Siamese Mah Jongg is American mah jongg for two people, with each player running two hands at once. You sit facing your opponent, take two racks instead of one, and the game is only won when you have completed both of your hands. It is played from a single American set, and there is no Charleston.
The format is a named, published variant rather than a folk rule. It was devised by Gladys Grad in 2015 – improvised, by her own account, on an April cruise when a passenger wanted a game and there was no table to join – and the rules for it and its multi-player sibling are set out in The Official Siamese Mah Jongg Rulebook by Grad and Tina Gottesman.
Why the game exists
American mah jongg is stubbornly a four-player game. Its hands are read off the annual card published by the National Mah Jongg League, reissued every year with a fresh list of winning hands, as Wikipedia’s entry on American mahjong records – and a card built for four hands does not shrink gracefully to two.
Siamese solves that by refusing to shrink it at all. Rather than thinning the game down for two players, it doubles each player up, so the same volume of tiles stays in motion and the card still has four hands to feed.
Setting up a Siamese game
One American set is all you need. That set runs to 152 tiles, eight of them jokers, and every one of them goes into play.
Getting the tiles into play
There is no Charleston, which is one reason a Siamese game starts so much faster than a standard American one. How the tiles themselves are put into play is the part to settle out loud before you start: a built wall and a shuffled face-down pool are both in circulation, and the rulebook is the place to check which one your table intends to use rather than deciding it mid-hand.
Two racks, one player
Each player sets up two racks side by side and treats the tiles across both as a single supply. Anything still concealed in your racks, jokers included, can be shifted from one hand to the other, which is the mechanical heart of the variant: you are not playing two separate games, you are allocating one pool of tiles between two targets.
Winning takes both hands
A common misreading of Siamese is that both hands have to land at the same moment. They do not. The hands are declared one after the other: you declare the first Mah Jongg, and then continue with whatever remains, trying to build the second hand out of it.
Scoring is where the fine print lives, and it has been revised over the years, so take the values from the current official rulebook rather than from any summary, including this one. That is not evasion – it is the same advice that applies to the National Mah Jongg League card itself, which is reissued annually and is the only authority on what a hand is worth in the American game.
How it compares to the games either side of it
| Element | Standard American mah jongg | Siamese Mah Jongg | Royale Siamese |
|---|---|---|---|
| Players | Four | Two | Three or four |
| Tile sets needed | One | One | Two |
| Racks per player | One | Two | Two |
| Hands per player | One | Two | Two |
| Charleston | Yes | No | No |
| Game is won by | Completing your hand | Completing both of your hands | Completing both of your hands |
Royale Siamese, for three or four
The version that seats more than two people is a different rule set with its own name. Royale Siamese Mah Jongg takes three or four players, still gives every player two racks and two hands, and needs two tile sets to supply them.
Everything else is recognisably Siamese: no Charleston, two racks each, and a game that is won by completing both of your hands rather than one. If you have heard Siamese described as a four-player game, Royale is almost certainly what was meant.
What playing two hands actually feels like
The skill Siamese tests is triage. Two hands off one card will always develop at different speeds, and the player who keeps feeding both equally usually finishes neither, so the practical move is to commit to whichever hand the tiles are favouring and let the other one become a reservoir of spare parts for it.
Jokers are the sharpest version of that decision. A joker parked in a hand you are quietly abandoning is a wasted tile, and because you may move it across, holding it there is a choice you are making every turn rather than a situation you are stuck with.
Defence changes shape too. With one opponent instead of three, the discard record is short, clean and enormously informative – the same close-reading habit covered in our guide to reading opponents at the mahjong table, applied to a single person who is also juggling two hands and will tell you which one they have chosen long before they say so.
Agree these before you start
- Which card. Both players work from the same National Mah Jongg League card, so make sure it is the current year’s and that you each have a copy in front of you.
- Wall or pool. Decide whether you are building a wall or drawing from a shuffled face-down pool, and settle it before the first tile is taken.
- Naming the hand. Settle whether a claimed discard has to be committed to a nominated rack before you pick it up, or can be placed once you have it in hand.
- Joker movement. Confirm how concealed jokers may move between your two racks, and how exposed ones are handled.
- Ending on empty. Agree what happens if the tiles run out with one Mah Jongg declared and one hand unfinished, so nobody is negotiating it at the time.
- Pace. Two hands invites long deliberation. A soft turn limit keeps a session to an evening.
Kit, space and hiring in Sydney
Siamese is one of the cheapest variants to try, because the equipment question is answered by the set you already own. One American set, four racks and a current card is the entire list, and Royale is the only version that pushes you to a second set.
The honest caveat for anyone browsing our catalogue: the Size 40 Green Chinese 144-tile set we hire is not an American set. It has no jokers and comes without racks, so it will not run Siamese as written – it will run the standard four-player Chinese game very well, and if you are working from a Chinese or Western rule set our summary of the standard Western mahjong rules is the better starting point.
What we can solve is the furniture. A proper mahjong table gives two players room for four racks and the loose tiles without anything sliding off the edge, and tables, stools and tile sets go out across Greater Sydney or can be collected from Brodie Spark Drive in Wolli Creek. Table hire starts at A$40 for a weekday sitting and table-and-tile packages at A$50 – current hire rates and delivery are listed in full, and cancelling more than 48 hours ahead is a full refund.
If two-handed play is the itch rather than this particular variant, Siamese is one option among several – our roundup of rarely played mahjong variations covers the other directions the game gets bent in.
Playing it as a household game
Siamese suits the same slot a two-handed card game does: an hour after dinner, a rainy afternoon, a couple who both like the game and cannot always find four people. It travels well for the same reason – one set, four racks and a card fit in a tote bag, and the table it needs is smaller than the four-player game demands.
Two habits make it pleasanter. Keep your two racks visibly separated, because it is easy to lose track of which tiles you have mentally assigned to which hand when they are shoulder to shoulder. And keep the discards in tidy rows rather than a heap: with only one opponent, the discard record is the whole information game, and both players benefit from being able to read it without leaning across the table.
Siamese Mah Jongg, answered
How many players does Siamese Mah Jongg need?
Two. Siamese Mah Jongg was designed as a two-player game, which is the whole reason it exists – it gives a pair a real game of American mah jongg without hunting for two more people. Three and four players are handled by the separate Royale Siamese Mah Jongg rules, which use two tile sets instead of one.
Do you need two mahjong sets to play Siamese?
No. Standard two-player Siamese uses one American set, and each player takes two racks from it. Two sets are needed only for Royale Siamese, the three- and four-handed version.
Do you have to complete both hands to win?
To win the game, yes. But the hands are finished one at a time rather than together: you declare the first Mah Jongg, then carry on with what is left in your other rack.
Is there a Charleston in Siamese Mah Jongg?
No. The Charleston is dropped entirely, which is one reason the game sets up so quickly.
Can you play Siamese with a Chinese or Japanese set?
Not as written. Siamese is built on the American game, so it depends on jokers, racks and the annual National Mah Jongg League card of legal hands, none of which a 144-tile Chinese set provides. A Chinese set will happily run the standard four-player game instead.
Is Siamese a good starting point for a beginner?
It is a better second step than a first one. Managing two hands rewards players who already recognise the card’s hand families at a glance, so learn the standard American game first, then bring Siamese out when you want a game for two.
Where do the authoritative rules live?
In The Official Siamese Mah Jongg Rulebook for the variant itself, and on the current National Mah Jongg League card for the hands you are trying to build. Between them they settle every question a summary like this one can only point at.
Looking for a set of your own? See our mahjong merchandise, or rent a full setup to try one first.
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