One of the more fun types of caches involve solving puzzles or games, these often don't require any special skill other than a familiarity with the type of puzzle involved. Sometimes they can be really straightforward like a simple suduko, but sometimes cachers like to increase the difficulty to make up for such a simple solution.
For some of the number games you might be able to find an online solver, (but that's cheating!), otherwise you might find it easier to either print out or copy down the puzzle in order to complete it. Occasionally you'll find an actual physical puzzle which requires solving.
To solve these you will need to work out what puzzle you're trying to solve and then have the patience to solve it. You'll normally need to use the results of the solved puzzle and apply it to a set of coordinates. Sometimes the results are the coordinates.
Some local caches which involve games and puzzles include the vexing PacMan by thetallnomad (GC6NB1B), Muzha / 木柵 by AJ&Rose (GC791BZ) and the second cache in Steve4nlanguage’s Queen series (GC70DD8).
PUZZLE GYM SERIES
GAME GUESSWORK
NO NO YES!
