One player, the CODE MAKER, writes on his beer coaster a 4-digit code (from 8 symbols) - symbols can be used several times. The CODE BREAKER then tries to crack the code. For this reason he notes a code in the first line. The CODE MAKER subsequently marks how many symbols (right column) and positions (left column) are correct. After that the CODE BREAKER sets a new code in the next line. He is now occupied to crack the secret code with brains and logic in a maximum of 10 attempts. After the game the beer coaster is turned around and the loser will be looking for revenge.
Tip: Drink a cold beer while playing games. Cheers!