yaworsw/euler-manager

---
:id: 206
:name: Concealed Square
:url: https://projecteuler.net/problem=206
:content: "Find the unique positive integer whose square has the form 1\\_2\\_3\\_4\\_5\\_6\\_7\\_8\\_9\\_0,
  \ \n where each “\\_” is a single digit.\n\n"