1
Scan the colored regions
Every region needs exactly one cat. Small or narrow regions usually reveal the strongest constraints first.
How to Play
Learn the three rules, the marking controls, and a reliable first-solve routine.
Every region needs exactly one cat. Small or narrow regions usually reveal the strongest constraints first.
Once a cat is confirmed, mark every other cell in its row and column with an X.
A cat blocks all eight surrounding cells, including diagonal corners.
Look for a row, column, or region with only one candidate left. Every shipped puzzle has a unique logical solution.
Tap or press Space to cycle a cell. Drag across empty cells to mark several Xs. Use arrow keys to move, X to mark, C to place a cat, U to undo, R to restart, and H for a hint.