Types of Puzzles

Some puzzles have particular design features that you might be looking for:

Irregular edge - extra hard

Straight edge - a bit easier

"Normal" shaped puzzle pieces but with whimsy pieces  - a bit easier

Double-sided - extra hard

Escher inspired tesellations of pieces extra hard

Drop-outs  - extra fun

Bigger pieces - a bit easier

Super-fancy piece shapes extra fun

Split tendril connectors - extra hard

Nestled spiral pieces - extra fun

Smoke-ring pieces - bit easier and extra fun

Complex connectors - extra fun

Multi-piece whimsies - extra fun

Puzzles where pieces can fit together wrong: