Use these positions to check the answer quickly before reading the logic.
J1
Row 1, Column 10
H2
Row 2, Column 8
E3
Row 3, Column 5
G4
Row 4, Column 7
I5
Row 5, Column 9
F6
Row 6, Column 6
B7
Row 7, Column 2
D8
Row 8, Column 4
A9
Row 9, Column 1
C10
Row 10, Column 3
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Each step has a board image with descriptive alt text, so the answer can be reviewed without watching the video.
1
Step 1: Place the cat at G4
The board reaches 1/10 cats after the placement at G4.
Visual step: G4
Use this image to confirm the cat at G4, row 4, column G. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 1/10 cats placed.
G4 is the new cat for this step.
9 cats remain after this placement.
2
Step 2: Place the cat at H2
The board reaches 2/10 cats after the placement at H2.
Visual step: H2
Use this image to confirm the cat at H2, row 2, column H. Keep the earlier cats at G4. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 2/10 cats placed.
H2 is the new cat for this step.
8 cats remain after this placement.
3
Step 3: Place the cat at I5
The board reaches 3/10 cats after the placement at I5.
Visual step: I5
Use this image to confirm the cat at I5, row 5, column I. Keep the earlier cats at G4, H2. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 3/10 cats placed.
I5 is the new cat for this step.
7 cats remain after this placement.
4
Step 4: Place the cat at F6
The board reaches 4/10 cats after the placement at F6.
Visual step: F6
Use this image to confirm the cat at F6, row 6, column F. Keep the earlier cats at G4, H2, I5. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 4/10 cats placed.
F6 is the new cat for this step.
6 cats remain after this placement.
5
Step 5: Place the cat at J1
The board reaches 5/10 cats after the placement at J1.
Visual step: J1
Use this image to confirm the cat at J1, row 1, column J. Keep the earlier cats at G4, H2, I5, F6. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 5/10 cats placed.
J1 is the new cat for this step.
5 cats remain after this placement.
6
Step 6: Place the cat at B7
The board reaches 6/10 cats after the placement at B7.
Visual step: B7
Use this image to confirm the cat at B7, row 7, column B. Keep the earlier cats at G4, H2, I5, F6, J1. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 6/10 cats placed.
B7 is the new cat for this step.
4 cats remain after this placement.
7
Step 7: Place the cat at D8
The board reaches 7/10 cats after the placement at D8.
Visual step: D8
Use this image to confirm the cat at D8, row 8, column D. Keep the earlier cats at G4, H2, I5, F6, J1, B7. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 7/10 cats placed.
D8 is the new cat for this step.
3 cats remain after this placement.
8
Step 8: Place the cat at C10
The board reaches 8/10 cats after the placement at C10.
Visual step: C10
Use this image to confirm the cat at C10, row 10, column C. Keep the earlier cats at G4, H2, I5, F6, J1, B7, D8. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 8/10 cats placed.
C10 is the new cat for this step.
2 cats remain after this placement.
9
Step 9: Place the cat at E3
The board reaches 9/10 cats after the placement at E3.
Visual step: E3
Use this image to confirm the cat at E3, row 3, column E. Keep the earlier cats at G4, H2, I5, F6, J1, B7, D8, C10. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 9/10 cats placed.
E3 is the new cat for this step.
1 cat remains after this placement.
10
Step 10: Place the cat at A9
The board reaches 10/10 cats after the placement at A9.
Visual step: A9
Use this image to confirm the cat at A9, row 9, column A. Keep the earlier cats at G4, H2, I5, F6, J1, B7, D8, C10, E3. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 10/10 cats placed.
A9 is the new cat for this step.
All 10 cats are now placed without sharing a row or column.
Final board image
Final screenshot source: Step 10, focused on A9.
Logic recap
Why This Solves Level 135
The final placements (J1, H2, E3, G4, I5, F6, B7, D8, A9, C10) cover 10 rows and 10 columns exactly once. Each cat stays inside the 10x10 board and keeps the row, column, and no-touching rules intact.
Final check
Rows 1-10 each contain one cat.
Columns A-J each contain one cat.
No two final cats touch, including diagonally.
Optional video
Video Walkthrough
Use the images and written steps first. Watch the video only if you want to compare the full solve.