The way to take one before to ready

 

Answer

Commentary

The way to take one before to ready

At first glance, it looks like we're going to discard 3m.

If you look to Three colors sequence of 6 7 8 , this hand is two before ready. 

You have to draw around 6s, and then, this hand can reach one before to ready. 

If you discard 6s, this hand can reach for ready hand by drawing 4 6 9m. 

Additionally this  6 9m waiting,

Can you see this Ryankan (double gut shot)　？？

And

"9 tiles role (ex; Straiight or three colors sequence) is considerable from 7 tiles"

You gotta remember this Mahjong proverb.

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Yokohama is beautiful port town.

Nippon maru is going to anchor Yokohama port tonight.

The Olympic emblem is shining before the ship.

Look to Pure terminal hand

 

Answer

Commentary

Look to pure terminal hand

This hand has only 1〜3、7~8 tiles.

If you draw 2m, and complete triplet of 2m, you fail to make terminal hand.

So you had better to refuse 2m, and make elements by using isolated 9m or 8s.

If you draw around 9m or 8s, you can call for chow 3m, 2p, and 3s, or pong 1m or 1s.

If there is one more pairs in this hand, it is complicated because you should consider 7 pairs.

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Baseball of Olympic has begun today !!

The road around the YOKOHAMA stadium is closed, and we can't close to there.......

This corresponds is rightly because there is a people who want at least the sound alone, like me.

Good luck JPN !!!

Always aware of extending the sequences

 

Answer

Commentary

It is easy to take the form of 5 6 6 7 7, which is often seen in double sequence, but do not discard the 4 here.

Don't miss the form discarding 7 and drawing 3m (The figure below)

It can makes triple sided wait (2-5-8) to discard 6.

you always had better to give up making Double sequences except when you call Riichi and external tiles can achieve double sequences (ex; 6 6 7 7 8 ,  1 2 2 3 3 ). 

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Starbucks sells special Frappuccino whitch sells limited in each prefecture.

Yokohama belongs to Kanagawa prefecture.

The Kanagawa Frappuccino is made with butterfly pea tea syrup and citrus peel, inspired by the sea.

Very good.

Avoid taking double acceptance

 

Answer

Commentary

Avoid taking double acceptance

This theme was mentioned a bit in For Beginner 16.

If 3s is discarded, there will be three types of acceptances: 1 4 7m.

If you discard one of Manzu elements, you have a total of four accepted hands, two with Manzu and two with Souzu.

So, which would you rather discard, 2 3m or 5 6m?? 

In flat conditions, waiting for 1 4 is easier to win than 4 7, so discard 5 6m.

n actual games, how many tiles are discarded on the river determines how easy it is to go up.

If the difference in the number of tiles discarded between 1 and 7 is less than one, 1 4 is superior.

If two or more tiles are discarded, it is easier to win if fewer tiles are discarded.

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Today's lunch is at ALOIN JIRO which is famous as soup carry.

I have a veritable carry.

Steak carry is also very tasty. 

please try it if you come to Yokohama.

This shop is near YOKOHAMA stadium where baseball game of olympics takes place.

Mahjong improves the Executive Function~

Playing Mahjong for 12 Weeks Improved Executive Function in Elderly People With Mild Cognitive Impairment: A Study of Implications for TBI-Induced Cognitive Deficits

 

Commentary 

The journal in which this paper was published, Frontiers of Neurology, is an open access journal, but it is an authoritative and well-known journal.

The impact factor (a number that indicates the importance of a journal) at the time of publication was 3.5, making it an important journal with high scientific credibility.

This paper is excellent in that it is an intervention study and assesses brain function over time by comparing people who played mahjong with those who did not (controls).

What is Executive Function??

Executive function is the advanced cognitive function for completing tasks and/or overcoming difficulties involving prefrontal cortex-mediated working memory and reflection, planning, organization, and management.　(from this paper)

If this function is impaired, we will not be able to plan and do things in order.

This is a core function of the so-called "higher brain functions".

Trail Making Test (TMT)

This is a very common method of testing for executive function disorders.

This is a test in which you have to trace a piece of paper with numbers and alphabets on it in one stroke without crossing the lines.

The shorter the time taken from start to finish, the better the executive function.

The longer it takes, the worse the executive functioning is.

(from this paper)

TMT wikipedia

MoCA-B 

The MoCA is a cognitive function test, similar to the MMSE.

The B in MoCA B stands for Beijin, which is the Mandarin version.

The Japanese version is called MoCA J.

Abstract of Paper

We gathered 56 elderly people over the age of 65 and let 28 of them to play mahjong three days a week for one hour at a time for 12 weeks.

The remaining 28 patients were tested only (control).

The mahjong group (black circles) showed an increase in the MoCA (top left of the figure) score and a clear decrease in the time spent on TMT (top right of the figure).

This paper saids

「This finding may reflect the fact that playing mahjong is mentally and intellectually challenging. In order to win the game, participants need to concentrate as well as judge and predict the next moves of others in order to select the best strategies to win. Eye and hand movements are also required to play mahjong. All these activities may have mobilized cognitive reserves in the brain and thus enhanced executive function」.

Summary

The results of this study indicate that mahjong may have restored executive function once it was lost.

In the future, mahjong may be used to rehabilitate people with impaired executive functions due to head trauma.

capture

Similar studies have been done in Japan, where TMT in the elderly has been reduced in time with the intervention of mahjong.

https://www.nisikyu-u.ac.jp/nagahara/uploads/ck/adminmini/files/図書館/紀要/西九州リハビリテーション研究/Vol.4%202011/4-02.pdf

Brain function has been shown to improve with new experiences, even in the elderly.

Try mahjong as a new hobby for your old age！！

Priority of pairs

For Beginner 17

Answer

Commentary

Don't miss the change for Flat hand.

In the last game  in （almost) top, and you'd like to finish with a concealed hand as much as possible.

Even if it goes to ready hand, you can't Ron without calling Riich.

If you discard 8p, you will get this form when you draw 5m, and you will be able to win with concealed flat hand.

When discarding Pairs, try to discard from isolated places.

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Table Tennis! 

Congrats on your mixed doubles gold medal!!!

I'm impressed !!!

Three colors sequences is prior to Straight

For Beginner 16 

Answer

Commentary

Three colors sequences  > Straight　

This is the scene that no parents and a big hand is needed.

Both Three sequences and Straight are the same in terms of two roles. 

But there is a clear difference between them,

Whether it has the option of all simples.

Therefore, when you want a big hand, the basic rule is to aim for three colors sequences.

In the case , Discarding 1p is advantageous in terms of the number of cards accepted, so you didn't  think there is much doubt, but please keep it in mind.

Japan celebrates gold medals in judo and skateboarding.

Today is the final of the mixed doubles in table tennis!

Cicada is also cheering.