The task is to find the longest intelligible and grammatical English sentence containing only words of two or fewer letters. To limit the possibilities, you may use only the following words: Single letter words, "I" (pronoun), "A" or "a" (indefinite article) Two letter words listed here https:/...

This is not a puzzle, this is a question about a certain puzzle, Dog's mead. Several forms of this puzzle have been known, and I'm referring to this particular form. There are some history on that page of researching for authorship of the puzzle, and how many, slightly varies versions came to be....

Every man dog and millipede on the planet knows there are seven possible pieces in Tetris. In each of the following puzzles Joe Bloggs wants to obtain a specific cheevo within the first seven moves, without repeating any pieces. Assume that (1) Joe Bloggs can “call” the order in which the pieces...

I speak without a mouth and hear without ears. I have no body, but come alive with the wind. What am I?

This puzzle stems from these type of questions by Dimity Kamenetsky. Creating the hardest 7x7 maze Creating the hardest 6x6 maze I wanted to know how the best possible solution would change, if I were to add in special squares with different effects. I have some more ideas I would like to try if ...

It swims. Does a backflip. Still swims. What it?

I recently came across this so-called ‘Keithsberg Riddle’, see, e.g., this YouTube video. It's a combination of 21 riddles that must be combined to derive a final answer. $1 million is offered for the person who can solve it... :-) It looks like one of the most complex riddles I've ever seen, esp...