News for hackers. Stuff that matters.

A comment on The 17x17 problem solved. Parent comment

Re:The 17x17 problem solved by jbri on Sunday February 12, 2012 @07:54PM (#3583654)
It's also possible to mathematically prove that certain grids are not 4-colorable.
[ Parent | on HN ]
Re:The 17x17 problem solved by endtime on Sunday February 12, 2012 @08:46PM (#3583807)
Ah, thank you. And also, duh.
[ Parent | on HN ]