7 pairs is the last card.

 

Answer

Commentary

7 pairs is the last card

Basically, it is a special role that exists as the last hop.

 It is a special role that allows you to make Haneman (Riichi, self draw, 7 pairs, dora x 2) with any hand.

However, you need to remember that the probability of that winning rate is extremely low.

The occurrence rate in Tenhou is only 2%.

If you have another role to aim for, don't hesitate to prioritize that one.

In this case, it is the valuable tile x 2.

With the same 2 roles, the winning ratio will increase overwhelmingly.

If 3s is not a dora, then 3m or 5s for all ttriplets is also possible.

However, I don't look to discard Dora here.

Which is more advantageous, 4 or 6?

If you discard the 6, you won't be able to use it when you draw a dora.

34566 → 33456

Always keep in mind the change from 34566 to 33456.

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The city has been completely transformed into Halloween.

But the weather is great and it's still hot in Japan.

Today I'm wearing short sleeves and eating a pumpkin pie from Halofin.

Answer

②Concealed

Commentary

In the last article, I said that if you wait  Ryanmen, you should  call for following Riichi basically.

How about this case ??

Using the statistical possibliity from the last article, let's calculate the rough expected value.

Right side player has 5 dora. Hanneman is confirmed　(Riichi ＋Dora 5).

Following Riichi in the 14th round, the deal in ratio is approximately 15%.

Expected value of Deal in is roughly 13,000 (Haneman + Riichi fee) x 15%＝1950.

Win ratio is roughly 45% x 2700 points (average score for Riichi only in case of hided dora x 3) is 1215.

The rest is the probability of your opponent's self-draw x 3000 or 4000, but this can vary greatly depending on how your opponent waits.

If the opponent wait for Ryanmen , the self drawing probability is 17%, so the probability is approximately 4000 (30% chance of having a concealed dora x 3, which means there is at least one concealed dora) x 17%,= 680.

In addition, this hand has a large number of safty tiles for the Riichi, so we can decide that fold is better for this hand.

However, 

① If you really don't want to be won by the right side player.

② I don't have a safety tile.

If you have such conditions, it is acceptable to go to Riichi even in such an extreme situation.

Even if you can see Dora 5, the difference in numbers is about this much, so you can see how strong Ryanmen following Riichi is. 

Mangan waiting for Ryanmen is basically concealed

 

Answer

②concealed

Commentary

In this hand, it seems that many people think if I call for Riichi and self draw, I can get Heinemann!!

What do the statistics say??

Not only was there no difference regardless of the round, but in the 12th round, the expected score was higher for concealed.

Especially at the end of the game, Mangan waiting for Ryanmen is basically concealed.

Conceal your 5200 hand

 

Answer

②　Concealed

Commentary

 Last article said that the hand only flat hand is always Riichi.

How about all simples without flat hand ??

In this case, Riichi is bad choice.

On the far left column is the average score of winning.

The others are the statistical balance for each round.

There is almost no differences between calling riichi and concealed hand.

One of the reasons is the peculiarity of the score of 5200.

If you call for  Riichi from 5200, the score would not be doubled.

 you would only be paid 1000 points for Riichi fee and 2800 points would be added.

When it comes to round 12, the difference is only 100 points.

Still, even at 500 points, Riichi is still statistically ahead, so I think it's worth considering until round 8. Basically, concealed is the way to go.

Ready hand only Flat hand is always Riichi

 

Answer

①　Riichi

Commentary

Ready hand only Flat hand is always Riichi

This is a Flat-hand-only in the 12th round.

Whether to pay 1000 points riichi fee in order to get  more 1000 points of the hand of 1000 points.

Just remember this.

Flat hand only is always riichi !!

On the far left column is the average score of winning.

The others are the statistical balance for each round.

In the 12th round, even if you keep concealed, in the long run, you will end up in the negative.

Even if you don't win the hand, the effect of letting other players folding is tremendous.

You should also reach at the end of the game to reduce the possibility of your hand dealing in and to increase your chances of getting a no ready hand fine.

Kanchan of 3 tiles left vs Penchan of 4 tiles left

 

Answer

Commentary

Kanchan of 3 tiles left  vs  Penchan of 4 tiles left

Probably many players will drop the Penchan and keep the Kanchan.

The reason for this is that Kanchan can change to Ryanmen.

In reality, however, the possibility of Kanchan changing into Ryanmen is not that high.

The change to Ryanmen requires drawing one of the basic 4 or 5 or 6, and the possibility of drawing the remaining 4 tiles of Penchan is actually much higher.

With 3 7 "not even a single tile in the river", the odds of winning a Penchan are not that low.

