Strategy Thread: Hand Flexibility?

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Strategy Thread: Hand Flexibility?

Post by Lespar » Sat Mar 26, 2011 1:06 am

I've been watching a few replays of high rating players on tenhou and been trying to make sense of some of the discards.
While they're in dealer position it's easy to follow what they're doing since they play so aggresively and look for quick cheap wins, however in other situations they start to confuse me.

One theory I've come up with is that they manipulate their hands around the discards of the other dangerous players. For example, if a dealer's second discard is a 7-bam they might hold onto 6-bam or 8-bam because they're in a "safe" area. Likewise, a late discard of a 4-dot might cause a player to hold onto a lone 4-dot so that they can use danger tiles like 3-dot and 5-dot in their hand.

Is this at all possible? It's only a theory.

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Re: Strategy Thread: Hand Flexibility?

Post by Shirluban » Sat Mar 26, 2011 10:08 am

It is very possible.
Good observation!
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Re: Strategy Thread: Hand Flexibility?

Post by xKime » Wed Mar 30, 2011 1:22 am

A little black and white, but yes, there may be some of that. Except, I wouldn't call those 6-bam or 8-bam exactly a "safe area" (lolakagi), because the very same players may do saki-giri or just when they are unsure of what part of their hand to give up on, they may just do what we call "ryanmen kotei" (open ended fixation) whereas rather than deciding if you'll tear appart a penchan wait or discard a lone 3-7, you just break the 7 from 778 shapes 'for the moment', since you will most likely want to use the open ended wait rather than preserving the shanpon-uke. The 8 is a little gray, but there is also chance for a 67 fixation from a 677 shape. Rather than that, you keep dead honor tiles as "safe tiles" or explicitly furiten tiles as "safe against the dealer." Seldom do they slow their hand significantly for a little bit "safer" tiles, as there is no point. If your hand is in a state/shape where you will take a stand, then you go on with it, if it's not, then you fold; doing things half-way is what they say "just shooting yourself in the foot."

It's more important to keep a balance on how many steps you take forwards, and if you'll have space to back off later. What you probably saw was just a difference
about yaku/value/dora connectors. Can you post a concrete example?

(Also, there are two main currents in houou currently. Basically, one that makes emphasis on keeping most hands concealed and win by riichi + everything, using hardcore tile efficiency theories, and another one which makes a huge point on calling tiles whenever possible and win before getting to the "riichi zone" (about somewhere between the 9th and 12th discard). You can tell which one a player belongs to by looking at their 副露率 (calling %) and リーチ率 (riichi %) anyway. There are many other players with their own theories, but basically these two seem to be the most used. Also, never underestimate defense.

Image

He folded that hand to a riichi. That's some willpower/discipline right there)

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Re: Strategy Thread: Hand Flexibility?

Post by Lespar » Wed Mar 30, 2011 10:00 am

First. That background is awesome, how'd you get it?

And I see your point. Saki-giri seems to be a large argument against the akagi "safe" area system. Would it still be possible to use the "safe" area system against newer players (since i play with fairly new friends and in the lower areas of tenhou).

Also, from what I've read, tile efficiency theory is pretty basic (something that could be achieved perfectly by a computer program). So if the game of even the best players revolves around a "play aggresively until it looks like you should fold" strategy, wouldn't the maximum skill of players be pretty low?

Which brings me to the question, what type of factor does luck have at those levels? Will the best player in the world beat the 100th best player a good percentage of the time? (although i don't know how anyone's supposed to know the answer to that question).


I've been studying mahjong pretty heavily over the last few weeks and i'm intrigued by it. However it seems as if the amount of theory behind it is rather shallow (unlike poker which has billions of pages of information on the internet). How much is that due to the language barrier (how much theory is there in japanese?)?

Sorry for all the questions, I'm just excited to find someone who I can contact and knows stuff about mahjong :)

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Re: Strategy Thread: Hand Flexibility?

Post by Referee » Wed Mar 30, 2011 2:09 pm

He folded that Yakuman Iishanten hand? :shock: :shock: :shock:

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Re: Strategy Thread: Hand Flexibility?

Post by xKime » Wed Mar 30, 2011 2:42 pm

Lespar wrote:First. That background is awesome, how'd you get it?
When I became a paying member, first thing I did was download the windows client and just do a google search for tenhou backgrounds and voice files. There aren't many good ones out there, but I like that one the best. The default green is not that bad either. You can also make your own.
Lespar wrote:And I see your point. Saki-giri seems to be a large argument against the akagi "safe" area system. Would it still be possible to use the "safe" area system against newer players (since i play with fairly new friends and in the lower areas of tenhou).
Not just karagiri or ryanmen kotei alone, if your hand is in great shape, ditching a 7 from shapes like 457 isn't that strange either. "Safe area" is more of a matter of combining tsumogiri/tedashi information. Still, hand reading has its limits, and to choose slightly 'safe"er"' tiles to build your hand on when you may have other better prospects isn't all that good; if the difference is marginal, go for a good hand shape. Rather than that, it's possible you want to aim to wait on tiles the dealer isn't going to use, as he is less likely to fold. If you have to choose between a 57m and a 57s and the dealer seems to play the "I won't discard any manzu" game, I'd just ditch it and expect improvement in the souzu area.

