Catdoku level 1859 answer and walkthrough

The level 1859 board

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

Level 1859 answer

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

How to solve level 1859, 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 periwinkle patch sits in column 10, so the periwinkle cat must come from there and the rest of column 10 can be crossed out. Every free square of the coral patch sits in column 9, so the coral cat must come from there and the rest of column 9 can be crossed out. A cat at row 1, column 6 would leave the yellow patch with no home for its cat, so cross that square out. A cat at row 2, column 8 would leave the yellow patch with no home for its cat, so cross that square out. A cat at row 8, column 2 would leave row 7 with no home for its cat, so cross that square out. A cat at row 8, column 8 would leave column 9 with no home for its cat, so cross that square out. A cat at row 9, column 8 would leave column 9 with no home for its cat, so cross that square out. A cat at row 9, column 9 would leave column 10 with no home for its cat, so cross that square out. Cat 1 of 10: the coral patch is down to a single free square at row 8, column 9, so its cat settles there.
2. Cat 2 of 10: the periwinkle patch is down to a single free square at row 10, column 10, so its cat settles there.
3. Cat 3 of 10: the lime patch is down to a single free square at row 9, column 7, so its cat settles there.
4. Cat 4 of 10: the yellow patch is down to a single free square at row 1, column 8, so its cat settles there.
5. Every free square of the rose patch sits in column 6, so the rose cat must come from there and the rest of column 6 can be crossed out. A cat at row 2, column 4 would leave column 3 with no home for its cat, so cross that square out. A cat at row 2, column 5 would leave column 3 with no home for its cat, so cross that square out. A cat at row 3, column 4 would leave column 3 with no home for its cat, so cross that square out. A cat at row 3, column 5 would leave column 6 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 6, column 2 would leave the peach patch with no home for its cat, so cross that square out. A cat at row 6, column 4 would leave the aqua patch with no home for its cat, so cross that square out. A cat at row 4, column 5 would leave the lilac patch with no home for its cat, so cross that square out. Every free square of the mint patch sits in column 3, so the mint cat must come from there and the rest of column 3 can be crossed out. The peach and aqua patches all squeeze into rows 6 and 7, so those rows are reserved for them; every other square there can be crossed out. A cat at row 3, column 2 would leave column 3 with no home for its cat, so cross that square out. A cat at row 4, column 2 would leave column 3 with no home for its cat, so cross that square out. A cat at row 4, column 4 would leave column 3 with no home for its cat, so cross that square out. Every free square of the lilac patch sits in row 5, so the lilac cat must come from there and the rest of row 5 can be crossed out. A cat at row 6, column 5 would leave row 5 with no home for its cat, so cross that square out. Cat 5 of 10: the only free square left in row 6 is column 1, so the cat goes there.
6. Cat 6 of 10: the sky patch is down to a single free square at row 2, column 2, so its cat settles there.
7. Cat 7 of 10: the rose patch is down to a single free square at row 3, column 6, so its cat settles there.
8. Cat 8 of 10: the mint patch is down to a single free square at row 4, column 3, so its cat settles there.
9. Cat 9 of 10: the lilac patch is down to a single free square at row 5, column 5, so its cat settles there.
10. Cat 10 of 10: the aqua patch is down to a single free square at row 7, column 4, so its cat settles there.