These actually are standard problem types once you get used to them. They sell books with logic puzzles like this. One example is "Sherlock" by Everett Kaser.

These actually are standard problem types once you get used to them. They sell books with logic puzzles like this. One example is "Sherlock" by Everett Kaser. http://www.kaser.com/ http://www.kaser.com/ It's like giving someone a Sudoku problem on a Math test. If you'd never seen it before, you'd probably fail, but if you'd seen it before, it's easy.