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17 votes
1 answer
829 views

Ingrid Deduction pops by with a puzzle

The other night I was sat at home in Providence when the doorbell rang. To my surprise, my very good friend Ingrid Deduction stood on the step, a huge grin on her face and a piece of paper held out ...
Stiv's user avatar
  • 146k
43 votes
1 answer
3k views

This new puzzle type needs a name {EXTREME EDITION}

A companion puzzle to the 'This new puzzle type needs a name' series, and inspired in part by @JeremyDover's answer to a recent question. Usually, puzzles in this series comprise a mash-up of two ...
Stiv's user avatar
  • 146k
28 votes
2 answers
902 views

Tribute to Clifford Possum Tjapaltjarri

The background text that follows is in this case not part of the puzzle, nor fictitious. The puzzle, which is self-contained, consists entirely of the image below; I have composed it as a genuine (...
Anon's user avatar
  • 5,430
10 votes
3 answers
839 views

Cipher text on an ancient wall

The following text was found written on the wall of an ancient tomb: $\text{DXFDMKEPU}$ Can you decipher what it means? Nearby the wall, this piece of parchment was found. Perhaps it is a clue ...
DenverCoder1's user avatar
  • 10.5k
11 votes
2 answers
2k views

Reverse minesweeper?

The puzzle below, when filled out completely, is a valid minesweeper board. Some of the mines and numbers have already been filled in. Can you fill in what is missing and use the solved grid to find ...
DenverCoder1's user avatar
  • 10.5k
22 votes
2 answers
1k views

Complaint at the PSE lounge

While walking through the PSE lounge, I noticed a piece of paper on one of the tables. Picking it up, I saw several things. The first, was a couple of sentences at the top: I love this place! But ...
Jens's user avatar
  • 8,870
15 votes
2 answers
488 views

The entrapment of Beastly Gerbil

Part 1: The disappearance of Beastly Gerbil Part 3: The escape of Beastly Gerbil I've been trapped here for what feels like forever. This is all I've known. Darkness. The occasional flash of light, ...
Beastly Gerbil's user avatar
8 votes
2 answers
300 views

I know I should solve this Masyu... But... How should I make this puzzle more colorful?

I know I should solve this Nurikabe variant... I know I should shade all Masyu circles... I know I should not let $2 \times 2$ unshaded squares appeared... I know I should solve this Masyu... ...
athin's user avatar
  • 34.3k
18 votes
2 answers
641 views

A colorful metapuzzle (of a sort)

edit: realized two puzzles ended up being variants. Replaced subpuzzle 5 completely, and swapped subpuzzle 2 to the original version. Either version has the same solution. edit 2: my apologies. this ...
Aranlyde's user avatar
  • 1,614
7 votes
1 answer
191 views

A Grid with some Green Cells

So a friend wanted me to try out the reverse-puzzling riddle he created. It consisted of a 4x4 grid with a digit in each cell and a single closed loop drawn along the edges of its cells. Also some of ...
Zilvarro's user avatar
  • 683
11 votes
3 answers
929 views

Puzzle needs a name

Inspired by @Stiv's This new puzzle type needs a name series, what is the name of the puzzle below? Start by solving the (quite tough) Nonogram, then apply some grid-deduction-deduction and discover ...
Jens's user avatar
  • 8,870
27 votes
2 answers
864 views

The disappearance of Beastly Gerbil

Part 2: The entrapment of Beastly Gerbil Part 3: The escape of Beastly Gerbil This is an unusual call in. As a private detective you have been asked to investigate several odd cases, but this you're ...
Beastly Gerbil's user avatar
25 votes
1 answer
2k views

This new puzzle type needs a name {6}

I believe I have invented** a new type of puzzle... What is its name? Begin by solving the Fillomino puzzle: Rules of Fillomino (adapted from Nikoli) Fill in all empty cells with numbers under the ...
Stiv's user avatar
  • 146k
6 votes
1 answer
236 views

Pandiagonal Magic Takuzu

Here's a puzzle type I call Pandiagonal Magic Takuzu. It's inspired by @Stiv's series "This new puzzle type needs a name", except you get the name up front. Can you solve it?
Jens's user avatar
  • 8,870
18 votes
2 answers
911 views

This new puzzle type needs a name {5}

I believe I have invented a new type of puzzle... What is its name? Colour-blind-friendly version available here. Begin by solving the 9x9 sudoku; each of the 9 symbols ...
Stiv's user avatar
  • 146k
16 votes
1 answer
945 views

