After winning the Sudoku online competition, Li Xuan was in a good mood and wanted to sing, turned off the computer, and communicated with the system: "System, how are I doing? I'm not as good as you said about the face of the women's clothing industry in the future."

The system's nagging voice came to my mind: [A Xuan, this time you are lucky. There are two possible numbers to try to calculate the first space. If you are deceived by one-half, you will narrowly win. Please be humble, this is the usual virtue of our future women's clothing industry.]

Li Xuan was dissatisfied and said, "You know, luck is also part of your strength. In addition, the system, please call me the host. I'm so cautious when you say Axuan, thank you!"

System: [Okay, I have to tell you, I analyzed thesky's answer steps and found that her simple steps in the last few seconds have slowed down. I guess she was distracted, otherwise you would not be able to beat her. When she was in the worst condition, she met you who performed the best.]

Li Xuan didn't know that thesky was still distracted in the game. Because he cared too much about winning or losing, he went to the rankings? As a challenger, he still had the advantage psychologically. Despite this, thesky was still closely behind and did not fall much behind.

“Thesky is so powerful…”

Li Xuan was so proud that he didn't dare to disrespect thesky. Instead, he admired thesky a little. How did such a person have a head?

The system encouraged me again when I saw it: [No, Xuan Mei, in general, you are still a boy who is better and good-looking, so I can choose one in a thousand.]

Li Xuan said loudly: "System, who is Xuan Mei called? Your uncle, what should I do if I want to hit you now..."

【Okay, if you can beat me, I will beat me.】

...

...

In the International Sudoku Online Competition, thesky was defeated by unknown people, causing some minor commotion. Although this online competition is not important and the game is relatively large, the meaning of thesky's eight-game winning streak was somewhat different.

After thesky lost, he looked at the computer in a daze, and felt a little dissatisfied. This time she lost because she was a little unlucky and had a wrong direction in the solution, not to mention that she was distracted in the end and gave Li Xuanke an opportunity to take advantage of it.

She broke the computer screen in discomfort and vented a few times, annoyed that her winning streak was over.

This time Li Xuan did attract her attention. After netizens discussed that Lixuan seemed to be from China, she guessed who it was in China, and the few experts she knew didn't look very similar.

Finally, she couldn't help but send a message from a friend to ask Captain Qiu of the China National Sudoku Team. The captain was a top student in Tsinghua University, but Team Qiu was also confused and could not lock in who it was and could not give an accurate reply.

Thesky then gave up asking, it is normal for more than one billion people to crouch tigers, hide dragons.

This competition was held in Li Xuan's live broadcast, and there were still many netizens watching it, which had a certain influence. The next day, Tencent News reported this incident, and the title was: "my country's unknown high school student live broadcast defeated thesky, the world's number one Sudoku master!"

Le Ziyao was browsing mobile web pages at home. When he saw this news, he suddenly opened his eyes wide and sat upright. The screenshot of Li Xuan's live broadcast on the news came to his face, and his eyes gradually became empty, and he felt a strange feeling in his heart.

Maybe he was obsessed with the devil. He had clearly seen Li Xuan, why was he impressed? Looking at this familiar picture of the news, he remembered that distant afternoon. The handsome boy with short hair was so charming that he was so handsome that he was so beautiful that he made the beautiful sunset outside the window pale.

Such a good-looking person, is so good at playing Sudoku?

Le Ziyao also likes to play Sudoku, but his speed is incomparable to Li Xuan, and it takes a few minutes for a simple question.

There were some comments bragging about Li Xuan under the news. Le Ziyao felt that Li Xuan was smart, so he reviewed it one by one.

"I was scared to see the problem-solving time." Like.

"This speed bug... is anxious for my poor head." Continue to like.

"A person like a god. I am probably not the same species as this kind of person." Oppose, please do not discriminate against species.

"Compared with this kind of person, I'm just paramecium." Forget it, let's give paramecium a thumbs up.

