A classic puzzle

This is an old puzzle, but interesting if you haven't heard it before.

A hunter walked one kilometer south from his camp. Then he walked one kilometer west. There he shot a bear. Then he walked one kilometer north, and found that he was back at his camp. What color was the bear?

The answer can be found here. A lot more puzzles collected by the same guy can be found here.

The magically appearing square unit

Interesting puzzle: both figures above are made of identical components, yet they seem to have different areas. How could that be? Click the image for the answer.

Tangram

There are lots of tangram games on-line, but this one looked to be the best to me (you'll like it because it allows cheats). I find these puzzles almost impossible and they give me a head-ache. They are a good mental work-out, however. Puzzles a bit like this are sometimes used on IQ tests, because (alas for me) good spatial reasoning is considered to be a sign of a high IQ.

PuzzPinball

Quite a good game where you must complete the pinball level by adding pieces. Play it here. Photo and walkthrough here.

Saturday Puzzles!

I have got three good game puzzles: Best Friends Forever (better then it sounds), Shift and Shift 2 (much harder then Shift 1). Photo: here.