C. Tao
Middlesex University
1998

There is a crucial tank battle during the Second World War. You are the tank operator 
to protect your king by shooting against opponent tanks. There are three different
 kinds of opponent tanks. The first one (fastTank) is famous for its moving speed 
and shooting distance. The second one (doubTank) has two guns to shoot two bullets 
in parallel at one time. The third one (cubeTank) is made of some special secret 
material so that you have to shoot it four times to kill it. Three different opponent 
tanks each has five lives, so altogether there are 3 x 5 = 15 opponent tanks. 
You have three lives for your tank, your king will die immediately after being shot once, 
but you are allowed to shoot your king. If your three tanks are killed or the king is dead, 
then you lose the battle. If you kill all your 15 opponents, then you win the battle.

Controls described by in-game help.