"It is said that the national Olympic team can calculate the five-digit multiplication in one second, so I'm kneeling." I can't praise this, but it's nonsense.

"This high school student is very good, but I want to say something, don't blame me if it is not right, what is the use of Sudoku, what is it helpful to humans and society, and what is the meaning of no matter how fast it is?" Sure enough, I came, I was so wise.

Le Ziyao was like the emperor's relaxed and freehand style while reviewing memorials.

Today he has become obedient and dares not do bad things by hackers. When he was caught by the school, his stupid crying formed a sharp contrast with Li Xuan's calmness, and those scenes are still engraved in his mind.

Looking at Li Xuan, he felt embarrassed. In his opinion, boys must not cry. He could only explain with his own thinking. He was no longer him in the past. Humans would not step into the same river twice. Everything is changing. He has changed now.

Yes, he has grown up.

Le Ziyao was very sure of this because he always felt that he was beginning to be sentimental, and his only edges were worn away by the last experience.

To be honest, he had a strange feeling about Li Xuan. It was not a complaint about Li Xuan giving advice to the school to catch him, but a kind of admiration and admiration. He wanted to be as outstanding as Li Xuan and no longer play in life.

After being the first place in the exam, he is good-looking, handsome and friendly to others. He will patiently answer anyone who has any questions when asked. Such an excellent person will find it difficult for people to feel jealous.

The live video of the International Sudoku website recorded the battle between Li Xuan and thesky. Le Ziyao was in a complicated mood and clicked on the live video to look silently.

While watching the video, the voice suddenly came from beside him: "Brother, what are you watching?"

Le Ziyao looked up when he heard the sound, saw her sister Le Zhishui, and said casually: "Watch the video."

"Is this Sudoku?" Le Zhishui was wearing overalls, sat beside Le Ziyao, and came over to watch it. After watching the battle video, she was very surprised, "This Sudoku is so fast!"

Le Ziyao smiled and introduced the two sides of the video:

"This is a video of thesky's battle with Chinese high school students. Zhishui, have you heard of thesky? If you don't play Sudoku, you may be unfamiliar. Let me introduce you to thesky. The Sudoku World Championship is the first player in the Sudoku World Championship. The official website of the International Sudoku official website has maintained an unbeaten record for eight consecutive months. It has created a miracle of solving simple Sudoku questions for several and half minutes. However, such a god was defeated by an unknown high school student in our country yesterday. This high school student is from our school."

Le Zhishui held her breath under her breath: "You are from your school?"

Le Ziyao nodded, "The top student in our school."

Le Zhishui's expression was hard to hide her admiration. She learned through a program that some Sudoku masters participated in one program, which allowed her to see the horror of Sudoku masters for the first time.

She immediately mentioned the show: "Brother, your school's top student is so powerful, you can participate in the Super Brain. Isn't Super Brain blindly filling in Sudoku in one episode? It will definitely become famous."

Le Ziyao shook his head: "The super brain Sudoku problem is relatively difficult. The program deceives people and participates in all contestants to highlight memory, which is amazing, but memory is only one aspect of intelligence, and Li Xuan has high intelligence in all aspects."

Le Zhishui said oh, obviously not thinking so.

Le Ziyao felt uncomfortable: "Replace the color with numbers and memorize it as a template. Not to mention Li Xuan, even if I recite the template at home for a month, I can also use a super brain performance to fill in Sudoku blindly?"

"Just blow it."

...

...

Captain Qiu, the Chinese Sudoku national team, is a Sudoku fanatic, and his goal is to win thesky one day.

He has an account on Douban with many fans. I heard that someone defeated thesky. He opened a topic on Douban to analyze the battle between Li Xuan and thesky: "Line-clicking on my country's high school student Li Xuan vs the world's sudoku No. 1 person in the sakura".

