来自《耶鲁大学开放课程：博弈论 第15集 第15集》

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  I guess there's a third outcome
  我猜应该有第三个结果
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  if you get into a cycle you could tie.
  如果你们进入了一个循环你们可以打平
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  So checkers fits all these descriptions and
  这就是西洋跳棋
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  what this theorem tells us is that checkers has a solution.
  而这个理论告诉我们西洋跳棋是有解的
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  I'm not sure I know what that solution is,
  我不大记得是怎样的解了
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  or I think actually somebody did compute it quite recently,
  我记得最近真的有人去计算出来了
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  even in the last few months,
  好像就在几个月前
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  I just forgot to Google it this morning to remind myself.
  我今早忘了去谷歌一下
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  But what this theorem tells us even before
  但这个理论在那些人计算之前
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  those people that computed it: checkers has a solution.
  就告诉我们 西洋跳棋是有解的
• 
  
  Let's be a bit more ambitious. What about chess?
  我们来玩点大的 那国际象棋呢
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  So chess meets this description.
  国际象棋是这样的