Meowdoku Level 639 Step-by-Step Logic Walkthrough & Explained
Follow the replay below. Each board shows the result after applying that step.
Meowdoku Level 639 Step 1: Mark X at R1 C4, R4 C4, and R5 C4 + 3 more: a region is locked to this column
The light blue region must use column 4. No other region can use that column. Mark the highlighted cells with X.
Meowdoku Level 639 Step 2: Mark X at R1 C7, R2 C7, and R6 C7 + 2 more: a region is locked to this column
The pink region must use column 7. No other region can use that column. Mark the highlighted cells with X.
Meowdoku Level 639 Step 3: Mark X at R1 C2, R2 C2, and R3 C2 + 3 more: a region is locked to this column
The sky blue region must use column 2. No other region can use that column. Mark the highlighted cells with X.
Meowdoku Level 639 Step 4: Mark X at R1 C3, R2 C3, and R3 C3 + 3 more: a region is locked to this column
The magenta region must use column 3. No other region can use that column. Mark the highlighted cells with X.
Meowdoku Level 639 Step 5: Mark X at R1 C6, R2 C6, and R7 C6: rows or columns are reserved
The teal and brown regions must use columns 5 and 6. No other region can use those columns. Mark the highlighted cells with X.
Meowdoku Level 639 Step 6: Mark X at R2 C5 and R3 C5: cats cannot touch
Every possible cat for the light blue region conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 639 Step 7: Mark X at R4 C6 and R4 C8: cats cannot touch
Every possible cat for the pink region conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 639 Step 8: Mark X at R6 C1, R7 C1, and R7 C3: cats cannot touch
Every possible cat for the sky blue region conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 639 Step 9: Place cat at R8 C3: only legal cell
Place a cat here at . The magenta region has no other legal cell.
Meowdoku Level 639 Step 10: Place cat at R6 C2: only legal cell
Place a cat here at . The sky blue region has no other legal cell.
Meowdoku Level 639 Step 11: Mark X at R4 C5: cats cannot touch
Every possible cat for the brown region conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 639 Step 12: Mark X at R4 C7: cats cannot touch
Every possible cat for column 6 conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 639 Step 13: Place cat at R4 C1: only legal cell
Place a cat here at . Row 4 has no other legal cell.
Meowdoku Level 639 Step 14: Mark X at R2 C8: assuming a cat there leaves a region empty
Suppose held a cat in the purple region. That assumption would leave Row 7 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 639 Step 15: Place cat at R2 C4: only legal cell
Place a cat here at . Row 2 has no other legal cell.
Meowdoku Level 639 Step 16: Place cat at R3 C6: only legal cell
Place a cat here at . The teal region has no other legal cell.
Meowdoku Level 639 Step 17: Place cat at R5 C7: only legal cell
Place a cat here at . The pink region has no other legal cell.
Meowdoku Level 639 Step 18: Place cat at R7 C5: only legal cell
Place a cat here at . The brown region has no other legal cell.
Meowdoku Level 639 Step 19: Place cat at R1 C8: only legal cell
Place a cat here at . The purple region has no other legal cell.
Meowdoku Level 639 Result
All 8 cats are placed correctly:
- R1 C8
- R2 C4
- R3 C6
- R4 C1
- R5 C7
- R6 C2
- R7 C5
- R8 C3