Find the Cat #192: 8x8 Grid Puzzle (Medium)

medium

Tap a square: ✕ (ruled out) → 🐱 (cat) → clear

0 / 8 cats · 0:00
Red (10)Orange (6)Yellow (11)Green (5)Teal (12)Blue (7)Purple (1)Pink (12)

Every row, every column and every color region needs exactly one cat -- but no two cats may touch, not even diagonally. This puzzle is a 8x8 grid with 8 colored regions.

  • 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.

  1. The Purple region has only one open square left: R3C3. Put a cat there.
  2. Wherever the cat in the Orange region ends up, it rules out R1C7. Cross that square out.
  3. Wherever the cat in the Green region ends up, it rules out R2C7. Cross that square out.
  4. Wherever the cat in the Orange region ends up, it rules out R4C6 and R5C6. Cross those squares out.
  5. Wherever the cat in the Blue region ends up, it rules out R1C1, R2C1, R5C2, R6C1, R7C1 and R8C1. Cross those squares out.
  6. Wherever the cat in the Yellow region ends up, it rules out R1C6. Cross that square out.
  7. Wherever the cat in the Green region ends up, it rules out R4C8, R5C8, R6C8, R7C8 and R8C8. Cross those squares out.
  8. The Yellow and Green regions can only use rows 1 and 2, so rows 1 and 2 are already spoken for. Cross out R2C6.
  9. The Orange region has only one open square left: R4C7. Put a cat there.
  10. The Blue region has only one open square left: R5C1. Put a cat there.
  11. The Pink region has only one open square left: R6C5. Put a cat there.
  12. Row 2 has only one open square left: R2C8. Put a cat there.
  13. Row 7 has only one open square left: R7C2. Put a cat there.
  14. The Yellow region has only one open square left: R1C4. Put a cat there.
  15. The Red region has only one open square left: R8C6. Put a cat there.

About this puzzle

Where to start: the Purple region is a single square, so its cat is already decided. Its 8 color regions range from 1 square (Purple) to 12 squares. It can be solved in 15 deduction steps using grouped row/column/region deductions.

Look for a color that sits entirely inside one row or one column. Its cat must be in that line, so every other square in that line can be crossed out.

When you fill the last cat, press Check Answer -- the grid is verified against the stored solution and any broken rule is named so you know where to look.

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