Near the end of The Witness, there are a series of puzzles wrapped around pillars.
I'm having trouble with the one composed of a 6×5 grid mostly covered with dots ⬣. I've already tried drawing it on paper, but still couldn't figure it out. I need some hints.
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--*--*--*--*--*--*--
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--*--*--*--* *--*--
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--*--*--* *--*--*--
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--*--* *--*--*--*--
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--O--O--O--*--*--*--
Best Answer
Sorry, no spoiler tags here because it doesn't work correctly with code blocks. So...
Spoiler warning! 3...
Spoiler warning! 2...
Spoiler warning! 1...
Since a dot requires a line passing through it, we can pick which dots have only two possible connections:
Extending the lines from those six dots leads to four more dots being connected:
Now, we can repeat the same idea and create two new corners based on the four dots we've just connected:
This leads to two dots that can only be connected horizontally:
Which leads to three more corners:
Almost there, only two dots and two free ends are left:
Which finally leads to the solution:
So... Drawing this on the computer, using characters, worked better for me than drawing on a piece of paper.