Rubens, Nathan
The Problemist, 1966
#2
2 + 2
136 | Problem Observer | 2001 |
3713 | Snap | 2019 |
Anticipated by 189963(1913)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).