In Janryuumon, most people play with the tiles in their hand automatically organized, and you can actually see how tiles come in and out of the places they are actually occupying in the player's hand. That's why when I see a tile comes out for a riichi, and the newly drawn tile is placed right next to where the riichi tile came out from, I consider that to be a "complete" area (patterns where you had 677 and you draw a 5 or 8 are the most seen), and if I'm not going to fold, then I lean a little bit more towards discarding that area.

Against beginners just play EV-wise, and don't rely on suji too much, unless you have a mangan or higher. Don't try to read, don't try to set traps, don't go too deeply. It can and will backfire.
Also, from what I've read, tile efficiency theory is pretty basic (something that could be achieved perfectly by a computer program). So if the game of even the best players revolves around a "play aggresively until it looks like you should fold" strategy, wouldn't the maximum skill of players be pretty low?
Tile efficiency isn't that basic, and the situation around you can't be achieved to perfection by a computer yet. Things like "if you have 35 and you draw a 6, discard the 3" are even intuitive, but within your tile efficiency you have moments where -you- must assess the situation and take a path. "Discard that 89 penchan in favor of that other lone 3? Or discard the lone 3 and keep the penchan? Wait, how many 7s do I think there are even left in the wall? If it backfires, how big of a backfire will it be?" or whether to push on with a 1 shanten from mentanpin dora, or just call for speed and end up with tan yao dora. Every instance in which you make a choice is a way to measure your strength. Within that very same tile efficiency. Also, knowing how to fold; how and when not to get your tiles called; how to make a come-back; whether to riichi or not riichi. If you just cut 1s and 9s and honors every round and you expect to riichi and win every time then your stats won't be impressive.

It's not "play aggressively until it looks like you should fold." It's more like, if your hand is in no shape to fight, don't push it too hard, and if your hand is in great shape to fight, do not restrain it. Doing either one of those things in an extremely half-assed way will only be a hindrance. Folding poorly, or attacking weakly, both will just drag you down. "Shoubu nara shoubu, ori nara ori."
Which brings me to the question, what type of factor does luck have at those levels? Will the best player in the world beat the 100th best player a good percentage of the time? (although i don't know how anyone's supposed to know the answer to that question).
Luck is always the same of a factor. It's more like, it really depends on the state of the players at that time, and how many mistakes they make. My game is definitely not the same on my first game as it is on my tenth or so. In rooms like, Houou Tonpuusen, letting your winning hand slide is something huge that will cost you the whole game. In lower levels, it may be forgiven, you may find some magic sand and mount a comeback while everyone was struggling to decide what direction to go. Houou allows for less mistakes than lower level rooms do. I imagine that the best player would make less mistakes than the 100th best player in a prolonged amount of matches.
I've been studying mahjong pretty heavily over the last few weeks and i'm intrigued by it. However it seems as if the amount of theory behind it is rather shallow (unlike poker which has billions of pages of information on the internet). How much is that due to the language barrier (how much theory is there in japanese?)?
How heavily? What material have you been reading?
It is rather scarce. That's why I actually got myself to do something and translate some basic theory from some pages. But there is a lot of material for more advanced players that I'd like to translate one day too. But as things stand right now, there not being enough basic theory and all, I decided to start there. Also, it makes the translating job easier.
The gap is huge if you consider the hundreds of thousands of mahjong theory in Japanese and Chinese in the net and otherwise. Blogs, magazines, books, broadcasts, explained matches with commentary, maybe even some manga and anime may have some merit, and even websites devoted to the topic. RM -is- a Japanese game, and as so, speaking the language gives you a good edge. I've been joining niconico live broadcasts recently; some may be a little bit like study sessions. And of course, it's impossible to understand the explanation without understanding Japanese.

However, it is possible to become a decent player even without such resources. Just play -consciously- as much as you can. I played 1000 matches for a whole year without reading a single page on theory before starting to read about mahjong, and I'd say it helped a lot. As a form of study, I would then comment on the match and upload it to my blog. Now my blog is mainly a screenshot gallery, but I used to do such things. The important thing is playing consciously, and set goals for yourself. I had a friend I didn't want to lose to, and to surpass him was good enough of a motivation to keep charging on.

We can play anytime you want, and then comment on the game afterwards. Whenever you have a few hours or so, I could set up a friendly match on Janryuumon, and call a few people in. It's much faster to arrange impromptu than tenhou. Just tell me, handlename is きめっち

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Re: Strategy Thread: Hand Flexibility?

Post by Lespar » Wed Mar 30, 2011 3:51 pm

Thanks for the reply, it really cleared some things up.

I've been reading everything (in english) that i could find through links. A lot of it was basic tile efficiency stuff and defensive play (sujis kabe etc.).
The main sites i've used are osamuko's blog and reachmahjong.

