https://www.chess.com/analysis-board-editor This is great for one-person practice/analysis. You can also go to Live Chess and choose "Analysis Board" from the Game Type menu. In Live Chess, you can invite others to join the board--great for multi-person practice/analysis!
Is there a practice board on this site that would allow the set up of positions and the determination of consequences as if we were moving pieces around a real board? Thanks!