It's been pretty amazing to watch the evolution of sudoku theory over even the last two years, some truly genius work by eg Phistomofel, Aad van de Wetering, To

It's been pretty amazing to watch the evolution of sudoku theory over even the last two years, some truly genius work by eg Phistomofel, Aad van de Wetering, Totally Normal Cat as well as the enormous contribution of Cracking the Cryptic