i think i did every puzzle but the last at the momnt but it was satisfying getting the rule after 7-9 and such, but I somewhat wished there were more examples, I thought the rule could be "ybatrfg fvqr" be "ahzore bs fvqrf" /
"yriry ahzore zrnaf fbzrguvat" be "arrqf gb frr guvf znal oyhr qbgf" be "gbgny nern pbhagre pna or vairegrq vs bhgfvqr gur ybbc"
ultimately it was a nice rule and pretty fun :) love the drawing too, though i felt it could snap to grid...