The Final Of The World Sudoku Championship 2018

Simon reviews part of this year's final from Prague where Kota Morinishi, defending World Champion, is solving a Fortress Sudoku. In this variation, the grey cells must be greater than the white cells they are orthogonally connected to. This is an absolutely beautiful puzzle, which the finalists dashed off in about 7 minutes.

This is the link to the Final:

https://www.youtube.com/watch?v=ZepyEDTuimE&t=3975s

Видео The Final Of The World Sudoku Championship 2018 канала Cracking The Cryptic