A 8x8 board rated fiendish, level 213 of 300. Catdoku levels are identical for every player, so this solution always matches the board in your game.
The level 213 board
Place one cat in every row, every column and every colored patch. No two cats may touch, not even diagonally.
Level 213 answer
Row 1: column 7, in the yellow patch
Row 2: column 3, in the sky patch
Row 3: column 8, in the rose patch
Row 4: column 5, in the mint patch
Row 5: column 1, in the lilac patch
Row 6: column 6, in the peach patch
Row 7: column 2, in the aqua patch
Row 8: column 4, in the coral patch
How to solve level 213, step by step
After every placed cat, cross out the rest of its row, its column, its patch and the four corner squares around it. The steps below assume you do (the in-game auto-paws assist does it for you).
Cat 1 of 8: the mint patch is down to a single free square at row 4, column 5, so its cat settles there.
Column 8 only has free squares inside the rose patch, so that patch's cat is spoken for and its squares outside the line can be crossed out. A cat at row 7, column 1 would leave the aqua patch with no home for its cat, so cross that square out. A cat at row 7, column 4 would leave the coral patch with no home for its cat, so cross that square out. A cat at row 8, column 2 would leave the coral patch with no home for its cat, so cross that square out. A cat at row 6, column 1 would leave the aqua patch with no home for its cat, so cross that square out. A cat at row 5, column 3 would leave the lilac patch with no home for its cat, so cross that square out. A cat at row 8, column 3 would leave the aqua patch with no home for its cat, so cross that square out. A cat at row 6, column 4 would leave the coral patch with no home for its cat, so cross that square out. The aqua and coral patches all squeeze into rows 7 and 8, so those rows are reserved for them; every other square there can be crossed out. Cat 2 of 8: column 7 has exactly one square left, at row 1, so the cat goes there.
Cat 3 of 8: column 4 has exactly one square left, at row 8, so the cat goes there.
Cat 4 of 8: the aqua patch is down to a single free square at row 7, column 2, so its cat settles there.
Cat 5 of 8: the lilac patch is down to a single free square at row 5, column 1, so its cat settles there.
Cat 6 of 8: the peach patch is down to a single free square at row 6, column 6, so its cat settles there.
Cat 7 of 8: the rose patch is down to a single free square at row 3, column 8, so its cat settles there.
Cat 8 of 8: the sky patch is down to a single free square at row 2, column 3, so its cat settles there.