LRnumber(...,Strategy=>S)
Determines which method to compute the number of solutions is created.
"Schubert2" uses the SchubertRings command from the package Schubert2 [default]
"phc" uses LRrule, the implementation of the geometric Littlewood-Richardson rule in PHCPack. This also requires the string parsing capabilities of Macaulay2 version 1.17 or later