Catdoku level 1723 answer and walkthrough

The level 1723 board

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

Level 1723 answer

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

How to solve level 1723, 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 lime patch sits in row 9, so the lime cat must come from there and the rest of row 9 can be crossed 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. Every free square of the coral patch sits in row 8, so the coral cat must come from there and the rest of row 8 can be crossed out. A cat at row 1, column 9 would leave the sky patch with no home for its cat, so cross that square out. A cat at row 2, column 2 would leave column 3 with no home for its cat, so cross that square out. A cat at row 3, column 10 would leave the sky patch with no home for its cat, so cross that square out. A cat at row 4, column 8 would leave the rose patch with no home for its cat, so cross that square out. The sky and periwinkle patches all squeeze into columns 9 and 10, so those columns are reserved for them; every other square there can be crossed out. Every free square of the rose patch sits in column 8, so the rose cat must come from there and the rest of column 8 can be crossed out. A cat at row 2, column 7 would leave column 8 with no home for its cat, so cross that square out. A cat at row 2, column 9 would leave column 8 with no home for its cat, so cross that square out. Cat 1 of 10: column 9 has exactly one square left, at row 10, so the cat goes there.
2. The yellow, sky and rose patches all squeeze into rows 1, 2 and 3, so those rows are reserved for them; every other square there can be crossed out. A cat at row 4, column 6 would leave the mint patch with no home for its cat, so cross that square out. Every free square of the lilac patch sits in column 7, so the lilac cat must come from there and the rest of column 7 can be crossed out. Row 7 only has free squares inside the aqua patch, so that patch's cat is spoken for and its squares outside the line can be crossed out. Row 6 only has free squares inside the peach patch, so that patch's cat is spoken for and its squares outside the line can be crossed out. A cat at row 5, column 5 would leave row 6 with no home for its cat, so cross that square out. Cat 2 of 10: the only free square left in row 5 is column 7, so the cat goes there.
3. A cat at row 7, column 4 would leave row 6 with no home for its cat, so cross that square out. A cat at row 7, column 5 would leave row 6 with no home for its cat, so cross that square out. The mint and peach patches all squeeze into columns 4 and 5, so those columns are reserved for them; every other square there can be crossed out. Cat 3 of 10: the lime patch is down to a single free square at row 9, column 6, so its cat settles there.
4. A cat at row 7, column 1 would leave row 8 with no home for its cat, so cross that square out. A cat at row 7, column 2 would leave row 8 with no home for its cat, so cross that square out. Cat 4 of 10: the aqua patch is down to a single free square at row 7, column 3, so its cat settles there.
5. Cat 5 of 10: the peach patch is down to a single free square at row 6, column 5, so its cat settles there.
6. Cat 6 of 10: the mint patch is down to a single free square at row 4, column 4, so its cat settles there.
7. Cat 7 of 10: the coral patch is down to a single free square at row 8, column 1, so its cat settles there.
8. Cat 8 of 10: the yellow patch is down to a single free square at row 1, column 2, so its cat settles there.
9. Cat 9 of 10: the sky patch is down to a single free square at row 2, column 10, so its cat settles there.
10. Cat 10 of 10: the rose patch is down to a single free square at row 3, column 8, so its cat settles there.