sum(in_stock::int) as in_stock_variants

Roger that, also, I set the number of test to 10_000.

Thanks for your translation, however I would ask you to reupdate the description like it is in the kata right now(It's more clear to understand).

• Also will be great to add a print method, to represent the chess board and where are the rooks positioned
  Cheers!

Javascript tanslation