I also think it would be really nice if the position switched to an "analysis mode" after completion. Sometimes, especially if one gets a problem wrong, it's ni

I also think it would be really nice if the position switched to an "analysis mode" after completion. Sometimes, especially if one gets a problem wrong, it's nice to examine the position more deeply. Bonus points if some open-source chess engine is integrated (I presume this can be done client-side somehow?).