really nice HOWEVER
its quite impossible to solve things like x(squared) - x - 6 = 0 ; not only because time does not permit but also because its impossible , it equals square route of x(squared) -x = square route of -6
you cant find the square route of a negative ; perhaps i just read the problem wrong (which i hope i did).
you can still destroy green tanks by shooting at them when they are stuck between a wall and another tank (you'll know when it happens cause they will not be able to move, only to turn around ; o and i dont know if it works with green tank on green tank but it does for pink and orange i think). some times they will blow up on their own and others will blow up when u shoot at them.
really great game