Concerto vs. Concertino

[jamie0168]

I'm so very confused. I recently entered a concerto competition and found one of the winners to be playing a concertino instead. I thought CONCERTO competitions had to have concertos only being played in them (including obvious non-concerto titles like Theme o Paganini, and Rhapsody in Blue.) I had no idea that you could compete with concertinos. Could someone please explain these rules to me? I'm sure it varies from competition to competition (which ours isn't very big), but I would certainly like to know the guidelines for this so I know what my repertoire options are for these competitions.

[invictus]

Concerto = 3 movements
Concertino = 1 movement

[klavierkonzerte]

Concerto = 3 movements
Concertino = 1 movement

and conertinos are relativly easier than concertos.

are there any fine piano concertinos? i never heared any.

[mikey6]

Concerto = 3 movements
Concertino = 1 movement

not necessarily - Larson's concertino's are in 3 movements (I know 2 of them are anyway)
I think it's a scale thing - like sonatina/sonata, symphonietta/symphony.