Bulldoku Level 633: Walkthrough & Solution

Step-by-step Bulldoku level 633 guide (10×10). One pup per color, row and column, no touching. Difficulty 55.9.

Play Level 633

Step-by-step logic

  1. 1. Step: place pup (row 8, column 7)

    After crosses, the blue region has only one legal cell — row 8, column 7. 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 2, column 8)

    After crosses, the pink region has only one legal cell — row 2, column 8. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 2
  3. 3. Step: place pup (row 10, column 9)

    After crosses, the cyan region has only one legal cell — row 10, column 9. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 3
  4. 4. Step: place pup (row 7, column 10)

    After crosses, the green region has only one legal cell — row 7, column 10. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).

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

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

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

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

    Board after step 6
  7. 7. Step: mark X in column 2

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

    Board after step 7
  8. 8. Step: mark X in column 2

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

    Board after step 8
  9. 9. Step: mark X in column 1

    The lavender region is confined to column 1. Mark illegal cells with X.

    Board after step 9
  10. 10. Step: mark X in column 1

    The lavender region is confined to column 1. Mark illegal cells with X.

    Board after step 10
  11. 11. Step: place pup (row 1, column 3)

    After crosses, the cyan region has only one legal cell — row 1, column 3. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 11
  12. 12. Step: place pup (row 3, column 6)

    After crosses, the mint region has only one legal cell — row 3, column 6. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 12
  13. 13. Step: place pup (row 4, column 2)

    After previous pups, column 2 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 13
  14. 14. Step: place pup (row 6, column 1)

    After crosses, the lavender region has only one legal cell — row 6, column 1. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 14
  15. 15. Step: place pup (row 9, column 5)

    After crosses, the coral region has only one legal cell — row 9, column 5. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 15
  16. 16. 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 16

Final solution

All pups placed correctly: R1 C3, R2 C8, R3 C6, R4 C2, R5 C4, R6 C1, R7 C10, R8 C7, R9 C5, R10 C9

Solved board

Similar difficulty levels

FAQ

How do I solve Bulldoku level 633?
Follow the 16 steps above: find forced placements first, then mark impossible cells with X.
Where can I play level 633 online?
Click "Play Level 633" to open the free browser game with this exact board.