Magic grid

Purpose puzzle - arrange color cells so that each row and each column do not have two identical colors.
However, some cells can not be moved. They are marked with black cross.
The game is divided into four stages:
1 - Grid 4x4, Amount locked cells from 3 to 5.
2 - Grid 5x5, Amount locked cells from 4 to 7.
3 - Grid 6x6, Amount locked cells from 5 to 9.
4 - Grid 7x7, Amount locked cells from 6 to 11.
At the beginning each stage is issued a certain number of points, which decreases over time and for each movement of the cells.
The result is saved with the passing of each stage. Your result can be added to the overall score table.