Koi-Koi

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A typical setup of hanafuda for the game of Koi-Koi, on top a red zabuton with a peony pattern.
A typical setup with hanafuda for playing Koi-Koi.

Koi-Koi (Japanese: こいこい) is a popular card game in Japan played with hanafuda.[1] The phrase "koi-koi” roughly means "come on" in Japanese[2] which is said when the player wants to continue the round.

The object of the game is to form special card combinations (or sets) called yaku (Japanese: ) from cards accumulated in a point pile. Players can gain cards in their point piles by matching cards in their hands, or drawn from the draw pile, with cards on the table. Once a yaku has been made, a player can stop to cash in points, or keep going (referred to as "koi-koi", hence the name of the game) to form additional yaku for more points. The point values assigned to individual cards have no effect on the score, but they are helpful to judge their value in forming yaku.

Deal[edit]

An initial dealer (called the oya (Japanese: ) or "parent"), is decided upon when the game starts. This can be done with any method (rock-paper-scissors, dice roll) the players agree upon. A hanafuda-specific method involves random card draw: each player draws a single card; the player who draws a card from the earliest month is the oya. If both players draw a card from the same month, the player with the higher value card becomes the oya. The other player is called the ko (Japanese: ).[3]

To deal, the oya deals eight cards to the ko (face down), then to the table (face up), and then to themselves (face down), though this is normally done with two or four cards at a time. The rest of the cards are set aside as a draw pile, and then the game begins starting with the oya.

Play[edit]

On a player's turn, they may match by suit (that is, by month/flower) any one card in their hand with one on the table and take both into their point pile. If they cannot match a card from their hand, they must discard a card face up to the table. After matching or discarding a card, they then draw one card from the draw pile and place it face up on the playing area. If this card matches any card now on the table, they must match that card and take both for their point pile; otherwise, it becomes part of the table. If the played card matches two cards on the table, the player gets the choice as to which card to match and therefore keep in addition to the played card. In the event that three cards of a same suit are on the table and a player plays the fourth one, they collect all cards of that suit and take them into their point pile.

After a player's turn ends, if they made at least one yaku that turn, that player must then make a choice. They may end the hand and add the value of their yaku to their point total, or they can choose to continue playing (calling "koi-koi") in an effort to gain more points. In some versions, a player may only call koi-koi once per hand; in others, a player may call koi-koi on multiple yaku-forming turns. Calling koi-koi leaves the player vulnerable, as if their opponent is able to form a yaku before the caller forms another, the opponent gains double their score and the caller earns nothing. If a player has yaku totaling 7 or more points when the hand ends, that player earns twice that value. If a player hits 7 or more points and their opponent had called koi-koi, they get both doubling bonuses for a total of four times their score.

The player who won the last hand becomes the new oya, and a new hand is dealt. Should both players ever run out of cards to play without having formed a yaku on the last play, the oya gains one point, and the next hand begins with the same oya (this is called Oya-Ken, meaning "Dealer's Privilege"). Generally, play continues for 12 hands, with each hand representing a month in the year, but the players can decide to play for a different number of rounds before the game starts.

Some groups, when gambling, will require the player whose score was multiplied to pay a proportionately larger amount of the winnings (i.e. a player who continued play twice would pay twice as much as the other player, since their score would have been doubled).

Special cards[edit]

Hanafuda September Tane.svg Sake is unique in that, though technically classified as a 10-point card, it counts as both a 10-point card and a 1-point card at the same time. Some rules allow the Sake to count as a 10-point card and two 1-point cards at the same time.

Additionally, November's 1-point card, Hanafuda November Kasu.svg Lightning, is sometimes used as a wild card that can match any card in some games.

Yaku listing[edit]

If certain combinations of cards are won during play, extra points apply. Sometimes, players will be paired across the table when this rule is used (in multi-player Koi-Koi) to increase the chance of getting combos. Below is a list of special combinations with example point values. Different rulesets give different point values and some do not include the tsukimi-zake and hanami-zake yaku.

Some yaku can be considered extensions of others. For example, one may qualify for both Akatan and Tanzaku by having the Akatan combination as well as two additional five-point cards. In these cases, players are awarded points for both Akatan and Tanzaku (unless players decide only the single highest-scoring yaku counts).

Points Combo Name Card Combo
15 Hanafuda January Hikari.svg Hanafuda March Hikari.svg Hanafuda August Hikari.svg Hanafuda November Hikari.svg Hanafuda December Hikari.svg

Gokō (五光) "Five Hikari"

All five 20-point cards.
8 Hanafuda January Hikari.svg Hanafuda March Hikari.svg Hanafuda August Hikari.svg Hanafuda December Hikari.svg

Shikō (四光) "Four Hikari"

All 20-point cards except Ono no Michikaze (Willow's 20-point card).
7 Hanafuda January Hikari.svg Hanafuda March Hikari.svg Hanafuda August Hikari.svg Hanafuda November Hikari.svg

Ame-Shikō (雨四光) "Rainy Four Hikari"

Any four 20-point cards, one of which is Ono no Michikaze (Willow's 20-point card).
6 Hanafuda January Hikari.svg Hanafuda March Hikari.svg Hanafuda August Hikari.svg

Sankō (三光) "Three Hikari"

Any three 20-point cards excluding Ono no Michikaze (Willow's 20-point card).
5 Hanafuda August Hikari.svg Hanafuda September Tane.svg

