Zhili Shuang Cheng Chess · 直隶双承棋
The shared-piece game on a star-shaped board whose centre lines allow jumps — so a blocked position may not be blocked at all.
六角星盘的中线能跳：看着已经堵死的局面，其实还留着一条跳路。
四子围堵，棋子还能跳行
Four pieces each, plus a jump move
玩法要点
- 棋子：双方各 4 枚，另有 1 枚公用
- 棋盘：11 点，六角星形
- 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; the straight horizontal and vertical center lines also allow jumping one piece to an empty point beyond.
- 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格，贯穿中心的横竖直线还可跳过一子到其后空点。
- 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 11 points arranged in a star: two top corners meet at a hub, the hub connects to each end of a diamond whose center holds the shared piece, and the bottom mirrors the same pattern down to two more corners.
One player's 4 pieces start on the two top corners, the top hub, and the diamond's left end. The other player's 4 pieces start on the diamond's right end, the bottom hub, and the two bottom corners. One more piece — shared by both players — starts at the exact center; the two points between each hub and the diamond's ends start empty.
Movement, Jumping, and the Shared Piece
Take turns moving one of your own pieces, or the shared piece at the center, one step along a line to an adjacent empty point.
Two real straight lines run through this board: one vertical line through both hubs and the shared piece, one horizontal line through both diamond ends and the shared piece. Along either line, any piece may jump over one piece to land on the empty point just beyond it.
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 11 个棋点，排成一个六角星：上方两个角连着一个枢纽，枢纽再各连一个点到菱形左右两端，中间是公用棋子；下方枢纽同样各连一个点到菱形左右两端，再连两个角。
一名玩家的 4 枚棋子摆在上方两角、上方枢纽和菱形左端；另一名玩家的 4 枚棋子摆在菱形右端、下方枢纽和下方两角。正中心另外放一枚谁都能用的棋子，枢纽和菱形端点之间的两个点开局是空的。
行棋、跳行与公用棋子
双方轮流选一枚自己的棋子，或者选正中心那枚公用棋子，沿连线走一步到相邻的空棋点。
棋盘上有两条真正的直线：竖直贯穿两个枢纽和公用棋子的一条，横向贯穿菱形左右两端和公用棋子的一条。任何棋子都可以在这两条直线上，越过一枚棋子直线跳到再往前的空棋点。
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。