also: すじろく
noun
scoring combination of sixteen 1-point cards
In hanafuda, a specific yaku (scoring combination) consisting of exactly sixteen 1-point cards. Compare with 出来役.
See also: 出来役
花札で素十六を達成するのは難しい。
Achieving sujūroku in hanafuda is difficult.
出来役 is a broader term for any scoring combination in hanafuda, while 素十六 refers specifically to the combination of sixteen 1-point cards.
Compound of 素 (su, 'plain' or 'mere') and 十六 (jūroku, 'sixteen'), referring to the sixteen plain (1-point) cards that form this combination.