Class 1-B's Great Operation!

From Detective Conan Wiki
Episode 460
(Int. Episode 500)

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!)
Original airdate: January 15, 2007
March 26, 2011 (Remastered version)
Broadcast rating: 9%
Remastered rating: 9.3%
Manga case: #158
Season: 15
Manga source: Volume 53: Files 5-6 (548-549)
Cast: Conan Edogawa
Ai Haibara
Detective Boys
Sumiko Kobayashi
Chiharu Matsubara
Kamen Yaiba
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
Character design: Mari Tominaga
Keiko Sasaki (sub-character)
Kumiko Shishido (design works)
Production cooperation: Studio Elle
Opening song: Kumo ni Notte
Closing song: Shiroi Yuki
Prev episode: « A Mysterious Man - Overly Strict with Regulations
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List of episodes

Class 1-B's Great Operation! (1年B組大作戦! Ichi-nen B-Gumi Daisakusen!?) is the 460th episode of Detective Conan anime.

Characters introduced




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.


  • Resolution


    • In this episode, Conan doesn't explain the code resolution, only the culprit's motive.
    • Takuma Sakamoto was hurt shortly after school began, and was only able to return to class in October.
    • In this case, Haibara stated that in their last health check, she and Ayumi were about the same weight and height.

    Remastered version

    A remastered version of this case was aired on March 26, 2011, due to production delay for episode 610 caused by 2011 Tōhoku earthquake.


    In other languages

    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
    Flag of Thailand Thai ปฏิบัติการครั้งใหญ่ของ ป.1 ห้อง B! Class 1-B's Great Operation!
    Flag of Vietnam Vietnamese Hoạt động ngoại khóa của lớp 1B! Extracurricular activities of class 1B!

    See also

    Episodes of Season 15
    Episode 427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465