Question juridique clé
Whether the real-estate gains from the chain transaction were taxable only in the canton where the property was located or instead as business income in Zug.
Solution extraite
The gains remained economically attributable to a real-estate transfer and were taxable in the property canton; no intercantonal double taxation was shown against Zurich.
Motifs extraits
The court upheld its earlier qualification of the transaction as an economic handover (chain transaction). Such gains may be taxed by the situs canton. The new argument that the seller was never civil-law owner did not change this classification.