The starting orientation of the robot is not specified (only the starting position). If the top-left tile is or K the move is undefined.

Sample tests are missing.

Actual tests give You didn't clear the named param variable (TIP: USE 'delete this[...]')! when example tests pass, so clearly the example tests and actual tests have two different testing mechanisms, and hence the sample tests do not reflect what is actually being tested.

This kata is simply a bad idea, period.

(The reason is left as an exercise to the reader, but any sane reader should've figured this out)