"First, let's scan the blindness for those who don't understand Sudoku. The rules of standard sudoku: based on the numbers on the 9x9 disk, deduce other remaining spaces, and satisfy the numbers in each row, column and every thick line in each row, each column and every thick line are included in 1-9, and are not repeated. In addition to standard sudoku, there are other rounds of variable Sudoku, so the rules will not be introduced in detail."

"Below I will analyze the process of answering Li Xuan based on the official website video. You can feel how amazing Li Xuan is:

The first round: Standard Sudoku simple questions, se coefficient = 1.8, 33 known numbers, and Li Xuan’s solution time is 42 seconds.

【picture】

Official website problem-solving video link.

The first sudoku question is not difficult, Li Xuan's speed is not very fast, but the speed afterwards becomes more and more terrifying.

The second round, the Sudoku simple question is transformed, the se coefficient = 3.4, 23 known numbers, and the solution time is one minute and 12 seconds.

【picture】

Official website problem-solving video link.

...

In the 16th round, the standard sudoku urn puzzle, se=9.9, 26 known numbers, and the problem-solving time is 1 minute and 56 seconds.

【picture】

Official website problem-solving video link.

"Explain what SE is. The SE coefficient comes from the SE software evaluation and is used as a reference for Sudoku difficulty. It is the mainstream sudoku difficulty ranking in the world. It is recognized as more reasonable. Generally speaking, a SE coefficient of 2.6 or above requires a test number solution. The SE coefficient of 7.1 is a strong chain. If it exceeds 7.1, it is difficult to crack it by logical reasoning.

The number solution is simply to guess what number that space may be, and then look at other constraints to eliminate the possibility and get the only solution. This solution is only for ordinary people. For some special groups that are not within this range, some difficult problems can be solved by chain techniques, or intuitively see the answers to super-difficult questions, which requires a strong sense of number. Many experts are intuitive.

In this way, you should know that this high school student in our country only took 1 minute and 56 seconds to solve the sudoku problem with difficulty se=9.9, so you can't achieve this speed by practicing training skills alone."

...

There is still some discussion on the topic.

A netizen commented under the topic: "Captain Qiu, can you analyze the last Sudoku question?"

Team Qiu saw it and decided to disassemble the official last question for netizens and see how this high school student won thesky.

First, he clicked on the answer video recorded on thesky's official website to analyze thesky's ideas.

This problem with a SE coefficient of 9.9, thesky's first step filling method is consistent with Team Qiu's idea. He filled in 4 in the space in the fourth house. Do geniuses have the same intuitive sense of numbers?

Team Qiu was very happy.

When he arrived at the second step, his thoughts were different from thesky. When Team Qiu saw this question, the second step was that one of the empty may be 8 or 6 for another palace, and thesky continued to find the possible locations of the other 4. Sky's thinking jumped a lot.

Then thesky found that the only remainder of this sudoku was 3, and his skill was beyond his reach. Team Qiu could only admire him after watching it.

Later, thesky filled in many candidate numbers but still couldn't solve them. Team Qiu felt that his luck was not on thesky's side.

"It's a pity that thesky has a certain probability of choosing the wrong candidate number and being incorrect in the direction. No wonder he lost, he has a bad luck."

Team Qiu sighed, analyzed thesky's ideas, summarized the reasons for her loss, and then clicked on Li Xuan's problem-solving video, preparing to write down the two's problem-solving ideas for netizens to see.

However, when Team Qiu clicked Li Xuan's video with anticipation and was about to witness the miracle, he only saw that Li Xuan had not filled in the previous number in the official website answering video. In the last few seconds, the nine-cup grid was filled in in the order of front and back, and suddenly it was filled.

Team Qiu: "????????"

What's the thing? Is it like this?

Team Qiu's hand holding the mouse was a little stiff, so he had no choice but to read it again, but he couldn't understand what Li Xuan's thinking was. Li Xuan's answering process was very strange.
Chapter completed!