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[Paifu Analysis] Is their Riichi hand expensive?

Orginal post: http://doraaka.exblog.jp/15552053/ by Kita Haz. Translation by Butane with permission Hi. Sorry to be getting straight to the point, but let’s say that you’re the dealer in a normal round, and on the 8th turn someone declares Riichi while your hand looks like

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Identifying Dangerous Suji

Suji are a popular defense strategy; so popular, in fact, that suji traps are an effective anti-defense. We would like to increase the yomi level and create an anti-anti-defense by identifying when suji traps are likely. Are there situations in which suji are more dangerous? Are they really traps, or

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I told you not to go for Kokushi

We’ve all been there: you’re dealt a hand with a lot of yaochuu tiles — ones, nines, and characters — and you find yourself asking, “Do I go for the stupid thing?” Despite being one of the most common yakuman, Kokushi Musou still boasts a wide arsenal of ways to

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Real Life Mahjong Stat Analyzer [Python]

Lately, some of us at IRC (the ones who didn’t know a thing about programming to begin with! most fellows are actually quite profficient at it) have started studying some Codecademy tracks, learned about different programming languages, datatypes, yaddayaddayadda. What started off as a project of mine to build

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Statistics: The Value of a Lead

After I started playing mahjong, I learned one thing very fast. It is great to be in the lead. It’s not just great. It is amazingly awesome. You are like a champion looking down on the rabble, watching them scrabble around for crumbs from your table, more often than

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Tanyao vs Yakuhai?

After a certain tournament in Europe, I stayed behind and played a few games with some other people who also stayed behind. I asked them if they wanted to play with open tanyao, since I hadn’t had a chance to do so for the entire day (given that the

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Yaku defense guide: Toitoi and Yakuhai

Well hello there. It seems that some strategy for defending against specific yaku is in order here! Today, I shall discuss some ways to fight back against THEM TOITOIS, as well as those “yakuhai + rage” hands people complain about. If you’ve been playing Mahjong for a while then you

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Let's Debunk Some Mahjong Superstitions!

Hey, this is UmaiKeiki, a very lazy mahjong player — although I’m often in the company of some real addicts. They’ve scoured the internet for anything and everything related to Mahjong, and found some really outrageous ideas. Are the tiles given by Tenhou really random? Is a hanchan really