Russian
	The "Black box" logical game

This is a Freeware application.
You can download the setup package of the game here.

Attention!
The game should be run on
Windows Vista, Windows XP SP2, Windows Server 2003 SP1 or Windows Server 2008
with the Microsoft .NET Framework 3.0 package installed.
If you have Windows Vista or Windows Server 2008 than this package is already installed on your system and you can immediately download and install the game.
If you have Windows XP SP2 or Windows Server 2003 SP1 and this package wasn't installed before than you have to download and install Microsoft .NET Framework 3.0 Redistributable Package.
You can download it from this page. Look out! The full installation size is about 50 Mb.

Game rules

Black box is a square box that contains cells.
Some of those cells can contain a ball but you cannot see them.
I can emit ray into the black box from its sides.
Rays interact with balls inside the black box according to several rules.
You have to determine the location of all balls in the black box relying on the results of emitting of the rays.
Following are the rules of the rays and balls interaction inside the black box (see the game field picture above):

• Ray that doesn't come across with any ball will go straight through the box

• Ray that hits a ball will be absorbed (it will not come outside the box)

• Ray that goes one cell to the left or to the right of a ball will be deflected by 90 degrees out of the ball

• Ray that goes between two balls placed at the distance of one cell from each other will be turned around - deflected by 180 degrees

• Ray that goes into the black box on the left or on the right side of a ball that stands by the box's side will be turned around immediately

• Two or more balls standing near each other could make the ray's routes be merged. This can cause additional difficulties in finding the correct location of the balls.

There are more detailed rules description on the Help window in the game itself.
You can also read about this game in Wikipedia.

Black Box
created by Vladimir Kryazh, kryazh@inbox.ru
last modified: April 14, 2008