The goal of the game is gaining as much points as you can before the field is filled with blocks and you aren't able to make a move.
The game field consists of two parts: the central zone and the periferal part. The central zone is a square of 10x10 cells. When the game starts some colored initial blocks without marks are placed in the central zone. Unoccupied cells remain black. The periferal part of the field is presented by three layers of blocks from every side of the central zone. You may click on blocks from the first layer. It is the only kind of your activity. A clicked block may start moving across the central zone until it meets another block on its way. (If the lane along which the block could move contains no other blocks able to stop the clicked one, the latter just will not start moving. You may try to move another block.) When a block has been clicked and started to move, an arrow indicating the direction of the movement appears on it. This
