even and odd (dice)
Refers to the even/odd outcome of dice, often used in the context of the gambling game.
In chō-han, chō means even and han means odd.
chō-han (dice gambling game)
A traditional Japanese gambling game where players bet on whether the sum of two dice is even (丁) or odd (半).
In the Edo period, chō-han was a popular gambling game among commoners.