Picture sudoku puzzle on a 4 by 4 grid using pictures of Mailbox, Delivery, Post Office, and Envelope. Drag the picture cards into the 6 empty cells so that each row, each column, and each 2 by 2 box contains every picture.
Picture sudoku puzzle on a 4 by 4 grid using pictures of Mailbox, Delivery, Post Office, and Envelope. Drag the picture cards into the 6 empty cells so that each row, each column, and each 2 by 2 box contains every picture.
