Display images and move them

[AL]

Hello,
I am developing a checkers game for Mac and Win.
I am displaying each piece in a QLabel in the following way

QLabel *piece = new QLabel("piece",this);
piece->setPixmap(QPixmap("piece.png"));

QLabel *piece = new QLabel("piece",this);
piece->setPixmap(QPixmap("piece.png"));

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Now I have to display kings and I would like to overlap two images (piece.png) in the same QLabel because I have to move the two pieces (king) together in my animations. How can I do that?

Tx a lot!!