Practical tutorial
Study common yaku, local rules, blocking opponents' yaku, remaining cards, and Koi-Koi decisions.
Practical tutorial
Choose a step in the inline tutorial below to review the flow.
Learning
Introduction to Monthly Cards, Yaku, and Koi-Koi
Learn the 48-card, 12-month deck, month matching, and yaku such as Goko, Inoshikacho, and the cup-based combinations
Match cards in your hand with table cards from the same month, capture them, and compete for points by making yaku from the cards you collect.
- Article Build Yaku and Outscore the Opponent
- Move sequence Match and Capture Cards from the Same Month
- Move sequence Build Yaku with Captured Cards
- Multiple choice Choose Whether to Stop or Call Koi-Koi
- Multiple choice The Player with the Most Points Wins
Combine yaku values, local rules, and remaining-card reads to learn when to continue with Koi-Koi.
- Article Decide on Koi-Koi by Weighing Scoring Potential Against Risk
- Article Understand Yaku and How They Combine
- Article Fix the local rules before the match starts
- Article Fast Completion, Blocking Yaku, and Key-Card Priorities
- Article Read the Remaining Cards to Decide on Koi-Koi
Koi-Koi Basics
Choose a step in the inline tutorial below to review the flow.
Capturing cards and Koi-Koi decisions
Open it only when you need to check something.
Matching months and making yaku
Standard human-readable notation
play_card:06-peony-ribbon
Record the 48 cards with stable IDs, and card play, table-card selection, koi-koi, and ending the round as separate actions.
Month
Match cards from the same month When a card in your hand has the same month as a card on the table, you can capture that card.Draw
Turn over one card from the deck After playing a card from your hand, you can also use the card drawn from the deck to capture a table card.Hand
Card combinations Collect brights, ribbons, animals, chaff, and other groups to make yaku.Koi-Koi
Continue or score After making a yaku, choose whether to continue for a higher score or end the round and score it.Capture cards
- If a card of the same month is on the table, play a card from your hand and capture it.
- If no card of the same month is on the table, place the card from your hand on the table.
- A card drawn from the deck can also capture a table card of the same month.
Yaku and Koi-Koi
- You can score after making a yaku. Declare “Koi-Koi” if you choose to continue.
- If your opponent makes a yaku first after you call Koi-Koi, their score may be increased.
Next step
Choose after the tutorialOnce you are comfortable moving pieces, review anything that was unclear or practice your decisions with a short problem.