This text was stolen from https://raw.github.com/JonJagger/cyberdojo/master/exercises/Yahtzee/instructions
The game of yahtzee is a simple dice game. Each player
rolls five six-sided dice. The player places the roll in
a category, such as ones, twos, fives, pair, two pairs
etc (see below).
If the roll is compatible with the category, the player
gets a score for the roll according to the rules. If the
roll is not compatible with the category, the player scores
zero for the roll.
For example, if a player rolls 5,6,5,5,2 and scores the
dice in the fives category they would score 15 (three fives).
Your task is to score a GIVEN roll in a GIVEN category.
You do NOT have to program the random dice rolling.
You do NOT have to program re-rolls (as in the real game).
You do NOT play by letting the computer choose the highest
scoring category for a given roll.
Yahtzee Categories and Scoring Rules
===================================
Chance:
The player scores the sum of all dice,
no matter what they read.
For example,
1,1,3,3,6 placed on "chance" scores 14 (1+1+3+3+6)
4,5,5,6,1 placed on "chance" scores 21 (4+5+5+6+1)
Yahtzee:
If all dice have the same number,
the player scores 50 points.
For example,
1,1,1,1,1 placed on "yahtzee" scores 50
1,1,1,2,1 placed on "yahtzee" scores 0
Ones, Twos, Threes, Fours, Fives, Sixes:
The player scores the sum of the dice that reads one,
two, three, four, five or six, respectively.
For example,
1,1,2,4,4 placed on "fours" scores 8 (4+4)
2,3,2,5,1 placed on "twos" scores 4 (2+2)
3,3,3,4,5 placed on "ones" scores 0
Pair:
The player scores the sum of the two highest matching dice.
For example, when placed on "pair"
3,3,3,4,4 scores 8 (4+4)
1,1,6,2,6 scores 12 (6+6)
3,3,3,4,1 scores 0
3,3,3,3,1 scores 0
Two pairs:
If there are two pairs of dice with the same number, the
player scores the sum of these dice.
For example, when placed on "two pairs"
1,1,2,3,3 scores 8 (1+1+3+3)
1,1,2,3,4 scores 0
1,1,2,2,2 scores 0
Three of a kind:
If there are three dice with the same number, the player
scores the sum of these dice.
For example, when placed on "three of a kind"
3,3,3,4,5 scores 9 (3+3+3)
3,3,4,5,6 scores 0
3,3,3,3,1 scores 0
Four of a kind:
If there are four dice with the same number, the player
scores the sum of these dice.
For example, when placed on "four of a kind"
2,2,2,2,5 scores 8 (2+2+2+2)
2,2,2,5,5 scores 0
2,2,2,2,2 scores 0
Small straight:
When placed on "small straight", if the dice read
1,2,3,4,5, the player scores 15 (the sum of all the dice).
Large straight:
When placed on "large straight", if the dice read
2,3,4,5,6, the player scores 20 (the sum of all the dice).
Full house:
If the dice are two of a kind and three of a kind, the
player scores the sum of all the dice.
For example, when placed on "full house"
1,1,2,2,2 scores 8 (1+1+2+2+2)
2,2,3,3,4 scores 0
4,4,4,4,4 scores 0