Shuang Cheng Chess: Roosters Contend for the Perch · 双承棋之雄鸡争占
One point here can never be occupied, but it can be jumped. The empty well turns out to be the most useful spot on the board.
盘上有一个点永远不能落子，却可以跳过去——空着的那口井，反倒是最有用的位置。
四子围堵，棋子可跳行，井位不能落子
Four pieces each, pieces can jump, one point can never be occupied
玩法要点
- 棋子：双方各 4 枚，另有 1 枚公用
- 棋盘：12 点，含 1 个不能落子的井位
- 获胜：让对手无棋可走
Quick start
- A player who has no legal move at all — not even the shared piece — loses right away.
- Step with your own or the shared piece, or jump one piece along a straight line to an empty point; the well cannot be occupied but acts as a jumpable obstacle.
- After a shared-piece move, the rival must move another piece before using the shared piece again.
快速上手
- 轮到某一方却无棋可走——连公用棋子也没法动——就算输了。
- 己子或公用子沿线走一步，或沿直线跳过一子到空点；“井”不能停，但可当障碍跳过。
- 刚动过公用子，下一回合对方必须先走别的棋，不能马上再动它。
Rules
Board and Setup
The board has 12 points: a row of four on top and a row of four on the bottom, plus four more points in the middle row — the shared piece starts on the right side of that middle row. The middle-left point is marked with the character 井 ("well") — no piece can ever step onto it or land on it via a jump. Just past 井 sits one more easy-to-miss empty point whose only edge connects to 井 itself — the only way to reach it is by jumping over 井 from the point on 井's other side. The remaining middle point is an ordinary empty spot.
One player's 4 pieces start on the top row, the other player's 4 pieces start on the bottom row. One more piece — shared by both players — starts on the right side of the middle row.
Movement, Jumping, and the Shared Piece
Take turns moving one of your own pieces, or the shared piece, one step along a line to an adjacent empty point. No capturing.
The board has 5 real straight lines (the top row, the bottom row, the two vertical lines running through 井 and through the other middle point, and the horizontal line running from the point beyond 井, through 井, to the other middle point). Along any of these, any piece may jump over one piece to land on the empty point just beyond it. The 井 point is special: no piece ever actually sits there, but a piece passing beside it may still jump over it as if it were occupied — it just can never be the piece that steps in or lands there.
If the shared piece was just moved, the other player cannot move it on their very next turn — it becomes movable again once that player has taken one turn with a different piece.
Winning
A player who has no legal move at all — not even the shared piece — loses right away.
The core idea is to use the shared piece together with your own pieces to trap the other side's pieces in a corner.
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
棋盘与开局
棋盘有 12 个棋点：上面一排四点、下面一排四点，中间还有四点，公用棋子靠右站在中间。中间左侧那一点标着“井”字——这个点只能被跳过，任何棋子都不能走进去或跳到它上面；井字再往左，还有一枚不起眼的空闲棋点，唯一一条边就是连去井——所以只能靠棋子从井右边的那一点跳过井才能到达；中间另一点是普通空位。
一名玩家的 4 枚棋子摆在上面一排四点，另一名玩家的 4 枚棋子摆在下面一排四点。靠右的中间位置放一枚谁都能用的棋子。
行棋、跳行与公用棋子
双方轮流选一枚自己的棋子，或者选公用棋子，沿连线走一步到相邻的空棋点；不能吃子。
棋盘上有 5 条真正的直线（上排、下排，贯穿“井”和贯穿中间空位的两条竖线，以及井左侧那枚棋点—井—中间空位这一条横线）：任何棋子都可以在这些直线上，越过一枚棋子直线跳到再往前的空棋点。“井”字那一点比较特殊，虽然永远不会真的有棋子停在那里，但棋子经过它旁边时，可以像它被占着一样跳过去——就是不能走进去或停在上面。
如果刚才走的是公用棋子，下一回合对方不能马上再走它，要等对方走完一步别的棋子之后，公用棋子才能再被动。
谁赢
轮到某一方却无棋可走——连公用棋子也没法动——就算输了。
围堵的思路：用公用棋子和自己的棋子一起把对方的棋子堵在角落里。
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。