Look at the shadow. It's not on the floor, hence the chair is not touching the floor.
Additionally, due to the angle of the shadow on the wall, we can see the chair is not resting on the wall.
Hence it is neither resting it's full weight on the floor or wall
Additionally, due to the angle of the shadow on the wall, we can see the chair is not resting on the wall.
Hence it is neither resting it's full weight on the floor or wall