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5×5 · 9 steps · difficulty 26.6

Bulldoku Level 53: Walkthrough & Solution

Step-by-step Bulldoku level 53 guide (5×5). One pup per color, row and column, no touching. Difficulty 26.6.

Play Level 53

Step-by-step logic

  1. 1. Step: place pup (row 1, column 5)

    After crosses, the cyan region has only one legal cell — row 1, column 5. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 1

  2. 2. Step: mark X in row 2

    The pink region is confined to row 2. Mark X on cells in that row that belong to other regions.

    Board after step 2

  3. 3. Step: mark X in column 4

    The yellow region is confined to column 4. Mark illegal cells with X.

    Board after step 3

  4. 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. 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. 6. 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 6

  7. 7. Step: place pup (row 2, column 3)

    After previous pups, row 2 has only one free cell — column 3. Place the pink 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 5, column 2)

    After previous pups, column 2 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 8

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

    After previous pups, row 4 has only one free cell — column 4. Place the yellow region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 9

Final solution

All pups placed correctly: R1 C5, R2 C3, R3 C1, R4 C4, R5 C2

Solved board

Similar difficulty levels

FAQ

How do I solve Bulldoku level 53?
Follow the 9 steps above: find forced placements first, then mark impossible cells with X.
Where can I play level 53 online?
Click "Play Level 53" to open the free browser game with this exact board.

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