Two blocks, named AAA and BBB exist in the image. Block AAA is south of block BBB. Disconnected from this block there is block BBB. A medium yellow square and a medium black square are inside block AAA. Another medium black square is inside and touching block AAA. The medium yellow square is to the south of medium black square number one and touches this object. Block BBB covers a medium blue square.
Where is medium black square number one regarding the yellow shape?