Any free site where you can select puzzles by several specific themes?

I know you can do that here if you select "Puzzles" and then "Custom Puzzles" but is there anywhere online where you can do that without a membership?

I know you can do puzzles on Lichess by theme (and on Chess Tempo) but you can only choose one theme at a time. I think? What I am looking for specifically is a random assortment of puzzles that specifically focus on: fork / double attack, pin, skewer, back rank, mate in one. In other words.... just the basics...

you can choose multiple themes on chess.com, and you already have platinum membership so you won have any limit on the amount of puzzles you can do

Yes I was looking for use with friends who don't have chess.com membership - anyone know of free places? 

I heard a rumour that search engines work pretty well for finding things, but I'm going to wait and see.

yes, chesstempo. But I bet you already knew this

Yeah unfortunately they only let you select one theme at a time here. I want to select several specific themes. Also looking for something for free, I am trying to help some friends out and it's always useful to know about something which doesn't require membership

Oh wow! Yeah I NEVER thought of that!! Thank you so much *face palm*

On lichess can you select a random set of puzzles according to specific themes? It's kinda amazing how people reply here without even reading the initial post