Situation: I am sitting by a square table and there are only two chairs on the side as mine. There is no more chair or table directly to my left.
Alternative situations: I am sitting on a chair, left side of the room closest to the round table having a snack. I am sitting at a rectangular table in a restaurant. I hear the voices of other customers sitting in the circular tables behind me and especially those sitting at the rectangular table to the right of mine. I am sitting.
Question: Can I reach the chair behind me without walking?