Brain-Battle Gambit (頭脳戦のディールゲーム Zunō-sen no Dīrugēmu) is the 123rd chapter of the Dr. Stone manga.


In his opening move to convince Mozu to join forces with the Kingdom of Science, Gen performs magic tricks while Senku demonstrates the scientific power of their drone. Gen then employs a number of psychological manipulation techniques, hoping to get him to talk.

Mozu admits that he's not allied with Minister Ibara, and that he doesn't rebel due to the power of the Petrification Weapon that Kirisame possesses. Senku claims that their goals are aligned, but Gen demands that they must receive the Petrification Weapon should they ally. Mozu refuses, stating that he must be the one to receive the weapon. Gen's demand was another manipulation technique, successfully securing the alliance with Mozu by having him focus on the terms. The other members of the Kingdom of Science congratulate an exhausted Gen.

The Kingdom of Science disguise their new ally as an invader, hoping to have him stir up rumors of their own strength.

Characters in Order of Appearance

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Chapters and Volumes
Volume 1 1234567Extras
Volume 2 89101112131416Extras
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Volume 19 161162163164165166167168169
Chapters not yet in tankōbon format 170171172173174175176177178179180181182
[v  e]
Story Arcs
Prologue Saga
Stone Formula Arc
Chapters 1234
Episodes 12
Vs. Tsukasa Arc
Chapters 56789101112
Episodes 345
Ishigami Village Saga
Kingdom of Science Arc
Chapters 131415161718192021222324252627282930313233
Episodes 5678910111213
Village Games Arc
Chapters 34353637383940
Episodes 131415
Village Origins Arc
Chapters 4142434445
Episodes 1617
Stone Wars Saga
Vs. Hyoga Arc
Chapters 4647484950
Episodes 1819
Communications Arc
Chapters 5152535455565758596061626364656667686970717273747576777879808182
Episodes 20212223242526
Source of the Petrification Saga
Age of Exploration Arc
Chapters 8384858687888990919293949596979899 100
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
South America Arc
Chapters 170171172173174175176177178179180181182
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