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Raymund Allen, A Happy Solution (1916)

January 12

一个国际象棋的谜题。关键是要证明小偷可以从棋盘上最后的局面推出之前的进程，有点意思。文中还提到了一种隐形墨水，经过足够长的时间会显出颜色来。

 

Posted by on January 12, 2006 in story

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