I've also read your blog (i knew i'd seen that background somewhere before!) but I found it hard to find any theory posts (though the events post were pretty entertaining anyway :P )


I'd like to play with you at some point. I have no idea how janryuumon works. I'm also pretty bad, I think I've got the basics down for tile efficiency and defensive play but that's about it. Still it would be fun and I'd like to learn (since I think I've run out of theory pages to read :P ).

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Re: Strategy Thread: Hand Flexibility?

Post by xKime » Wed Mar 30, 2011 10:34 pm

Lespar wrote:Thanks for the reply, it really cleared some things up.
You're welcome.
I've been reading everything (in english) that i could find through links. A lot of it was basic tile efficiency stuff and defensive play (sujis kabe etc.).
The main sites i've used are osamuko's blog and reachmahjong.
So you've read UmaiKeiki's posts on defense, and my posts in a few subjects?
This is the master list for my translations: http://riichiblog.blogspot.com/2011/03/ ... tions.html
I've also read your blog (i knew i'd seen that background somewhere before!) but I found it hard to find any theory posts (though the events post were pretty entertaining anyway :P )
I do situational theory posts sometimes. http://riichiblog.blogspot.com/2010/10/situational.html
But I'm not confident enough to do that too often. w
I also have a series of narrated videos in youtube.
http://www.youtube.com/watch?v=DJF3ni6hoVA (no narration, just bgm)
http://www.youtube.com/watch?v=cd11cJI4ZOc (narration in ippan)
http://www.youtube.com/watch?v=t-RGNuTar4g (narration in joukyu)
http://www.youtube.com/watch?v=5EoQ_A_MoAQ (narration in tokujou)

I'm hoping to be able to do a narration in houou one day.
I'd like to play with you at some point. I have no idea how janryuumon works. I'm also pretty bad, I think I've got the basics down for tile efficiency and defensive play but that's about it. Still it would be fun and I'd like to learn (since I think I've run out of theory pages to read :P ).
Well, you can just look into it and once you're ready and can do, you know where to find me.

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Re: Strategy Thread: Hand Flexibility?

Post by Lespar » Thu Mar 31, 2011 10:31 am

Okay i finally got it working (it was difficult since i can't speak japanese). What times are you free? I'm usually free around this time (give or take a few hours). I'm not free over the next couple of days but I'd definitely like to play with you and get some thoughts on how I can improve.

I've read through the master list of translations. I understand the theory. I haven't been able to find anything more advanced than that.

Your theory article was good, it's not something that has been covered much in other english articles so it was really helpful.

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Re: Strategy Thread: Hand Flexibility?

Post by xKime » Thu Mar 31, 2011 3:26 pm

Lespar wrote:Okay i finally got it working (it was difficult since i can't speak japanese). What times are you free? I'm usually free around this time (give or take a few hours). I'm not free over the next couple of days but I'd definitely like to play with you and get some thoughts on how I can improve.

I've read through the master list of translations. I understand the theory. I haven't been able to find anything more advanced than that.

Your theory article was good, it's not something that has been covered much in other english articles so it was really helpful.
I am always free. I sleep at weird times, but other than sleeping and playing mahjong online, seldom will I do anything else. Do you know how or can you set up a live stream? It'd be easier if you streamed your hand, so I don't have to use up a Log Disk to save the replay and review it.

Thanks. There are more things coming. Whenever I get myself to work into that.

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Re: Strategy Thread: Hand Flexibility?

Post by Lespar » Fri Apr 01, 2011 1:33 pm

I don't know how to live stream. I also don't know how to contact you on Janryumon (I only know how to join a public game since I can't read japanese).

If you could tell me or link a website on how to do either of those things i would greatly appreciate it :)

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Re: Strategy Thread: Hand Flexibility?

Post by xKime » Sat Apr 02, 2011 3:40 am

Lespar wrote:I don't know how to live stream. I also don't know how to contact you on Janryumon (I only know how to join a public game since I can't read japanese).

If you could tell me or link a website on how to do either of those things i would greatly appreciate it :)
There are many means to live stream. UStream is a popular one. Just google it, it should be in English and pretty intuitive. If your computer can handle it, it won't be too much of a problem.

Rather than contacting me on Janryuumon, contact me here or by email. You don't receive messages in Janryuumon while you are playing, and if I'm there I'm most likely playing, not looking at the lobby. But if you want to register me as a friend:

http://img690.imageshack.us/i/jrmss20101126193235.jpg/
Click on the down-left'est button that says "雀コミュ" click on 友達検索、enter my handlename きめっち and just confirm it. You'll be able to see my state (offline/online) and yeah, I suggest you play quite a few matches first to get used to the system. Another suggestion, do not play with your hand arranged by default. Other players can see where you take your tiles out from.

EDIT:

You might want to use this for live streaming:
http://www.livestream.com/platform/procaster/

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Re: Strategy Thread: Hand Flexibility?

Post by Lespar » Sun Apr 03, 2011 7:42 am

okay, thanks, I'll check it out. I'll be a little bit busy with assignments until the end of the week, so maybe we can play each other next weekend?
We should probably move the conversation to private messages :P

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