and is another place for the explaination...
http://support.chess.com/Knowledgebase/Article/View/87/0/what-are-conditional-moves
what is a conditional move?
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I understand the how this makes sense, but how do you execute this?
I made my move, they make their move, then the program will put up Your move has triggered a conditional move - It is your move again
What do I do to execute? - what is next? If I move { then press submit }
It's like I normally moved ! ?? I don't get the chance to choose their move or input my next move.
When your opponent sets up a conditional move, that message gets displayed to you just so you know you can play the next move right away, since you don't need to wait for his response - the conditional move responded for him already. You don't need to do anything special to respond when you see this message, just play as you normally would. There's nothing that limits your freedom, it's mainly there as a time-saver if there's an obvious and forced sequence.
Your move has triggered a conditional move - It is your move again!