Chapter 276 Four Color Theorem.

The scene in front of Zhou Zhen turned into a blacksmith shop again.

The tops of the mulberry trees were staggered into the outline of distant mountains, and the grayish layout was around, like some kind of fence with smoke.

In the vast yard, the smell of the furnace was blazing, and the remaining warmth was still seeping into the coldness of winter.

Ding Ding Ding... The lingering sound of the ironwork spread, slowly fading like ripples.

The "Four-Dimensional Utopia" and others who had just talked to him had disappeared.

Zhou Zhen looked down at his current body. In his vision, he had now restored his body in 2127. This was a healthy adult body with normal nutrition and sufficient strength.

However, he was still wearing Bobo's clothes.

Because the homespun brown was too small and too worn, and had no elasticity, it was squeezed even more ragged by the enlarged body at this moment, and was damaged in many places. It could only barely cover the important parts of the body.

At this time, the old blacksmith strode forward. Behind him, footsteps were clattering. Many villagers rushed in from outside the yard, holding various farm tools in their hands, and surrounded Zhou Zhen with murderous intent.

The old blacksmith stared at Zhou Zhen with deep eyes and said coldly: "Go!"

All the villagers immediately started running, turning the blades of the farm tools upside down, and charging towards Zhou Zhen.

This scene was very similar to the previous situation.

Zhou Zhen did not hesitate, and did not care whether he was still trapped in the "ring". He raised his hand directly, and a dozen black and red cubes appeared in front of him in an instant.

Boom boom boom boom...

The battle ended very quickly in the deafening sound.

Zhou Zhen quickly cleaned up all the ordinary villagers.

He then used [Plane Jump], appeared in front of the old blacksmith, stretched out his palm, pressed the old blacksmith's arm, and at the same time, launched [Zero Distance Fear].

Suddenly, a great sense of fear rolled over the old blacksmith like a raging sea, engulfing his mind.

The old blacksmith stood still, his pupils slightly dilated, his limbs weak, and the intense fear seized his consciousness, and for a moment he could not think of any resistance.

Zhou Zhen looked at him and asked calmly: "Has everyone in this village contracted the 'plague'?"

"Is Ji Li, the youngest son of the village chief, the first to contract the 'plague'?"

The old blacksmith opened his mouth and replied in a very weak voice: "Yes, yes..."

Hearing this, Zhou Zhen frowned slightly, it was indeed the case!

Thinking of this, he was about to continue asking questions, and the old blacksmith's head suddenly exploded!

Boom!

Red and white blood rain was scattered all over the sky, and the fishy and sweet smell was instantly strong.

Looking at this familiar scene, Zhou Zhen thought he was going back to the origin of the "ring" again.

But at this moment, the blood and brain matter after the old blacksmith's head exploded immediately turned into dense numbers, graphics, symbols, formulas... like fine raindrops, silently blending into the surrounding environment.

The next moment, everything around him suddenly changed dramatically.

The entire yard, along with all the things inside, was filled with four colors: red, white, gray, and black.

A gray block appeared under Zhou Zhen's feet, and he saw that his body was also dyed pure gray in an instant!

There was a red color in front of him, separated by three blocks, and an old figure emerged in the red block, which was the old blacksmith.

The old blacksmith was intact at this moment, and his body was also dyed red!

Zhou Zhen quickly glanced around. At this moment, all other colors in the yard of the blacksmith shop faded away, leaving only red, white, gray and black. They staggered and divided the entire scene. The boundaries between colors seemed to be the gaps between countless irregular puzzle pieces, as if turning this place into a 3D puzzle toy.

The number of puzzle pieces was difficult to count at once, but no matter how cracked they were, each color block was surrounded by other colors, and there was no same color adjacent.

Is this... [Four Color Theorem]?

Zhou Zhen was stunned. [Four Color Theorem], also known as the Four Color Problem and the Four Color Conjecture, is one of the three major mathematical conjectures in the world.

This problem was proposed by British student Francis Goodry in 1852. Historically, famous mathematicians including Alfred Kelly and Peter G. Tait have tried to solve this problem.

Finally, in 1976, American mathematicians Cornelius Appel and Walter Hanke used electronic computers to prove the [Four Color Theorem].

This is also the first mathematical theorem that relies mainly on computer-assisted proof.

