NBPhO 2021

NBPhO 2021

Saturday, May 8th 2021, 10:00-15:00 (UTC+3).
Exact competition time: 10:28-15:28.


Problems published on May 8th, 2021 at 10:28 o’clock (UTC+3).


  • Solutions in English (updated on May 18th 13:47)

Small corrections to the solutions (May 18th 13:47)
Grading schemes added (May 11th 08:40).
Grading schemes updated (May 11th 11:17).
Small correction to grading scheme (May 11th 16:10)


Unofficial contestants added (May 21st 11:08)