The Earth is Online Chapter 161:

Remember [lnmao.org] in one second, fast update, no pop-up window, free to read!

In the dark steel room, all around. A huge blue clock exudes a faint light and becomes a light source. After Truth Clock said this, Fu Wenduo asked the same question as in the previous round, unraveling the truth world's suppression of players. After gaining freedom, Tang Mo walked step by step to the truth clock, and he stood under this huge clock.

At the next moment, Tang Mo reached out his hand and crossed the round of blue light clock.

He touched something steadily, Tang Mo closed his eyes and sighed softly. He raised the corner of his lips and opened the door with a click.

Clear opening of the door rang in the room. At this moment, Zhao Xiaofei and Li Miaomiao were still standing in a dumb face. Even if they could move their feet freely, they looked at Tang Mo's back in a daze. They haven't recovered from the great changes just now.

...... What is the second round of hide and seek game is over? !

They have n’t started the hide-and-seek game yet. They did n’t enter any corridors at all, leaving no footprints. How could the second round of games end?

But Truth Clock did n’t lie, they certainly could n’t win this round of games.

Zhao Xiaofei and Li Miaomiao clenched their lips, thinking hard about what is going on.

Tang Modao: "Sure enough, this staircase is directly opposite."

The crowd immediately recovered and hurried over. No one expected that behind the Clock of Truth there was a small door hidden extremely tightly. After opening the door, Li Miaomiao looked at the scene outside the door and staggered: "This is ... another staircase ?!" As the words fell, Li Miaomiao seemed to remember something, and she quickly ran to the room on the other side. The door, the door they had just entered, opened the door.

The two doors correspond to each other.

Down a staircase, you can directly enter the room of the clock of truth. Don't look back and walk forward along this room. Through another door, you can walk into the second staircase and go upstairs to the second floor.

The Truth Clock ’s room became an intermediate passage, connecting the two stairs together.

Zhao Xiaofei feels like he has grasped the key: "If you want to clear the hide-and-seek game and find Schrodinger, you must find this door?" Judging from Tang Mo's reaction, this should be the case. But she still didn't understand, "Why do we lose now? We haven't even started our second round of hide and seek games."

Tang Mo: "Because when we stand in this room, it means that we can no longer find all the rooms."

Zhao Xiaofei froze.

Two doors were opened together, and two dark stairs reflected in the player's eyes. Schrodinger no longer speaks, but everyone knows that this little black cat with irritated hair must be staring straight at each player in the room with the big green eyes, staring at the silent Blue clock.

Everything is actually very simple.

"In the last round of the game, I asked Li Miaomiao to ask the truth clock a question."

Li Miaomiao recalled: "What I asked is how can we clear this hide-and-seek game."

Tang Mo nodded: "Yes, this is your question. But after the truth clock answered, Heita blocked the answer for the fairness of the game. We did not hear any answer, Heita told us, Truth Clock ’s answer is correct, it did n’t lie, and the question ended like this. ”

Everyone remembers this matter, when they were so angry that their teeth were itchy, and they wished to paste Schrodinger's cat food on Heita's face.

Li Miaomiao: "So?"

The answers are blocked by the black tower. What is the point of this question?

Tang Mo smiled and said: "Heita blocked the answer, but it didn't block the answer, the truth clock said before the answer."

People began to think about what the truth clock said at the time. At this time, a calm male voice sounded: "It says that there is only one way to clear this game."

Tang Mo looked up and Fu Wenduo stared at each other. After a while, he said: "Yes, it says there is only one way to find Schrodinger."

Li Miaomiao is still a bit stunned: "There is only one way, then?"

"Then, this method Black Tower has already told us."

After a while, Li Miaomiao and Zhao Xiaofei said in unison: "Article 7 of the game rules, if you search all the rooms, you can find Schrödinger?"

"Yes." Tang Modao said, "Schrodinger can lie, the truth clock can lie. But the Black Tower never lie. It will only hide the conditions, bury traps, reduce the amount of information of the player, and even mislead the player. But it There is absolutely no way to lie. So there is only one way to clear this game-find Schrodinger in all the rooms, then this problem is simple, this is a stroke problem. But this problem is a bit more complicated, because This castle can never be completed in one stroke. "

Four hours ago, when Tang Mo listened to the black tower to explain the rules of the game and determined that each corridor could only be walked once, he remembered a graphic question he had encountered when he took the civil service examination in the year he graduated from college.

The librarian in Suzhou is a business establishment and requires an exam. The graphic question looked extremely complicated, with four options each staggered. Its requirement is to select the following four figures, which cannot be drawn in one stroke. It took Tang Mo five minutes to select the correct answer. At that time, he felt vaguely in his heart: there must be some theorem in the problem of a stroke.

Tang Mo suddenly thought that if Chen Shanshan is coming to participate in the tower attack game this time, I am afraid this game will be over long ago.

