Bulldoku Level 266: Walkthrough & Solution

Step-by-step Bulldoku level 266 guide (6×6). One pup per color, row and column, no touching. Difficulty 36.3.

Play Level 266

Step-by-step logic

  1. 1. Step: place pup (row 4, column 1)

    After crosses, the yellow region has only one legal cell — row 4, column 1. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 1
  2. 2. Step: place pup (row 1, column 2)

    After crosses, the cyan region has only one legal cell — row 1, column 2. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 2
  3. 3. 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 3
  4. 4. 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 4
  5. 5. 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 5
  6. 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. 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. 8. Step: place pup (row 2, column 6)

    After previous pups, row 2 has only one free cell — column 6. Place the pink region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 8
  9. 9. Step: place pup (row 5, column 5)

    After previous pups, column 5 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 9
  10. 10. 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 10
  11. 11. Step: place pup (row 6, column 3)

    After previous pups, column 3 has only one free cell — row 6. Place the lavender 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 C2, R2 C6, R3 C4, R4 C1, R5 C5, R6 C3

Solved board

Similar difficulty levels

FAQ

How do I solve Bulldoku level 266?
Follow the 11 steps above: find forced placements first, then mark impossible cells with X.
Where can I play level 266 online?
Click "Play Level 266" to open the free browser game with this exact board.