use v6;

sub print_board ( @b ) {
    my $count = 0;
    for (@b) -> $x {
        print "$x \t";
        print "\n" unless ++count % 3;
    }
}

my @g = ('.') xx 9;

print_board( @g );

my %player = ('X','Player 1','O','Player 2');

my %entered;
my $choice = any (1 .. 9);

my $player = 'X';
while (@g ==> grep { $_ eq '.' })
{
    INPUT: {
        say %player{$player} ," Enter the Position [1-9]:";
        my $in = =$IN;

        unless ($in == $choice) {
            say "Please enter a value within 1-9";  
            redo INPUT;  
        }

        my $idx = $in - 1;
        if (%entered.exists($idx)) {
            say "Element already entered at $in";
            redo INPUT;
        }

        @g[$idx] = $player;
        %entered{$idx} ++;
    }

    for  (
        [ 0, 1, 2 ], [ 3, 4, 5 ], [ 6, 7, 8 ],
        [ 0, 3, 6 ], [ 1, 4, 7 ], [ 2, 5, 8 ],
        [ 0, 4, 8 ], [ 2, 4, 6 ],
      ) -> @c
    {
        if ( @g[@c[0]] eq @g[@c[1]] eq @g[@c[2]] )
            say "  %player{$player} Wins \n";
            exit;
        }
    }

    print_board( @g );
    $player = $player eq 'X' ?? 'O' :: 'X';
}