#!/usr/bin/env ruby
words = []
File.open('/usr/share/dict/words'){|f|f.each{|l|words << l.chomp}}
puts "How many letters is it?"
len = gets.to_i
words = words.find_all{|w| w.length == len}
puts "Hmm.  That matches #{words.length} words."
puts "What is the first letter?"
first_letter = gets.downcase[0]
words = words.find_all{|w| w.downcase[0] == first_letter}
puts "That narrows it down to #{words.length} words"
puts "What is the last letter?"
last_letter = gets.downcase[0]
words = words.find_all{|w| w.downcase[-1] == last_letter}
puts "That narrows it down to #{words.length} words"
[ 10, words.length ].min.times do |i|
  puts "Is it #{words[i]}?"
  if gets =~ /^y/i
    puts "HA! I told you I was smart!"
    exit 0
  end
end
puts "You beat me!"