The game "Dimensions".

Why "Dimensions"? Do you never came to mind that the usual packing of dominoes of a plane (see figure 1) contains at once two  absolutely different "Worlds". The world of "even squares" and the  world of "odd squares". ("Even" square - is that for which sum X  and Y component is even; "odd" - it is similar. In figure 1 only even squares are noted). If we spend from squares an arrows in a direction of dominoes it turn out to be two "system of rivers", absolutely different "worlds". (Figure 2 and 3). (Those squares into which "nothing flow" we named "mouth". They are designated by increasing circles).





If we "close" the platform (that connect the right and the left, and the top with the bottom) that in the ends all our rivers will  join to a closed curves. (We named it as "oceans"). The sum lengths of both your "oceans" indicate of your points. Make your "oceans" more length, and the parallel dimensions "oceans" - less lengths.

You can do it by clicking the mouse in corresponding circles (see figure 1). It will turn the pair of dominoes on 90 degrees. One turn can  considerably (in two times!) changes the score. 

Very important in the program is the sound . If after your press you have positive change of the score you can hear  "the pleasant" sound;  if negative change of score - "unpleasant". Urgently click again (return a field in the previous condition) and will hear - "a pleasant".

Game lasts for one minutes. The purpose - to get as much points  as possible on "intermediate finishes".
    
By default your opponent is the computer. For game "on a network"  it is  necessary to one players to press  Network-> Connect. Then type IP address of the contender, connect  with him and press button "New". If connection has passed normally your fields will change on the another random. Your contender can press too the button "New" . (By pressing button "New" you a choice for you - "the direct" world, and for the contender - "parallel"). Actually game will begin when anyone from participants press button Play.