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8 votes

What manners are specific to mahjong?

I beg to disagree with User545. Mahjong is drenched in formal--even ceremonial--aspects: The sorting of the seats, the selection of the first east, the building of the wall, the breaking of the same, ...
Rara Avis's user avatar
7 votes

Mahjong exposing And discarding

By "exposing a set", I assume you mean the move when you take a just-discarded tile to complete a set you have in hand. When that happens: You declare the match ("pong" if you're ...
ConMan's user avatar
  • 11.5k
4 votes

Why is there no black dragon in Mahjong?

The simplest answer is that the "Dragon" tiles are more of a triplet, and not a pair. This is pretty clear when using one of their Chinese names 三元牌 or Three Fundamental Tiles, the name "Dragons" was ...
KMR's user avatar
  • 5,097
3 votes

Mahjong board formation and drawing rules

I used to be a member, and for a time the President, of the MSU Mah Jong club. The custom used there built the wall as a square that overlapped at the ends, not as a spiral as shown in the linked ...
David Siegel's user avatar
  • 1,197
3 votes
Accepted

Mahjong board formation and drawing rules

In theory yes, you can play with a single pile. The reason people setup the wall this way (aside from historical reasons) is because the layout suits the nature of the game. You typically play on a ...
Matthew Ban Kim's user avatar
3 votes

How can I quickly calculate the shanten number in Mahjong?

If you're eyeballing it, then you go with counting three things: the standard count from 8. (worst case scenario: 147m147p147s1234z or 13-sided kokushi) the terminal count from 13. (worst case ...
Senjooooo's user avatar
  • 121
3 votes
Accepted

Riichi Mahjong on PS4 Game "Judgement"

The yaku in the shown hand is Kuitan, not Tanyao. Tanyao (All Simples) is a standard Yaku, but it applies to closed hands, which that pictured hand is not due to the two claimed discards. There are ...
KitsuneZeta's user avatar
  • 1,759
3 votes

In Mahjong , what is the chance to get a hand that allows a player to finish on their first turn?

I wrote a program that draws a random 14-tile set from a reservoir of all possibles tiles (expect flowers and seasons, sorry): then the program checks if the hand is a mahjong. So far here are my ...
pierebean's user avatar
2 votes

Mahjong - declaring

The Rules of Mah Jong by The World Series of Mah Jong state: Change of Claim: If a player, after announcing a claim for “chi”, “pong” or “kong”, changes his mind and wishes to change his claim into ...
Forget I was ever here's user avatar
2 votes

When do you draw loose tiles in Chinese Mahjong?

From Tom Sloper's rules, there are no loose tiles: After breaking the wall, each player takes 2 stacks (4 tiles) at a time until everyone has 12 tiles, then: East takes one tile from the first and ...
porges's user avatar
  • 121
2 votes

Two player mahjong?

I don't know much about two-player mahjong, but three-player riichi mahjong is extremely popular online (about as popular as four-player mahjong, at least on some sites). It's often known by its ...
Kef Schecter's user avatar
2 votes

Two player mahjong?

We have a mahjong set and regularly play with only three people but using the same rules as the four-player game. The only difference is that it is often slightly easier for someone to win with three ...
Liz's user avatar
  • 21
2 votes

Does a concealed Kan interrupt the game flow?

As the question refers to game flow, the short answer is yes. {OP MainQ} The long answer is that calling a kan (closed or not) does three things: First, It will break time-sensitive bonuses: any ...
Senjooooo's user avatar
  • 121
2 votes

What is a "dead hand"?

What I call a dead hand is one where there is no possibility of winning. The case I’m thinking of is a hand that was complete except it was missing one pair. All four of the needed tiles were out. ...
Julie's user avatar
  • 21
2 votes
Accepted

What are rules for completely blank tiles?

I know some sets use a blank tile for a white dragon. The red one could be a red dragon. This page has a blank white dragon. And according to this page (link provided by L. Scott Johnson): There ...
Toon Krijthe's user avatar
  • 11.8k
1 vote

Common Mahjong wait patterns

Update January 2023: There is a Mahjong Waits Infographic which shows common patterns: Links: PNG | PDF | Author's post (Reddit) Original answer As an additional resource, I created a tool for ...
dusan's user avatar
  • 111
1 vote

In Mahjong , what is the chance to get a hand that allows a player to finish on their first turn?

Here is yet another answer from this page. 以上により、天和の確率は12859078207674÷4250305029168216000 =約0.000003025 (約1/330530)となります。 I think it means that the probability to get a tenhou=tenwu is 1/330530. ...
pierebean's user avatar
1 vote
Accepted

In mahjong, how will joker tiles change the game strategy?

I don t see that this would significantly change strategy or play. I concur that playtesting would be a good idea. My understanding is that the "joker" was never a part of the traditional ...
David Siegel's user avatar
  • 1,197
1 vote

In Mahjong , what is the chance to get a hand that allows a player to finish on their first turn?

Note: I am basing this answer on Japanese Mahjong rules; Chinese rules will probably lead to a different outcome. Tenhou, Chihou or Renhou hands must be valid hands, i.e. they must satisfy the ...
Jan's user avatar
  • 334
1 vote

In Mahjong , what is the chance to get a hand that allows a player to finish on their first turn?

The https://tenhou.net/sc/prof.html page contains statistics on yaku. As I understand it, Tenhou (天和) is found in 0.00046% of the hands that ended in someone victory, and Chiihou (地和) in 0.00091%. ...
BiBi's user avatar
  • 11

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