About the fact that the heir of Huajian School is a girl

For example:

If there are three consecutive empty rows, three empty columns, or three empty squares arranged together, there must be no unique solution to the problem;

If the clue number is only seven or even less than the nine numbers from one to nine, it must not be a unique solution;

Any two rows/columns in any of the three parallel squares are completely empty, which is definitely not a unique solution;

……

But how do you explain this?

Speaking of NP-complete problems, they will definitely become more entangled.

Li Qingcha was helpless, and he sighed in a pretentious manner, saying, "As long as you think enough, the answers to some questions can be seen at a glance."

hiss……

Everyone gasped.

Li Qingcha waved his hand and said, "Next."

The tiger demon child left reluctantly.

The second Sudoku puzzle was set by a fox tribe member. The question was relatively rigorous and you couldn't tell the problem at first glance.

Li Qingcha took out the pencil he carried with him.

Seeing her actions, the fox demon child couldn't help but get excited.

If we can defeat Mr. Li head-on...

When he thought of this possibility, a blush appeared on his face.

However, ideals are full and reality is skinny.

Li Qingcha turned her pen, and in an instant, her demeanor turned into shocking calmness. Her brows seemed to be filled with a murderous aura that made people feel daunted.

After all, I am an engineering student, and a top problem solver at that, so solving Sudoku puzzles is extremely easy for me.

The fox demon child thought that Li Qingcha would answer while marking, which is also the best way to solve Sudoku.

As a result, he found that when Li Qingcha filled in each box, it seemed that he didn't need to think at all, as if the correct answer was spread out before him and he just had to copy it.

In less than a minute,

"All right."

Li Qingcha looked at the answer and said, "It seems that this Sudoku puzzle does not meet both criteria."

She pointed out the two Sudoku grids.

"The numbers in these two groups can be swapped, which means there is a second answer."

No one responded.

Yuyun and Chi Weili looked at Li Qingcha with eyes full of twinkling little stars.

Crazy yet handsome.

Yujun: This is the man I chose!

Chi Weili: This is the woman I chose!

They thought the same thing.

Li Qingcha waved his hand.

"next."

So, the children came up one after another to give themselves up, and their confidence was hit.

No matter whether it was a carefully laid out Sudoku or a bold and rough one, none of them could last more than two minutes under Li Qingcha's hands. Even 30% of them did not need to be answered, as one could tell at a glance that the solution was not unique.

Everyone thought that this selection would last a day, but in the end it only lasted an hour and a half.

It’s not even time for lunch.

Li Qingcha stretched lazily.

"next."

"..."

"..."

"..."

She was greeted only by eerie silence.

Li Qingcha raised his head.

"Is it gone already?"

The children couldn't help shivering when they saw her relaxed expression.

Chapter 568 How to deal with Xiong Hazi

"Is this the end?"

"Of course, how long do you expect to delay?"

"Tsk... that's amazing."

In the crowd, the people having conversation were the Left King Li Hulun and the Right King.

The two agreed to return to the royal court and decided to visit the human race's academy again this morning. Unexpectedly, they encountered such a big drama.

They were so fascinated by the sight that they even delayed their departure.

Li Hulun looked at the Right King and gave him an extremely sinister smile.

Yesterday, his mind told him that Li Qingcha could not win the bet, but his emotions felt that Li Qingcha could win.

After what happened today, this feeling has become even clearer.

On the other hand, the Right King also developed a sense of crisis.

"Li Qingcha is indeed quite capable."

Li Hulun chuckled.

"Isn't it a little late to realize this now? Ever since the Western Regions Buddhist sect challenged Confucianism, you have fought against it openly or covertly three times, and you have never won."

"You... Humph! Do you think a bunch of kids can learn to settle accounts in three months? What's more, they are a bunch of naughty kids. A few of them are enough to give us a headache, but forty or fifty of them would be fatal, wouldn't it?"

"Everything is possible for Li Qingcha."

Li Hulun looked calm.

The Right King glanced at him and thought to himself how come this man was just like Yujun, also being drugged.

He shook his head,

"No, Li Qingcha can't win."

Li Hulun spread his hands, too lazy to argue anymore.

The main reason is that he can't explain it clearly, because he believes that Li Qingcha can win, without any evidence, but out of irrational intuition.

Intuition cannot be used as an argument.

He said, "Let's go?"

The Right King smiled.

"Aren't you going to finish watching this show?"

"Nothing to see. You just said that it's hard to manage naughty kids. What Li Qingcha has to do next is to give them a beating and establish his authority so that those troublemakers won't make trouble."

"I think so too."

The two of them reached a rare agreement.

Li Hulun turned around and left with his guards.

The Right Prince glanced at Li Qingcha again, and finally his gaze drifted to his own daughter. He couldn't help but sigh.

I hope Yujun won't mess around...

He shook his head helplessly, then waved his hand.

The team marched away.

In the crowd, Li Qingcha had actually noticed the two people a long time ago. He watched them leave with their men and horses, but did not stop them.

We knew yesterday that the two kings would return to the royal court.

She glanced outside the school building and found that the monsters present were looking at her as if she were an alien creature.

At this moment, the demon people had only one thought in their minds:

Can Li Qingcha still be considered a human being?

The demon children have not received systematic education, but that does not mean that their intelligence is undeveloped.

They knew very well that it was difficult for a person to concentrate on studying a topic for a long time, unless they were Confucian monks of the human race, with the help of Qi, they could study like a desperate man.

Li Qingcha is not a Confucian scholar, but he can do Sudoku with high concentration in one and a half hours.

This can only prove one conclusion -

In Li Qingcha's eyes, Sudoku is not a puzzle, but a game.

It’s not so easy to get tired when playing games.

Emmmm......

To some extent, Li Qingcha can no longer be considered human.

"..."

"..."

"..."

There was silence.

Li Qingcha moved his wrists and cervical spine while saying, "Although a few Sudoku puzzles left a deep impression on me, rules are rules, and no one passed this round of extra tests."

Everyone was silent.

In fact, many parents of students are dissatisfied.

But they couldn't refute it.

Because the request was made by Li Qingcha yesterday. If they felt there was a problem, why didn’t they say it yesterday?

Now if we continue to argue, it will be neither right nor reasonable.

I can only sigh helplessly.

Seeing that no one said anything, Li Qingcha turned around and looked at the students who had been selected.

"Do you have anything to say?"

The students looked at each other, then lowered their heads tacitly.

tsk...

Li Qingcha was shocked.

"Now your movements are quite unified, pretending to be well behaved. Where is the complacency just now? Where is the feeling of being superior to others?"

"..."

The students were so frightened that they kept silent.

Li Qingcha walked to the podium and continued, "Let me ask you a question."

As he said this, he picked up a Sudoku paper.

"If you were asked to come up with Sudoku puzzles according to the requirements of the extra test, how many of you would be able to pass?"

you still need to ask?

The answer is definitely no.