Once you’ve defeated every gym leader, made it to the Elite Four, and triumphed to become champion of Pokemon FireRed & LeafGreen’s Pokemon League, the world will expand even further for exploration. With the National Dex unlocked, you can return to the Sevii Islands to experience the variety of new areas, Pokemon, and challenges that await you.
While you might be distracted by hunting for Legendary Pokemon like Lugia & Ho-Oh, there’s a secret puzzle on Six Island that will unlock access to a special Pokemon hidden within the Tanoby Ruins: Unown. Here’s how to solve the Tanoby Key puzzle and catch all Unown in Pokemon FireRed & LeafGreen.
Where To Find The Tanoby Key Puzzle
To find the Tanoby Key Puzzle, you’ll first need to beat the game and embark on the postgame quests on the Sevii Islands. Once you reach Six Island, you’ll come across a strange cave in Sevault Canyon, to the south of your arrival point.
Progress south through Sevault Canyon until just before you reach the rest house near the water. Here, you’ll spot a cave entrance hidden in a small section to the left, with plenty of tall grass outside.
Enter the cave, and you’ll be greeted by a series of seven boulders that you must use Strength to move.
If you already have a Pokemon that knows Strength, then you can get started on the solution right away.
How To Solve The Tanoby Key Puzzle
To solve the Tanoby Key Puzzle, we’ll first label the boulders one through seven so we can easily describe where to move each boulder.
In addition to the numbering in the image, the boulders are labeled as follows:
- Boulder One – Top middle
- Boulder Two – Top left
- Boulder Three – Top right
- Boulder Four – Bottom left
- Boulder Five – Bottom right
- Boulder Six – Middle left
- Boulder Seven – Middle right
- Push Boulder One straight up into the top central space.
- Move up through the center, then position yourself to the left of Boulder Two.
- Push Boulder Two once into the middle, then up twice.
- Go to the right and push Boulder Two into the uppermost left spot.
- Go to the right of Boulder Three, then push it once into the middle, then up twice.
- Go to the left and push Boulder Three into the right uppermost spot.
Now the top portion of the boulders is done, so it’s time to focus on the bottom four boulders.
- Push Boulder Four left, then push Boulder Five right.
- Hop down over the ledge, then push Boulder Four straight up into the bottom left space.
- Repeat on the other side, pushing Boulder Five straight up into the bottom right space.
With all that done, all you need to do is move Boulders Six and Seven into the middle two open spots.
- Go below Boulder Six, then push it straight up into the rock, then left into the open space.
- Go below Boulder Seven, again, push it straight up into the rock, then right into the final space.
Once you’re done with this, you’ll receive a message, “A mysterious rumble echoed somewhere far away,” indicating you’ve successfully finished the puzzle.
With the Tanoby Key Puzzle solved, you can enter the series of caves in the water, south of Six Island.
These caves contain all 28 species of Unown: the letters A-Z as well as the exclamation mark and question mark variants.
You’ll need to search different caves in the Tanoby Ruins to collect all the letters, so don’t forget to search for them all.
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