Majority

The game field consists of 100 stones of 4 different designs. Your task is to find the design which occurs most times - the Majority - and clean the game field of all the stones. Have you guessed the Majority right? => Each Majority stone changes its design or better disappear. Have you guessed the Majority wrong? => Couple of extra stones pops up. Can you clean the game field of all the stones? Try out 10 different design sets and discover which one is the hardest for you to master.