To become a strong player, you will find it very helpful to begin to compile your own personalized chess theory. With the Chess Workbook Authoring Tool, you can build and catalogue your own 'personal theory', as recommended by GM Lev Alburt in his book Chess Training Pocket Book. And if you have the companion software Chess Workbook, you can use the files (CWB files) you created as training workbooks and so test yourself how well you understand each position. With this tool, you do not need to buy another traning softwares, ever. Put your idle chess books to good use. Create customized training databases for yourself. This tool is also perfect for trainers and coaches so they can build customized workbooks for students with different needs. Those who are offering chess courses by e-mail and even book authors will find this tool very helpful.