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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, ...
6 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 ...
  • 10.3k
5 votes

Am I allowed to take a red 5 after reaching?

According to the Japanese Wikipedia article on riichi: 打牌の選択(手牌の入れ替え)ができない。つまり、和了する場合と後述の暗槓する場合を除いて、自摸した牌をそのまま捨てなければならない。 Translating, this means "You are no longer allowed to select your discards ...
5 votes
Accepted

Am I allowed to take a red 5 after reaching?

I think most "official" rules will not allow you to do this. (For reference, I looked up the Japanese Mahjong rules from the European Mahjong association here.) In principle, I think swapping tiles ...
  • 2,133
4 votes
Accepted

What is a four-wind game called in Japanese mahjong?

According to WWWJDIC, the word is イーチャン, or 一荘 in kanji - read as iichan (although it's unusualy in that it appears to be written in katakana, which I'm guessing could mean that it's a fairly new ...
  • 10.3k
4 votes

Mahjong Betting Rules

The official mahjong rules do not allow for "cross" bets by players on each other, or by outside parties on or against players. Now this lady may have been playing by "house" rules in "her" games. ...
  • 20.7k
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 ...
  • 3,820
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 ...
  • 1,179
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 ...
3 votes
Accepted

Where does the term "sacred discard" come from?

I do not know the answer, but I asked in a experienced Mahjong group I'm in, kindly received a most valuable pointer and was subsequently able to extend it to this answer: Was it just a culturally ...
  • 6,862
3 votes
Accepted

Two player mahjong?

These rules have 2 and 3 person variant rules. So yes you can play with 2 or 3 people as well. Here's the relevant rule changes: Two-Player Mah Jong This is good practice for beginners ...
  • 1,065
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 ...
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 ...
2 votes

What Mahjong set of rules can be recommended to beginners?

My preferred ruleset is Mahjong Competition Rules, http://en.wikipedia.org/wiki/Guobiao_Majiang (I don't think anyone in the west call them by the name Guobiao though, or at least I have yet to hear ...
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 ...
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 ...
  • 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. ...
  • 21
2 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 ...
  • 1,739
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 ...
  • 11.6k
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 ...
  • 1,179
1 vote

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 ...
  • 11
1 vote

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 ...
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. ...
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 ...
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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%. ...
  • 11

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