Questions tagged [grid-deduction]
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.
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A colourful Colombian Sudoku
Fill the sudoku on the left so that each column, row, 3x3 box, and cells of the same color contain the numbers 1 to 9. The dots show how many numbers in the row or column of the grid on the right ...
- 541
15
votes
1
answer
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Tombs of Ancients
This is part 68 of the puzzle series Around the World in Many Days. Each part is solvable on its own.
Dear Puzzling,
The top grid here is a Yin-yang puzzle. Shade some cells in the grid so that ...
- 78.6k
6
votes
1
answer
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What should the next step be in this Kakuro puzzle?
I have recently been learning more and more tricks for solving Kakuro puzzles, but I'm at a loss for how to solve the final bit of this puzzle. For reference, it is from the "Real Kakuro" ...
- 163
8
votes
1
answer
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Bulls and Cows meet Sudoku!
This is a Colombian Jigsaw Sudoku where the usual rules apply, but with irregular boxes. The dots in the right-hand scheme indicate how many of the numbers in a particular row or column are correctly ...
- 541
17
votes
2
answers
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Going around in circles
Solve the grid. Then solve the grid again.
The answer can be one or two letters long.
- 4,147
18
votes
2
answers
1k
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Nonconsecutive Anti-Knight Fillomino?
Rules of Fillomino:
Fill in all empty cells with numbers under the following rules.
Divide all of the board into blocks.
Fill each block with the same number horizontally or vertically.
Each block ...
- 15.9k
18
votes
1
answer
1k
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66: Luftballons
This is part 66 of the puzzle series Around the World in Many Days. Each part is solvable on its own.
Dear Puzzling,
This is a Dosun-Fuwari puzzle. Place some balloons (white circles) and anvils (...
- 78.6k