Not to be confused by the Koi-Koi yaku of the same name
Ino-Shika-Chō - 猪鹿蝶 [いのしかちょう, lit. “boar-deer-butterfly”] is a luck-based gambling game played with hanafuda. One person acts as the banker, against which any number of players may bet.
Note that the name of this game may also refer to a fishing game similar to Roppyakken; for this reason, the gambling game is sometimes refered to as “Old Ino-Shika-Chō”. The name also refers to a yaku appearing in many fishing games.
The game begins with the banker shuffling the deck and cutting it into 4 approximately equal packets, which are then placed face-down on the field. Each of the other players then takes their turn betting whatever sum of money they desire on any and all of the piles of cards that they wish. Once all participants have bet, the banker flips over each of the 4 piles, revealing their bottom cards.
Each player wins or loses their bet on a given pile at a rate dependent on which card is revealed:
Once all debts have been settled, the cards are shuffled and the next game may begin.