Bulldoku Level 999: Walkthrough & Solution
Step-by-step Bulldoku level 999 guide (10×10). One pup per color, row and column, no touching. Difficulty 119.3.
Play Level 999Step-by-step logic
1. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 1 2. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 2 3. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 3 4. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 4 5. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 5 6. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 6 7. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 7 8. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 8 9. 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 9 10. 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 10 11. 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 11 12. 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 12 13. 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 13 14. 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 14 15. 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 15 16. 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 16 17. 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 17 18. 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 18 19. 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 19 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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 34 35. 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 35 36. 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 36 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. 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. 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. 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. 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. 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. 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 43 44. 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 44 45. 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 45 46. 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 46 47. 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 47 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. 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. 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 50 51. 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 51 52. 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 52 53. 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 53 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. Step: mark X in column 5
The pink region is confined to column 5. Mark illegal cells with X.
Board after step 55 56. 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 56 57. 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 57 58. 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 58 59. 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 59 60. 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 60 61. 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 61 62. Step: mark X in column 6
The yellow region is confined to column 6. Mark illegal cells with X.
Board after step 62 63. 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 63 64. 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 64 65. 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 65 66. 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 66 67. 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 67 68. 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 68 69. 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 69 70. 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 70 71. 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 71 72. 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 72 73. Step: place pup (row 4, column 6)
After previous pups, row 4 has only one free cell — column 6. Place the yellow region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 73 74. 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 74 75. Step: place pup (row 6, column 7)
After previous pups, row 6 has only one free cell — column 7. Place the lavender region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 75 76. 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 76 77. 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 77 78. 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 78 79. 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 79 80. Step: place pup (row 10, column 8)
After previous pups, column 8 has only one free cell — row 10. Place the cyan region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 80 81. Step: place pup (row 9, column 10)
After previous pups, row 9 has only one free cell — column 10. Place the coral region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 81 82. Step: place pup (row 7, column 9)
After crosses, the green region has only one legal cell — row 7, column 9. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 82 83. Step: place pup (row 1, column 3)
After previous pups, column 3 has only one free cell — row 1. Place the cyan region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 83 84. Step: place pup (row 2, column 5)
After previous pups, row 2 has only one free cell — column 5. Place the pink region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 84 85. Step: place pup (row 3, column 2)
After previous pups, column 2 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 85 86. Step: place pup (row 8, column 4)
After previous pups, column 4 has only one free cell — row 8. Place the blue region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 86
Final solution
All pups placed correctly: R1 C3, R2 C5, R3 C2, R4 C6, R5 C1, R6 C7, R7 C9, R8 C4, R9 C10, R10 C8
Similar difficulty levels
FAQ
- How do I solve Bulldoku level 999?
- Follow the 86 steps above: find forced placements first, then mark impossible cells with X.
- Where can I play level 999 online?
- Click "Play Level 999" to open the free browser game with this exact board.