Bubble Chess
Object: Checkmate the opponent's King.
 
Bubbles pop up at the squares where a piece moved from. They are neutral. They limit the range of pieces, but also protect them.
The Bubbles are captured like standard chess pieces.
 
In the variant bubbles can be popped.
 
Standard chess rules apply.
 
 
Note that pawns can move diagonally through bubbles. You can guide your pawns to certain places by creating bubbles at the appropriate squares!
 
 
More freeware as well as real puzzles and games under http://karl.kiwi.gen.nz.