Well here both the A sonata K331 and the Am K310 are listed as grade 8. This year I played a Haydn sonata which is listed as grade 7 here. So i guess this sonata is a bit more difficult, but i have time to learn it, i think i'm gonna go for the A minor sonata. And yeah,the requirements for the competition i'm going to are a 1st movement sonata, so I can't go 2nd or 3rd.