescan is how a correct first move leads to an avoidable second mistake.
Repeat a complete turn
- Mark filled rows, columns, and color areas as closed.
- Apply the live adjacency exclusion around confirmed Chiikawas.
- Count surviving candidates in each open unit.
- Place only a forced candidate you can explain.
- Return to step one.
If the game offers marks or an undo control, learn them from the current device interface. Public pages do not document their exact inputs. On touch screens, pause at color borders and confirm the intended cell before tapping.
Understand Campaign, Endless, and streaks
Campaign is the numbered progression and currently advertises up to 400 levels. It starts with simpler puzzles and increases challenge, making it the best learning route. The official update event says the campaign expanded from the older 300-level state to 400.
Endless Mode uses randomly generated puzzles, has no level limit, and becomes more challenging. Use it after the solve loop is stable. Win streaks measure consecutive clears and a personal best, but public pages do not define exactly when a streak starts, resets, crosses modes, or persists across sessions.
Do not change the placement rules merely because the mode changes. No alternate foundation is publicly announced. Follow any extra live instruction if the mode presents one.
When you cannot find a forced cell
Recount rather than guess. A closed row or column may have been overlooked, or a neighbor exclusion may reduce a colored area further than you noticed. Compare candidate sets: when every candidate for an area lies in one row, other areas must avoid depending on that row for their own final placement.
If that still produces nothing, keep hypothetical reasoning separate from a real tap. Assume a candidate temporarily and trace whether any row, column, color area, or required placement is left with no legal cell. A contradiction rejects the assumption; it is not permission to submit an untested guess.
Read Chiidoku Solving Strategy for a longer deduction order and recovery method.
Avoid the two biggest rule mistakes
The first is using an older page that says adjacency is allowed. Current developer-controlled English text says Chiikawas cannot be placed next to one another. The second is importing another puzzle’s exact neighbor directions without checking Chiidoku. Honor the no-adjacency outcome, but let the live tutorial define its directions.
Also avoid treating the Minesweeper comparison as a command to reveal hidden numbers. The published Chiidoku rules describe placement constraints, not a complete copy of Minesweeper’s controls.
After your first clear
Clear several Campaign boards while naming the reason for each placement. Then inspect daily missions and the character collection if you want a short reward goal. The creator confirms daily-refresh missions, rewards, coins, and character unlocks, but their detailed values and menus remain live-game information.
When Campaign boards stop feeling automatic, use 400 Levels for session planning. When you want an endurance challenge, use Endless Mode. Keep Adjacency Rule nearby if old advice has made your candidate checks inconsistent.
Frequently asked questions
What is the goal of Chiidoku?
Complete the board with exactly one Chiikawa per row, column, and color area while respecting the current no-adjacency condition.
Should I guess when several cells remain?
No. Rescan closed units, neighbor exclusions, and candidate interactions. Use a contradiction test in notes before committing.
Are there always 400 cells or a fixed board size?
No such board dimension is published. The number 400 refers to the current Campaign level total, not a grid size.
What does “next to” mean?
The official page does not define the directions. Observe the current tutorial and interface to determine whether edges, diagonals, or both are excluded.
Where should a beginner start?
Start in Campaign, solve slowly, and move to Endless only after you can explain each placement.