Use it to drag, by selecting the piece with the left mouse button (and maintained clickedt), by conducting rotations with the right button, set the piece above the grid in the right place, and then release the mouse button.

Depending on the chosen option in the Preferences, you can:
- Authorize the rotation pieces of a jigsaw puzzle (it becomes very complicated)
- Have one or more possible position of the working piece on the grid when generating,

Using the button "Find" of the toolbar, parts already found in the grid are shown.

When pushing button "Variant-> Possible" of the toolbar, possible values are filtered using combinations available, if only one possible solution. For the resolution methods, select the method "Variant" to take into account these combinations.

You can specify a piece of the puzzle, if it is ever found (or not), with thr right mouse button.

Shown is the Grid: