You can use Game Explorer all the way to end of a game in Turn-based chess. See site-playing-rules-a-guide-for-the-perplexed for a summary of the rules. (Be sure to read the updated 2nd version!)
It is a database of past games: if your game happens to exactly match one in the database (which is extremely unlikely), then you can consult the DB to find out what other people played.
If you look at the "What is it" column in the guide for the perplexed, it states "Opening Lines only ie the initial few moves." To me, it still isn't clear from this that the Game Explorer could be used throughout the game. However, when I see that books can be used for Turn-based chess, I guess using GE amounts to the same thing even though the "what it is" explanation is somewhat ambiguous.
Issue resolved for me.
Thanks.
You are supposed to discuss matters related to cheating here:
http://www.chess.com/groups/home/cheating-forum
If you check out the forum threads there, I'm sure you will find several that give information on your question.
If you look at the "What is it" column in the guide for the perplexed, it states "Opening Lines only ie the initial few moves." To me, it still isn't clear from this that the Game Explorer could be used throughout the game. However, when I see that books can be used for Turn-based chess, I guess using GE amounts to the same thing even though the "what it is" explanation is somewhat ambiguous.
Issue resolved for me.
Thanks.
It's clearer further down ... on the SECOND version. 
You are supposed to discuss matters related to cheating here:
http://www.chess.com/groups/home/cheating-forum
If you check out the forum threads there, I'm sure you will find several that give information on your question.
So I have to join a group to discuss cheating?
Yes. The staff will lock down threads about cheating in any of the main forums as soon as they run across them. Unless they are about OTB tournament cheating and carefully stay on topic.
Yes. The staff will lock down threads about cheating in any of the main forums as soon as they run across them. Unless they are about OTB tournament cheating and carefully stay on topic.
OK. Thanks.
You can follow a game played between two humans as long as it goes, there's no restiction. Human-human databases are allowed and are not limited to use for openings.
In general, just don't use any chess engines to tell you what move is best etc. and you'll be fine. 
You can follow a game played between two humans as long as it goes, there's no restiction. Human-human databases are allowed and are not limited to use for openings.
In general, just don't use any chess engines to tell you what move is best etc. and you'll be fine.
Now the rationale is clear to me.
Thank you.
What is Game Explorer?
What is Game Explorer?
this-is-what-is-the-game-explorer-is
Launch it from LEARN -> Game Explorer.
In a current thread, cheating was brought up, the thread was locked and we were referred to a special thread. I went to it and it was locked with referral to a group. Does this mean I have to join a group to bring up a question on cheating?
The question is use of the Game Explorer. I notice in the rules that it is OK to use the Game Explorer in Turn-Based chess for opening moves. The integrity issue is that you could follow the Game Explorer games well into midgame and further for best moves. Is it up to the individual to know when the "opening" is over and to no longer use the Game Explorer?
Please let me know where to bring this up if this is not the proper venue.
Thanks.