5,120 Spliced Surprise Major (3 methods)

Robert D S Brown
23456   B  W  H  Methods 
23564   -     -  YY.CC.
52364         -  NNNNCNC.
63254      s  s  CYCY.NYN.
62354         s  YCYCYCY.
35264      s  -  NYNY.NCN.
5 part.

Contains 1760 Lincolnshire (N), Yorkshire; 1600 Cambridge, with 129 changes of method, all the work.