Its content is that on a plane map, countries with common borders can be marked by using four colors to ensure that every two adjacent countries are painted with different colors without causing confusion. In other words, for any plane map, as long as there are no more than four colors, a color distribution method can be found so that the color matching of any two adjacent areas is different.

The adjacent areas referred to here refer to areas with a whole section of the border being common. If two areas only meet at one point or a finite number of points, they are not called adjacent. [Note]

Now, the "ring" seems to have disappeared, but this [Four Color Theorem]...

This is a "digital forest"!

※※※

The coffin shop with dim light, cold and dampness instantly turned into a village with intersecting roads and scattered earthen houses.

At this moment, the door was wide open, footsteps were chaotic, and the villagers poured out of the thatched house like a tide, grabbing shoulder poles, hoes, rakes... and surrounded the observers and others.

The "Crown Sculpture" of the "Four-Dimensional Utopia" stretched out two fingers, gently pinched the air in front of him, and seemed to have caught an invisible thread.

Then, he gently pushed the invisible thread to the left.

Step, step, step...

The villagers who rushed up all passed through the left side of the five people without looking away, and went straight to the empty target. The farm tools that were originally smashed at the five people also fell on their left side, ping-pong... The smoke and dust from the smashing on the open ground were everywhere, and all the attacks could not touch the five people at all.

The villagers who rushed over immediately found the problem, turned back immediately, picked up the stones and soil on the ground, and smashed them at the five people with all their strength.

The stones and soil clods whistled through the sky, and when they were about to hit the five people, their trajectory suddenly bent against physics and fell on the left side of the five people again.

Looking at this scene, the observer immediately looked at the "Crown Eagle" and asked in a low voice: "This is the 'dimensional line', are you also an experimental subject?"

The "Crown Eagle" did not answer this question and walked directly in the direction from which he came.

The other two members of the "Four-Dimensional Utopia" immediately followed.

Sami Draxler looked at the direction where the "Crown Eagle" and the other three left, then looked at the observer, bowed elegantly to the observer, and then walked in the direction of Zhou Zhen just now.

The observer stood there alone. Just as he was thinking about where to find "Ares", the dimension of this area had returned to normal, and the villagers who were shouting and killing immediately rushed towards him.

The observer did not hesitate, and his figure disappeared directly from the spot.

※※※

The courtyard of the village chief's house.

Four colors intertwined, dividing everything.

The real scene at this moment was like a holographic puzzle.

"Ares", who was standing in the red block and was covered in red, roared: "Kill!"

As soon as the words fell, all signs of life of Ji Li, who was standing in the gray block, disappeared in an instant.

His whole body suddenly turned into a ball of pure gray liquid and sank into the gray land under his feet.

"Ares" immediately burst into laughter. Just like Lu Xingkuan and the other four, the enemy in front of him was absorbed by his "Kingdom of God"!

He didn't care who the enemy in front of him was. Anyway, Ji Li dared to blaspheme Him just now, and Ji Li's whole family must die!

However, at this moment, Xin Chun, who seemed to have been swallowed by the [Kingdom of War], suddenly had a violent twitch in his body, and then his face, body, and clothes began to change rapidly, and in a blink of an eye he turned into Ji Li's appearance!

Ji Li had just reappeared, and dense black and red cubes suddenly appeared in the air in front of him.

These cubes seemed to contain tremendous energy, turning into powerful shock waves, blasting towards "Ares".

"Ares" turned his head and looked at Ji Li.

The next moment, the red and black shock waves all turned into a pitch-black color, and then were absorbed by the black block under Ji Li's feet.

Ji Li's whole body instantly became thinner, as if he had been hungry for a long time in an instant.

Soon, Ji Li's originally normal body turned into a shocking skin and bones with clear bones. His breath also weakened rapidly. The remaining strength could not support standing at all. The whole person sank into the black block under his feet like drowning.

This is "famine"!

"Ares" sneered and turned to look at the remaining three figures.

Mrs. Ding's body twitched and soon turned into Ji Li's appearance again.

Ji Li stood in the white block this time. Just as he was about to make a move, a strong smell of illness suddenly emerged from his whole body, as if he had countless diseases, and he was entangled in an instant, so that he could not stand at all and fell directly into the white block.

During the short time when he fell, Ji Li was emaciated and looked very sick. In a blink of an eye, he was swallowed up by the white block.

This is "plague"!

Then, Sui Bai, who was standing in the black block, twitched violently again and turned into Ji Li again.

