I'm pretty sure this quiz accepted NorthBorneo previously but now it only takes NorthKalimantan. It still accepts Borneo for all the others but no longer for North? or am I imagining...
I just checked the Largest Indonesian Islands quiz and interestingly I typed in Kalimantan for the first time ever and it switched to Borneo. An excellent job of training lazy people like me to get the difference between an island name and a region.
Perfect!
Also, "Sumatera Barat", "Sumatera Selatan" and "Kalimantan Tengah" are not properly accepted.
Sumatera Utara for North Sumatra, not Riau
Sumatera Barat for West Sumatra
Sumatera Selatan for South Sumatra
Kalimantan Tengah for Central Kalimantan