The popular video games Fallout 3 and Fallout: New Vegas has a computer hacking mini game.

This game requires the player to correctly guess a password from a list of same length words. Your challenge is to implement this game yourself.

The game works like the classic game of Mastermind The player has only 4 guesses and on each incorrect guess the computer will indicate how many letter positions are correct.

For example, if the password is MIND and the player guesses MEND, the game will indicate that 3 out of 4 positions are correct (M_ND). If the password is COMPUTE and the player guesses PLAYFUL, the game will report 0/7. While some of the letters match, they’re in the wrong position.

The player is presented to the player with 5 words of the same length. The length can be 4 to 15 letters. More words and letters make for a harder puzzle. The player then has 4 guesses, and on each incorrect guess indicate the number of correct positions.

Here’s an example game:

CROPPERS
MIGRAINE
FOOTNOTE
REFINERY
VAULTING
Guess (4 left)? migraine
0/8 correct
Guess (3 left)? refinery
1/8 correct 
Guess (2 left)? croppers 
8/8 correct You win!

 Your program should completely ignore case when making the position checks.

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Note this was taken and adapted from  http://www.reddit.com/r/dailyprogrammer/comments/263dp1/5212014_challenge_163_intermediate_fallouts/