Bulldoku Level 544: Walkthrough & Solution
Step-by-step Bulldoku level 544 guide (7×7). One pup per color, row and column, no touching. Difficulty 50.7.
Play Level 544Step-by-step logic
1. Step: place pup (row 2, column 5)
After crosses, the pink region has only one legal cell — row 2, column 5. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 1 2. 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 2 3. 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 3 4. 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 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: 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 6 7. 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 7 8. 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 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: 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 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 11 12. Step: mark X in column 1
The cyan region is confined to column 1. Mark illegal cells with X.
Board after step 12 13. Step: mark X in column 1
The cyan region is confined to column 1. Mark illegal cells with X.
Board after step 13 14. Step: mark X in column 1
The cyan region is confined to column 1. Mark illegal cells with X.
Board after step 14 15. 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 15 16. Step: place pup (row 1, column 1)
After previous pups, row 1 has only one free cell — column 1. Place the cyan region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 16 17. Step: place pup (row 3, column 2)
After previous pups, row 3 has only one free cell — column 2. Place the mint region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 17 18. Step: place pup (row 4, column 6)
After crosses, the yellow region has only one legal cell — row 4, column 6. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 18 19. Step: place pup (row 5, column 4)
After previous pups, column 4 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 19
Final solution
All pups placed correctly: R1 C1, R2 C5, R3 C2, R4 C6, R5 C4, R6 C7, R7 C3
Similar difficulty levels
FAQ
- How do I solve Bulldoku level 544?
- Follow the 19 steps above: find forced placements first, then mark impossible cells with X.
- Where can I play level 544 online?
- Click "Play Level 544" to open the free browser game with this exact board.