Break the hidden code

The winner is the first player to break the complete hidden code. At any time during the game, of any player thinks he has broken the hidden code, he must shout "Master Mind" and all play must stop. He must then place code pegs in the answer row of 5 holes which is seperate from the other 4 rows on his decoding baord,If his answer is incorrect, he must take no further part in the game but must give correct information when it is his turn. 

A game of cunning and logic for 4 players