English description of a toy, please translate

drop one of your tiles down into any slot

When you play, drop a tile (I'm not sure how to translate this word, because it depends on your game, for now it's just solitaire) into any slot

one simple rule: a 3 can only be placed so that it lans in one of the red squares. simple rule: a 3 can only be placed so that it lans in one of the red squares. 1's and 2's can go anywhere.(including the red squares)

Simple rule: only 3's can be replaced, only then can 3's go anywhere. replaced, and only then can 3's be placed so that it lans in one of the red squares. 1's and 2's can go anywhere.(including the red squares)

The pictures in chapter 3 are a bit blurry to read, so there is no translation