Abstract The KRYPTOS competition is an annual codebreaking competition for undergraduates. Debuting in 2011 with 49 participants from three states, after nine years we have seen over 1,000 students from 32 states and seven different countries. KRYPTOS will hold its tenth competition in April of 2020. Here we present some of the puzzles participants have found most elusive and challenge you to beat the clock on our fastest solver.

中文翻译：

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庆祝 KRYPTOS 十周年：一系列密码分析

摘要 KRYPTOS 竞赛是一年一度的大学生密码破解竞赛。2011 年首次亮相，有来自三个州的 49 名参与者，九年后，我们看到了来自 32 个州和七个不同国家的 1,000 多名学生。KRYPTOS 将于 2020 年 4 月举行第十届比赛。在这里，我们展示了一些参与者发现最难以捉摸的谜题，并挑战您在我们最快的求解器上击败时钟。