Questions tagged [reference-request]

For questions seeking references, e.g. to literature about puzzling or to a specific puzzle.

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8
votes
1answer
715 views

Wanted: Sudoku data in CSV

I am a computer science student looking for unsolved sudoku games that are valid and available in a comma separated text file. Does such a prepared data set exist and where can I find such a data set? ...
5
votes
1answer
220 views

Origin of the “Ages of Three Children” puzzle (Census-taker problem)

There is this puzzle and many variations of it, but it usually comes by as "Ages of Three Children puzzle" (wikipedia article), or as the "Census puzzle" (mathsisfun.com, youtube ...
3
votes
1answer
403 views

How many unique “miracle sudokus” are there?

The following "Miracle Sudoku" puzzle contains only two starting numbers, plus some additional rules that end up revealing the whole board: https://www.youtube.com/watch?v=yKf9aUIxdb4 (or Sudoku ...
2
votes
0answers
79 views

Looking for a book or collection of specific type of puzzles

This is a reference request: my apologies in advance if it's not entirely appropriate for this SE. I recently came across this little puzzle: There are 20 apples in a basket on the floor. Around the ...
3
votes
1answer
153 views

Where can I get free words list for my word games?

I'm making word games. Where can I find free word lists (English, French and German) that are free to use, even for commercial purposes?
0
votes
2answers
282 views

CiSRA Puzzle Hunt Backups?

I found this article describing what makes a good puzzle, and it references several puzzles which, as best as I can tell, were designed for something called the CiSRA Puzzle Hunt. However, the website ...
1
vote
1answer
157 views

Listing of New York Times celebrity crosswords?

The New York Times crossword for Friday May 12 was co-authored by Bill Clinton, as part of an ongoing series of celebrity crosswords. Actor Jesse Eisenberg did one too. Is there a way to get a list ...
6
votes
2answers
2k views

How do you decrypt a keyword transposition cipher without keyword?

I have computed the keyword length using I.C. but I don't know how to derive the first keyword. This polyalphabetic cryptogram requires two keywords to break, but I am not sure how to get either of ...
5
votes
1answer
400 views

References - In what order should I start reading the books by Raymond Smullyan?

The books by Raymond Smullyan have caught my fancy because they seem to teach mathematical logic using puzzles. However since I am very weak at solving puzzles in general and logic puzzles in specific,...
5
votes
2answers
1k views

Where can I find diagramless fill-in puzzles?

From the answers that I got over here, I found out that the type of puzzle that I was looking for would be referred to as diagramless fill-in puzzle. (A cross of a diagramless crossword and a fill-in ...