Phase 1 section
Pokemon Red and Blue Pewter City and Pewter Gym Walkthrough
Boulder Badge Pewter City and Pewter Gym section for the Pokemon Red and Blue walkthrough with wild Pokemon, trainers, items, hidden items, coordinates, and boss strategy.
Clear Pewter Gym and earn the Boulder Badge. This page is a standalone section for Phase 1: Boulder Badge, with source-backed Red/Blue encounter, trainer, item, hidden item, and boss data.
Source maps
Pewter City, Museum 1F, Museum 2F, and Pewter Gym.
Wild rows0 Trainers2 Items2
Route plan
If you chose Charmander, do not rush Brock. Train Butterfree for Confusion/status, bring Potions, and use Route 22 backup if Charmander is still relying on Scratch.
Wild Pokemon
No wild Pokemon are sourced for this section.
Trainers
| Route order | Trainer | Team | Reward | Optional / rematch note |
|---|---|---|---|---|
| 1. Pewter Gym (4, 1) |  BrockParty #1 | $1,386 | One-time trainer; no rematch in Red/Blue. | |
| 2. Pewter Gym (3, 6) |  Jr. Trainer MParty #1 | $220 | One-time trainer; no rematch in Red/Blue. |
Items And Hidden Items
| Item | Type | Area / direction | Coordinate | Requirement |
|---|---|---|---|---|
| Old Amber | Key item | Return with Cut and enter the museum's side door. | - | Return with Cut and enter the museum's side door. |
| TM34 Bide | Gym reward | Defeat Brock. | - | Defeat Brock. |
Boss Strategy
| Boss / branch | Team | Reward | Danger notes | Practical counters |
|---|---|---|---|---|
| BrockBrock | $1,386 | Geodude and Onix have high Defense for this point and punish Charmander teams that arrive with only Normal moves. | Bulbasaur or Squirtle win directly. Charmander should lean on Butterfree's Confusion/status, extra levels, Potions, and Route 22 backup; Metal Claw and early Mankey are remake/Yellow solutions, not Red/Blue ones. |
Completion Checklist
- Beat the Gym trainer.
- Defeat Brock.
- Note Old Amber for later Cut access.
- Verify the wild table's version splits before leaving if you are filling the Pokedex.
- Use the item rows as a visible-item and hidden-item sweep before moving to the next section.
Sources
pret/pokered: wild encounters, trainer parties, trainer money, map object events, hidden event items, rods, trades, and prize Pokemon.- Encounter odds aggregate the Gen I ten-slot rates: 51/256, 51/256, 39/256, 25/256, 25/256, 25/256, 13/256, 13/256, 11/256, and 3/256.
- Red/Blue has no day/night encounter column; tables use Version, Method, and Condition instead.