BDS
Europa Rochade, 2003
#5
KANGAROOs a1; b8
1.Ra2! () 1...b4 2.a4+ Ka6 3.a5+ Ka7 4.a6+ Ka8 5.a7# 1...Ka6 2.a4 (3.axb5#) b4 3.a5+ Ka7 4.a6+ Ka8 5.a7#
Composed for a Kangaroo theme tourney where it was bounced by the judge, presumably for the flight-taking key. The second variation, so close an echo of the first, is unfortunate, but the flight on a6 is needed for the idea to function.
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).