Catdoku level 1672 answer and walkthrough

The level 1672 board

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

Level 1672 answer

1. Row 1: column 1, 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 4, in the mint patch
5. Row 5: column 10, in the lilac patch
6. Row 6: column 8, in the peach patch
7. Row 7: column 3, in the aqua patch
8. Row 8: column 6, 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 1672, 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. Every free square of the yellow patch sits in column 1, so the yellow cat must come from there and the rest of column 1 can be crossed out. Every free square of the lilac patch sits in column 10, so the lilac cat must come from there and the rest of column 10 can be crossed out. A cat at row 1, column 2 would leave column 1 with no home for its cat, so cross that square out. A cat at row 2, column 2 would leave column 1 with no home for its cat, so cross that square out. A cat at row 4, column 2 would leave row 3 with no home for its cat, so cross that square out. A cat at row 4, column 3 would leave row 3 with no home for its cat, so cross that square out. A cat at row 4, column 9 would leave column 10 with no home for its cat, so cross that square out. A cat at row 5, column 2 would leave row 3 with no home for its cat, so cross that square out. A cat at row 5, column 9 would leave column 10 with no home for its cat, so cross that square out. A cat at row 7, column 9 would leave the lime patch 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. The yellow and sky patches all squeeze into rows 1 and 2, so those rows are reserved for them; every other square there can be crossed out. Cat 1 of 10: the rose patch is down to a single free square at row 3, column 2, so its cat settles there.
2. Cat 2 of 10: the yellow patch is down to a single free square at row 1, column 1, so its cat settles there.
3. A cat at row 4, column 6 would leave the mint patch with no home for its cat, so cross that square out. A cat at row 5, column 4 would leave the mint patch 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. The mint and lilac patches all squeeze into rows 4 and 5, so those rows are reserved for them; every other square there can be crossed out. Every free square of the peach patch sits in row 6, so the peach cat must come from there and the rest of row 6 can be crossed out. Cat 3 of 10: the aqua patch is down to a single free square at row 7, column 3, so its cat settles there.
4. A cat at row 8, column 5 would leave column 6 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. A cat at row 9, column 7 would leave column 6 with no home for its cat, so cross that square out. 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. Cat 4 of 10: column 4 has exactly one square left, at row 4, so the cat goes there.
5. Cat 5 of 10: the lilac patch is down to a single free square at row 5, column 10, so its cat settles there.
6. Cat 6 of 10: the peach patch is down to a single free square at row 6, column 8, so its cat settles there.
7. Cat 7 of 10: column 5 has exactly one square left, at row 10, so the cat goes there.
8. Cat 8 of 10: the only free square left in row 9 is column 9, so the cat goes there.
9. Cat 9 of 10: the sky patch is down to a single free square at row 2, column 7, so its cat settles there.
10. Cat 10 of 10: the coral patch is down to a single free square at row 8, column 6, so its cat settles there.