letterpress.rb

# Requires Ruby 1.9 and OS X
# The letters in your game... include repeats
game_letters = %w()

# Words that have been played already
played = %w()

def to_hash(letters)
  letters.inject({}) do |h,l|
    h[l] ||= 0
    h[l] += 1
    h
  end
end

game_hash = to_hash(game_letters)
count = 0
matches = []
IO.foreach('/usr/share/dict/words') do |line|
  word = line.downcase.strip
  next if played.include?(word)
  letters = word.split('')
  letters_hash = to_hash(letters)
  answers = letters_hash.to_a.map do |pair|
    game_count = game_hash[pair.first]
    game_count && game_count >= pair.last
  end
  if answers.all?
    matches << word
  end
end

matches.sort! do |x,y|
  y.size <=> x.size
end

puts matches.slice(0, 50)

Stunning! Love it!