This Chess app runs its rules engine and AI in your browser and needs JavaScript. / 本站的国际象棋规则引擎与 AI 在浏览器中运行，需要启用 JavaScript。
Skip to content
♞
Chess
chess.ningh.org
Home
Play
Learn
EN
中
← Lessons
Sacrifice Mates
Elementary
Step 1 / 5
1
a
b
c
d
e
f
g
h
2
3
4
5
6
7
8