When starting the tower attack game, Tang Mo did not know what this theorem was. When they walked out of the kitchen, looking for Schrodinger and understanding the map of the Iron Fortress, Tang Mo drew various patterns in his heart as he walked, looking for the theorem. After five players walked through the second floor, Tang Mo also discovered this theorem and made an argument by himself. But the problem came suddenly.

This fortress can never be completed in one stroke.

Because it has two stairs.

"Any closed figure, if you want to complete its stroke, you need a prerequisite: among its intersections, there can only be 0 or 2 odd intersections. In addition, as long as this condition is not met , The graphics can never be completed in one stroke. "

Odd intersection point refers to an intersection point where the number of lines it has is odd. Take Schrödinger's steel fortress as an example. When Tang Mo found the second door hidden in the Truth Clock's room, this was an odd intersection. From this point, there are three paths in total: go up the stairs, enter the corridor to the left, and enter the corridor to the right.

After the planet goes online, players ’thinking speed is improved. Although Zhao Xiaofei and Li Miaomiao ca n’t prove this theorem all at once, they thought about several figures in their minds and found that all of them met this theorem.

Zhao Xiaofei said: "If this is the case, there are two stairs in this castle. There are an odd point on each side of the stairs, there are a total of four odd points. It is impossible to finish without looking back All corridors! "

"So, there are two odd-numbered points, which can definitely become even-numbered points." After a pause, Tang Mo glanced at Fu Wen.

When they walked under the second staircase ten minutes ago, Fu Wenduo said a word in Tang Mo's ear. He said that in this position, the Truth Clock ’s room is on their left, right.

The ability to find this hidden door is actually extremely harsh.

First of all, the player must know clearly that there is only one way to find Schrodinger, that is, to search all the rooms. Going through all the rooms means that the player has to play a simple stroke game.

Second, they have to figure out the basic two-story map in the first round of the game. They need to know the theorem of the one-stroke problem. They must find the truth in the second round of the game. Into a viable stroke drawing.

Finally, you need a player like Fu Wenduo who has a strong spatial thinking ability and memory.

Tang Mo has been thinking about how to turn four odd points into two. He would not find that the two corridors actually corresponded, and the room of the clock of truth was sandwiched between them.

All the above conditions are indispensable. Even if the player is not able to ask the question of truth in the face of the clock of truth, but simply wins the question and answer and leaves the room, he cannot find the truth.

Tang Mo: "Odd points are 0 or 2, this is only the first condition to complete the stroke problem. The second condition, our starting point must be an odd point. Our second round of games cannot be casual Go, because in the third round of the game, we have to start the game from a fixed point. Otherwise, even if we find the truth at that time, as long as we do n’t start walking from an odd point, we will not find Schrödinger. "

Tang Mo chose to enter the Truth Clock's room at the beginning, in order to determine the true odd point.

The room of Truth Clock is located at an odd point. This odd point is not really an odd point, so even if their second round of the game has not started, they will not be able to win this game. This is the truth that Tang Mo wanted to know from the mouth of truth clock.

Greia sounded with a smile: "This is Schrödinger's fortress, and of course it can move freely in every room. So it is possible to hide in any player that hasn't entered without searching all the rooms. In the room. Only when you search all the rooms, it dare not cheat ... This game is really interesting, great Lord Schrodinger. "

"Your shameless humans !!!" The little black cat growled. But no one will give it a face.

Knowing how to clear the game, they also found the hidden door. Five players left the room in order to prepare for the next round of the game.

Before leaving the room, Tang Mo turned to glance at the clock of truth.

On the huge Blu-ray clock, I walked in seconds. This clock is like an ordinary clock. As it said at the beginning, it accurately tells the time for the great Lord Schrodinger. Schrödinger only needed it to accurately tell the time, and perhaps not now.

It ’s no coincidence that the truth clock is arranged in this special room.

Tang Mo walked out of the room and shook his head with a smile.

Heita opened her eyes and closed her eyes, allowing Schrödinger to cheat and allow it to act at will in 108 rooms. The black tower will also give the player a hint. The clock of truth is a reminder. If it is not the clock of truth, the difficulty of this game will increase greatly. Tang Mo will not know the real customs clearance method, and Fu Wenduo will not be impressed by the fact that the left and right stairs are corresponding to each other.

The five players walked to the top of the corridor. Li Miao Miaoben wanted to walk more, but Tang Mo stopped her.

Tang Mo raised his head and said, "Black Tower, can we just give up the second round of the game and start the third round of hide and seek?"

The little black cat shouted: "You **** !!!"

Black Tower said in a voice without emotion: "Yes. Please confirm that players give up the second round of games."

Tang Mo: "We give up."

"Dingdong! The second round of hide-and-seek game ends and the player fails. After a ten-minute break, the third round of hide-and-seek game is forced to open."