"Do you have a USB stick? I'm done out and want to print it out and prepare for their exam tomorrow. Su Chen handed the laptop to Wang Wenyun, who was at the service desk and didn't know what he was busy with.

"So fast?" Wang Wenyun was a little surprised, but she was soon relieved, she thought that Su Chen had downloaded the test paper on the Internet, and it was completed by changing a few data casually.

"There is a special photocopy room in the school, you can take it to print it for them, the school photocopy room has a special mailbox, you log in to the school's teacher system, use your account to send your test papers to the school's photocopy room, indicate how many copies you want to print, and then you can go directly to get it." Wang Wenyun explained to Su Chen the use of the school teacher system.

Huacheng Experimental Middle School has its own independent teacher system, and in order to maintain confidentiality, it has established an internal mail system for the transmission of documents and information between internal teachers. This email system is mounted on top of this teacher system.

"Well, I'll take a look." Su Chen suddenly realized that he knew that the school had a teacher system, but he didn't usually use this thing at all, and he didn't pay attention to this thing when he recorded the account password.

Su Chen opened the school's teacher system, entered the account and password to log in, first inquired about the number of students in the first class of the third year of high school and the eighth class of the third year of high school, and finally found the mail system in the system, and sent a test paper to the school's photocopy room, indicating the number of copies and the time of use.

Returning the computer to Wang Wenyun Su Chen left the library with the books, he planned to go back to the office of the sports department, after all, it was his office location, and it was not a matter if he didn't go back.

Walking on the tree-lined path of the campus, Su Chen was a little in a trance, the afternoon sun was still quite strong, but fortunately there were trees to cover it.

"Smack, I'll eat!"

Su Chen, who was walking on the silent tree-lined path, suddenly heard this voice, and his curiosity was troubled, so he couldn't help but follow the sound, which came from behind a small tree on the side of the tree-lined path.

Because of the trees, Su Chen couldn't see the scene behind him, but there was a cobblestone path on this tree-lined path that connected the grove.

Su Chen walked to the end of the cobblestone path, looked up, and saw that behind the grove was a different world, there was a small pond, in which water lotus was planted, and there was a platform on the edge of the pool, and there was a small pavilion on the platform. There is a stone stele on the side of the platform, and the stele is engraved with three big characters of "Star Picking Platform".

Looking up, the previous voice should have come from the two people sitting in the pavilion.

Su Chen held the book and walked through the small pool, there were still many goldfish in the pool, he didn't expect that there was such a small world on this campus.

Ascending to the star-picking platform, Su Chen saw the people in the small pavilion clearly.

It was two old men, one of whom wore gold-rimmed reading glasses, gray hair, and a gardener's outfit. It's really a gardener's suit, not the kind of campus gardener who praises the teacher, but the kind of one-piece gardener who cuts flowers and plants, and a straw hat on the chair next to him. The image of a flower gardener is alive.

The other old man looked much more normal, with casual clothes and jet-black hair, but the age spots on his face betrayed his age.

The two old men were playing chess, Su Chen also walked into the pavilion, the two old men heard the movement, raised their heads, and saw that the person who came was a young man they didn't know, and they lowered their heads and continued to look at the chessboard without speaking.

When they usually play chess here, from time to time some students will come to watch chess, and they are not surprised, just when Su Chen is also an idle student who has nothing to do, he comes to watch chess.

Su Chen stepped forward and looked at the chess game, as if it had only been open for a long time, and most of the chess pieces on both sides were there. Su Chen took out his mobile phone and looked at the time, he only had a class in the second period in the afternoon, and now he still had a lot of time, so he simply stayed to watch others play chess.

Su Chen also likes to play chess, because Su Chen feels that playing chess is a process of deduction, what impact can each move cause, and the other party will take that move to counterattack you, there are many possibilities back and forth, and each possibility will produce a different situation, which rises to a problem of probability.

It's as if someone has now developed a robot that uses data calculus to play chess with professional Go players and chess players. Su Chen was also a little interested, so he stood by and watched.

Su Chen stood next to him for ten minutes, because he didn't know whether the red chess pieces would go first or the green chess pieces would go first, and Su Chen didn't dare to ask the two old men, because Su Chen still knew the truth of the true gentleman who was silent when watching chess.

So Su Chen stood next to him for ten minutes, assuming that the red chess pieces went first, and then Su Chen's brain began to calculate the direction of the chess game, and every move was calculated, how the green chess pieces should fight back. Finally, through the calculus, if nothing goes wrong, the red piece that has mastered the first move will win the game.

Calculating the situation of playing the red chess pieces first, Su Chen's feet were a little numb, and he found that the two old men had not moved, from Su Chen's appearance to the present, the two old men had not taken a single step, and the old man in the gardener's uniform was holding the red chess pieces. I saw that his right hand was on his thigh, his thumb and index finger kept rubbing his chin, and his left hand was motionless on the table, as if he was thinking.

"Isn't it red that moves first? Otherwise, the result of my calculation is that red has a high probability of winning, and this old man can't have thought about it for so long. Well, it must be so, then it should be the green piece that moves first. Su Chen stood for a few more minutes, and found that the old gardener had not moved, and thought to himself.

Su Chen put the book in his hand on the stool next to him, and found an empty stool to sit down, Su Chen's legs were really a little numb, so he had to sit down.

After sitting down, Su Chen began to re-deduce the situation where the green chess pieces went first, and more than ten minutes had passed since this deduction, because the green chess pieces had one less "horse" than the red chess pieces, and the red chess pieces had a little more room to choose.

Finally, Su Chen finished deducing, and in the end, Su Chen came to the result that the probability of winning the green chess piece was about 40%, which was still smaller than that of the red chess piece.

No wonder this black-haired old man has to think about it for so long, it turns out that the winning rate is relatively low.

I saw an old man with black hair, holding two eaten chess pieces in his left hand and constantly coiling, and his right hand resting on the table to support his chin, looking engrossed.

In the case of the chess pieces on both sides taking the lead, Su Chen finished calculating the results. The two old men hadn't moved yet, and Su Chen could only sigh that he was getting old, and his thinking ability had declined, and he might think a little slower than the young man.

Time passed minute by minute, the two old men had not moved, Su Chen was a little unable to sit still, and at the same time admired the concentration of the two old men, if it was himself, I am afraid that he would have been unable to sit still, it seems that the word young and vigorous is really good, if one day he can do it so calmly and calmly, it is estimated that he will really be able to do things without being surprised.

"Who's the turn?" At this time, the gardener dressed the old man and spoke.

"I don't know!" The black-haired old man also said.

Hearing the conversation between the two old men, Su Chen slapped himself on the head, almost vomiting blood, feeling that he had been sitting with them here for more than half an hour, and they actually forgot whose turn it was.