Kalev's cardgames

Contents:
72 cards numbered with 1-20 + 2 bonus cards
40 candies

Players must collect candies and for every candy they have to give one or several cards, so that the number of the card or the sum or subtraction of cards numbers gives you the sequential number of the candy.
(For example for the first candy player may play card "1" or cards "8"-"7"=1 or cards "4"+"13"-"10"-"6"=1)
In his turn player may do as many moves as many cards he has.
There are different gamevariants with and without candies.