There is an alternate solution to the sudoku, which means it is not a properly set puzzle :( The hints stop at the very moment the puzzle becomes not deterministic 3 6 2 1 4 5 1 5 4 6 2 3 6 2 5 3 1 4 4 1 3 2 5 6 5 3 1 4 6 2 2 4 6 5 3 1 ...

https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3459594779 Unless I missed something, I don't thiink hint 1 is correct. I ran into trouble trying to put numbers in, but that's outside the scope of hint 1.

Regarding hint #14, I'm not sure why the 15 cage can't be 69.

I'm stuck here. The line from R5C5 to R8C8 is clearly a renban, so no more clues there. I'm failing to prove that any or all of R3C467 are or aren't circles. The puzzle seems to be completely out of options. https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3375635047 EDIT: And, apparently, widgets don't respect spoiler tags, because we can't have nice things....

I really struggle to see how to even start this one. Only available hint says that "noting the possible value for X is very helpful". So do i have to pencil mark EVERY option to build the sums in the rows and columns to see how it could break then? This can't seriously be the solution. 😯...