Rule of the game

Two Players play at this Game, which enables Children to practice additions.
Each Child selects a color. The first Player throws both dice, adds the numbers they show and  eliminate the corresponding  Nasty of his color .
examples: first player  plays the reds ; he adds 4+5=9 and eliminates the red snake. Then it is the turn of the second Player to play against the blue Nasties. The  first who has eliminated all his Nasties is the winner. If the  total corresponds to an already eliminated Nasty, the Player does not cast the dice a second time.