func (self *phase) Winner(s dip.Validator) *dip.Nation {
sizes := map[dip.Nation]int{}
for _, nat := range s.SupplyCenters() {
sizes[nat]++
}
var biggest *dip.Nation
var bigSize int
for nat, size := range sizes {
if biggest == nil || size > bigSize {
natCpy := nat
biggest = &natCpy
bigSize = size
}
}
if bigSize > 17 {
return biggest
}
return nil
}
