• Copyright (C) 2005-2014 Chengtao Chen
• Copyright (C) 2014 Chengtao Chen, Kai Sun
• Copyright (C) 2015-2016 Chengtao Chen, Kai Sun, Tianyi Hao

Xl (alias Niren) is a competitive renju program (NOT support gomoku), originally designed by Chengtao Chen. This is a modified version which supports Gomocup protocol.

Features:

• Support Gomocup protocol. Users can run xl with GUIs which support Gomocup protocol such as Piskvork.
• Keep all features of original xl. Users can enter the orignal CUI by typing command xlmain.

The original document written by Chengtao can be found at: http://www.aiexp.info/files/introduction_to_xl.pdf ; the original source code written by Chengtao can be found at: http://www.aiexp.info/files/niren_source.zip (engine and its CUI). It is a pity that the source code of its GUI part was lost.

Xl（又名niren）是一个有竞争力的五子棋程序（仅支持禁手规则），它的最初版本由陈成涛设计。本项目为xl的修改版，它使得xl支持了Gomocup协议。

陈成涛介绍xl设计的原始文档可见：http://www.aiexp.info/files/introduction_to_xl.pdf ； 陈成涛提供的xl原始代码可见：http://www.aiexp.info/files/niren_source.zip （引擎及它的字符界面）。可惜的是xl的图形界面代码已丢失。

特性：

• 支持Gomocup协议，用户可通过支持Gomocup协议的界面程序（如piskvork）调用xl。
• 保留了原始xl的所有特性。用户可以通过命令xlmain进入原始的字符界面。