Levels 6001 to 7000: 1000 boards from 9x9 and 10x10, on 2 lives, 1 on boss boards. Every 10th level is a boss board. Below: every technique this chapter needs, shown on its own boards, and two boards solved in full.
1000
Levels
2
Lives
100
Boss boards
What Ghost Light Lane asks of you
A thousand levels split evenly between 9x9 and 10x10 boards, all needing the counting trick again and again. Regular boards give you two lives, and every boss board, always a 10x10, gives you one.
Use the nine regular boards of each run to warm up your counting, then slow right down for the boss. Before placing any cat on a boss board, check its row, its column, its color and all eight neighbours.
Techniques you will need
Grey crosses are squares already ruled out. Coral marks what the step changes.
Last free squareA row, column or patch is down to one square that can still hold a cat, so the cat goes there.Needed on 100% of Ghost Light Lane boards, about 9.5 times per board.Level 6001. Cat 3 of 9: the yellow patch is down to a single free square at row 1, column 4, so its cat settles there.
Patch in a lineEvery free square of a patch sits in one row or column, so that line belongs to the patch and the rest of it can be crossed out. It works the other way round too.Needed on 98% of Ghost Light Lane boards, about 3.3 times per board.Level 6001. Every free square of the mint patch sits in row 4, so the mint cat must come from there and the rest of row 4 can be crossed out.
Dead-end squarePicture a cat on a square. If it would cross out every last spot in some row, column or patch, that square can never hold a cat.Needed on 100% of Ghost Light Lane boards, about 17 times per board.Level 6001. A cat at row 3, column 8 would leave row 4 with no home for its cat, so cross that square out.
Counting trickWhen two patches fit entirely inside the same two rows (or three inside three, and so on), those rows are theirs. Every other square in them can be crossed out.Needed on 100% of Ghost Light Lane boards, about 3.5 times per board.Level 6001. The mint and peach patches all squeeze into columns 8 and 9, so those columns are reserved for them; every other square there can be crossed out.
Every free square of the mint patch sits in row 4, so the mint cat must come from there and the rest of row 4 can be crossed out. Every free square of the aqua patch sits in row 7, so the aqua cat must come from there and the rest of row 7 can be crossed out. A cat at row 3, column 8 would leave row 4 with no home for its cat, so cross that square out. A cat at row 3, column 9 would leave row 4 with no home for its cat, so cross that square out. A cat at row 5, column 8 would leave row 4 with no home for its cat, so cross that square out. A cat at row 5, column 9 would leave row 4 with no home for its cat, so cross that square out. A cat at row 6, column 7 would leave row 7 with no home for its cat, so cross that square out. A cat at row 6, column 8 would leave row 7 with no home for its cat, so cross that square out. A cat at row 8, column 7 would leave row 7 with no home for its cat, so cross that square out. A cat at row 8, column 8 would leave row 7 with no home for its cat, so cross that square out. A cat at row 9, column 5 would leave the coral patch with no home for its cat, so cross that square out. The mint and peach patches all squeeze into columns 8 and 9, so those columns are reserved for them; every other square there can be crossed out. Cat 1 of 9: the aqua patch is down to a single free square at row 7, column 7, so its cat settles there.
A cat at row 5, column 4 would leave the lilac patch with no home for its cat, so cross that square out. A cat at row 5, column 5 would leave the lilac patch with no home for its cat, so cross that square out. A cat at row 9, column 4 would leave the coral patch with no home for its cat, so cross that square out. The lilac, peach, coral and lime patches all squeeze into rows 5, 6, 8 and 9, so those rows are reserved for them; every other square there can be crossed out. The lilac and coral patches all squeeze into columns 5 and 6, so those columns are reserved for them; every other square there can be crossed out. Every free square of the yellow patch sits in column 4, so the yellow cat must come from there and the rest of column 4 can be crossed out. Every free square of the rose patch sits in column 3, so the rose cat must come from there and the rest of column 3 can be crossed out. A cat at row 1, column 3 would leave column 4 with no home for its cat, so cross that square out. A cat at row 2, column 2 would leave row 3 with no home for its cat, so cross that square out. A cat at row 2, column 3 would leave column 4 with no home for its cat, so cross that square out. Cat 2 of 9: the rose patch is down to a single free square at row 3, column 3, so its cat settles there.
Cat 3 of 9: the yellow patch is down to a single free square at row 1, column 4, so its cat settles there.
Cat 4 of 9: the sky patch is down to a single free square at row 2, column 1, so its cat settles there.
