Source: Saito, Y. (2017). A Study on the Effectiveness of Kanji Instruction for Japanese Language Learners. Journal of Japanese Language Teaching, 33, 1-18.
A significant chunk of the N1 list is comprised of Kanji used in bureaucracy and government documents. jlpt n1 kanji list
Using the mecab morphological analyzer with unidic-lite , we extracted unique kanji, normalized variant forms (e.g., 彿→仏), and computed frequency rank (F) and range (R = number of documents). We defined “N1-exclusive” as kanji with F < 10 in N2-level corpora (from Minna no Nihongo Chukyu II and New Authentic Japanese ). Source: Saito, Y
Gentle / compromise (e.g., 妥協 - dakyo / compromise). we extracted unique kanji