JackPool-4

Mix of the Billiard with Black Jack, this time with opponent.   Your aim is to collect 21 points (Black Jack) on billiard balls.  But Your opponent is also well skilled in JackPool, so opponent has the same aim, to get 21 points. All billiard table pockets have its value, as Black Jack cards  from 2, 3,... to Q, K, A. When some ball gets to the pocket, it receives the value of this pocket. Try to collect 21 points on the sum of these balls.