user2872: I would like to play correspondace chess, but in order to use it as training for my openning repertoire, I want to agree with the oponent which opening to use.
For example, We bith give a list of openings/variations and agree in which position start playing. Is any website with this functionality?

user1201: Gameknot allows mini-tournaments to specify a starting position for all games in the tournament. This is a popular way to explore openings; I do it frequently.
Mini-tournament participation does require that you've completed a few games on the site already though.

user1761: In Red hot pawn, you can create an open invite with any starting position you like. With free account, the number of simultaneous unfinished games is limited to 6.

user3890: On Chess.com you may set an open challenge with a predetermined position (to choose from a list, click the "Show more options" box), and if one game is not enough you even have the option of joining a tournament, some of which have the starting position of a certain opening or variation.
With a free account, you are allowed to issue as many challenges as you want, join as many official tournaments as you want and join one non-official tournament. If you want to create your own, you must go premium.

2872: <p>I would like to play correspondace chess, but in order to use it as training for my openning repertoire, I want to agree with the oponent which opening to use.</p>

<p>For example, We bith give a list of openings/variations and agree in which position start playing. Is any website with this functionality?</p>
 1201: <p>Gameknot allows <a href="http://gameknot.com/start-minit.pl" rel="nofollow">mini-tournaments</a> to specify a starting position for all games in the tournament. This is a popular way to explore openings; I do it frequently.</p>

<p>Mini-tournament participation does require that you've completed a few games on the site already though.</p>
 1761: <p>In <a href="http://www.redhotpawn.com/" rel="nofollow" title="Red hot pawn">Red hot pawn</a>, you can create an open invite with any starting position you like. With free account, the number of simultaneous unfinished games is limited to 6.</p>
 3890: <p>On <a href="http://www.chess.com/" rel="nofollow">Chess.com</a> you may set an open <a href="http://www.chess.com/echess/create_game" rel="nofollow">challenge</a> with a predetermined position (to choose from a list, click the "Show more options" box), and if one game is not enough you even have the option of joining a <a href="http://www.chess.com/tournaments/myhome" rel="nofollow">tournament</a>, some of which have the starting position of a certain opening or variation.</p>

<p>With a free account, you are allowed to issue as many challenges as you want, join as many official tournaments as you want and join one non-official tournament. If you want to create your own, you must go premium.</p>
