Bruteforce

#!/usr/bin/env ruby


def result?(sub)
  puts sub
    1 == 2
end

def crack_yielding(chars)
    crack_yield(chars){ |p|
        return p if result?(p)
    }
end


def crack_yield(chars)
    chars.each { |c| yield c }

    crack_yield(chars) { |c|
        chars.each do |x|
            yield c + x
        end
    }
end

chars = ('a'..'z').to_a
(0..9).each {|x| chars << x.to_s}

crack_yielding(chars)