There’s a part of me that still wants to tackle the question of calculating the number of possible Sudoko solutions (i.e., 9×9 grids that meet the constraints f

There’s a part of me that still wants to tackle the question of calculating the number of possible Sudoko solutions (i.e., 9×9 grids that meet the constraints for a Sudoko) analytically rather than by brute force (which is how the number is currently calculated). Back in my grad school days (which also corresponded to the height of the Sudoko craze), I got a start on it, but got lost in the weeds pretty quickly. Maybe I should give it another try.