Puzzles placed
at single sheets of paper; to solve them you'll need just a pencil
and... an eraser (sometimes).
Webvroom Puzzles
Free word search puzzles, number search puzzles
and sudoku puzzles. Printable and suitable for kids and adults. Good
for learning, education or for personal enjoyment.
A site of free PDF puzzles. The collection is
constantly growing. A lot of intriguing challenges. One of the
features is the loop-de-loop puzzle series. Run by David Millar.
This site claims to be
the world's first site to distribute original new puzzles every day.
They distribute three new problems every day out of five puzzles:
Sudoku, Edel, Kakro, Slither Link and Nurikabe. All of these puzzles
are available in Java and PDF versions and you can play many of them
for free as well.
A Japanese site on pencil-n-paper puzzles. Although some pages are in Japanese only, you can get there many "Paint by Numbers" puzzles in the Regular Puzzles section. They are displayed in PDF format, and updated every Thursday.