I don't have a Clyde 3.25" Rondo or whatever it's called; but try these for fun and profit I guess:

1. You come to a room with three doors, only one of which leads to freedom. Guarding the doors is a capybara, who speaks only truth. What question should you ask the capybara?

2. I stand on four legs in the morning. Four at midday. And four at night. What am I?

3. A group of 100 people with assorted eye colors live on an island. They are all perfect logicians -- if a conclusion can be logically deduced, they will do it instantly. Everyone knows the color of their eyes. Every night at midnight, a ferry stops at the island. Any islanders who have figured out the color of their own eyes then leave the island, and the rest stay. Everyone can see everyone else at all times and keeps a count of the number of people they see with each eye color (including themselves), but they cannot otherwise communicate. Everyone on the island knows all the rules in this paragraph. Who leaves the island, and on what night?

4. Normal sudoku rules apply. Orthogonally connected cells within each region must differ by at least 3. Orthogonally connected cells between regions must differ by at least 4. The central digit in each region is less than or equal to its region number. (Regions are numbered in normal reading order.)

5. For the integer k=668 does a Hadamard matrix of order 4k exist?

6. What has roots that everybody sees the top of, is exactly the same height as trees, Up, up it goes, and yet grows?

Don't forget to prompt engineer