Use these positions to check the answer quickly before reading the logic.
H1
Row 1, Column 8
F2
Row 2, Column 6
D3
Row 3, Column 4
G4
Row 4, Column 7
B5
Row 5, Column 2
E6
Row 6, Column 5
C7
Row 7, Column 3
A8
Row 8, Column 1
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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 H1
The board reaches 1/8 cats after the placement at H1.
Visual step: H1
Use this image to confirm the cat at H1, row 1, column H. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 1/8 cats placed.
H1 is the new cat for this step.
7 cats remain after this placement.
2
Step 2: Place the cat at C7
The board reaches 2/8 cats after the placement at C7.
Visual step: C7
Use this image to confirm the cat at C7, row 7, column C. Keep the earlier cats at H1. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 2/8 cats placed.
C7 is the new cat for this step.
6 cats remain after this placement.
3
Step 3: Place the cat at F2
The board reaches 3/8 cats after the placement at F2.
Visual step: F2
Use this image to confirm the cat at F2, row 2, column F. Keep the earlier cats at H1, C7. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 3/8 cats placed.
F2 is the new cat for this step.
5 cats remain after this placement.
4
Step 4: Place the cat at A8
The board reaches 4/8 cats after the placement at A8.
Visual step: A8
Use this image to confirm the cat at A8, row 8, column A. Keep the earlier cats at H1, C7, F2. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 4/8 cats placed.
A8 is the new cat for this step.
4 cats remain after this placement.
5
Step 5: Place the cat at D3
The board reaches 5/8 cats after the placement at D3.
Visual step: D3
Use this image to confirm the cat at D3, row 3, column D. Keep the earlier cats at H1, C7, F2, A8. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 5/8 cats placed.
D3 is the new cat for this step.
3 cats remain after this placement.
6
Step 6: Place the cat at E6
The board reaches 6/8 cats after the placement at E6.
Visual step: E6
Use this image to confirm the cat at E6, row 6, column E. Keep the earlier cats at H1, C7, F2, A8, D3. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 6/8 cats placed.
E6 is the new cat for this step.
2 cats remain after this placement.
7
Step 7: Place the cat at G4
The board reaches 7/8 cats after the placement at G4.
Visual step: G4
Use this image to confirm the cat at G4, row 4, column G. Keep the earlier cats at H1, C7, F2, A8, D3, E6. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 7/8 cats placed.
G4 is the new cat for this step.
1 cat remains after this placement.
8
Step 8: Place the cat at B5
The board reaches 8/8 cats after the placement at B5.
Visual step: B5
Use this image to confirm the cat at B5, row 5, column B. Keep the earlier cats at H1, C7, F2, A8, D3, E6, G4. This keeps the one-cat-per-row and one-cat-per-column rule intact.
Board state shows 8/8 cats placed.
B5 is the new cat for this step.
All 8 cats are now placed without sharing a row or column.
Final board image
Final screenshot source: Step 8, focused on B5.
Logic recap
Why This Solves Level 151
The final placements (H1, F2, D3, G4, B5, E6, C7, A8) cover 8 rows and 8 columns exactly once. Each cat stays inside the 8x8 board and keeps the row, column, and no-touching rules intact.
Final check
Rows 1-8 each contain one cat.
Columns A-H 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.