Puzzle Piece Types Explained: Edge vs Corner Pieces by Knob Count #3307650 (License: Personal Use)

The image displays two columns: “Edge pieces” on the left and “Corner pieces” on the right, each subdivided by the number of knobs (0 to 3). Edge pieces typically have one straight side and varying numbers of knobs on the other three sides, while corner pieces have two straight sides and one or two knobs. The layout helps illustrate how puzzle geometry determines piece placement and assembly strategy.

Used in educational content about jigsaw puzzles, design tutorials for puzzle creators, or hobbyist guides; matches user intent to understand puzzle structure, solve efficiently, or design custom puzzles.