Your bug is that you are initializing your arrays with: 
my @polea = "";
my @poleb = "";
my @polec = "";

[download]
which means that they have invisible 0-width entries on top of each stack. Get rid of those and your bug goes away.

Incidentally if you change the way you print slightly, you can turn warnings back on: 

for (my $len = 0 ;$len <= $numdisks; $len++) {
    print join "\t\t\t", map {$_->[$len] || ""} \@polea, \@poleb, \@po
+lec;
    print "\n";
}

[download]
(You have to change this in two locations.)

In reply to Re: A quandry in Towers of Hanoi by tilly
in thread A quandry in Towers of Hanoi by pmonk4ever

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