Catdoku level 1661 answer and walkthrough

The level 1661 board

Place one cat in every row, every column and every colored patch. No two cats may touch, not even diagonally.

Level 1661 answer

1. Row 1: column 3, in the yellow patch
2. Row 2: column 7, in the sky patch
3. Row 3: column 2, in the rose patch
4. Row 4: column 6, in the mint patch
5. Row 5: column 8, in the lilac patch
6. Row 6: column 4, in the peach patch
7. Row 7: column 10, in the aqua patch
8. Row 8: column 1, in the coral patch
9. Row 9: column 9, in the lime patch
10. Row 10: column 5, in the periwinkle patch

How to solve level 1661, 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).

1. Cat 1 of 10: the yellow patch is down to a single free square at row 1, column 3, so its cat settles there.
2. Every free square of the periwinkle patch sits in row 10, so the periwinkle cat must come from there and the rest of row 10 can be crossed out. A cat at row 6, column 7 would leave column 8 with no home for its cat, so cross that square out. A cat at row 7, column 4 would leave column 8 with no home for its cat, so cross that square out. A cat at row 7, column 5 would leave column 8 with no home for its cat, so cross that square out. A cat at row 7, column 6 would leave column 8 with no home for its cat, so cross that square out. A cat at row 7, column 7 would leave column 8 with no home for its cat, so cross that square out. A cat at row 7, column 9 would leave the aqua 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 8, column 7 would leave column 8 with no home for its cat, so cross that square out. A cat at row 9, column 4 would leave row 10 with no home for its cat, so cross that square out. A cat at row 9, column 5 would leave row 10 with no home for its cat, so cross that square out. The rose and coral patches all squeeze into columns 1 and 2, so those columns are reserved for them; every other square there can be crossed out. Cat 2 of 10: the peach patch is down to a single free square at row 6, column 4, so its cat settles there.
3. Cat 3 of 10: the periwinkle patch is down to a single free square at row 10, column 5, so its cat settles there.
4. Every free square of the mint patch sits in column 6, so the mint cat must come from there and the rest of column 6 can be crossed out. A cat at row 3, column 7 would leave column 6 with no home for its cat, so cross that square out. A cat at row 4, column 7 would leave column 6 with no home for its cat, so cross that square out. A cat at row 8, column 9 would leave row 7 with no home for its cat, so cross that square out. A cat at row 8, column 10 would leave row 7 with no home for its cat, so cross that square out. A cat at row 9, column 8 would leave the lime patch with no home for its cat, so cross that square out. A cat at row 9, column 10 would leave row 7 with no home for its cat, so cross that square out. A cat at row 8, column 8 would leave the lime patch with no home for its cat, so cross that square out. Cat 4 of 10: the only free square left in row 8 is column 1, so the cat goes there.
5. Row 9 only has free squares inside the lime patch, so that patch's cat is spoken for and its squares outside the line can be crossed out. Cat 5 of 10: the only free square left in row 7 is column 10, so the cat goes there.
6. Cat 6 of 10: the sky patch is down to a single free square at row 2, column 7, so its cat settles there.
7. Cat 7 of 10: the mint patch is down to a single free square at row 4, column 6, so its cat settles there.
8. Cat 8 of 10: the lilac patch is down to a single free square at row 5, column 8, so its cat settles there.
9. Cat 9 of 10: the rose patch is down to a single free square at row 3, column 2, so its cat settles there.
10. Cat 10 of 10: the lime patch is down to a single free square at row 9, column 9, so its cat settles there.