# 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.

982 questions
Filter by
Sorted by
Tagged with
112 views

### Filling in an 8x8 minesweeper grid with mines (Day 10: Double Neighbors)

Previous Minesweeper puzzles Based off of Day 10 of the Minesweeper Advent Calendar on heptaveegesimal.com Difficulty (approximate): ★★★★☆ Contains: Single mines (1 mine), Anti-mines (-1 mines), ...
1 vote
63 views

### Sudoku variants #2: Lined Numbers (6x6 grid)

Previous variant Today's Sudoku variant is a bit weird. Here's why: Take this screenshot: From this, you might argue that there is nothing that can be logically deduced on this grid. Now you might ...
242 views

### Another puzzle combination (feat. Kakuro)

Today, I am going to give you another puzzle combination. This time, it features a Kakuro! However, there are some things to note: There are only two puzzles that I have combined, although you have ...
1 vote
164 views

### Filling in an 8x8 minesweeper grid with mines (Day 8: Not a single mine)

Difficulty (approximate): ★★★☆☆ Contains: Double mine, triple mine Now you might be wondering: If this puzzle contains not a single mine, then why does it contain mines? Well, that's because there ...
828 views

### Symmetries – a Quadritaisho puzzle

This is part 43 of the puzzle series Around the World in Many Days. Each part is solvable on its own. Dear Puzzling, This is a Quadritaisho puzzle. Divide the grid into rooms by drawing borders along ...
107 views

### A Hokuro, but with a twist!

Recently, I created my first Hokuro puzzle, which was received really well. However, this time, there is a twist! Not with the rules or anything, however, it is combined with a Nonogram! Luckily, the ...
1 vote
183 views

### A 6x6 table with nothing filled out?

So as you might or might not know, I can be quite evil sometimes, especially with my Hidato puzzles that contain no numbers. But, today, I decided to give you an enigmatic-puzzle! This means that you ...
114 views

### Anyone up for a 3x3x3 Hidato?

So, I have been pretty evil with how I make Hidato puzzles lately, with there being no numbers. To make up for it, I have decided to make a 3x3x3 Hidato for you all. Yes you read that right. I made a ...
1 vote
145 views

### How would I be able to solve this difficult Hidato?

So I was doing Hidato puzzles on the official Hidato site when I came across this puzzle that I am having trouble solving, and while I have been able to solve it partly, I don't think that I'm going ...
118 views

### A Hidato, but with no given numbers? #2: 5x5

Previous puzzle As you may or may not know, I can be a bit evil sometimes. Today, I am going to give you a 5x5 Hidato with no given numbers to start. However, this isn't a Mobius Strip puzzle like ...
348 views

### The puzzle of the day

This is called Hidato or Snake Puzzle ! The goal of Hidato is to fill the grid with consecutive numbers that connect horizontally, vertically, or diagonally. For your help, the grid is already filled ...
1 vote
111 views

### A Hidato, but with no given numbers?

I can be a bit evil sometimes. Today, I am going to give you a Hidato with no numbers! It gets worse: This puzzle is on a Mobius Strip Y[1] However, I will give hints as to what the numbers are, so ...
1 vote
116 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 ...
687 views

### A Hidato, but with a complex twist!

Today's Hidato puzzle has a pretty complex twist. What is the twist, you ask? This is what the twist is: There are three different colors: Yellow: Represents a prime number Green: Represents a ...
890 views

### Double Choco: Snaking

Rules of Double Choco: Divide the grid into rooms along grid lines. Each room contains two halves: one orthogonally connected area of shaded cells and one orthogonally connected area of unshaded ...
121 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 ...
198 views

### My first puzzle combination: A Nonogram and Hidato

Today's puzzle is a bit strange. Why, you might ask? Because it is a Nonogram and a Hidato combined! Rules of Nonogram: The grid must be colored or left blank according to numbers at the side of the ...
1k views

### A Trivial Pursuit #12 (Sports and Leisure 2/4): Logic Boat

This is part 12 of A Trivial Pursuit, a 25-part puzzle hunt. Each part is solvable on its own, with the exception of the meta-puzzle at the end. This is a variation on a Battleships puzzle, where the ...
412 views

### A (maybe) simple Hokuro puzzle

Hokuro is a puzzle that was introduced to the Puzzling Stack Exchange on December 2nd, 2020 by sarsapilla as an entry for Fortnightly Topic Challenge #44: Introduce a new grid deduction genre to the ...
1k views

### Hokuro Puzzle: Introduction

This is an entry for Fortnightly Topic Challenge #44: Introduce a new grid deduction genre to the community. This puzzle type is inspired by Kakuro, and it has similar rules. Kakuro is short for '...
283 views

### A fun and simple Nonogram... ...with a cipher

Goal of this puzzle: Find the hidden message in this Nonogram that I created. The puzzle: play online Hint:
210 views

### Touching Base (Checkered Fillomino)

This is a Checkered Fillomino puzzle, with the following rules (adapted from the linked page): All numbers on the grid must be part of a polyomino of the same value. No two polyominoes of the same ...
160 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 ...
384 views

