How come that the a weight of two is not splittable? Each part would be one kilo, which according to the description should be a valid even number? :)

Yeah i have the same problem.

Same issue here.

Take from my comment:

A positive headwind value indicates the wind coming from ahead (headwind) and a negative value implies a tailwind.
A positive crosswind value implies crosswind from the right and a negative value indicates a crosswind from the left.

The kata itself is entertaining and a nice challenge, unfortunately the wind direction description is lacking.

A more understandable description would be:

A positive headwind value indicates the wind coming from ahead (headwind) and a negative value implies a tailwind.
A positive crosswind value implies crosswind from the right and a negative value indicates a crosswind from the left.