user21083: I am still learning chess (been playing ~6 months steadily now and am at ~1300) and have recently been enjoying correspondence chess with a 3 day time control. I find it gives me time to really analyze each move without the pressure of time that I get with blitz games. 
I have been trying to learn new openings in detail, mostly using opening explorer in lichess or chess.com. As most of you probably know, it breaks down the most popular moves in the opening from games played and gives the % outcome of white wins/black wins/draw for each move. This is an amazing resource for someone like myself who doesn't have lines memorized yet, but is it unethical to refer to these resources during a daily game?
I would never refer to an engine for a current game and the opening explorer is only showing the data for games that have been played, not evaluating positions, but I still wonder if it would be wrong to use. 
What is the general consensus of the online chess community on this?

user20721: Yes.
All correspondence chess always allowed written materials. 
Now they may also allow computers, and AFAIK also do so  as it would be impossible to know if someone was using one or not. 
Many people now complain that CC is just one computer versus another. 
I always suspected that Hans Berliner had used a computer when he worked at FSD in Gaithersburg for IBM as he showed some computer chess programs at the DPD datacenter in DC.
You need to be careful with what looks like winning percentages in those databases.  I have found you can pick the move that seems the best and then the next move by the opponent he has options that are better than what you thought you had picked. 

user19877: Yes.
ICCF: Says nothing about it, or assistance of any kind, and you can even use computers legally. Here are their rules.
USCF: "3. You may consult chess books and periodicals but not other players." Here are their rules.
With regards to the ICCF rules, my guess is that they just decided it was too hard to police computer used, so they just allow it. Books have always been permitted.

21083: <p>I am still learning chess (been playing ~6 months steadily now and am at ~1300) and have recently been enjoying correspondence chess with a 3 day time control. I find it gives me time to really analyze each move without the pressure of time that I get with blitz games. </p>

<p>I have been trying to learn new openings in detail, mostly using opening explorer in lichess or chess.com. As most of you probably know, it breaks down the most popular moves in the opening from games played and gives the % outcome of white wins/black wins/draw for each move. This is an amazing resource for someone like myself who doesn't have lines memorized yet, but is it unethical to refer to these resources during a daily game?</p>

<p>I would never refer to an engine for a current game and the opening explorer is only showing the data for games that have been played, not evaluating positions, but I still wonder if it would be wrong to use. </p>

<p>What is the general consensus of the online chess community on this?</p>
 20721: <p>Yes.</p>

<p>All correspondence chess always allowed written materials. </p>

<p>Now they may also allow computers, and AFAIK also do so  as it would be impossible to know if someone was using one or not. </p>

<p>Many people now complain that CC is just one computer versus another. </p>

<p>I always suspected that Hans Berliner had used a computer when he worked at FSD in Gaithersburg for IBM as he showed some computer chess programs at the DPD datacenter in DC.</p>

<p>You need to be careful with what looks like winning percentages in those databases.  I have found you can pick the move that seems the best and then the next move by the opponent he has options that are better than what you thought you had picked. </p>
 19877: <p>Yes.</p>

<p>ICCF: Says nothing about it, or assistance of any kind, and you can even use computers legally. <a href="https://iccfwebfiles.blob.core.windows.net/rules/2019/THE%20ICCF%20LAWS%20OF%20CORRESPONDENCE%20CHESS%2001.01.2019.pdf" rel="noreferrer">Here are their rules.</a></p>

<p>USCF: "3. You may consult chess books and periodicals but not other players." <a href="https://www.uschess.org/content/view/7521/397/" rel="noreferrer">Here are their rules.</a></p>

<p>With regards to the ICCF rules, my guess is that they just decided it was too hard to police computer used, so they just allow it. Books have always been permitted.</p>
