The text is giving what Bishops own, i.e. they own only 44.4% of (what started out as) their own fields, 100% of (what started out as) Knight fields, and 40.7% of (what started out as) Rook fields. So the "win" criteria is apparently not quite semantically correct? Bishops win because they own more than 90% of the original number of fields they start with (although not the actual starting fields) and more than 40% of the other countries starting fields??? Kinda confusing. Or is the OP saying Bishops didn't win with the map as shown? (Which would be consistent with the win criteria given.)