The New Sudoku Players' Forum

[mith]

I'm pretty sure that this sort of setup can never produce a unique puzzle without additional constraints (can probably prove it, even, though I haven't fleshed that out yet), but I came up with this silly proof of concept last week for a minimal (and aesthetically pleasing) constraint to make it work.

Code: Select all

..98....7.6..5..4.3....21..7....35...1..6..8...49....25....19...8..4..3...27....6
Thermo constraint: r5c3 is greater than r4c4