<wib_jonas> slashlearn ponderthis//Ponder This are monthly open-ended programming puzzle challenges that some regulars enjoy: https://research.ibm.com/haifa/ponderthis/index.shtml

#!/usr/bin/perl -w
my $bin = $ENV{"HACKENV"}."/bin"; if (defined($_=shift)) { s/ *$//;  s/ +/ @ /g; exec "$bin/@", $_ . " ? welcome.sv"; } else { exec "$bin/?", "welcome.sv"; }