Bulldoku Level 977: Walkthrough & Solution
Step-by-step Bulldoku level 977 guide (10×10). One pup per color, row and column, no touching. Difficulty 94.3.
Play Level 977Step-by-step logic
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. 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. 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. 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. Step: place pup (row 2, column 2)
After crosses, the pink region has only one legal cell — row 2, column 2. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 5 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. 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 7 8. 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 8 9. 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 9 10. 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 10 11. 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 11 12. 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 12 13. 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 13 14. 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 14 15. 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 15 16. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 16 17. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 17 18. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 18 19. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 19 20. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 20 21. Step: mark X in column 10
The coral region is confined to column 10. Mark illegal cells with X.
Board after step 21 22. 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 22 23. Step: place pup (row 9, column 10)
After crosses, the coral region has only one legal cell — row 9, column 10. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 23 24. Step: mark X in column 6
The blue region is confined to column 6. Mark illegal cells with X.
Board after step 24 25. Step: place pup (row 1, column 5)
After previous pups, row 1 has only one free cell — column 5. Place the cyan region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 25 26. Step: mark X in column 6
The blue region is confined to column 6. Mark illegal cells with X.
Board after step 26 27. Step: mark X in column 6
The blue region is confined to column 6. Mark illegal cells with X.
Board after step 27 28. Step: mark X in column 6
The blue region is confined to column 6. Mark illegal cells with X.
Board after step 28 29. Step: mark X in column 6
The blue region is confined to column 6. Mark illegal cells 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 in column 7
The lavender region is confined to column 7. Mark illegal cells with X.
Board after step 33 34. Step: mark X in column 7
The lavender region is confined to column 7. Mark illegal cells with X.
Board after step 34 35. Step: mark X in column 7
The lavender region is confined to column 7. Mark illegal cells with X.
Board after step 35 36. 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 36 37. 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 37 38. 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 38 39. 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 39 40. 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 40 41. Step: mark X in column 4
The yellow region is confined to column 4. Mark illegal cells with X.
Board after step 41 42. 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 42 43. 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 43 44. 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 44 45. 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 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: place pup (row 4, column 4)
After previous pups, column 4 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 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: place pup (row 8, column 6)
After previous pups, column 6 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 50 51. Step: place pup (row 6, column 7)
After crosses, the lavender region has only one legal cell — row 6, column 7. Place a pup there. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 51 52. Step: place pup (row 10, column 3)
After previous pups, column 3 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 52 53. Step: place pup (row 5, column 1)
After previous pups, column 1 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 53 54. Step: place pup (row 7, column 9)
After previous pups, row 7 has only one free cell — column 9. Place the green region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 54 55. Step: place pup (row 3, column 8)
After previous pups, row 3 has only one free cell — column 8. Place the mint region's pup here. Mark crosses along the row, column, and neighboring cells (see the board).
Board after step 55
Final solution
All pups placed correctly: R1 C5, R2 C2, R3 C8, R4 C4, R5 C1, R6 C7, R7 C9, R8 C6, R9 C10, R10 C3
Similar difficulty levels
FAQ
- How do I solve Bulldoku level 977?
- Follow the 55 steps above: find forced placements first, then mark impossible cells with X.
- Where can I play level 977 online?
- Click "Play Level 977" to open the free browser game with this exact board.