This puzzle has multiple solutions. In some, all of the pieces face the same direction, while in others, they are oriented differently.

Start by assembling the two semicircular sections.The outer edge of the heart is always formed by pieces with straight or square edges. If a piece has only rounded edges, it must connect to another rounded piece that also has a straight or square edge on its opposite side.It may help to sort the pieces first:place the pieces that are rounded on all sides together,then place the pieces that have rounded edges plus one straight or square edge below them.Once you do that, the possible combinations become much easier to spot.Here are all of the rounded pieces:

One of the semicircular sections looks like this:

It may be easier to assemble all of the straight-edged pieces outside the frame first, creating a larger shape that you can later insert into the puzzle.This makes it much easier to rotate and rearrange the pieces. Sometimes you'll discover that a piece you originally thought belonged on the edge actually fits perfectly in the middle once the surrounding pieces fall into place.

The straight piece belongs along the edge of the frame.

Next to it are the square piece and the zigzag-shaped piece.