Tsukimi-zake (月見酒) "Moon Viewing"

Moon and Sake (Susuki's 20-point card and Chrysanthemum's 10-point card). Cumulative with Hanami-zake.
5 Hanafuda March Hikari.svg Hanafuda September Tane.svg

Hanami-zake (花見酒) "Cherry Blossom Viewing"

Curtain and Sake (Sakura's 20-point card and Chrysanthemum's 10-point card). Cumulative with Tsukimi-zake.
5 Hanafuda July Tane.svg Hanafuda October Tane.svg Hanafuda June Tane.svg

Inoshikachō (猪鹿蝶) "Boar, Deer, Butterflies"

Boar, Deer, and Butterflies (the 10-point cards from Bush Clover, Maple, and Peony, respectively).
1 Hanafuda November Tane.svg Hanafuda May Tane.svg Hanafuda February Tane.svg Hanafuda August Tane.svg Hanafuda September Tane.svg

Tane (タネ)

Any five 10-point cards, i.e. any combination of animal cards, Eight-plank bridge (Iris), and Sake (Chrysanthemum). One additional point is awarded for each additional 10-point card.
10 Hanafuda January Tanzaku.svg Hanafuda February Tanzaku.svg Hanafuda March Tanzaku.svg Hanafuda June Tanzaku.svg Hanafuda September Tanzaku.svg Hanafuda October Tanzaku.svg

Akatan, Aotan no Chōfuku (赤短・青短の重複) “Red Poetry and Blue Tanzaku"

All 3 Red Poetry Tanzaku cards and all 3 Blue Tanzaku cards, i.e. the combination of Aka-tan and Ao-tan.
5 Hanafuda January Tanzaku.svg Hanafuda February Tanzaku.svg Hanafuda March Tanzaku.svg

Akatan (赤短) "Red Poetry Tanzaku"

All 3 Red Poetry Tanzaku cards (the 5-point cards from Pine, Ume, and Sakura).
5 Hanafuda June Tanzaku.svg Hanafuda September Tanzaku.svg Hanafuda October Tanzaku.svg

Aotan (青短) "Blue Tanzaku"

All 3 Blue Tanzaku cards (the 5-point cards from Peony, Chrysanthemum, and Maple).
1 Hanafuda February Tanzaku.svg Hanafuda April Tanzaku.svg Hanafuda May Tanzaku.svg Hanafuda September Tanzaku.svg Hanafuda July Tanzaku.svg

Tanzaku (短冊) "Poetry Tanzaku"

Any five 5-point cards, all of which are Tanzaku cards. One additional point is awarded for each additional 5-point card.
4 Hanafuda April Tane.svg Hanafuda April Tanzaku.svg Hanafuda April Kasu 1.svg Hanafuda April Kasu 2.svg

Tsukifuda (月札) "Monthly Cards"

All four cards representing the same month.
1 Hanafuda January Kasu 2.svg Hanafuda February Kasu 1.svg Hanafuda April Kasu 1.svg Hanafuda May Kasu 2.svg Hanafuda June Kasu 1.svg

Hanafuda August Kasu 2.svg Hanafuda September Kasu 1.svg Hanafuda September Kasu 2.svg Hanafuda November Kasu.svg Hanafuda December Kasu 3.svg

Kasu (カス)

Any ten 1-point cards, all of which are normal cards, also known as Chaff cards. One additional point is awarded for each additional 1-point card.

Instant wins and redeals[edit]

There are two special yaku such that, if a player is dealt them before play begins, they are immediately awarded points. Play then ends before it starts, and the game continues to the next hand. If either of these combinations are dealt to the table, however, the hand is declared void and a redeal occurs. These two combinations are as follows.

Points Combo Name Card Combo
6 Teshi (手四) Being dealt four cards of the same suit.
6 Kuttsuki (くっつき) Being dealt four pairs of cards with matching suits.

In popular culture[edit]

Koi-Koi plays a major role in the 2009 anime film Summer Wars. It is also one of the featured games in Clubhouse Games,[4] as well as its sequel Clubhouse Games: 51 Worldwide Classics.[5] Other video games which include Koi-Koi include the Yakuza series,[6] Way of the Samurai 4,[7] and Sakura Wars.[8]

See also[edit]

References[edit]

  1. ^ "Game Boy". Metropolis Japan. 2010-01-20. Retrieved 2020-07-13.
  2. ^ "How to Play: Koi-Koi". Boardgamegeek. Retrieved 2020-09-24.
  3. ^ "歴史・遊びかた|花札・株札|任天堂" [History / How to play - Hanafuda / Kabufuda - Nintendo]. 任天堂ホームページ (in Japanese). Archived from the original on 2020-07-08. Retrieved 2020-07-13.
  4. ^ Provo, Frank (2006-10-13). "Clubhouse Games Review". Gamespot. Retrieved 2020-09-23.
  5. ^ Vincent, Brittany (2020-07-10). "Clubhouse Games: 51 Worldwide Classics offers a perfectly punchy set of minigames". CNN Underscored. Retrieved 2020-07-13.
  6. ^ Bowen, Thomas (2020-11-09). "Every Mini Game In Yakuza: Like A Dragon".
  7. ^ CamelAnon, CamelAnon (2020-09-24). "Gambler-den game". Gamefaqs. Retrieved 2020-09-24.
  8. ^ Flores, Sky (2020-07-22). "How to Unlock Koi-Koi Wars Characters in Sakura Wars".

External links[edit]