On the other hand, here’s a sudoku with the givens in the shape of a Yin-Yang. Only I’ve just noticed that’s only true modulo a reflection – and we all know the sorts of trouble that quotienting out by an involution can get us into. So tomorrow I’ll put up a properly shaped puzzle. :)
Enjoy this incredibly easy fodder for now though!
#006 sudoku – rated easyAll puzzles © Tom Collyer 2009