By controlling the white "angel" token, you have to collect all yin-yang tokens (the "souls") before you get caught by the black "dark force" token.[more]
You control the angel (white disk) by clicking the target position.
You cannot click a wall.
The angel can move in the directions north, south, east, and west.
The angel slides any number of empty spaces and must land on an empty position or on a position occupied by a soul (yin-yang token).
There are 10 challenges with fixed setups and three challenges with random setups. In the random setups, you have to click the empty board first to let the system drop all tokens.
The first random setup uses 10 randomly dropped walls and 10 randomly dropped souls; the second one uses 15 walls and 15 souls, and the last one 20 walls and 20 souls.[less]
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.