Where are all the yellow-triangle puzzles? What are they for?
As you walk around the island, you occasionally come across simple puzzle-panels that aren't attached to anything. They all have a single yellow triangle in them, and no matter what solution you give, the puzzle gives a "correct" noise.
I assume they're all connected in some sort of larger puzzle.
- Where are they all?
- What are they for? (spoiler-free if possible)
Best Answer
MattRix's answer addresses tracking if you've found all of them but doesn't address what they're for. They're spread out across the island, and as MattRix says, the
lake by the town has orange leaves you can use to track which ones you've found and solved.
What they're for is purely a tutorial on the triangle puzzles. If you put them together, you get a tutorial on how the triangle puzzles work. Once you understand that rule, and get all the lasers,
you can go to the base of the mountain, and solve a triangle puzzle.
This then unlocks the final challenge area in the game. The challenge area itself has another triangle puzzle that leads to
The Challenge, which if you complete it, earns you an achievement.
Pictures about "Where are all the yellow-triangle puzzles? What are they for?"



What are the triangle puzzles in the witness?
The solutions aren't random and actually teach you an important concept for the end of the game. They all feature triangle icons - where the number of triangles in a square is related to how many times a line can touch the square. Below you will find a list of panel locations - sorted by area.How do you solve the triangle puzzle in the witness?
Triangles appear within the cells of a puzzle. In order to complete the puzzle, the cell containing the triangle must be surrounded with a number of lines equal to the number of triangles within the cell.How many obelisks are there in the witness?
The Town Obelisk is one of six large black structures found on the island in The Witness. Its purpose is directly tied to that of the many hidden Environmental Puzzles, and solving any of the nearby puzzles will light up a corresponding symbol, and reveal the symbols of other nearby puzzles.Where did the Extra Square come from? SOLUTION!
More answers regarding where are all the yellow-triangle puzzles? What are they for?
Answer 2
The orange-triangle puzzles can contain several triangles and not every solution you give is correct as you will see when you encounter new puzzles. They act as a tutorial for something big.
Answer 3
The yellow-triangle puzzles are basically tutorials for more complex puzzles at the later stages of the game. The same as you're taught mechanics of other puzzles in specific areas by doing enough puzzles in order to understand the logic behind it, these are spread across the map, so by doing more of them you can figure out these mechanics by your self (how they work). If you don't care about statistics and 100% completion of the game, do as much as you need in order to understand rules behind it.
Without knowing the rules of yellow-triangle puzzles, you won't be able to access many hidden places under the mountain (this also includes alternative ending of the game).
Here is the video (spoiler!) demonstrating one of such puzzles near ending.
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