Meowdoku Level 821 Step-by-Step Logic Walkthrough & Explained
Follow the replay below. Each board shows the result after applying that step.
Meowdoku Level 821 Step 1: Mark X at R3 C2, R4 C2, and R5 C2 + 2 more: a region is locked to this column
The orange region must use column 2. No other region can use that column. Mark the highlighted cells with X.
Meowdoku Level 821 Step 2: Mark X at R1 C3, R2 C3, and R3 C3 + 2 more: a region is locked to this column
The rose region must use column 3. No other region can use that column. Mark the highlighted cells with X.
Meowdoku Level 821 Step 3: Mark X at R4 C1, R4 C4, and R5 C1 + 1 more: rows or columns are reserved
The rose, yellow, purple, and magenta regions must use rows 4, 5, 6, and 7. No other region can use those rows. Mark the highlighted cells with X.
Meowdoku Level 821 Step 4: Mark X at R1 C1 and R2 C1: cats cannot touch
Every possible cat for the orange region conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 821 Step 5: Mark X at R3 C6: 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 821 Step 6: Mark X at R5 C4: cats cannot touch
Every possible cat for the rose region conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 821 Step 7: Mark X at R1 C5, R1 C6, and R1 C7 + 1 more: rows or columns are reserved
The pink, yellow, and purple regions must use columns 5, 6, and 7. No other region can use those columns. Mark the highlighted cells with X.
Meowdoku Level 821 Step 8: Mark X at R5 C6: cats cannot touch
Every possible cat for the yellow region conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 821 Step 9: Mark X at R7 C5: cats cannot touch
Every possible cat for the magenta region conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 821 Step 10: Mark X at R4 C6, R4 C7, and R6 C6: cats cannot touch
Every possible cat for row 5 conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 821 Step 11: Mark X at R2 C5: a region is locked to this column
The yellow region must use column 5. No other region can use that column. Mark the highlighted cells with X.
Meowdoku Level 821 Step 12: Mark X at R3 C4: cats cannot touch
Every possible cat for row 4 conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 821 Step 13: Mark X at R2 C2: assuming a cat there leaves a region empty
Suppose held a cat in the orange region. That assumption would leave the magenta 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 821 Step 14: Place cat at R1 C2: only legal cell
Place a cat here at . The orange region has no other legal cell.
Meowdoku Level 821 Step 15: Mark X at R2 C7: assuming a cat there leaves a region empty
Suppose held a cat in the pink region. That assumption would leave the magenta 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 821 Step 16: Mark X at R3 C7: assuming a cat there leaves a region empty
Suppose held a cat in the pink region. That assumption would leave the magenta 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 821 Step 17: Place cat at R2 C6: only legal cell
Place a cat here at . The pink region has no other legal cell.
Meowdoku Level 821 Step 18: Place cat at R3 C1: only legal cell
Place a cat here at . The teal region has no other legal cell.
Meowdoku Level 821 Step 19: Mark X at R6 C3 and R6 C5: cats cannot touch
Every possible cat for the magenta region conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 821 Step 20: Place cat at R4 C3: only legal cell
Place a cat here at . The rose region has no other legal cell.
Meowdoku Level 821 Step 21: Place cat at R5 C5: only legal cell
Place a cat here at . The yellow region has no other legal cell.
Meowdoku Level 821 Step 22: Place cat at R7 C4: only legal cell
Place a cat here at . The magenta region has no other legal cell.
Meowdoku Level 821 Step 23: Place cat at R6 C7: only legal cell
Place a cat here at . The purple region has no other legal cell.
Meowdoku Level 821 Result
All 7 cats are placed correctly:
- R1 C2
- R2 C6
- R3 C1
- R4 C3
- R5 C5
- R6 C7
- R7 C4