Solving Loki (11.9) with Oddagons
In this post I'll be solving the puzzle Loki, published by mith in 2022. Here's a link to the original thread. Loki broke many records and was dubbed the "hardest puzzle in the world". It is one of the few puzzles with SE 11.9, if I recall correctly the 10th to be found. 11.9 is conjectured to be the maximum possible difficulty in a Sudoku puzzle. It was also the first ever puzzle proven to be in T&E(3), breaking a decades-old conjecture that 2 was the maximum. Its discovery opened the floodgates and since then the users on the Sudoku Players' Forum have been largely dedicated to exploring its offshoots and generating hundreds of thousands of extremely difficult puzzles utilising 3-digit chromatic impossible patterns. But can a lowly human solve it? Let's see.
