Bulldoku Level 331: Walkthrough & Solution
Step-by-step Bulldoku level 331 guide (7×7). One pup per color, row and column, no touching. Difficulty 40.2.
Play Level 331Step-by-step logic
1. Step: place pup (row 6, column 7)
After crosses, the lavender region has only one legal cell — row 6, column 7. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 1 2. Step: place pup (row 3, column 6)
After crosses, the mint region has only one legal cell — row 3, column 6. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 2 3. Step: mark X in row 2
The pink region is confined to row 2. Mark X on cells in that row that belong to other regions.
Board after step 3 4. Step: mark X in row 1
The cyan region is confined to row 1. Mark X on cells in that row that belong to other regions.
Board after step 4 5. Step: mark X in row 1
The cyan region is confined to row 1. Mark X on cells in that row that belong to other regions.
Board after step 5 6. Step: mark X in row 2
The pink region is confined to row 2. Mark X on cells in that row that belong to other regions.
Board after step 6 7. Step: place pup (row 4, column 4)
After crosses, the yellow region has only one legal cell — row 4, column 4. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 7 8. Step: place pup (row 7, column 5)
After previous pups, column 5 has only one free cell — row 7. Place the green region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 8 9. Step: place pup (row 1, column 1)
After previous pups, column 1 has only one free cell — row 1. Place the cyan region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 9 10. Step: place pup (row 2, column 3)
After previous pups, row 2 has only one free cell — column 3. Place the pink region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 10 11. Step: place pup (row 5, column 2)
After previous pups, column 2 has only one free cell — row 5. Place the orange region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 11
Final solution
All pups placed correctly: R1 C1, R2 C3, R3 C6, R4 C4, R5 C2, R6 C7, R7 C5
Similar difficulty levels
FAQ
- How do I solve Bulldoku level 331?
- Follow the 11 steps above: find forced placements first, then mark impossible cells with X.
- Where can I play level 331 online?
- Click "Play Level 331" to open the free browser game with this exact board.