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6 votes
2 answers
668 views

What is the smallest possible Block-party puzzle that can be created?

In a previous question, I gave an example of a Block-party puzzle. For the purposes of this question, I will define a Block-party puzzle as follows: The puzzle creator starts with an nxn grid and ...
Will.Octagon.Gibson's user avatar
16 votes
1 answer
908 views

Solid border Yin-Yang

Yin-Yang is a grid deduction puzzle with the following rules: Fill each cell with either a black circle or a white circle. All circles of a given color must form a single orthogonally-connected ...
Sneftel's user avatar
  • 3,501
9 votes
2 answers
377 views

How do I constrain a puzzle and keep a singular solution?

I am tinkering with a puzzle framework that has the following rules: In a 6x6 grid of squares, arrange 8 strips of connected squares such that there exists exactly one strip of every length (i.e. a ...
Brandan's user avatar
  • 571
1 vote
1 answer
164 views

Feedback on a themed Nonogram/Hidato puzzle combo with a cell color gimmick

So, as you might know, the Christmas season is coming up. (17 days until Dec. 1 at the time of writing) I'm thinking of posting some Christmas-themed puzzles during that season, and just want some ...
CrSb0001's user avatar
  • 3,017
11 votes
1 answer
2k views

Can experienced players tell when a Sudoku was randomly generated? Or if it's a shuffled version?

I'm trying to make a simple classic Sudoku game in JavaScript, and I'm wondering what considerations I should have in how experienced players might interpret the generated puzzles. I'm not very ...
bryc's user avatar
  • 321
7 votes
1 answer
1k views

Can you make a puzzle that looks correct until the very last piece?

Lately I've been enjoying a little game called Flow Fit: Sudoku. It's basically sudoku meets jigsaw. You need to place the pieces into predetermined slots, and numbers cannot repeat in the same rows/...
Vilx-'s user avatar
  • 1,723
31 votes
11 answers
5k views

Is there a puzzle that is only solvable by assuming there is a unique solution?

Is it possible to construct a puzzle that is: Solvable if you assume there is a single unique solution Not solvable if you do not make this assumption My intuition says that the answer is "No&...
Nathan Merrill's user avatar
10 votes
1 answer
383 views

How to prevent overcluing in a Statue Park?

I'm interested in making some Statue Park puzzles. This genre seems easy to accidentally overclue. I have read Deusovi's grid-deduction creation guide, but all it had to say was this: When placing ...
bobble's user avatar
  • 10.9k
10 votes
0 answers
363 views

How do I construct a Japanese-style "grid deduction" puzzle? [duplicate]

Logic puzzles like Nurikabe, Slitherlink, and Battleships -- the ones we call grid-deduction puzzles -- can be a lot of fun. How do I go about constructing them? What's the best strategy for making ...
Deusovi's user avatar
  • 153k
5 votes
1 answer
613 views

Hamiltonian Puzzle Algorithm

I know how to create a Hamiltonian path or circuit for a given grid size (in which all nodes are free). However I just wonder how to create specific type of puzzles like the ones given below. I'm ...
Joseph's user avatar
  • 53
14 votes
2 answers
2k views

Creating a Sudoku where all clue numbers are orthogonally connected to the edges of the puzzle

I'm one of a group of people building a big puzzle hunt. I have what I think is a pretty good idea for a puzzle, but I'm having trouble constructing it. Basically, what I need to do is make a sudoku ...
Nellington's user avatar
17 votes
4 answers
2k views

How does one go about creating a new grid-deduction puzzle?

The grid-deduction tag covers puzzles like Sudoku, Kakuro, etc. where the goal is to fill in a grid of numbers [/letters/colours] in a unique way by logical deduction from some predetermined rules and ...
Rand al'Thor's user avatar
10 votes
2 answers
1k views

Try to design a uniquely solvable masyu

Warning: extreme difficulty Does there exist a 6x6 masyu puzzle with one black pearl in each row/column (without any white pearls) which is uniquely solvable? What about for 7x7 grids? In fact, what ...
Wen1now's user avatar
  • 9,363
11 votes
1 answer
1k views

Futoshiki Puzzle with the least amount of clue

You are supposed to create a new $5$x$5$ Futoshiki puzzle with the least amount of clues possible, but this puzzle needs a unique answer. In other words, What is the minimum number of clues for $5$x$...
Oray's user avatar
  • 30.6k
16 votes
2 answers
9k views

Creating a Kakuro puzzle with a unique solution

I start with a grid of black and white cells. I randomly populate the white cells from numbers (1-9) using Kakuro rules. Then I calculate the horizontal and vertical sums. I remove the numbers from ...
Surendra Jain's user avatar

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