Find the Cat #149: 8x8 Grid Puzzle (Medium)
mediumTap a square: ✕ (ruled out) → 🐱 (cat) → clear
Find the 8 hidden cats. Each row, each column and each colored region holds exactly one, and cats never sit on neighboring squares, diagonals included.
- One cat in every row and every column.
- One cat in every color region.
- Cats can’t touch — not even diagonally.
Step-by-step solution
Squares are written as R<row>C<column>, counting from the top-left. Cross out the squares listed, and place a cat wherever a step says so.
- The Blue region has only one open square left: R7C2. Put a cat there.
- The Pink region has only one open square left: R1C8. Put a cat there.
- Wherever the cat in the Red region ends up, it rules out R8C7. Cross that square out.
- The Green region has only one open square left: R8C6. Put a cat there.
- Wherever the cat in the Yellow region ends up, it rules out R5C4, R5C5 and R6C7. Cross those squares out.
- The Purple region has only one open square left: R4C5. Put a cat there.
- The Yellow region has only one open square left: R6C4. Put a cat there.
- The Teal region has only one open square left: R3C3. Put a cat there.
- The Red region has only one open square left: R5C7. Put a cat there.
- The Orange region has only one open square left: R2C1. Put a cat there.
About this puzzle
Where to start: the Blue region is a single square, so its cat is already decided. Its 8 color regions range from 1 square (Blue) to 14 squares. It can be solved in 10 deduction steps using "wherever it goes" eliminations.
If a row and a color both have only two open squares and share them, those two lines are locked together -- neither can use squares anywhere else.
Every puzzle on this site has exactly one solution that can be reached by pure deduction. If you find yourself guessing, look again for a region or line with only a few open squares left.