Why does the NMJL card have a 13579 section?

The 13579 section is the odd-number sister of the 2468 section (even numbers). Splitting hands by parity gives players two distinct ways to build a hand around a restricted tile pool, each with its own strategic rhythm.

How do 13579 hands differ from 2468 hands?

13579 hands use only odd numbers (1, 3, 5, 7, 9) while 2468 hands use only even numbers (2, 4, 6, 8). The strategy is similar, but the tile pools never overlap, so a player committed to 13579 will pass every even number, and vice versa.

Where can I see this year's 13579 hands?

The specific 13579 patterns each year are NMJL's protected content. To see them, you need an official NMJL card, available from the National Mah Jongg League for $14 (or $15 for large print).

13579 hands in American Mahjong

Q: What are 13579 hands in mahjong?

13579 hands are American Mahjong hands built only from odd-numbered tiles, 1, 3, 5, 7, and 9. The category is named for the digits themselves. The exact arrangement of pungs, kongs, pairs, and singles changes year to year on the NMJL card.

The 13579 section on the NMJL card collects hands built only from the odd numbers 1, 3, 5, 7, and 9. If most of your starting tiles are odd, this is the first section to check.

The category is named for the digits themselves. The hands in this section use only those five numbers (no 2s, 4s, 6s, or 8s), but the way they're arranged into pungs (three of a kind), kongs (four of a kind), pairs, and singles changes year to year.

What 13579 hands look for

Odd numbers, organized into specific patterns. Some hands ask for runs of consecutive odd numbers (1-3-5-7, for example, jumping by twos). Some ask for sets of identical odd tiles. Some require all the odds to come from one suit; others spread them across two or three. The card defines the layout for the year.

Because there are only five odd numbers per suit, the pool of useful tiles is smaller than for a Year hand or a Like Numbers hand. That changes the strategy.

Why the category exists

Even and odd hands are sister categories on every NMJL card. The 2468 section (even numbers) is the mirror image. Splitting hands by parity gives you two ways to play around a restricted tile pool, each with its own feel.

How they play in practice

Drawing odd numbers early makes this category attractive. If three or four of your starting tiles are odd numbers, particularly across multiple suits, the 13579 section is worth a careful look.

Jokers do real work here. Because the tile pool is restricted, you'll find yourself reaching for Jokers more often than you might in a Consecutive Run hand. Plan for it. Don't pass your Jokers in the Charleston unless you've decided you're switching to a different category entirely.

The Charleston tells a story. If a player keeps passing 2s, 4s, 6s, and 8s, they may be heading for a 13579 hand. Conversely, if they're passing 1s, 3s, 5s, 7s, and 9s, they're likely working on the even side.

Be aware of patterns you keep. Because fewer tiles are valid (5 numbers per suit instead of 9), opponents who notice you keeping 1s and 7s have a clearer read on what you might be after. That's not a reason to avoid the category. It's just worth knowing.

Where to find them on the card

The 13579 section is its own block, usually toward the middle of the card. Look for the section header that names the category. The actual hand patterns for the current year are NMJL's protected content, so you'll need an official card to see them. Order one from the National Mah Jongg League for $14, and our card-reading guide walks through how to read the notation.

When this category fits

13579 is a good fit when:

Most of your starting tiles are odd numbers.
You drew a few Jokers and feel comfortable using them.
You enjoy the focus of working with a restricted tile set.

You might pick a different category when:

Your starting tiles are mostly even (2, 4, 6, 8). Try 2468 hands instead, they live in their own section on the card.
You only drew zero or one Jokers. The narrow tile pool can make 13579 harder to complete without Joker support.

Try a 13579 against bots

You can play American Mahjong free against computer opponents and target a 13579 hand at your own pace. The bots will let you take time to think and prompt you when you can claim a tile. After a couple of games, the rhythm of working with only odd numbers starts to feel familiar.