Reversi · 黑白棋
Every move flips a whole line of discs to your colour. Being far ahead in the middle of the game usually means you are losing.
每一手都把一整串子翻成自己的颜色。中盘领先太多，往往正说明你在输。
一子夹住对方一串棋，翻成己方颜色
Sandwich a line of the rival’s discs to flip them to your color
玩法要点
- 棋子：共 64 枚，黑白各半
- 棋盘：8×8，共 64 格
- 获胜：终局时棋子多的一方赢
Quick start
- Place a disc on an empty square to sandwich and flip a continuous rival line horizontally, vertically or diagonally.
- Every move must flip discs; a side with no legal placement passes.
- Finish when the board is full or neither side can move; more discs wins, with equal counts a draw.
快速上手
- 在空格落子，夹住连续敌子并全部翻色，横竖斜都算。
- 每步必须翻子；无处可下时自动跳过回合。
- 棋盘满或双方都无处可下时结束，盘上子多者胜，同数算和。
Rules
Start With Four Discs
The four center squares start with two black and two white discs, matching colors on each diagonal.
Who moves first can change from round to round — it doesn’t change which color you’re playing.
Sandwich a Line, Flip the Whole Run
After placing a disc, if it and another one of your own discs sandwich an unbroken run of the rival’s discs along a straight line, flip that entire run to your color.
All eight directions count — horizontal, vertical, and diagonal — and one move can flip more than one line at once.
A Move Must Flip Something
Every move has to flip at least one rival disc — you can’t place a disc that flips nothing.
A square that wouldn’t flip anything simply isn’t a legal move.
No Move Means You Pass
If a player has no square anywhere on the board that would flip something, their whole turn is skipped and play passes to the other side.
A player who does have a legal move must make one — passing is never optional.
Count Discs at the End
The game ends once the board is full, or neither side has a legal move.
Whoever has more discs on the board wins; an equal count is a draw.
Timer
Each turn lasts 60 seconds. When time runs out, the turn passes to the other side automatically.
You can change the difficulty anytime in Game Settings.
规则详解
开局摆四子
棋盘正中间的四个格子，摆上两黑两白，斜对角同色。
谁先手每局可能不一样，不影响自己执的棋子颜色。
一子夹一串，整串翻色
落下一子后，如果一条直线上，己方新落的子和另一颗己方棋子之间，夹着连续一串对方的棋，就把这一串棋全部翻成自己的颜色。
横、竖、斜八个方向都算，一步棋可以同时翻好几条线。
能翻子才能下
每一步棋都必须至少翻一枚对方的棋，不能白放一子不翻子。
哪个格子都翻不了子，这一步就不能下在那里。
无子可下就跳过
轮到一方时，如果棋盘上找不到任何一个能翻子的格子，这一整轮就跳过，换对方接着下。
只要还有能下的地方，就必须下，不能主动跳过。
终局比子数
棋盘下满，或者双方都无子可下，游戏结束。
这时棋盘上谁的棋子多，谁就赢；一样多算平局。
计时
每步限时 60 秒，时间到了会自动换对方走。
可以在"对局设置"里换一个难度，随时都能换。