Step 1: Place the cat at B1
The board reaches 1/7 cats after the placement at B1.

Use this image to confirm the cat at B1, row 1, column B. This keeps the one-cat-per-row and one-cat-per-column rule intact.
- Board state shows 1/7 cats placed.
- B1 is the new cat for this step.
- 6 cats remain after this placement.







