Here's a shorter way to count the guesses in the right place: 
my $tmp = $solution ^ $guess;
my $right_place = $tmp =~ tr/\0//;

[download]
(In 5.6, I believe one can even skip the temporary variable.)

In reply to Re: Re: Re: Need help with a Mastermind game by chipmunk
in thread Need help with a Mastermind game by PsionicMan

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