Cat 5 of 9: the only free square left in row 5 is column 6, so the cat goes there.
Cat 6 of 9: the coral patch is down to a single free square at row 8, column 5, so its cat settles there.
Cat 7 of 9: the lime patch is down to a single free square at row 9, column 2, so its cat settles there.
Cat 8 of 9: the peach patch is down to a single free square at row 6, column 9, so its cat settles there.
Cat 9 of 9: the mint patch is down to a single free square at row 4, column 8, so its cat settles there.
Cat 1 of 10: the periwinkle patch is down to a single free square at row 10, column 1, so its cat settles there.
A cat at row 1, column 8 would leave the sky patch with no home for its cat, so cross that square out. A cat at row 1, column 9 would leave the yellow patch with no home for its cat, so cross that square out. A cat at row 2, column 6 would leave the yellow patch with no home for its cat, so cross that square out. A cat at row 2, column 7 would leave the yellow patch with no home for its cat, so cross that square out. A cat at row 2, column 10 would leave the sky patch with no home for its cat, so cross that square out. A cat at row 3, column 7 would leave the yellow patch 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 1, column 2 would leave row 3 with no home for its cat, so cross that square out. A cat at row 2, column 3 would leave row 3 with no home for its cat, so cross that square out. A cat at row 5, column 9 would leave the mint patch with no home for its cat, so cross that square out. A cat at row 6, column 7 would leave the aqua patch with no home for its cat, so cross that square out. A cat at row 7, column 3 would leave column 2 with no home for its cat, so cross that square out. A cat at row 7, column 6 would leave the aqua patch with no home for its cat, so cross that square out. A cat at row 8, column 3 would leave column 2 with no home for its cat, so cross that square out. A cat at row 8, column 4 would leave the coral patch with no home for its cat, so cross that square out. A cat at row 8, column 8 would leave the aqua 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. A cat at row 3, column 8 would leave row 2 with no home for its cat, so cross that square out. A cat at row 3, column 9 would leave row 2 with no home for its cat, so cross that square out. A cat at row 4, column 5 would leave column 6 with no home for its cat, so cross that square out. The coral and lime patches all squeeze into rows 8 and 9, so those rows are reserved for them; every other square there can be crossed out. Every free square of the aqua patch sits in row 7, so the aqua cat must come from there and the rest of row 7 can be crossed out. A cat at row 4, column 3 would leave column 4 with no home for its cat, so cross that square out. A cat at row 5, column 6 would leave the peach patch with no home for its cat, so cross that square out. A cat at row 6, column 8 would leave row 7 with no home for its cat, so cross that square out. A cat at row 6, column 9 would leave column 6 with no home for its cat, so cross that square out. A cat at row 6, column 10 would leave column 6 with no home for its cat, so cross that square out. The yellow and aqua patches all squeeze into columns 7 and 8, so those columns are reserved for them; every other square there can be crossed out. A cat at row 6, column 4 would leave the peach patch with no home for its cat, so cross that square out. The sky and mint patches all squeeze into columns 9 and 10, so those columns are reserved for them; every other square there can be crossed out. Cat 2 of 10: the lime patch is down to a single free square at row 9, column 5, so its cat settles there.
Cat 3 of 10: the coral patch is down to a single free square at row 8, column 2, so its cat settles there.
Row 3 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 3, column 3 would leave the lilac patch with no home for its cat, so cross that square out. Column 3 only has free squares inside the lilac patch, so that patch's cat is spoken for and its squares outside the line can be crossed out. Row 4 only has free squares inside the mint 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 4 would leave row 6 with no home for its cat, so cross that square out. Cat 4 of 10: the peach patch is down to a single free square at row 6, column 6, so its cat settles there.
Cat 5 of 10: the rose patch is down to a single free square at row 3, column 4, so its cat settles there.
Cat 6 of 10: the lilac patch is down to a single free square at row 5, column 3, so its cat settles there.
Cat 7 of 10: the aqua patch is down to a single free square at row 7, column 8, so its cat settles there.
Cat 8 of 10: the yellow patch is down to a single free square at row 1, column 7, so its cat settles there.
Cat 9 of 10: the sky patch is down to a single free square at row 2, column 9, so its cat settles there.
Cat 10 of 10: the mint patch is down to a single free square at row 4, column 10, so its cat settles there.
Stuck on a different board? Tap the hint paw in the game: it points at the row, column or patch where the next forced move hides, and only shows the square if you ask again.
