We have three blocks. We call them A, B and C. Block B is to the right of A. Block C is above B. Block A has a medium black square. Block B contains a medium yellow square and one medium black square. The medium yellow square is touching the bottom edge of this block. It is below the medium black square. Block C has one medium yellow square. It also contains one medium black square. The medium black square is below the medium yellow square.
Is there a medium black square near to all medium yellow squares?