We've been asking for this for some time. We already have a nice go renderer, and basic card-linking functionality for magic-the-gathering, both of which have been great. Now that something has been written for chess, our 6th most popular game, could we please have the same functionality enabled here?
This would be nice on occasion, but... At present, it would interfere with the Go renderer. Until such a time as these can be integrated, I would recommend just using the dedicated Chess site for questions that would benefit from this.