1 Groups, semigroups, monoids, and computers - Joe Marshall (funcall.blogspot.com) 3 points by soegaard 170 days ago

2 100% Coverage - Joe Marshall (funcall.blogspot.com) 2 points by soegaard 199 days ago

3 A polyglot program puzzle - Joe Marshall (funcall.blogspot.com) 2 points by soegaard 138 days ago