Rules
Place some stars in the grid, no more than one by cell, such that the number of stars in each row, column and region equal the indicated number. Stars cannot share an edge or a corner.
Example
Here is an example of a Star Battle grid and its solution.
Solve the example online here.
History of Star Battle
According to gmpuzzle, Star Battle was invented by Hans Eendebak from the Netherlands in 2003 for the World Puzzle Championship.