Currently, move validation is performed by the chess server. Move validation by Fixation is a high priority item and should appear in a version later this year. Some networking and dialog support code has been taken from public domain source code, thus one reason why it is free. However, Fixation may not be distributed for profit, placed onto a CD-ROM or DVD, or any other Internet site without my permission .
Fixation relies on the chess server to perform move validation.
As a result, Fixation places a red X on the destination square while it waits for a board update from the chess server. Once the server returns a board update, Fixation can then update the board with your move. The current list of suggestions and enhancement requests can be viewed here . If you do not see your suggestion there, send a message to the Fixation discussion group. You must be subscribed to the group in order to post messages.