Class 1-B's Great Operation!

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Episode 460

TV Episode 460.jpg

Title: Class 1-B's Great Operation!
Japanese title: 1年B組大作戦!
(Ichi-nen B-Gumi Daisakusen)
Broadcast rating: 9%
Remastered rating: 9.3%
Manga case: #158
Original airdate: January 15, 2007
March 26, 2011 (Remastered version)
Season: 15
Manga source: Volume 53: Files 5-6 (548-549)
Cast: Conan Edogawa
Ai Haibara
Detective Boys
Sumiko Kobayashi
Case solved by: Conan Edogawa
Ai Haibara
Detective Boys
Next Conan's Hint: Eye of a die
N/A (Remastered version)
Director: Masato Sato
Organizer: Hisako Tsuji
Storyboard: Hisako Tsuji
Episode director: Takahiro Okada
Animation director: Keiko Sasaki (chief)
Katsutoshi Kobayashi
Opening song: Kumo ni Notte
Closing song: Shiroi Yuki
Prev episode: « A Mysterious Man - Overly Strict with Regulations
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Characters introduced[edit]




The teacher of the Detective Boys decides to give the class a mental test. Conan is called by the teacher so the class must solve it without him. They solve it with the help of two silent out-casted students. It turns out it was a plan to include the new students so they feel more involved.

The code contains numbers were assigned to members of the class: Mitsuhiko got the 1, Ayumi the 2, Conan the 3, Maria Higashio the 4, Genta the 5, Takuma Sakamoto the 6. Genta's number was the only one to be red. The students then found a paper with dice numbers, in the order 3-1-6-2-4-5, the 1 being the only red. As Conan was called out, Haibara had to play Conan's role to make the students work together to solve the code and called his name whenever Conan's name is mentioned in the solving process.




  • Conan gets wrong about stroke order of the kanji for "woman".
  • In this episode, Conan doesn't explain the code resolution, but only the "culprit"'s motive.

Remastered version[edit]

A remastered version of this case was aired on March 26, 2011.


In other languages[edit]

Language Title Translation
Flag of Catalonia Catalan (Catalan dub) La gran operació de 1-B 1-B great operation
Flag of Italy Italian Gli indizi della maestra The teacher's sign

See also[edit]

Episodes of Season 15
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