We have built a very successful Scrobly game, which up until recently is only available in Canada. We have recently won a contract to distribute in Mexico, which means our English centric scoring system will not work in the new market.

Currently we use the scorer in the game this way:

Scoring.new.score_letter('C') # returns 3

This behavior should not change. However the engineers developing the TileService have communicated they intend to use the Scoring in the following way for the Mexico version:

language = :spanish
Scoring.new(language).score_letter('C') # returns 2

English-language sets sold within Canada use:

1 point: E, A, I, O, N, R, T, L, S, U
2 points: D, G
3 points: B, C, M, P
4 points: F, H, V, W, Y
5 points: K
8 points: J, X
10 points: Q, Z

Spanish-language sets sold within Mexico (known as Scrobly – Edición en Español) will use:

1 point: A, E, O, S, I, U, N, L, R, T
2 points: C, D, G
3 points: B, M, P
4 points: F, H, V, Y
6 points: J
8 points: K, LL, Ñ, Q, RR, W, X
10 points: Z

We're not allowed to sell there because of something called "Scrabble."

• You do not have to finish the code or reach a perfect solution.
• You should be able to explain the choices you have made.
• You should be able to demonstrate that you can:
  • read a method in Ruby
  • express business logic into new code
  • alter the behavior of existing code
• You may (for added bonus):
  • take advantage of refactoring opportunities
  • write new tests
  • make performance improvements

https://en.wikipedia.org/wiki/Scrabble_letter_distributions#Spanish