To join this group, you have two methods:

1. simply add the "userbox for Wikibooks Chess" by including {{User Chess}} in your User page.
2. If you do not like userboxes, you can still join by putting [[Category:Wikibooks Chess participants|PUT_YOUR_USERID_HERE]] on your User page.

The strange PUT_YOUR_USERID_HERE is necessary so that the software sorts you in the right letter. For example if a user called "Jimbo" incorrectly puts [[Category:Wikibooks Chess participants]] on its user page he will be listed under the letter "U" because the software will recognise him as "User:Jimbo", but if he correctly puts [[Category:Wikibooks Chess participants|Jimbo]], the software will correctly recognise him as "User:Jimbo"