Meowdoku Level 664 Step-by-Step Logic Walkthrough & Explained
Follow the replay below. Each board shows the result after applying that step.
Meowdoku Level 664 Step 1: Place cat at R6 C7: only legal cell
Place a cat here at . The green region has no other legal cell.
Meowdoku Level 664 Step 2: Mark X at R1 C1, R2 C1, and R3 C1 + 3 more: a region is locked to this column
The rose region must use column 1. No other region can use that column. Mark the highlighted cells with X.
Meowdoku Level 664 Step 3: Mark X at R1 C2, R1 C3, and R1 C4 + 8 more: rows or columns are reserved
The purple, light blue, and magenta regions must use columns 2, 3, and 4. No other region can use those columns. Mark the highlighted cells with X.
Meowdoku Level 664 Step 4: Mark X at R2 C6, R3 C6, and R4 C5 + 4 more: rows or columns are reserved
The yellow and brown regions must use columns 5 and 6. No other region can use those columns. Mark the highlighted cells with X.
Meowdoku Level 664 Step 5: Mark X at R1 C8, R4 C8, and R8 C8 + 1 more: a region is locked to this column
The teal region must use column 8. No other region can use that column. Mark the highlighted cells with X.
Meowdoku Level 664 Step 6: Mark X at R7 C4, R7 C9, and R8 C9 + 1 more: rows or columns are reserved
The rose, brown, and magenta regions must use rows 7, 8, and 9. No other region can use those rows. Mark the highlighted cells with X.
Meowdoku Level 664 Step 7: Mark X at R2 C9 and R3 C9: cats cannot touch
Every possible cat for the teal region conflicts with these cells. Cats cannot share a row, column, region, or diagonal touch. Mark the highlighted cells with X.
Meowdoku Level 664 Step 8: Mark X at R7 C2 and R8 C2: 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 664 Step 9: Place cat at R7 C1: only legal cell
Place a cat here at . Row 7 has no other legal cell.
Meowdoku Level 664 Step 10: Place cat at R8 C6: only legal cell
Place a cat here at . Row 8 has no other legal cell.
Meowdoku Level 664 Step 11: Mark X at R2 C4: 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 664 Step 12: Place cat at R5 C4: only legal cell
Place a cat here at . Column 4 has no other legal cell.
Meowdoku Level 664 Step 13: Mark X at R4 C9: assuming a cat there leaves a region empty
Suppose held a cat in the pink 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 664 Step 14: Place cat at R1 C9: only legal cell
Place a cat here at . The pink region has no other legal cell.
Meowdoku Level 664 Step 15: Place cat at R3 C8: only legal cell
Place a cat here at . The teal region has no other legal cell.
Meowdoku Level 664 Step 16: Place cat at R2 C5: only legal cell
Place a cat here at . The yellow region has no other legal cell.
Meowdoku Level 664 Step 17: Place cat at R4 C2: only legal cell
Place a cat here at . The purple region has no other legal cell.
Meowdoku Level 664 Step 18: Place cat at R9 C3: only legal cell
Place a cat here at . The magenta region has no other legal cell.
Meowdoku Level 664 Result
All 9 cats are placed correctly:
- R1 C9
- R2 C5
- R3 C8
- R4 C2
- R5 C4
- R6 C7
- R7 C1
- R8 C6
- R9 C3