If even one tile is visible, the win rate is drastically reduced.

In the case of only one tile of wait, remember that the difference between heaven and hell is whether there is only one in the river or not.

Straight vs triple sequences part2

 

Answer

Commentary

I will tell you again and again, basically, triple sezuences is more advantageous than straight.

But last article said the exception of this rule.

How about this pattern ??

In this case, to begin with, 2 tiles are needed in each roles. 

Triple sequences needs 1m and 3p.

Straight needs 5s and 8s.

But score is quite different.

Triple sequences can add the terminal in every group.

So you should give up straight and discard 4 to fix 1 2 3.

If you draw 5s, you had better not to discard 9s, but directrly discarding 5s.

And  if your left player discard 8s, you should  call for chow.

Of course, 1m must call for chow.

3p is controversial.

Because if you call 3p, very little chance for any player to discard 1m.

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Of all the healthy Japanese foods, none is as healthy as soba.

Soba flour is low in carbohydrates and fat, making it very healthy.

 

Straight vs Triple sequences

 

Answer

Commentary

Straight vs Triple sequences

Basically, Triple sequences is prior to straight.

Because, Triple sequences can be added All simples.

Exception is that you have honor tiles.

You can call for honor tile, you already have 4 elements when your hand has straight.

In another words, straight is prior to triple sequences when half flash can be added.

In this hand, you give up half flash when you draw 2-5m of 5p (Dora) first.

If other player discards red dragon, you should call for pong and look to half flash.

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How difference of the terminal tiles

 

Answer

Commentary

How difference of the terminal tiles

All suits include "6".

How difference in each 9.

Most important form is Pinzu.

This is worth remembering. 

If you draw 7, 

This called Ryanmen-Kanchan that is very famous form.

Sozu can make 2 elements if you draw 8.

Thus, 9m is most useless tile in this hand.

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The weather has become completely cool and autumn-like.

In Japan, we say that the sky is high in autumn.

This is the sky I like best.

How about red dora as waiting for 7 pairs

 

Answer

Commentary

Series of the way to wait for 7 pairs.

How about red Dora??

If you win by red dora, the score is double.

The principle is to focus the score

But this case is an exception.

As you can see, waiting for 5p is too bad a winning ratio.

Expected value is less than half of honor tile waiting.

If there are both 2p and 8p, you can wait 5p. 

The winning ratio is not so huge difference, so expected value is better than honor tile.

It can't be one or the other. It needs both of them definitely.

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Someone's holding on to a tile that hasn't been discarded

 

Answer

Commentary

Someone's holding on to a tile that hasn't been discarded

1 tile or 0 tile discarded in river , Which honor tile is better to wait ??

Winning rate of 1 tile in the river is higher. 

Of curse, most of honor tiles are not in the river in early rounds.

Turning point is 5 rounds.

1~4 rounds, 0 tiles in the river is better.

5~  rounds, 1 tiles in the river is better.

The tiles that have not been discarded until the 11th round are often held by someone else and there are few tiles in the wall.

In this case, you had better to wait for north.

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I love Umeboshi (japanese plum) very much.

This is Umeboshi ramen of AFURI .

The sourness of the plums goes well with the salty soup.

Wait for the dora for the 7 pairs

 

Answer

Riichi

Commentary

Wait for the dora for the 7 pairs

Of course, north is very good tile to wait.

In addition,  Dora can't be discarded to the riichi without a lot of help.

And yet, waiting for dora  still have the advantage than any tile.

That way, if you win, you'll get double dora.

As for whether to Riichi or not, basically, Riichi.

Even if you concealed ready hand waiting for the dora, it won't come out anyway, so you decide to call for riichi and get haneman by self-drawing.

-----------------------------------------------

Papabubble is a very popular store these days. 

There are very cute candies.

Trick Riichi is strong

 

Answer

Commentary

Discarding 4 and waiting 7 is called Moro(completely) Hikkake (trick).

This is relatively strong method.

In the rule of including red Dora,  expected value of waiting 5 is a little bit higher than others.

Even with that, winning rate of this trick is strong statistically.

Especially, It's even more effective when used for following Riichi.

The players who don't have safety tile will discard, and it is too difficult to have common safety tile for multi player.

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This is "Kyoho" ; japanese variety.

One of the Japanese autumn scenery.

Double Riichi of bad form or look to good form

Answer

Riichi

Commentary

Double Riichi of bad form of look to good form

If you discard 8p, you can create good form(multi wating) by drawing 3 4 5 6 7 8m＋2 3 4 5 6 p＋2 5s . 

 

Further more, 3m can make triple sequence.

Even under this condition, double Riichi is suprerior  to backing to one before for ready in statistical analysis.

