Conan's All-Member Force Enhancement Plan

When Dr. Agasa heard Mamiya Mitsuru's praise, he scratched his head in embarrassment and said, "Actually, it wasn't me who found it. It was the kids who were so good."

Mamiya Mitsuru was about to compliment him a few more times when the old lady sitting in the main seat spoke up: "In that case, I wonder if the guests have solved the puzzle?"

Dr. Agasa smiled awkwardly: "Well, I..."

“Chessmen lined up in the yard.”

Edogawa Conan and Haibara Ai said this at the same time.

The others looked over immediately.

Edogawa Conan was stunned for a moment. He didn't expect Haibara Ai would say this.

While Edogawa Conan was distracted, Huihara Ai expressed her speculation: "If the person who designed the chessboard in the yard is the one who buried the treasure, then the chess piece must contain a way to solve the puzzle."

When the old lady heard this, her hands couldn't help but tremble slightly, and she could hardly suppress the fanaticism and urgency in her eyes: "So, have you solved the puzzle?"

Si Xuanyu drank a sip of juice and said in a cold tone: "Some things will make you happier if you don't know them."

The old lady's eyes immediately turned to Si Xuanyu: "Did you untie it?"

Si Xuanyu smiled: "I can tell at a glance. Is that difficult?"

The mystery of Mamiya Mitsuru and Mamiya Takato that has not been solved for four years: …

You really deserve a beating.

Edogawa Conan also pursed his lips. Although he had an idea, it was not to the point where he could see it at a glance, and he didn't even see Si Xuanyu studying the chessboard.

Is it true that my reasoning ability is not as good as that of Si Xuanyu?

uncomfortable.

The old lady didn't care about anything else and kept asking, "Where is the treasure? What's the answer to the puzzle you solved?"

Si Xuanyu wiped his mouth slowly and said, "Are you sure you want to know, Ms. Nishikawa Mutsumi?"

Anyway, Edogawa Conan couldn't withstand that stick, and Si Xuanyu was not very interested in the subsequent secret passage chase scene.

Besides, with me here, there is no chance that this group of people will be knocked out or chased down in the secret passage.

So Si Xuanyu decided to push the progress forward and harvest a little world consciousness by the way, which is better than nothing.

The old lady, no, it should be Mutsumi Nishikawa who is pretending to be the old lady.

Nishikawa Mutsumi was slightly dazed when she heard this long-lost name, but she immediately reacted: "Who are you calling? I just want to know the answer to the mystery left by my husband."

Si Xuanyu looked at Xichuan Mumei and said, "Tsk, tsk, tsk, you've been pretending for too long, have you even forgotten your true identity?"

Nishikawa Mutsumi clenched his hands tightly under his sleeves, his veins popping out, and his face was still full of confusion: "What are you talking about? Did you solve the puzzle? Ah Man! Is this the person you invited back? My daughter hasn't come back yet? Why did she ask you to bring people back to bully me like this?"

Mamiya Mitsuru and Mamiya Kini looked around and realized something from Si Xuanyu's words, and didn't know what to say for a moment.

When Si Xuanyu mentioned Nishikawa Mutsumi's name, Edogawa Conan guessed what Si Xuanyu meant. He frowned. If this old lady was an imposter, then the real old lady must have been murdered. People here said that the old lady had not left the castle for a long time, so the body must still be in the castle.

If you were to ask the best place in this castle to hide a corpse...

Edogawa Conan immediately became serious: "Mr. Mamiya, I think we need to search the secret passage. There may be something unknown in it."

Si Xuanyu ignored Edogawa Conan and tilted his head to look at Nishikawa Mutsumi: "Your daughter? Are you talking about the lady of the main family of this castle who was killed by you and who is still alive in the world instead of her mother?"

Mamiya Mitsuru and Mamiya Takato nodded and immediately asked the servants to search together.

Nishikawa Mutsumi knew that she could no longer hide her secrets, but she had no intention of running away or hiding. Instead, she continued to ask persistently: "Did you solve the mystery? Where is the treasure?!"

Mutsumi Nishikawa was obsessed with the mystery of the so-called castle to the point of obsession. She was originally a young woman in her prime, but in order to get the most precious treasure in the mouth of the old master, she had plastic surgery to transform herself into an old woman, confined herself to this castle, did not step out of here for four years, and killed dozens of people.

Mutsumi Nishikawa's mentality had long been abnormal. Obtaining that treasure had become the ultimate goal of her life, carrying all her expectations.

This was also the reason why when she met Si Xuanyu and others at the door before, even though Si Xuanyu had said that her legs were healthy, she still let them enter the castle to solve the puzzle.

Si Xuanyu's lips curled slightly: "You really don't listen to advice. I told you it's better not to know. When you don't know, at least you can still keep a thought in your mind."

Nishikawa Mutsumi didn't want to hear it. Although she realized what Si Xuanyu was hinting at, she refused to accept it: "Where! Is! the! treasure!"

Si Xuanyu shook his head: "Alas! It's hard to persuade the damned ghost with kind words. Well, if you want to know, go and see for yourself. Turn right and there is a portrait of the old man at the corner of the staircase. Climb up and you will solve the mystery."

When Nishikawa Mutsumi heard this, he immediately drove his wheelchair towards the place Si Xuanyu said.

In fact, Mutsumi Nishikawa's legs are very healthy, but habit is a terrible thing. After so many years of using a wheelchair, Mutsumi Nishikawa has forgotten to use her legs in places where a wheelchair can pass.

Mamiya Mitsuru and Mamiya Takato hurriedly chased after him. They didn't quite understand what was said, but they definitely understood where the treasure was hidden, so of course they followed to take a look.

Si Xuanyu and his friends also followed, but Si Xuanyu was not as anxious as Edogawa Conan and the others.

The children of the Junior Detective Team were still curious about how the puzzle was solved. As a mystery enthusiast, Edogawa Conan immediately shared the puzzle-solving process: "The arrangement of chess pieces is usually recorded using the English letters A to H and numbers 1 to 8, so looking at the entire chessboard from the direction of the knight is the most correct orientation.

From this perspective, reading the white chess pieces in order is E, G, G, H, E, A, D. Egg head refers to intellectuals who can only speak crooked logic.

That's right, the answer to the code is the master who thought of this puzzle. Next, if you rotate the black chess piece to the right, the entrance to the puzzle will appear. "

It’s true that the wheelchair was moving quite fast. Of course, it might also be because Mitsuru Mamiya and Takato Mamiya hadn’t run for a long time and lacked exercise, and the legs of the Young Detectives were too short.

Anyway, Mutsumi Nishikawa successfully became the first person to reach the portrait. She turned the portrait away and saw an entrance with a ladder.