Warm up: Panel "Los Mutilados"

Los Mutilados (The Mutilated) was painted by the Equatorian artist Oswaldo Guayasamín and represents the mutilated ones of the Spanish Civil War. The picture is also mutilated in 6 parts and the boards can be ordered in multiple ways.

May you determine how many ways this panel can be assembled?
VIRTUAL TOUR through the museum that host the original painting.

You can rotate each piece just clicking on it.

Move the square boards to the black frame dragging the central point. You can also rotate any square board just clicking over it. Try to figure it out as exhibited in the museum.