Bulldoku Level 600: Walkthrough & Solution
Step-by-step Bulldoku level 600 guide (9×9). One pup per color, row and column, no touching. Difficulty 53.4.
Play Level 600Step-by-step logic
1. Step: place pup (row 2, column 4)
After crosses, the pink region has only one legal cell — row 2, column 4. 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 9, column 1)
After crosses, the coral region has only one legal cell — row 9, column 1. 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 8, column 3)
After crosses, the blue region has only one legal cell — row 8, column 3. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 3 4. Step: place pup (row 7, column 9)
After crosses, the green region has only one legal cell — row 7, column 9. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 4 5. Step: place pup (row 4, column 8)
After crosses, the yellow region has only one legal cell — row 4, column 8. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 5 6. Step: mark X in column 2
The mint region is confined to column 2. Mark illegal cells with X.
Board after step 6 7. Step: mark X in row 5
The orange region is confined to row 5. Mark X on cells in that row that belong to other regions.
Board after step 7 8. Step: mark X in row 6
The lavender region is confined to row 6. Mark X on cells in that row that belong to other regions.
Board after step 8 9. Step: place pup (row 3, column 2)
After previous pups, column 2 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 9 10. 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 10 11. Step: place pup (row 5, column 5)
After previous pups, row 5 has only one free cell — column 5. Place the orange 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 6, column 7)
After previous pups, row 6 has only one free cell — column 7. Place the lavender region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 12 13. Step: place pup (row 1, column 6)
After previous pups, row 1 has only one free cell — column 6. Place the cyan region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 13
Final solution
All pups placed correctly: R1 C6, R2 C4, R3 C2, R4 C8, R5 C5, R6 C7, R7 C9, R8 C3, R9 C1
Similar difficulty levels
FAQ
- How do I solve Bulldoku level 600?
- Follow the 13 steps above: find forced placements first, then mark impossible cells with X.
- Where can I play level 600 online?
- Click "Play Level 600" to open the free browser game with this exact board.