The dark force slides any number of empty spaces horizontally toward the angel unless blocked; otherwise it slides any number of empty spaces vertically toward the angel unless blocked; if it can't do either, it must wait (pass a turn).
The dark force must move onto the angel to capture it. The dark force cannot move onto a soul or a wall.
Some randomized setups may not have a solution. However, these cases seem to be rare.
Once you have solved an angel puzzle, try to solve it again using fewer moves.
This game was previously published as the Zillions game "Angel Maze" by the author.