Meowdoku Level 857 Step-by-Step Logic Walkthrough & Explained
Follow the replay below. Each board shows the result after applying that step.
Meowdoku Level 857 Step 1: Mark X at R5 C1, R5 C2, and R5 C3 + 2 more: a region is locked to this row
The pink region must use row 5. No other region can use that row. Mark the highlighted cells with X.
Meowdoku Level 857 Step 2: Place cat at R4 C1: only legal cell
Place a cat here at . The magenta region has no other legal cell.
Meowdoku Level 857 Step 3: Mark X at R1 C8, R2 C8, and R3 C8 + 1 more: a region is locked to this column
The blue region must use column 8. No other region can use that column. Mark the highlighted cells with X.
Meowdoku Level 857 Step 4: Mark X at R6 C4, R6 C5, and R6 C6 + 3 more: rows or columns are reserved
The rose, blue, and sky blue regions must use rows 6, 7, and 8. No other region can use those rows. Mark the highlighted cells with X.
Meowdoku Level 857 Step 5: Mark X at R3 C4: cats cannot touch
Every possible cat for row 2 conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 857 Step 6: Mark X at R2 C6: cats cannot touch
Every possible cat for row 3 conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 857 Step 7: Mark X at R1 C5: assuming a cat there leaves a region empty
Suppose held a cat in the yellow region. That assumption would leave the sky blue region with no legal cell left. So cannot contain a cat. Mark it with X.
Try a temporary cat at , then follow what the puzzle rules force. If it leads to a contradiction, the must be X in the real puzzle.
Meowdoku Level 857 Step 8: Mark X at R1 C6: assuming a cat there leaves a region empty
Suppose held a cat in the yellow region. That assumption would leave the purple region with no legal cell left. So cannot contain a cat. Mark it with X.
Try a temporary cat at , then follow what the puzzle rules force. If it leads to a contradiction, the must be X in the real puzzle.
Meowdoku Level 857 Step 9: Mark X at R1 C7: assuming a cat there leaves a region empty
Suppose held a cat in the yellow region. That assumption would leave the purple region with no legal cell left. So cannot contain a cat. Mark it with X.
Try a temporary cat at , then follow what the puzzle rules force. If it leads to a contradiction, the must be X in the real puzzle.
Meowdoku Level 857 Step 10: Mark X at R2 C3, R2 C4, and R2 C5: cats cannot touch
Every possible cat for row 1 conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 857 Step 11: Mark X at R3 C3 and R3 C6: rows or columns are reserved
The yellow and purple regions must use rows 1 and 3. No other region can use those rows. Mark the highlighted cells with X.
Meowdoku Level 857 Step 12: Mark X at R3 C7: assuming a cat there leaves a region empty
Suppose held a cat in the yellow region. That assumption would leave the purple region with no legal cell left. So cannot contain a cat. Mark it with X.
Try a temporary cat at , then follow what the puzzle rules force. If it leads to a contradiction, the must be X in the real puzzle.
Meowdoku Level 857 Step 13: Place cat at R1 C4: only legal cell
Place a cat here at . The yellow region has no other legal cell.
Meowdoku Level 857 Step 14: Place cat at R3 C5: only legal cell
Place a cat here at . The purple region has no other legal cell.
Meowdoku Level 857 Step 15: Mark X at R5 C6: a region is locked to this column
The sky blue region must use column 6. No other region can use that column. Mark the highlighted cells with X.
Meowdoku Level 857 Step 16: Place cat at R5 C7: only legal cell
Place a cat here at . The pink region has no other legal cell.
Meowdoku Level 857 Step 17: Place cat at R2 C2: only legal cell
Place a cat here at . The green region has no other legal cell.
Meowdoku Level 857 Step 18: Place cat at R7 C8: only legal cell
Place a cat here at . The blue region has no other legal cell.
Meowdoku Level 857 Step 19: Place cat at R8 C6: only legal cell
Place a cat here at . The sky blue region has no other legal cell.
Meowdoku Level 857 Step 20: Place cat at R6 C3: only legal cell
Place a cat here at . The rose region has no other legal cell.
Meowdoku Level 857 Result
All 8 cats are placed correctly:
- R1 C4
- R2 C2
- R3 C5
- R4 C1
- R5 C7
- R6 C3
- R7 C8
- R8 C6