The mastermind behind this case is the old lady of Masudai, to be precise, Mumi Nishikawa, she is the maid in the castle, she personally created the fire four years ago and faked her death, and then plastic surgery into the old lady of Masudai, the purpose is to steal the treasure mentioned in the last words of the old lady of the palace.

This cyan castle case can also be regarded as one of the childhood shadows of the "Conan series". Conan, who is the main character, is missing most of the time, Dr. Asa and the Boy Detective Team disappear one by one, coupled with the gloomy and terrifying atmosphere of the castle at night, it is believed that many children have nightmares after watching this episode.

But now that I think about it, there are actually many doubts in the animation that have not been fully explained.

Question 1: As a historian, why did the first owner of the castle have so much money that allowed him to buy the castle abroad? Even if the average person bought the castle, why didn't he settle down there or go to live in the castle when he was on vacation, and had to go to great lengths to transport the castle back to Japan and reassemble it?

Suspicion 2, Master Man and the noble young master, the two lived in the castle for four years after the fire, whether it was investigating the hidden circumstances of the fire or looking for the treasure in the last words of the palace master, why couldn't they find the secret passage in the castle? You know, there are not only one or two mechanisms in the castle, as long as there is enough time, even if it is inadvertently triggered.

For four whole years, the two of them did almost nothing!

Suspicion 3, "Zengdai Old Lady", the poor and hateful woman, Conan deduced her experience of plastic surgery abroad many times based on her inadvertent remarks that she was "used to the change in the size of her passport".

If you want to talk about the country with the most powerful plastic surgery technology, people may think of South Korea. But in fact, Japan's plastic surgery technology is more powerful than South Korea's, and if Korean plastic surgery technology is compared to standard assembly line production, then Japan is privately customized.

Miss Nishikawa did not have plastic surgery in Japan, obviously to avoid people's eyes, although the plastic surgeon has a duty of confidentiality to each client, but the case of plastic surgery as an old woman will definitely become a topic of conversation in plastic surgery circles.

It is unlikely that the "old lady of Zengdai", who is paralyzed in both legs and needs a wheelchair, will disappear from the villa for too long, and considering the length of each operation, South Korea, which is only a little more than two hours away from Japan, is her only option.

So the question is, when Miss Nishikawa first had plastic surgery in Korea, who did she take a round-trip flight?

Although Japan and South Korea do not require an ID card to fly on a plane, a passport is an essential thing, and how did Miss Nishikawa's two completely different faces before and after plastic surgery pass through the security check at the airport?

The first thing Xingchen thought of was to take Matsuyo Masudai to South Korea, kill Masudai Masudai in South Korea, and then use the face of plastic surgery to return to China with Masudai's passport. But in fact, Madame Masuyo has not left the castle for at least ten years, and her remains were also found by Conan in the secret passages of the castle.

This is the fourth suspicion, why did Nishikawa Mumi just throw her body in the secret passage after killing her old lady.

The castle is surrounded by a large area of untouched forest, and it is easy to find a burial ground. Mumi Nishikawa often needs to enter the secret passage to find treasure clues, and how strong her psychological quality is to allow the corpse to rot into white bones in the secret passage.

It all seems so deliberate, and there seems to be a bigger mystery behind it!

Thinking of this, Xingchen couldn't help but get excited.

As the gardener leads the group to a room on the second floor of the villa with a panoramic view of the garden, Sage quietly takes out his phone and sends a text message to Twilight, asking Twilight to send her all the entry and exit records of everyone in the castle villa for the past twenty years.

That's the benefit of having a dad who is a section chief in the Metropolitan Police Department.

After everyone reached the room on the second floor, facing the chess sculptures in the garden, Conan took out the notebook he had with him and began to draw the layout of the chess pieces in the notebook.

From the second floor of the castle, a meadow in the garden is trimmed into a deep and shallow chessboard, on which the black pieces of chess are arranged in a capital "G", and the white pieces are scattered irregularly around.

"Obviously! This is not an endgame!" Xingchen pointed to the pattern on Conan's notebook, then took out his mobile phone and searched for the resume of Mamiya Tai Ye on Google, and said: "The famous historian Ma Miya Tai Ye does not have any record of chess matches on his resume, and it is obvious that he is not proficient in this way." ”

"If you exclude the rules of chess, this pattern alone seems to be the letter 'G'. Then Xingchen shook his head again and denied his reasoning, "But that's not the case! Conan, if you think that this will mislead me into reasoning, you would be naïve!"

Conan was secretly surprised, although he had the idea of being suspicious in the reasoning competition, but he hadn't had time to implement it, could Xingchen see through his thoughts?

"The 64 squares of the chessboard 8 times 8 by 8 are not as clear as those of Chinese chess, but in fact you can still see the position of the two sides of the game, that is, the white square is used as the benchmark in the lower right corner, so the pattern of Conan should be rotated 90 degrees. Then the letter 'G' looks more like a counterclockwise rotation. ”

Since there are plots of playing chess in many Japanese comics (Lelouch, blank), Xingchen has specially learned about chess, but only to know the rules, and has not played against others.

Although Xingchen knew that the mechanism of the treasure was a giant oil painting of the old man of the palace that rotated counterclockwise, he could not remember the specific reasoning process, as if he could not remember the names of the people in the villa.

The police have blocked the news of the fire four years ago, and the names of the victims of the fire have been changed in all relevant newspapers and magazines, so Xingchen only asked Twilight to investigate their entry and exit records after coming to the castle villa.

Not to be outdone, Conan responded to Xingchen's decipherment of the meaning of the sunspot: "The position of the white piece is not irregular! On the 8x8 chessboard, there is only one white piece in each row, and according to the line of the chess game, the white piece should mean egg_head!"

"Egg head?" Xingchen knew the separate meanings of the two words, but it didn't make sense to connect them together.

"It's slang, it means nerd!" explains Gray Yuan, who lives in the UK all year round, "People in English-speaking countries think that people who are good at reading will lose their hair because of excessive use of their brains, and they are generally bald, very similar to egg shells." ”

This is what people often say about being bald and getting smarter!