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Results tagged with grid-deduction
Search options questions only
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user 93
Puzzles such as Sudoku or Kakuro, where the final state of a pre-existing grid must be deduced logically through clues placed within and/or around the grid. Use with the [logical-deduction] tag. For puzzles where you are given a list of clues which can be used to compose a grid to solve them logically, use the [logic-grid] tag instead.
15
votes
1
answer
491
views
"Is dot a fact?"
You're presented with a five-by-five grid of dots.
Each dot is assigned a label from 1 to 25 going across the rows and down. Thus, the top-left dot is number 1; the bottom-left dot is 21.
Your job …
- 12.9k
25
votes
3
answers
2k
views
a few signposts
Assign an integer (1 through 16) to each cell so that:
16 is in the cell with the star; and
each integer's arrow points to its successor (i.e. the next integer), though not necessarily in the adjace …
- 12.9k
14
votes
1
answer
763
views
Up like a rocket ship
This is a Palisade (or 6 Cells) puzzle. The rules are:
Thicken some of the pentagons' sides so the thick borders outline regions of six pentagons apiece.
Any pentagon with a number in it indicates ho …
- 12.9k
13
votes
1
answer
1k
views
A walk after dark
This is a Palisade (or n-Cells) puzzle. The rules are:
Thicken some of the squares' sides so the thick borders outline cells. One such cell comprises just one square; one cell comprises precisely two …
- 12.9k
15
votes
1
answer
1k
views
When you stop at the top of a Ferris wheel
This is a Palisade (or Ten-Cells) puzzle. The rules are:
Thicken some of the squares' sides so the thick borders outline cells of ten squares apiece.
Any square with a number in it indicates how many …
- 12.9k
8
votes
1
answer
395
views
gambas al ajillo
This is a Tapa puzzle. That means you must shade some of the squares, so that:
No square containing text is shaded.
Numbers in a square indicate runs of consecutive shaded squares among the ≤eight …
- 12.9k
15
votes
2
answers
441
views
A sudoku that's already filled in for you
The usual rules of sudoku apply: each row and column must have one of each digit; plus, if you divide the whole nine-by-nine grid into nine three-by-three subgrids, then each subgrid has one of each …
- 12.9k
5
votes
2
answers
402
views
a six-by-six KenKen
The rules of KenKen are as follows:
You must fill in the numbers 1 through 6, one number per box, in the grid, so each row and each column contains each number exactly once.
Each heavily outlined sec …
- 12.9k
13
votes
1
answer
920
views
A true no-no-gram
This is a nonogram with the usual rules. That is, you must fill white squares in with black so that the numbers at the head of each row or column indicate, in order, the respective lengths of sequence …
- 12.9k
15
votes
1
answer
1k
views
Trust me: you do not want to go down this road with me
Every cell has a digit from 0 to 9 or one of the four operation symbols +, −, ×, and /, signifying addition, subtraction, multiplication, and division respectively.
No digit appears more than once i …
- 12.9k