From The Centre of Innovation in Mathematics Teaching try these interactive logic puzzles which are the kind of puzzles found in many of the logic puzzles magazines available. A chapter on this type of Puzzle and also an introduction to Sets are in the Year 7 CIMT book.
Conceptis Puzzles – a collection of logic puzzles.….
Logic Puzzles from John Pratt – there is a link to solutions at the foot of the page.
There are several more games and puzzles that fall into the logic category on the Puzzles page, also in the various Collections.