Hi alextro, in this capx of yours, (that help me a lot!) wen we start the game the pieces are shuffled in the slider according to their Y (ascending), so all the pieces from the first row will be on top, them the ones from the second row and them the ones from the third row.
If is not ask too much, do you have some idea on how really shuffle the pieces totally randomly in the slider?
I've been trying this for some days now, but can't find a way to it, maybe you have some trick to save me?
Thank you again ^^