I wanted to get a physical sweeper shinx, but how can I guarantee that it will be a shinx?
Look at the front page, go down a few posts, and it talks about encounter slots. You look at the frames your shiny spread is at, right click it and you can choose encounter slots, and you will find out what number it is. Compare that number with the encounter table for where shinx is caught, and just check the frames until you find one that is shinx.