Riichi yaku/scoring quick reference.

[Gamegrunt]

So is the quick reference officially factual, without error, in a usable format, with virtually no fluorocarbons or MSG? If so, I would like to create an illustrated version, adapted from this fine document, mostly for my own use. This is to be done in the hope that I might (one day) wrap my brain around this (almost) inscrutable version of Mahjong.

Gg

[HotelFSR]

I have made one that I think is clearer than any of the others I\'ve seen.

Will post it up when I get back to my desktop.

[Gamegrunt]

I have made one that I think is clearer than any of the others I\'ve seen.

Will post it up when I get back to my desktop.

That will be great! Is that cat still around? Cats make me nervous. :dry:

Gg

[Barticle]

Is that cat still around? Cats make me nervous. :dry:

I´ve only just realised that you were probably talking about my avatar! LOL! :laugh: I must´ve been having a slow-brain day before.

Don´t worry - he looks like a serious customer but he is harmless really. :silly:

I´ve had that image so long I forget where it came from originally - somewhere on the internet in the mid 90´s...

[Barticle]

I found a relevant cartoon - if you play mahjong with a cat in the room this might happen...

(EDIT: I´ve removed this image - the first in a series of six - as I posted it without the artist´s consent. See this thread for more info and a link to the full set.)

(the heading says \"I throw the dice\" and the other two words, my Japanese friend explains, are just appropriate sound effects)

[b4k4ni04]

hahah, I recognize that cartoon, there are 3 other panels too. I think i first saw it as someone\'s Twitter background.

[Poochy]

villadelfia wrote:

Since only 784 out of 34555325440392000 possible 14 tile combinations (136!/(14!*122!)) qualify for Kokushi Musou.
Even with 9 terminals/honours the chances would be slim, though I can\'t calculate how slim exactly.

Err, your math is WAY off here...

First of all, by my calculations, nCr(136,14) = 136!/(14!*122!) = 4,250,305,029,168,216,000.
Secondly, to calculate the number of combinations that would qualify for Kokushimusou, you have to keep in mind that there are 4 of each tile in the set.

13 different hands (i.e. 13 possibilities for the paired tile)
* 4^12 ways to pick the non-paired tiles
* nCr(4,2) = 6 ways to pick the paired tiles
= 1,308,622,848 combinations that qualify for Kokushimusou.

(This also means that if you\'re the dealer, your odds of getting a Kokushimusou Tenhou are 1,308,622,848 in 4,250,305,029,168,216,000 or 1 in 3,247,922,069.88. Or as the History Channel would call it, \"an everyday occurrence that could happen to you!\" :lol:)

As for the odds of getting there starting from 9 terminals, the odds change with each tile revealed because you\'re drawing without replacement, and it gets even harder to calculate if you try to take into account the fact that your opponents will be less likely to keep a lone terminal in their hand, but much more likely to retain a paired up terminal.

[chalwa]

Are there more of those comics? Can you provide some link? :]

[Barticle]

I found that first pic on a random mahjong website... but I´ve just tracked down another five through Google. :)

I´ll start a new thread for them in the Media forum.

[Gamegrunt]

* For 40+ Fu hands, only 4 Han are needed. For 70 Fu Hands, 3 Han are required. If there is a draw and a player only discarded honors/terminals of which none were claimed, it is known as a Nagashi Mangan.

Please to be explaining what this means?

What\'s with all the cats around here, anyways??? :blink:

Gg

[Tom Sloper]

* For 40+ Fu hands, only 4 Han are needed. For 70 Fu Hands, 3 Han are required. If there is a draw and a player only discarded honors/terminals of which none were claimed, it is known as a Nagashi Mangan.

Please to be explaining what this means

Nagashi Mangan is explained at http://www.sloperama.com/mjfaq/yaku/yaku.htm. As for the 40+ 70 Fu Fu, ya got me.

[b4k4ni04]

Best guess is how many fan it takes to hit mangan at those levels of fu.
Because:
20,30 -- 5 fan.
40-60 -- 4 fan.
70+ -- 3 fan.

[Barticle]

What\'s with all the cats around here, anyways??? :blink:

My theory is that they are attracted by the spelling... mahjong is spelt with two kanji and the second one means "sparrow" (and also appears in the names of several other species of bird). :silly:

Best guess is how many fan it takes to hit mangan at those levels of fu.

Yes indeed. The point I was making is that "5 Han = Mangan" is too simplistic - you can also get it with 4, or rarely 3, Han if you have sufficient Fu (minipoints). See my mathematical post earlier in this thread. B)

Nagashi Mangan is another way to win Mangan points - it´s a special yaku awarded after an exhaustive draw if you discarded only terminals and honours (and none were taken by other players).

It´s not something you´d go for very often, only if you were aiming for Tanyao and you kept drawing T&H tiles. I used to try for it when I first learnt the game, then gave up on it, but then got it three times in, like, a fortnight.

[Gamegrunt]

How do mangan points differ from other points?

Gg

[Barticle]

How do mangan points differ from other points?

They´re a different colour. :P

Mangan is the first of the five tiered limits applied to the total points paid for high value hands.

Here´s a summary from one of my guides.

Code: Select all

           |                |   Points for   | Points for 
           | Awarded for... | non-dealer win | dealer win 
-----------+----------------+----------------+------------
           | 3 Han & 70+ Fu |                |            
    Mangan | 4 Han & 40+ Fu |      8,000     |   12,000   
           | 5 Han          |                |            
-----------+----------------+----------------+------------
   Haneman | 6 or 7 Han     |     12,000     |   18,000   
-----------+----------------+----------------+------------
    Baiman | 8, 9 or 10 Han |     16,000     |   24,000   
-----------+----------------+----------------+------------
 Sanbaiman | 11 or 12 Han   |     24,000     |   36,000   
-----------+----------------+----------------+------------
   Yakuman | 13 or more Han |     32,000     |   48,000   

So if a hand has 5 or more Han then you don´t need to calculate the Fu.

A limit hand (Big Three Drags, etc) has a nominal value of 13 Han so you get the top limit; you can also make a counted Yakuman if you actually get 13+ Han from yaku (and probably dora too).