PLEASE: To be fair to other solvers, for this puzzle, do not post partials until you've got (almost) all of the wordplays correct. The answer to this puzzle is a list of eleven thematically related words or proper names or phrases. Each of these is clued cryptically, and the theme is to be determ...

Harou, a Japanese teacher in the school, noticed a ship made of paper outside her office. When she unfolds the paper, she saw something strange. There is something that looks like a riddle, followed by some weird arithmetic lines. Riddle: My prefix is something that controls you. My suffix is s...

My professor at college loves geometry and discrete mathematics. He gave us a question let see if you can solve it. He asked us how many unique squares which have the same size and each corner colored in red,green and blue? Two squares will be called Unique to each other if no matter how you rot...

I'm important in geometry If you add a letter, you get the German translation If you re-order the letters of the Englisch word and add brackets () and multiply, it becomes imaginary If you re-order the letters of the German word and add brackets () and multiply, it becomes real Find the word with...

In this puzzle, each square must contain a positive integer. All rows, columns and boxes must contain an arithmetic progression of length 9. Good luck!

Two market women were selling their apples, one at three for a penny and the other at two for a penny. One day they were both called away when each had thirty apples unsold: these they handed to a friend to sell at five for 2¢. It will be seen that if they had sold their apples separately they wo...