Similar in spirit, but less focused on math are 99 Lisp problems (but can be approached in Perl too), and rosettacode.

Also I solved the greplin programming challenge yesterday (in Perl 6 :-) -- nice, but only three tasks.

Perl 6 - links to (nearly) everything that is Perl 6.

In reply to Re^2: Perl Puzzles by moritz
in thread Perl Puzzles by snape

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