Sudoku Samurai

Today I messed up a Sudoku puzzle in the shortest amount of time ever. See this example for how many step it took before I made a mistake:

This isn't the exact puzzle, but it was that bad of a mistake. I didn't catch the problem until the next number I tried to write down should have gone on top of it.
I am pretty much a Sudoku Samurai.

Today's events include writing a paper, doing a huge homework and making a test. All of which needs to get done by today. So I'll be hanging around wifi hotspots all day, so if you have a chance come by and rock it on out with me.