sudokuist

Etymology tree
Japanese 数(すう)字(じ) (sūji)
Japanese は (wa)
Japanese 独(どく)身(しん) (dokushin)
Japanese に (ni)
Japanese 限(かぎ)る (kagiru)
Japanese 数独 (sūdoku)bor.
English sudoku
Proto-Indo-European *-id-
Proto-Indo-European *-yéti
Proto-Indo-European *-idyéti
Proto-Hellenic *-íďďō
Ancient Greek -ῐ́ζω (-ĭ́zō)
Proto-Hellenic *-tās
Ancient Greek -τής (-tḗs)
Ancient Greek -ῐστής (-ĭstḗs)bor.
Latin -istader.
Old French -istebor.
Middle English -ist
English -ist
English sudokuist
From sudoku + -ist.