"The main idea is: two pieces can be on the same square... Pierre-Françoys says he wishes that more than two pieces could share a square... The name “Pauli Ches

"The main idea is: two pieces can be on the same square... Pierre-Françoys says he wishes that more than two pieces could share a square... The name “Pauli Chess”, is inspired by the Pauli exclusion principle, which says that no more than two electrons can occupy the same atomic orbital." Pierre-Françoys' variant would be Bose chess, I suppose?