So, in most cases, you remember " double Riichi is better".

--------------------------------------------------------

Tom Yam Ramen at Mango Tree.

One of my favorite Ramen.

Marriage of Thai land and Japan.

Set goals and move on

 

Answer

Commentary

There are 3 pairs ＋ 1 triplet in this hand.

You never exclude 7 pairs and All triplets, finally 4 concealed triplets.

SO you must not discard 4m, and east.

East is only one tile so far but it is important because you are east seat.

If you draw one more wast, your hand get more 2 roles so called double-east.

And win by All triplets＋Double east, you get 8000 points.

4p and 5s have possibility to triple sequences, 3 4 5 or 4 5 6.

2s is most useless.

If you draw 3s in early round, you can't get any role, even flat hand.

If you draw

3m (Dora) 　　　→  Riichi ＋Dora

East          　　　→  All triplet

One more pair　  → 7 pairs

3 4 5p or s            →Triple sequences

 

leaving 2s is most halfway.

--------------------------------------------------------------

This is a fried rice of "Ippudo"

I love pork soup Ramen very very much, as a matter of fact, Fried rice of Ippudo is really delicious rather than Ramen.

Hot TAKANA (veritable in the small dish)  is the best marriage.

Retrogress to one before for ready

 

Answer

Commentary

In 11 rounds, Kanchan (gut-shot) win rate is only 34% and deal in rate is 15%.

→refference 

You have enough point, and the game is close to end.

In this case, you had better not to call for Riichi waiting bad form and low score.

If you win by  this hand, you got only 2600 pt.

Further more, when the other player win by self draw, you have to pay more 1000pt (Riich fee).

So, The risk/reward is not balanced in case you call for Riichi.

You had better to look to the final form that can win concealed or can win even if you call for pong or chow.

If you discard 7p and retrogress one before for ready,  you can win in concealed when you draw 2m, 3m, 6,m, and 4p.

Even if not so, you can call for chow 2m, 3m, 6m. 

Especially, if you can call for 2m, you can wait by Ryan-men. 

 

Indeed, this hand win by calling for chow 2m, and self-draw 3m.

--------------------------------------------------------------------

This pasta is "Roma taste spaghetti" of Roma station.

This restaurant has over 50 years of history in this place.

This pasta is one of the Yokohama's signature dish.

You gotta try it once.

Look to a good form of one before for ready

 

Answer

Commentary

Look to a good form of one before for ready

At a glance,  it is no risk to discard 2m or 4s fixing Ryan-men.

Indeed, discard 6p lose waiting for 4 tiles of 7p.

And discarding 2m or 4s lose 2tiles of each ＋2 tiles of 9p.

The difference is that  this hand progress.

When you have Ryanmen × 5 parts , We need to get rid of one of them.

If it comes to that way, you should decide 4 Ryanmen first.

How do you do ??

And if you chose  either  Ryanmen,  you have to leave useless tile.

How about this.

you discard 4s, and make perfect one before for ready.

There is no useless tile in this hand.

-----------------------------------------------------------

Takoyaki is one of my favorite food.

Do you know ??

The way to catch All Simples

 

Answer

 

Commentary

Leave an exchangeable for terminals

It seems equal whichever you choice.

This form is frequently seen, so you remember in a fixed form.

If you have a triple side wait (1-4-7, or 3-6-9)　＋　lined pair (33 66, or 44 77)  ; only 2 pattern

・pattern1 

1-4-7 waiting ＋ 33 66 (this case) 

23456789 ＋3 6 pair ＝ 2 3 3 4 5 6 6 7 8 9 

・pattern2 

3-6-9 waiting ＋44 77 

12345678 ＋4 4 pair＝1 2 3 4 4 5 6 7 7 8 

you Should leave an  exchangeable for terminals ; that is 6 or 4.

So you must discard 3 or 7.

The reason is there is a difference in drawing 7 (pattern1) or 3(pattern2).

In this case, when you draw 7  if you discard 6 is below

3 is leftover tile, and you miss all simples.

If you have discarded 3 first, your hand is below when you draw 7 

you  can discard 9 instead of 6, and you can get All simples.

 It's a small detail, but the degree to which you take these considerations into account will make a difference in your mahjong skills.

If you want to become an advanced player, this is the basic knowledge you need.

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In japan, it is terrible rainy in those day.

There has been a terrible disaster in Kyushu.

Yokohama is not so, but people aren't likely to go out.

I use UberEats today.

Today is PIZZA COZOU, my favorite Yokohama Pizza ranking  is 2nd shop.

I am worried about the people in Kyushu.

I hope it will stop soon.