Bulldoku Level 258: Walkthrough & Solution

Step-by-step Bulldoku level 258 guide (6×6). One pup per color, row and column, no touching. Difficulty 36.1.

Play Level 258

Step-by-step logic

  1. 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. 2. 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 2
  3. 3. Step: mark X in column 2

    The cyan region is confined to column 2. Mark illegal cells with X.

    Board after step 3
  4. 4. Step: mark X in column 2

    The cyan region is confined to column 2. Mark illegal cells with X.

    Board after step 4
  5. 5. Step: mark X in column 2

    The cyan region is confined to column 2. Mark illegal cells with X.

    Board after step 5
  6. 6. 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 6
  7. 7. Step: place pup (row 1, column 2)

    After previous pups, row 1 has only one free cell — column 2. Place the cyan region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 7
  8. 8. Step: place pup (row 4, column 5)

    After crosses, the yellow region has only one legal cell — row 4, column 5. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 8
  9. 9. Step: place pup (row 3, column 1)

    After previous pups, row 3 has only one free cell — column 1. Place the mint 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 5, column 3)

    After previous pups, row 5 has only one free cell — column 3. Place the orange 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 6)

    After previous pups, row 6 has only one free cell — column 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 C4, R3 C1, R4 C5, R5 C3, R6 C6

Solved board

Similar difficulty levels

FAQ

How do I solve Bulldoku level 258?
Follow the 11 steps above: find forced placements first, then mark impossible cells with X.
Where can I play level 258 online?
Click "Play Level 258" to open the free browser game with this exact board.