Liu He, who was watching at the scene, was a Sudoku enthusiast, when he saw the flashing numbers on the cube for the first time, he also followed Lu Li to recognize that this was a certain Sudoku game at a glance, but when he was also thinking to himself, he found that the man who was suspected of cosplay had quickly solved the first Sudoku, and without waiting for him to see clearly, the second and third were also solved.

"This man...... It's so strong. ”

Yoo Hyuk was surprised and quietly took out his mobile phone.

Computing with the human brain is not an easy task to complete, and it always takes a certain amount of time to think, but it may only take a moment to calculate it with software on a computer.

Unfortunately, there are many similar solution software on mobile phones now, and there are even software that can be solved immediately by taking a photo.

"See if you have my software fast?"

Yoo Hyuk quietly took a photo, and the software automatically planned the Sudoku diagram on the photo, and after he pressed the button......

Hey, there's no answer?

Yoo Hyuk changed color slightly.

Wrong.

According to his experience in not being able to answer the answer in the past, as long as you enter the Sudoku number, this software should be able to solve the answer instantly, the Sudoku game website he plays, from the beginner level, entry-level, beginner to advanced to super advanced, and mild ash level to the last heavy ash level, the total difficulty level is divided into 9 levels, and even if it is 9 levels of difficulty Sudoku, it can only be solved in an instant.

But...... Looking at the prompt on the software "being calculated", Liu He was a little stunned, and his expression was suddenly solemn, the computing power of today's smartphones is definitely not weak, and the number game of computing cannot be calculated in a short time, what does this mean?

Sudoku with a level of 9 difficulty, the extremely powerful god on the website can solve it in one minute and fifty seconds, but it is an instantaneous effort on the mobile phone. So if the software prompts Sudoku as "being calculated", isn't it already beyond the difficulty level 9?

How long will it take for someone else to do this?

It can be seen that the difficulty of the fourth-sided Sudoku game makes the masked man in front of him feel tricky, not as quick as before to be able to solve it, everyone has already felt that something is wrong, not to mention anything else, just say that the cube on the table is emitting a faint blue light, no matter how you look at it, it will not be regarded as a simple digital electronic product.

Somehow, the atmosphere gradually became solemn and tense, and some people sensed that something was wrong and began to run out in panic, even the manager seemed to understand something, and his legs were trembling, "No, it won't be...... It won't be true......"

"Manager, what are we, what are we going to do?"

The clerk and the crowd of onlookers unconsciously took a few steps back, and they were farther away from landing.

"Take all, all the guests, all away...... Komatsu, you, you hurry up and call the police. ”

The manager's teeth chattered, if this was really a matrix game on TV, then wouldn't they be caught up in it?

This is the same as people being able to talk and laugh about the tragedy of the Middle East battlefield, and being able to think that it is just a distant conversation point for the people who were slaughtered, but if this kind of battlefield and this kind of tragedy really involves themselves, no one can laugh.

Things that used to feel incomparably distant suddenly happened in front of me, which is too much, too much.

Fifty seconds!

Lu Li got up and began to write numbers on the white paper, and when he finished writing, he began to fill in the fourth side of the cube.

Liu He was one of the few people in the crowd who dared to continue to approach Lu Li, and when he saw the mysterious masked man start filling in the numbers, he looked down at his mobile phone ...... "being calculated", and couldn't help but change color slightly.

Oh no, he's going to fill in the wrong one, and the software hasn't even figured it out......

Just as Lu Li was almost filling in all the blanks, the answer also appeared on Liu He's mobile phone.

"How, how is that possible?"

Same!

What are you kidding, it took the mobile phone more than a minute and ten seconds to solve Sudoku, and the man in front of him only took fifty seconds, which is twenty seconds faster than the mobile phone!

Fifth side!

XXXXXXX12

XXXXXXXX3

XX23XX4XX

XX18XXXX5

X6XX7X8XX

XXXXX9XXX

XX85XXXXX

9XXX4X5XX

47XXX6XXX

And when it came to the fifth side, Yoo Hyuk continued to use the mobile phone again to solve the violent calculation, but after a minute and ten seconds, the mysterious masked man had already come up with the answer, and he continued to look dumbfounded at the phone was still being calculated, this time the phone obviously encountered a problem, even if it was a minute and thirty seconds, there was no intention of stopping.

"Do you mean ......?"

Liu He is not unheard, Sudoku games are ever-changing, and the difficulty is not said to be the most difficult, but only more difficult, in the past he has participated in the discussion between the great gods in the forum, is there the most difficult Sudoku? These great gods have calculated some Sudoku with amazing difficulty, even if they use computers, some of them have not been calculated for half an hour.

And what's even more terrifying is another kind of Sudoku......

Side 6!

No solution!

The software prompts no solution!

"No ......"

Liu He's hand trembled, and he almost didn't throw the phone out, he had already thought of what level of Sudoku problem this was, not to mention that the mobile phone APP was unsolvable, even if it was to use a supercomputer, it could only be solved for the time being.

Seven years ago, the Finnish mathematician ARTO used a specially programmed program to create the world's most difficult Sudoku in three months.

It's a puzzle that even Sudoku software can't solve, and the difficulty has increased to the point where it can be solved, and it depends on luck.

If you're lucky, you can fill in a few numbers with a pat on your head, and you'll really be able to solve it, but if you're unlucky, you won't be able to solve it in your life. In fact, the reason why it is said to be luck is precisely because it is not unsolvable, but there is really an answer, so some coincidences can be solved by luck.

The sixth side of Sudoku in front of me, the software prompts no solution, and it is obvious that I have encountered this Sudoku that can only be done by luck.

Of course, it is not excluded that there is a great god who can spend more than ten days and make a certain inspiration. If you don't encounter a situation of inspiration, then it is not surprising that you have not been able to solve it, or this is the norm.

Finnish mathematicians dared to openly solve the problem for Sudoku enthusiasts all over the world, of course, they had a strong self-confidence, and forced Sudoku enthusiasts to re-improve the algorithm of software programming, and it took more than 24 hours to crack it, and human beings must have a considerable element of luck to solve it.

But......

The Sudoku announced by Finnish mathematicians is not the most difficult, there are theoretically countless Sudoku that are more difficult than it, and the software algorithms that are not specially improved, and even the supercomputers are brought in, which is also "really unsolvable", and it is normal to solve the algorithm in a few hours.

However, the remaining time of the land is ...... There are only 51 minutes left.

Five "Doom Stars", one has not yet been cracked.

The final survival time of 24 million people is also synchronized at 51 minutes.