On The Subject of Battleships

(This is part of a series of puzzles written for Timwi for a Secret Santa puzzle exchange, themed around various custom modules for the game Keep Talking and Nobody Explodes. No KTaNE knowledge is ...
Deusovi's user avatar
  • 148k
12 votes
1 answer
1k views

This new puzzle type needs a name {4}

I believe I have invented a new type of puzzle... What is its name? Begin by solving the 16x16 sudoku; each of the digits 1-16 must appear exactly once in each row, column and thick-bordered 4x4 ...
Stiv's user avatar
  • 146k
18 votes
2 answers
2k views

This Nonogram seems a bit...... off

Hmm...... Did I miss something? The hidden word has six unique letters anyway...... Hint 1: Hint 2: Hint 3: Addendum: There is a (very) minor fix to ensure the puzzle "uniquely solvable", adding 1-...
athin's user avatar
  • 34.3k
13 votes
1 answer
623 views

On The Subject of X-Rays

(This is part of a series of puzzles written for Timwi for a Secret Santa puzzle exchange, themed around various custom modules for the game Keep Talking and Nobody Explodes. No KTaNE knowledge is ...
Deusovi's user avatar
  • 148k
28 votes
1 answer
2k views

This new puzzle type needs a name {3}

I believe I have invented** a new type of puzzle... What is its name? ** Well, 'adapted' an existing one, really... Colour-blind-friendly version available here. Those without colour-blindness ...
Stiv's user avatar
  • 146k
26 votes
4 answers
2k views

Another new puzzle type needs a name

For an example of how this type of puzzle works, see here... I believe I have invented another new type of puzzle... What is its name? Colour-blind-friendly version available here. Begin by ...
Stiv's user avatar
  • 146k
106 votes
2 answers
8k views

This new puzzle type needs a name

I believe I have invented a new type of puzzle... What is its name? Colour-blind-friendly version available here. Begin by solving the 16x16 sudoku; each of the digits 1-16 must appear exactly ...
Stiv's user avatar
  • 146k
16 votes
2 answers
1k views

Twelve Labours - #02 Lernaean Hydration

This puzzle is part of the ‘Twelve Labours’ series. Previous instalments can be found here: Prologue | 01 His first labour now complete, Hercules made his way up the street to the storage depot for ...
Stiv's user avatar
  • 146k
13 votes
1 answer
471 views

Piece de Resistance - Jack in all Tags... But Master in All?

Jack in all Tags... But Master in All? This puzzle is part of the "Piece de Resistance" series. Go back to Part 1 (Ace) for the story.Ace Two Three Four Five Six Seven Eight Nine Ten Queen King... ...
Omega Krypton's user avatar
11 votes
2 answers
598 views

Spiral Stumper Series: Instructionless Puzzle

Spiral Stumper Series is a $5$-puzzles series taken from the Final Round of a local (national) contest, KPK, which has been ended recently and authored by me. The theme is spiral and each puzzle is ...
athin's user avatar
  • 34.3k
14 votes
3 answers
602 views

Instructionless: Sieve of Eratosthenes

This is an instructionless puzzle: work out the rules and then solve the main puzzle. An example and its unique solution have been given to you, as well as two failed solutions with errors marked. ...
boboquack's user avatar
  • 22k
8 votes
1 answer
483 views

(10 of 11: Nurikabe) What is Pyramid Cult's Favorite Topic?

Dear PSE users and moderators, I’m new here in PSE, but I really need your help. There was this person who gave me a black envelope consisting 10+1 pages of puzzles, and also a scribble saying: “Find ...
athin's user avatar
  • 34.3k
7 votes
1 answer
423 views

(9 of 11: Shikaku) What is Pyramid Cult's Favorite Stationeries?

Dear PSE users and moderators, I’m new here in PSE, but I really need your help. There was this person who gave me a black envelope consisting 10+1 pages of puzzles, and also a scribble saying: “Find ...
athin's user avatar
  • 34.3k
11 votes
1 answer
666 views

(8 of 11: Ripple Effect) What is Pyramid Cult's Favorite Skill?

Dear PSE users and moderators, I’m new here in PSE, but I really need your help. There was this person who gave me a black envelope consisting 10+1 pages of puzzles, and also a scribble saying: “Find ...
athin's user avatar
  • 34.3k
11 votes
2 answers
871 views

(7 of 11: Fillomino) What is Pyramid Cult's Favorite Shape?

Dear PSE users and moderators, I’m new here in PSE, but I really need your help. There was this person who gave me a black envelope consisting 10+1 pages of puzzles, and also a scribble saying: “Find ...
athin's user avatar
  • 34.3k

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