However, this time, Ji Li's eyes were empty and there were no eyeballs.

He stretched out his arm, reached into the air in front of him, and moved forward little by little, as if he was blindfolded and playing the game of "blind man's touch".

At the same time, the black color that had just been stained on his body dissipated like the ebb tide and returned to normal in a blink of an eye.

Ji Li groped forward step by step, approaching "Ares".

Ta-ta-ta-ta... He quickly walked out of the black block and entered the adjacent gray block.

His body still showed normal color and was not dyed gray.

Ji Li continued to move forward, and the rules of [War God Kingdom] seemed to have suddenly lost their effect on him.

The two sides gradually approached each other, and "Ares" looked at this scene indifferently, with the arrogance between his eyebrows unchanged.

At this time, Ji Li walked out of a white block and entered a red block.

The moment he stepped into the red block, the yard disappeared, the pond disappeared, the hedge disappeared... all the surrounding scenes disappeared.

Ji Li seemed to be suddenly transferred to a red world. The ground under his feet was covered with spider web-like boundaries, dividing the huge ground into various large and small, irregular parts, as if it was a huge map that had not been colored yet.

At this moment, Ji Li was standing on one of the map plates, and this map plate was gradually turning white.

Ji Li had no eyes, so he continued to move forward like a "blind man". When he walked out of the area of ​​the map under his feet and entered another adjacent map, the adjacent map was also dyed white.

The same color appeared on two adjacent maps, and Ji Li returned to the starting point instantly.

At the same time, all map sections were instantly painted in four colors: red, white, gray, and black. Each color was intertwined with each other, and there were no adjacent ones of the same color.

The color block under Ji Li's feet was painted gray again, and his body was dyed pure gray in an instant!

※※※

Yue's Blacksmith Shop.

Zhou Zhen and the old blacksmith faced each other across the color block. The old blacksmith said in a cold voice: "Kill!"

As soon as the words fell, all signs of life on Zhou Zhen's body disappeared without a trace in an instant.

He fell directly to the ground, his life was cut off, and his thinking began to stop.

In a daze, he seemed to have arrived in a colorful and extremely cheerful amusement park...

At this moment when the last trace of reason was about to disappear, Zhou Zhen reflexively focused all his attention on a set of formulas in his mind.

The next moment, his entire body disappeared from the gray color block and appeared in a black color block five or six color blocks away from where he was just now.

The moment he entered this black color block, Zhou Zhen's vitality was restored instantly, but as the old blacksmith glanced at him, his body immediately withered away quickly.

The pain of hunger gradually filled his entire consciousness, as if every cell was clamoring for hunger!

Without hesitation, Zhou Zhen used [Plane Jump] again and teleported into a white color block.

The burning hunger in his stomach disappeared instantly, but his body seemed to become heavier all of a sudden. The feeling of illness swarmed in, and his internal organs were filled with pain. It seemed that he couldn't live for even a second!

"Gray is 'death'; black is 'hunger'; white is 'disease'..."

"No!"

"The correct terms should be 'death', 'famine' and 'plague'!"

"These are the four horsemen in the Bible Revelation..."

"The red at the end should correspond to 'war'!"

"'Death', 'Famine', 'Plague' and 'War'!"

"'war'……"

“This is not the ‘digital forest’ of this village!”

"This is the experimental subject of the 'Twilight Trial', the 'Digital Forest' of the God of War 'Ares'!"

【Note】K.Appel, W.haken.Scientific American[M].1997.237, Issue 10.

In Chapter 171, Ares's four colors were changed from red, blue, green and black to red, white, gray and black.

This chapter originally didn’t need to take so long, but when Latte was doing the settings, he didn’t know if he was out of his mind or something, so he set up this four-color problem for Ares’s digital forest...

Yesterday and today, most of the time I was drinking latte, I was basically thinking about this four-color problem.

How can we reasonably turn the four-color problem into a digital forest?

How should I write it so that it fits the setting of God of War?

What should the protagonist do to unlock the digital forest of the four-color problem?

I read a lot of information, read a lot of popular science, and did a lot of coloring questions. Most of them were useless and a waste of time. Many of them were even incomprehensible...

Now I finally have a general idea, but I am too tired to write. This kind of plot cannot be written when you are tired. It is easy to make mistakes. Latte needs to rest...

That’s it for today, I’m very sorry.

Just lie down and let him be scolded.