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Dr. Stone Wiki

Brain-Battle Puzzle Pieces ( () (のう) (せん) のパズルピース Zunō-sen no Pazuru Pīsu) is the one hundred and twenty-second chapter of the Dr. Stone manga.


In the hidden cave within the Petrification Kingdom, the Kingdom of Science revives Yuzuriha, Chrome, and Ukyo. Amaryllis soon arrives, having seen Kohaku and Ginro's petrification. She reveals the secret of the kingdom: their master's been petrified and appears to be related to Soyuz.

With the knowledge they have in hand, the Five Commanders try to piece together the situation. They deduce that the Petrification Kingdom must only have a single Petrification Weapon and that Kirisame isn't privy to the kingdom's secret.

Moz appears, having followed Amaryllis. Taiju attempts to defend the others, but is easily outmatched. However, the Commanders deduce that Mozu must not be directly working with Ibara. Gen steps up, aiming to convince Mozu to join forces with the Kingdom of Science.

Characters in Order of Appearance

Chapter Notes

  • Yuzuriha, Chrome, Ukyo are revived.
  • Amaryllis tells everyone that Kohaku and Ginro have been petrified, and tells them that Ginro believe Soyuz was related to the head of the Petrification Kingdom.
  • Everyone tries to put together the clues they have to come up with a plan.
    • They realize there's only one petrification weapon.
    • Kirisame doesn't know the head of the kingdom is petrified.
    • Moz doesn't care what happens to Ibara.
  • Moz arrives in the Sapphire Cave.

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Chapters and Volumes
Volume 1 1234567Extras
Volume 2 89101112131416Extras
Volume 3 17181519202122232425Extras
Volume 4 262728293031323334Extras
Volume 5 353637383940414243Extras
Volume 6 444546474849505152Extras
Volume 7 535455565758596061Extras
Volume 8 626364656667686970Extras
Volume 9 717273747576777879Extras
Volume 10 808182838485868788Extras
Volume 11 899091929394959697Extras
Volume 12 9899100101102103104105106Extras
Volume 13 107108109110111112113114115Extras
Volume 14 116117118119120121122123124Extras
Volume 15 125126127128129130131132133Extras
Volume 16 134135136137138139140141142Extras
Volume 17 143144145146147148149150151Extras
Volume 18 152153154155156157158159160Extras
Volume 19 161162163164165166167168169Extras
Volume 20 170171172173174175176177178Extras
Volume 21 179180181182183184185186187Extras
Volume 22 188189190191192193194195196Extras
Volume 23 197198199200201202203204205Extras
Volume 24 206207208209210211212213214Extras
Volume 25 215216217218219220221222223Extras
Chapters not yet in tankōbon format 224225226227228229230231232
[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 20212223242526272829303132333435
Source of the Petrification Saga
Age of Exploration Arc
Chapters 8384858687888990919293949596979899 100
Episodes 35
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
South America Arc
Chapters 170171172173174175176177178179180181182183184185186187188189190191192193
New Stone World Arc
Chapters 194195196197198199200
Globetrotting Arc
Chapters 201202203204205206207208209210211212
Stone to Space Saga
Moon Mission Arc
Chapters 213214215216217218219220221222223224225226227228229230231232