OFFSET
1,2
COMMENTS
A nightrider is a fairy chess piece that can move (proportionate to how a knight moves) in any direction.
LINKS
Vaclav Kotesovec, Number of ways of placing non-attacking queens, kings, bishops and knights (in English and Czech).
CROSSREFS
KEYWORD
nonn,nice,hard,more
AUTHOR
Vaclav Kotesovec, May 10 2011
EXTENSIONS
Terms a(16)-a(17) from Vaclav Kotesovec, May 14 2011
Terms a(18)-a(19) from Vaclav Kotesovec, May 28 2011
STATUS
approved
