[PDF.45yn]  Logical Deduction Puzzles..* George J. Summers

It’s not elementary, but you will need Holmes’s famed powers of deduction to solve these crafty puzzles. Here’s how it goes: at the end of each conundrum, you’ll find at least one condition—and sometimes more—that the solution must meet. For example, here’s the first, relatively simple problem:

Mr. Scott, his sister, his son, and his daughter are t...