Maaddada xisaabta ee aragtida garaafka, Tutte 12-cage ama Benson graph [1] waa garaafka 3-joogto ah oo leh 126 qaybood iyo 189 geesood oo lagu magacaabo W. Tutte [2] Tutte 12-kursi waa mid gaar ah (3-12) -cage (taxanaha A052453 ee OEIS). Waxaa la ogaaday CT Benson 1966-kii. Waxa ay leedahay lambar nambar 2 (bipartite), jaangoynta jilicsanaanta 3, guntiga 12 (sida 12-kaamaji) iyo dhexroorka 6. Lambarka taleefanku waa 170 iyo lambarkan isgoyska ugu yar miisaanka culus ee la isku daro. 5]