Puzzle of the Day
This is a game for two. Start by writing zero. The first player adds 1, 2, or 10 and writes the answer. The second player adds 1, 2, or 10 to this answer and writes the new number, and so on. The winner is the first to reach 20.
Answer: best strategy is to aim to get to 2, 5, 8, 11, 14, 17