Thirteen Orphans (十三幺)

What is Thirteen Orphans?

Thirteen Orphans (十三幺), pronounced sap saam yiu, is a 13-faan limit hand in Hong Kong Mahjong consisting of one of each terminal tile (1 and 9 in all three suits), one of each wind (East, South, West, North), one of each dragon (Red, Green, White), plus a pair of any one of those thirteen tiles. It is the most globally famous mahjong pattern and pays the 384-base-unit limit cap.

How to score Thirteen Orphans

The hand requires exactly these 13 unique tile types as singletons, plus one duplicate to form the pair:

• 1 and 9 of Bamboos (一索 and 九索)
• 1 and 9 of Characters (一萬 and 九萬)
• 1 and 9 of Circles (一筒 and 九筒)
• East, South, West, North winds (東, 南, 西, 北)
• Red, Green, White dragons (中, 發, 白)

That’s 13 distinct tiles. The 14th tile (the pair) can match any one of those 13. There are no melds in the traditional four-meld-plus-pair sense — the entire hand is “1 + 1 + 1 + … + 2”.

Example hand

Faan value: 13 (limit hand)

Thirteen Orphans is worth 13 faan, paying the 384-base-unit limit cap. It is structurally distinct from every other HK Mahjong hand because it uses no melds — the rule that “every winning hand is four melds plus a pair” has Thirteen Orphans as a deliberate exception.

Common combinations

Thirteen Orphans is a limit hand and does not stack with most other patterns. It cannot coexist with any structural pattern (All Triplets, All Sequences, Mixed Flush, Full Flush) because it has no melds. The patterns that can apply are:

• Self-Pick (自摸) — affects payment direction (all losers pay full) but not the cap.
• Concealed Hand (門前清) — applies almost by definition, since claiming a discard for a single tile only happens on the winning tile itself.
• Blessing of Heaven (天胡) — extremely rare; the dealer wins on opening hand with a complete Thirteen Orphans.

Strategic note

Thirteen Orphans is the hand most often attempted as a deliberate “swing for the fences” play. Because the 13 required tiles are fixed and distinct, a player can identify the pattern as viable within the first few draws — they need exactly the terminals, winds, and dragons in their starting 13 tiles, with at most a few off-pattern tiles to discard. Most players either commit to Thirteen Orphans by the second or third turn, or they don’t attempt it at all. Mid-round pivots into the pattern almost never succeed.