Courtenay, Edward H
Chess Journal, 1870
#2
5 + 1
1829 | The Theory of Pawn Promotion | 1912 |
5454 | Near Snap | 2013 |
This anticipates 175008(1901), 68438(1927), 10875(1969)
This is a version of 4496
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).