I misread your message, I thought you said the contrary. I raised an issue for similar reasons with PHP, I'll add Java to it.

That's what the kata asks to do.

Duplicate suggestion below

Maybe you use "grEy" but not "grAy" in your map?

It can be nil if you calling function without do-catch. For instance: var node = try? getNth(node, index)

Fixed

I don't think \r should be removed because the description says:

The return value of your interpreter should be a representation of the final state of the 2D data grid where each row is separated from the next by a CRLF (\r\n).

Is this something specific to Swift? If so, please open a new issue describing it.

Depends on the language. In Ruby or Python it's quite easy if you know what to do.

Agreed. On the other hand some 7kyu-s Katas feel more difficult than this one.
It would be better if we could give a kyu level after completion.
That way Katas would have a better leveling.

Sorry about that, I just left a message for the person who did the Swift translation, asking if they could check it out.

It seems problems with Swift version are already reported below, and yes, gray red green gold is the right one.

Fixed it.

Thanks!

@BridgeTheGap: we are waiting yours:-)

A world with various walls and bridges in squares. Something like this: https://archive.org/details/Puzzle_Rally_v1.3 (although not exactly, because true full loops can't be reduced).