Bulldoku Level 442: Walkthrough & Solution
Step-by-step Bulldoku level 442 guide (7×7). One pup per color, row and column, no touching. Difficulty 45.3.
Play Level 442Step-by-step logic
1. Step: place pup (row 1, column 6)
After crosses, the cyan region has only one legal cell — row 1, column 6. 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 6, column 5)
After crosses, the lavender region has only one legal cell — row 6, column 5. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 2 3. Step: place pup (row 5, column 2)
After crosses, the orange region has only one legal cell — row 5, column 2. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 3 4. Step: mark X in row 7
The green region is confined to row 7. Mark X on cells in that row that belong to other regions.
Board after step 4 5. Step: mark X (line reservation)
Several regions share the same rows or columns — other cells on those lines are impossible. Mark them with X.
Board after step 5 6. Step: place pup (row 4, column 7)
After previous pups, column 7 has only one free cell — row 4. Place the yellow region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 6 7. Step: logical elimination
Placing a pup on the trial cell would leave a region with no legal move. Mark that cell with X.
Board after step 7 8. 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 8 9. Step: logical elimination
Placing a pup on the trial cell would leave a region with no legal move. Mark that cell with X.
Board after step 9 10. Step: place pup (row 2, column 1)
After previous pups, column 1 has only one free cell — row 2. 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 3, column 4)
After previous pups, column 4 has only one free cell — row 3. Place the mint region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 11 12. Step: place pup (row 7, column 3)
After previous pups, column 3 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 12
Final solution
All pups placed correctly: R1 C6, R2 C1, R3 C4, R4 C7, R5 C2, R6 C5, R7 C3
Similar difficulty levels
FAQ
- How do I solve Bulldoku level 442?
- Follow the 12 steps above: find forced placements first, then mark impossible cells with X.
- Where can I play level 442 online?
- Click "Play Level 442" to open the free browser game with this exact board.