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Unanswered Questions

53 questions with no upvoted or accepted answers
27 votes
0 answers
2k views

Is there a move-efficient way to rotate the center pieces on the Octo-Star?

I'm looking for a more efficient algorithm to rotate the center column of the Octo-Star puzzle 45 degrees. The situation below occurs when four properly-oriented edges are next to each other, ...
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 ...
8 votes
0 answers
201 views

Is it possible to create a knot that is locked only when the rope is stretched?

Is it possible to create a knot that is stable/locked when the rope is stretched? When the tension is relived the knot should open.
7 votes
0 answers
168 views

Logic and geometry problem 2

My question is whether or not a deadlock can occur in Crisscross. A deadlock is defined as a position, an arrangement of checkers, in which the board has been filled but neither player has won. ...
7 votes
0 answers
295 views

Who wins the game of "Sticky Gomoku" on an infinite board?

This is a Gomoku like game, played by two players with Go pieces (black and white stones) on an infinite (in all four directions) Go board. Rules Four in a row: players alternate turns placing a ...
7 votes
0 answers
373 views

Best moves for a 7X7 4 queen board

There is a 7x7 board and 2 players, each having 2 queens. The queens can move just like the queens in chess, but cannot capture each other. At the beginning, the first player places both the queens on ...
6 votes
0 answers
291 views

Trying to find a 2020 puzzle hunt with a puzzle based on Among Us

I am trying to find a puzzle hunt that I believe was held in 2020. It contained a puzzle based on the game Among Us with 26 characters, and you had to decide who were the imposters. The imposters all ...
6 votes
0 answers
190 views

Decoding a mystery sequence of falling boulders

I'm trying to unravel the algorithm for an old 1980s game called Wanderer. The game is a simple grid: 16 cells high (all visible in the image) and 40 cells wide (though not all are depicted). In the ...
6 votes
0 answers
186 views

How many items are there in the lab?

I am looking for how to complete the following question so that it gives a unique solution. Maybe somebody can give a visual solution. A lab contains experimental equipment. 24 items are ready to use ...
6 votes
1 answer
306 views

Creating accessible crosswords

Often, crosswords* posted to Puzzling have at least one of the grid or clues in an image. For visually impaired, blind, and/or screen-reader using people, or those who can't see images for some other ...
5 votes
1 answer
478 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 ...
5 votes
0 answers
263 views

The Jumbled Jaunts of Jormungandr

Jormungandr, the Snakebot of Doom has left New York. The world's armies and air forces have been decimated and cannot stop it. It has moved on from New York, and has flattened the following North ...
4 votes
0 answers
211 views

King 2 men, but don't kill a man

I found mention of this challenge in a Science paper called "Checkers is solved" from 1996, but no example was given. Beginning at starting position, play moves according to rules of ...
4 votes
0 answers
350 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 ...
4 votes
0 answers
203 views

Police and Thieves

I played this game when I was young, but cannot find it online. It is played on a checkers board (e.g. the black squares of a chess board) between two players P and T. The game goes as follows: P ...

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