scidoku

if you've ever gotten really into sudoku and started doing it and timing the results, here's another type of sudoku i found:

Scidoku

it just proves that i'm a huge nerd.

but i found out a thing that's interesting. when i scan a row or a column or a single 3x3 box for missing numbers (in normal sudoku), i pick out the missing ones by sight or feel, not by counting 123_56_89. because in scidoku there's some random jumble of 9 letters that's used, and i was able to start figuring out the missing letters really quickly even though i can't recite them in a row right now. funny how the brain works. which side does the math again?