That is the Daily analysis mode which allows you to move pieces around and test lines with no engine assistance and is allowed in the format.
Daily Game "in-game self-analysis tool" Question

So it doesn't tell you if you have an advantage? Or does it?
there might be a weird glitch in beta, but no it doesn't
Hi Denny,
No, the poorly named "in-game self-analysis tool" (only available in daily games) does not tell you if you have an advantage with your move modeling.
On a separate subject, but still related to daily games, the "opening explorer" tool (see the compass in the upper right of the daily-game screen image above) indirectly tells you if you have an advantage--statistically speaking--with various potential moves by comparing the board position with candidate moves to the same moves in published games of chess masters. I could be wrong, but the "opening explorer" may only be availabe in daily games.
Both the "in-game self-analysis" tool and the "opening explorer" have been explicitly listed on chess.com as allowable in daily games, and the tools being available during daily game play supports this acceptance.
The chess.com fair play policy seems to get edited, so I don't see the "in-game self analysis" tool listed explicity right now as allowable for daily games. But, reading and considering the other Fair Play Policy "do-not"s I don't perceive it as violating any rules. Previously, I read on chess.com that it was explicity allowed. It seems to me customers would be best served through an explicit listing in the Fair Play Policy for this "self-analysis" tool in daily games.
In another post, I humbly lamented the naming of the "in-game self-analysis tool" as a little confusing. As someone who wants to only play by the rules, "analysis" sounds a bit close to "engine analysis". So, sadly, I avoided that tool for far too long thinking it may be a form of cheating. It took too much time searching chess.com and asking questions for me to learn it is completely o.k. to use that in daily games. Personally, I think "move-modeling" is a better term (but not the only one, and I'm open to other ideas).
Responsible comment time: Please consult the link above or the chess.com legal department before accepting any on-line legal interpretations.
Hello!
I'm confused by the term "self-analysis" which the chess.com rules lists as being allowable during daily games. I am concerned about straying "off the sidewalk" of tool use (even clicking on one) and unintentionally violating rules , so I've come to ask others who may know and have used the daily chess "in-game self-analysis tool".
Yes, I see the magnifying glass icon while playing daily games. I thought you could only use engine analysis after games, and I've confirmed that is a correct understanding.
So, if this utility isn't for engine analysis, is it intended for move modeling by a daily player? If unaided move modeling is actually what the "in-game self-analysis tool" is meant for, then that would be great for me. (I don't have a physical board & pieces, and use another, less-convenient, on-line (no engine help) method of setting up a board, piece positions, and modeling moves)
Maybe I will improve one day to see this modeling of piece moves better in my head, but I don't see it <pun!>.
Thanks for the kind intention of taking the time to read, but I'm hoping for clarity and guessing won't help.