The book I bought this time is titled "Mahjong Tactics Based on Statistics."
This book is written by Meenin, a well-known figure on the internet.
This information is based on a vast amount of game data from Tenhou, so it is highly reliable.
This time, I'll give a brief overview of the content.
A collection of articles on improving your mahjong skills, techniques, mental game, Tenhou (online mahjong platform), etc.
In terms of content,
Chapter 1: Taking the initiative with a riichi
Chapter 2: Push and Pull
Chapter 3: Defensive Play and Reading Winning Tiles
They are broadly divided into these categories.
For Chapter 1, we have set the expected value of "station revenue and expenditure" as the criterion for judgment.
This means that if you choose the option that maximizes your "office balance," your performance will improve.
The book clearly explains when to declare a reach, and whether a high-scoring, poorly shaped hand or a low-scoring, good hand is better.
This section overlaps with content covered in other books on push-pull strategies, so it also serves as supporting evidence.
The good thing about this book is that it quantitatively tells you which option is better and by how much.
Chapter 2 provides quite detailed guidance on how to decide when to push or pull.
Going a step further than "chasing in this situation" or "pulling in this situation," we also distinguish between pushing and pulling based on the level of danger of the tile discarded when declaring a reach.
Certainly, it's understandable that the outcome would differ depending on whether you discard a safe tile to declare riichi or discard a dangerous tile that doesn't fit your hand.
It seems that we will be able to perform push-pull maneuvers with greater precision than before.
The conclusion was quite unexpected, so I highly recommend it to anyone who cares about the push-and-pull dynamic.
The ability to incorporate situational judgment, unique to Tenhou, into this conclusion will be what will be required of advanced players going forward.
Chapter 3 also covers the fundamental and most important topic: fold-out.
It specifically explains which tiles to discard when there are no other tiles to discard, and the degree of risk involved.
Most people who read this page probably already know most of the information, but it's covered in quite a lot of detail.
Another interesting piece of data was the quantitative calculation of the multiplier that shows how the value of a score changes depending on the situation, such as which hand you have and how many points you have. (Winning Hand Value Index)
What I mean is that there's a huge difference in value between winning 2,000 points in the first round when you have 25,000 points, and winning 2,000 points in the fourth round when you have 35,000 points.
The more points you have, the lower the value of those points becomes, and the further into the game it gets, the higher the value of those points becomes.
Since this is quantified as a multiplier for each situation, it seems like it would be useful for improving the precision of pushing and pulling.
I think this book will be more helpful if you read it as a reference book after purchasing several other books on military tactics, as it will deepen your understanding.
This book alone won't systematically teach you how to push and pull effectively.
Your current score and the stage of the game significantly influence your decision to push or fold.
However, there is no other mahjong book that is so thoroughly backed up by numerical data.
Therefore, I felt that there were still some uncertainties and aspects that had not yet been resolved.
Currently, many AI programs for mahjong are emerging and are still in the learning phase.
However, until AI becomes the most powerful, I believe that learning about the importance of data from books like this is still extremely useful.
A collection of articles on improving your mahjong skills, techniques, mental game, Tenhou (online mahjong platform), etc.