### A 4x4 sudoku shouldn't be that hard, right? Right?

Note: this is not in conjunction with my Minesweeper puzzles Got this idea from one of Cracking the Cryptic's videos, I don't remember which one though. This exact puzzle is still overall unique. ...
103 views

### A 10x9 Hidato puzzle with a cipher

rot18(A se zgfwkldq jwsddq tsv sl ujwslafy hmrrdwk kg zghwxmddq sl kgew hgafl A sulmsddq kzgo aehjgnwewfl dgd) You might note that something is off about the following Hidato puzzle. Well, I guess in ...
108 views

### Filling in an 8x8 minesweeper grid with mines (Day 9: Complex mines)

Contains: Complex mines ($i$ mines, where $i:=\sqrt{-1}$), Anti mines (-1 mines) Note: This is in conjunction with my Minesweeper puzzles Sorry for not posting a Minesweeper puzzle yesterday. I will ...
710 views

### An introduction to Hidato (also known as Hidoku)

Note: this is not in conjunction with my Minesweeper puzzles In all honesty, I don't know why I decided to look up this type of puzzle since I also have never heard about it, and there doesn't appear ...
69 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, ...
1 vote
98 views

### Filling in an 8x8 minesweeper grid with mines (Day 6: Anti-Mines - A better introduction)

Disclaimer: ascii85(Z85 (ZeroMQ) encoding)(...
1k views

### Very small regional Yajilin

This puzzle is part of the Monthly Topic Challenge #14: Think inside the (very small) box!. Rules of regional Yajilin: Shade some cells in the grid. Two shaded cells cannot share an edge, but can ...
142 views

### Filling in an 8x8 minesweeper grid with mines (Day 5: Mod 4)

Disclaimer: ascii85(z85 (Zero MQ) encoding)(...
1 vote
96 views

### Filling in an 8x8 minesweeper grid with mines (Day 4: Looking Up)

We have a sort of weird condition for the tiles today. What is that, you ask? Well, we actually have 2: The visible neighbors are different. Here is what they will be for today (the "x" ...
775 views

### The temple of tourists and tables

11 tourists are standing in an ancient temple (6x6 grid). The temple contains 16 stone tables. Each tourist is facing either north, south, west, or east and sees a different number of tables. The ...
1 vote
89 views

### Filling in an 8x8 minesweeper grid with mines (Day 3: Zen Garden Intro)

This day is inspired by Day 20 of the Minesweeper Advent Calendar on heptavegeesimal.com rot13(ab jnl! vzntrf jbex ba gnoyrf! :Q) okay hopefully this is my easiest Minesweeper puzzle so far Today we ...
146 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 ...
349 views

### Filling in an 8x8 minesweeper grid with mines (pt. 1: Rectangle)

Can you detect where the mines are in this 8x8 Minesweeper grid containing single, double, triple, and anti-mines? 1 3 4 -1 21 5 3 1 9 3 -1 3 -5 -4 -3 13 4 5 20 12 5 5 Notes: Anti-...
189 views

My friend from America was going to watch a game and wanted to bet I couldn't guess where he was going. The answer lies in the Quadritaisho puzzle below. Can you help me find out where he's going to ...
119 views

### Help me with Slitherink puzzle (honeycomb) solution

I got stuck on this level (Honeycomb/Large/Hard/#12) and I always end up having issues with the part that I circled with red because it either wouldn't add up or there would be a space that's not ...
478 views

TL;DR: Nikoli's Tentai Show, but with four different types of symmetry. Rules of Quadritaisho: Divide the grid into rooms by drawing borders along grid lines. Each room contains exactly one symbol (...
239 views

### SlitherLITS revisited - Do colour outside the lines

This is a follow-up to SlitherLITS: Don't colour outside the lines After creating that puzzle, I've been wondering whether it was possible to create a SlitherLITS puzzle where all the regions outside ...
1 vote
126 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 ...
459 views

### A Trivial Pursuit #19 (Geography 4/4): Glass

This is part 19 of A Trivial Pursuit, a 25-part puzzle hunt. Each part is solvable on its own, with the exception of the meta-puzzle at the end. Front of menu card: STIV'S SPEAKEASY COCKTAILS BOUR....
744 views

### Colourful Scenery

This is part 41 of the puzzle series Around the World in Many Days. Each part is solvable on its own. Dear Puzzling, This is a Word Nurikabe puzzle. Shade some cells in the grid. Shaded cells must ...
502 views

This is part 40 of the puzzle series Around the World in Many Days. Each part is solvable on its own. Dear Puzzling, The puzzle on the left-hand side is a regional Yajilin. Shade some cells in the ...
1k views

### The Puzzling Free-to-Play Escape Room, naturally!

An entry in Fortnightly Topic Challenge #50: Escape Rooms Without revealing too much, knowledge of geek culture and/or superb Google skills are required for this puzzle. Coming from an anime ...
331 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 ...
274 views

### Another nonogram with story

Another nonogram with story but this time it's ZEBRA type. Clues in darker color describe what should be marked as FILLED. Clues in lighter color describe what should be marked as BLANK. After my ...
851 views

### Before the Common Era

This is part 39 of the puzzle series Around the World in Many Days. Each part is solvable on its own. Dear Puzzling, The grid on the left-hand side is a KenKen puzzle. Fill the grid so that every row ...