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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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Grandma's keynote

Found this note which is addressed To my grandma, in her chest Since she's passed now, here's my quest.. What tickled her interest? And who invited her as guest?
OnlyF's user avatar
  • 2,565
9 votes
1 answer
2k views

Is there another name for this puzzle? (Kyudoku, Nine Find)

Is there another name for this type of puzzle? I can only find two examples of it online: https://www.brainzilla.com/logic/kyudoku/ http://ninefind.com/ In the game you start with a 6x6 grid filled ...
Rory's user avatar
  • 91
5 votes
1 answer
419 views

Oh no, my chocolate banana puzzles are not unique!

There is a hidden message (7, 2) inside the solutions of the nine puzzles. An answer will only be accepted if it correctly identifies said message. Here are the Chocolate Banana puzzle rules. Each ...
Sny's user avatar
  • 3,185
4 votes
0 answers
348 views

Are infinite loops possible in the game Prodway?

I'd like to know if infinitely repeating sequences of moves (i.e. cycles) are possible in the following game: Prodway is a game for two players (Black and White) that is played on an initially empty ...
Luis's user avatar
  • 145
3 votes
0 answers
212 views

Filling in an 8x8 minesweeper grid with mines (Day 2: Diagonal Reverse Synesthesia)

Note: This is based off of Day 30 of the Minesweeper Advent Calendar on heptaveegesimal.com So my first minesweeper puzzle did not go so well. I will try to do better today. First off: This is a torus ...
CrSb0001's user avatar
  • 2,413
2 votes
0 answers
518 views

A robot moving on a grid. Part 2

This is an extension of the discussion A robot is placed on a grid point. At each move the robot must take three steps along the edge of the grid. After each step the robot must turn right. Lengths of ...
Nick's user avatar
  • 1,695
2 votes
0 answers
401 views

WITLESS Inscription 5

2 days ago, TheGreatEscaper had to take down Inscription 5 of WITLESS - A Puzzling Journey, due to (can you clarify TheGreatEscaper?) the lack of a solution. Can anyone think of a valid Inscription ...
boboquack's user avatar
  • 22k
1 vote
0 answers
214 views

Multi smol boi puzzle I: apologies

Disclaimer: Jryy, svefg bs nyy, V jbhyq yvxr gb ncbybtvmr. Abg sbe npgvbaf (jryy bxnl, sbe npgvbaf), ohg sbe zl fzby obv pvcure. Vg frrzf gung zl svefg fzby obv chmmyr jnf whfg n ovg gbb uneq. Fb, gb ...
CrSb0001's user avatar
  • 2,413
1 vote
0 answers
448 views

Not a sudoku, but still fun?

Context: I was trying to solve some of the puzzles on this site, when it occurred to me to make a puzzle variant myself. I immediately could construct one with my additional rule. Making an ...
Retudin's user avatar
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0 votes
0 answers
200 views

Continue with sudoku - how do I scan for next steps?

I filled some cells, but am stuck here. I cannot go any further. How do I advance? How would I scan the Sudoku to recognize next steps? I've taken the puzzle from https://play.google.com/store/apps/...
Abbas Baghirov's user avatar
0 votes
0 answers
83 views

Heuristic function for estimating nurikabe puzzle state

I am trying to write a program for solving nurikabe puzzle. I need a method to approximately represent the state of the game in one number, to choose the best way for the algorithm to continue. I can'...
Papouc's user avatar
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0 votes
0 answers
170 views

How to create a big, but good Hidato puzzle?

The goal of Hidato is to fill the grid with a series of consecutive numbers adjacent to each other orthogonally or diagonally, and all tiles are required to be filled in. So, as you may or may not ...
CrSb0001's user avatar
  • 2,413
0 votes
1 answer
325 views

Sudoku variants #1: Schrödinger's Grave (6x6 grid)

Not in conjunction with my Minesweeper puzzles - that would be concerning! Inspired by Cracking The Cryptic's video "The Graveyard Of Schrödinger" (original gimmick by fjam) How this ...
CrSb0001's user avatar
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0 votes
0 answers
84 views

Filling in an 8x8 minesweeper grid with mines (Day 7: Double Mines)

Note: This uses anti, single, double, and triple mines Yes, I realize that when I uploaded Day 6, I mentioned in the disclaimer that I planned for this to be released tomorrow, along with Day 8, ...
CrSb0001's user avatar
  • 2,413
-2 votes
1 answer
167 views

What are the largest and smallest numbers in decimal base in this special Sudoku?

I have constructed the following hexadecimal 16×16 sudoku in this site: The rules are like 9×9 sudoku tables (each number and letter should repeat only one time in each column, row, and 4×4 ...
Etack Sxchange's user avatar