This site contains logical puzzles. It contain puzzle types which appears in World Puzzles Championships. This site also contains Sudoku types which appears in World Sudoku Championships.

Palmer Mebane (MellowMelon) is a two-time member of the winning US team in the World Puzzle Championship. Hundreds of Palmer's logic puzzles of a wide range of difficulty levels are available here to enjoy.

Run by Thomas Snyder, master puzzlesmith and winner of multiple World Puzzle Championships and World Sudoku Championships, this blog provides beautiful hand-crafted logic puzzles, plus news on various puzzle competitions.

This blogger reviews a variety of "real-world" puzzles. You'll find his thoughts on box puzzles, chains, cubes, discs, and more.

This blog forces you to look again, to notice the hidden things, and to think twice about what you've seen. You'll find awesome illusions that use negative space, patterns, and more.

While this is definitely a kid friendly site, adults will enjoy these illusions too! There are lots of anomalous motion illusions here and readers are invited to submit their own images.

Ambigrams are puzzling little pieces of typography. This blog features some of the best.

If you love ambigrams, then you must visit Ambigram Magazine. This site invites you into the modern ambigram world and offers articles, news, and much more.

Be careful - this site can be addictive! Brain Boggling is full of optical illusions, brain teasers, and fun games. You'll find riddles, puzzles, and strategy games too.

This blog aims to trick your mind using cold hard cash. You'll find tutorial videos, reviews, and more.