Sudoku Players' Forum (clone)

Have been exploring "Krokpi" grids with no dots (so - nonconsecutive and non-1:2-ratio for orthogonally adjacent cells). There are 8448 grids total, and have been having fun finding unique puzzles with thermos.

The first one is very doable... though it's also still unique if the high end of the thermo is removed, at which point it is beastly. (I can solve it manually starting from the knowledge that all anti-kropki grids are "roped" - that is, horizontal triplets in a box are shared by the other boxes in the band, and vertical triplets in a box are shared by the other boxes in a stack.)

This one has a familiar theme... not sure how to even start on this one, the thermos are so short.

Finally, this enigma...