user1589: I'm wondering if there is any chess software or portable chess computer that allows a position to be bookmarked while a variation is examined?
For example, it's possible to download pgn for games analyzed in Chernev's logical chess. However, there isn't a diagram for every position, and occasionally the author outlines alternate moves and their consequences. While it's possible to follow through this analysis on a board and "unplay" the moves back to the point where this divergence from the actual game takes place, this can be time-consuming. What I'm looking for is the opportunity to bookmark a point in the game, follow the variation through, and then click back to the bookmark to continue on with the game, rather than clicking a back arrow for every move that was made.
Thanks

user657: In the days before electronics, I managed this with a pocket magnetic set. I'd follow along playing the game on the board, and when I wanted to explore a variation I set the "return" position on the magnetic set to save until I was done and wanted to go back.
These days every chess database of any stripe will allow you to jump directly to a given move. So you follow along, create a new variation, follow it, and then with one click you jump back to the original position.

user1493: Chessbase is a commercial product that solves your problem.  Any position in Chessbase is in essence a bookmark.  You can just click on the move/position you want to go back to (all the moves are available visually beside the chess board).  I believe the same functionality is available for free with Scid.  

1589: <p>I'm wondering if there is any chess software or portable chess computer that allows a position to be bookmarked while a variation is examined?
For example, it's possible to download pgn for games analyzed in Chernev's logical chess. However, there isn't a diagram for every position, and occasionally the author outlines alternate moves and their consequences. While it's possible to follow through this analysis on a board and "unplay" the moves back to the point where this divergence from the actual game takes place, this can be time-consuming. What I'm looking for is the opportunity to bookmark a point in the game, follow the variation through, and then click back to the bookmark to continue on with the game, rather than clicking a back arrow for every move that was made.
Thanks</p>
 657: <p>In the days before electronics, I managed this with a pocket magnetic set. I'd follow along playing the game on the board, and when I wanted to explore a variation I set the "return" position on the magnetic set to save until I was done and wanted to go back.</p>

<p>These days <em>every</em> chess database of any stripe will allow you to jump directly to a given move. So you follow along, create a new variation, follow it, and then with one click you jump back to the original position.</p>
 1493: <p><a href="http://chessbase-shop.com/en/products/chessbase12_download" rel="nofollow">Chessbase</a> is a commercial product that solves your problem.  Any position in Chessbase is in essence a bookmark.  You can just click on the move/position you want to go back to (all the moves are available visually beside the chess board).  I believe the same functionality is available for free with <a href="http://scid.sourceforge.net/" rel="nofollow">Scid</a>.  </p>
