In Promotion zones a Child becomes Prince or Princess. They are located on the opposite side of the Child pieces. All the ordinary pieces move like in normal chess with the exception of the usage of the middle square. When you stand on i1 you have to move diagonally out of it. Child A Child moves one step to the side and captures diagonally up and down to the side it moves.
White children move from left to right and Black from right to left.
If a capture brings a child inside the middle square it is trapped there until it can catch someone outside or is captured. Prince The Prince can either move one step diagonally in any way or jump two steps up, down, left or right. In the beginning of the game it is a lot about what to sacrifice for what. Follow these moves and see the use of the i1 square. As you see the Children, Princes and Princesses are left out of the first moves.