This release notes document provides instructions for upgrading to phpChess version 4.2.1. It includes quick installation steps which involve copying files to a server, renaming a configuration file, and running an installation script. For upgrades from older versions, it advises making backups and deleting existing files before copying over the new files and configuration. The document also provides a quick upgrade guide and notes for upgrading from versions older than 4.1.

1. Welcome to release 4.2.1
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This software is provided under the GNU Affero General Public License,
the terms of which can be referenced here:
https://www.gnu.org/licenses/agpl.html
We are asking you to be please give phpChess and its contributers credit when
using, distributing, modifying otherwise working with the software.
please ensure you read the intro.rtf, and visit http://www.phpchess.com/?
page_id=425 - which is the installation and upgrade Q&A
Quick Installation step for phpChess:
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a) copy all files and folders to you server using your favourite ftp program
!!!!IMPORTANT!!!!
b) rename the bin/config.txt file to config.php
!!!!IMPORTANT!!!!
c) Using a browser and open the installtion file http:///www.[your server
address]/phpchess/install/
d) follow the instructions
Quick upgrade guide (4.1 or higher):
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a) copy all files over the existing files using your favourite ftp program
b) using your browser open the upgrade file http://www.[your server
address]/phpchess/install/upgrade.php
c) follow the instructions
from a phpChess version older than 4.1:
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!!!! Please note that older games will be automatically finished as new fields
are added to the database!!!!
a) make a back-up of all your phpChess files on the server! - especially
bin/config.php
b) make sure you delete all existing phpChess files from the server!!!
c) once you have copied the new files onto the server
--> copy from your back-up the config.php file from the bin directory back to
the server into the bin directory
--> rename the file bin/installed.old to bin/installed.txt
d) now you can go on your server and open the install directory in your browser.
If you upgrade without these steps you will get issues and you will likely waste
additional time.
If you are installing phpChess new, there are no such issues to worry about.
Have fun, all the best
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