Bulldoku Level 959: Walkthrough & Solution

Step-by-step Bulldoku level 959 guide (10×10). One pup per color, row and column, no touching. Difficulty 88.6.

Play Level 959

Step-by-step logic

  1. 1. Step: mark X in row 1

    The cyan region is confined to row 1. Mark X on cells in that row that belong to other regions.

    Board after step 1
  2. 2. Step: mark X in row 1

    The cyan region is confined to row 1. Mark X on cells in that row that belong to other regions.

    Board after step 2
  3. 3. Step: mark X in row 1

    The cyan region is confined to row 1. Mark X on cells in that row that belong to other regions.

    Board after step 3
  4. 4. Step: mark X in row 1

    The cyan region is confined to row 1. Mark X on cells in that row that belong to other regions.

    Board after step 4
  5. 5. Step: mark X in row 1

    The cyan region is confined to row 1. Mark X on cells in that row that belong to other regions.

    Board after step 5
  6. 6. Step: mark X in row 1

    The cyan region is confined to row 1. Mark X on cells in that row that belong to other regions.

    Board after step 6
  7. 7. Step: mark X in column 8

    The pink region is confined to column 8. Mark illegal cells with X.

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

    The pink region is confined to column 8. Mark illegal cells with X.

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

    The pink region is confined to column 8. Mark illegal cells with X.

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

    The pink region is confined to column 8. Mark illegal cells with X.

    Board after step 10
  11. 11. Step: mark X in column 8

    The pink region is confined to column 8. Mark illegal cells with X.

    Board after step 11
  12. 12. Step: mark X in column 8

    The pink region is confined to column 8. Mark illegal cells with X.

    Board after step 12
  13. 13. Step: mark X in column 8

    The pink region is confined to column 8. Mark illegal cells with X.

    Board after step 13
  14. 14. Step: mark X in column 7

    The yellow region is confined to column 7. Mark illegal cells with X.

    Board after step 14
  15. 15. Step: mark X in column 7

    The yellow region is confined to column 7. Mark illegal cells with X.

    Board after step 15
  16. 16. Step: mark X in column 7

    The yellow region is confined to column 7. Mark illegal cells with X.

    Board after step 16
  17. 17. Step: mark X in column 7

    The yellow region is confined to column 7. Mark illegal cells with X.

    Board after step 17
  18. 18. Step: mark X in column 7

    The yellow region is confined to column 7. Mark illegal cells with X.

    Board after step 18
  19. 19. Step: mark X in column 7

    The yellow region is confined to column 7. Mark illegal cells with X.

    Board after step 19
  20. 20. 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 20
  21. 21. 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 21
  22. 22. 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 22
  23. 23. 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 23
  24. 24. 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 24
  25. 25. 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 25
  26. 26. 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 26
  27. 27. 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 27
  28. 28. 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 28
  29. 29. 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 29
  30. 30. 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 30
  31. 31. 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 31
  32. 32. 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 32
  33. 33. 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 33
  34. 34. Step: place pup (row 6, column 6)

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

    Board after step 34
  35. 35. Step: place pup (row 5, column 1)

    After previous pups, row 5 has only one free cell — column 1. Place the orange region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 35
  36. 36. Step: mark X in column 2

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

    Board after step 36
  37. 37. 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 37
  38. 38. 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 38
  39. 39. 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 39
  40. 40. 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 40
  41. 41. 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 41
  42. 42. 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 42
  43. 43. Step: mark X in row 10

    The cyan region is confined to row 10. Mark X on cells in that row that belong to other regions.

    Board after step 43
  44. 44. Step: mark X in row 10

    The cyan region is confined to row 10. Mark X on cells in that row that belong to other regions.

    Board after step 44
  45. 45. Step: mark X in row 10

    The cyan region is confined to row 10. Mark X on cells in that row that belong to other regions.

    Board after step 45
  46. 46. 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 46
  47. 47. Step: place pup (row 10, column 9)

    After previous pups, row 10 has only one free cell — column 9. Place the cyan region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 47
  48. 48. 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 48
  49. 49. 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 49
  50. 50. Step: place pup (row 2, column 8)

    After previous pups, row 2 has only one free cell — column 8. Place the pink region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 50
  51. 51. Step: place pup (row 3, column 5)

    After previous pups, row 3 has only one free cell — column 5. Place the mint region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 51
  52. 52. Step: place pup (row 1, column 4)

    After previous pups, row 1 has only one free cell — column 4. Place the cyan region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 52
  53. 53. Step: place pup (row 4, column 7)

    After previous pups, row 4 has only one free cell — column 7. Place the yellow region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 53
  54. 54. 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 54
  55. 55. Step: place pup (row 9, column 2)

    After previous pups, column 2 has only one free cell — row 9. Place the coral region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 55
  56. 56. 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 56
  57. 57. Step: place pup (row 8, column 10)

    After previous pups, row 8 has only one free cell — column 10. Place the blue region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).

    Board after step 57

Final solution

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

Solved board

Similar difficulty levels

FAQ

How do I solve Bulldoku level 959?
Follow the 57 steps above: find forced placements first, then mark impossible cells with X.
Where can I play level 959 online?
Click "Play Level 959" to open the free browser game with this exact board.