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=head2 rules()

Returns the rules (combinations, blacks, whites played so far) y a
reference to array

=head2 matches( $string ) 

Returns a hash with the number of matches, and whether it matches
every rule with the number of blacks and whites it obtains with each
of them

=head2 fitness( $individual )

Computes fitness summing the number of correct black and whites plus
the number of rules the combination meets times the length

=head2 fitness_orig( $individual )

Fitness proposed in the Applied and Soft Computing paper, difference
between the number of blacks/whites obtained by rules against the
secret code and by the combination against the combination in the
rule. 

=head1 SEE ALSO

Other solvers: L<Algorithm::MasterMind::Sequential> and
L<Algorithm::MasterMind::Random>. Don't work as well, really.


=head1 AUTHOR

JJ Merelo  C<< <jj@merelo.net> >>


=head1 LICENCE AND COPYRIGHT

Copyright (c) 2009, JJ Merelo C<< <jj@merelo.net> >>. All rights reserved.

This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself. See L<perlartistic>.


=head1 DISCLAIMER OF WARRANTY

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