I love 202 for sentimental reasons (latest problem available when I picked up PE, seemed impossible at the time, felt thrilled to solve it) and 422 because I fi

I love 202 for sentimental reasons (latest problem available when I picked up PE, seemed impossible at the time, felt thrilled to solve it) and 422 because I find the solution so elegant. I haven't touched PE in years but I still remember these problems and their solutions off the top of my head.