View source for Running Trail

[[File:Running_Trail-01-sam.jpg|200px|thumb|right|'''Running Trail''' example, From: 23rd WPC Instrucion Booklet © 2014, UK Puzzle Association]]

'''Running Trail'''(待定中文名：等距小徑) 。

==Rules / 规则==
Draw a trail which starts and ends at the flag in the top left corner of the grid and visits every cell except for those occupied by a tree. The trail moves orthogonally between the centre of cells and does not touch or cross itself. The trail is divided into sections of equal length. Each intermediate checkpoint is marked by a flag.
從表格左上角的旗幟開始, 畫一條環狀的路徑回到原點。這條路徑必須經過表格中除了樹以外的每個格子。而路徑本身只能直向或橫向連接, 且不能碰到或跨越自己。整條路徑被旗幟分成等長的路徑。也就是在每段旗幟到下個旗幟之間經過的格子數都相等。

==Solving techniques / 解题技巧==
*首先先算總格數, 扣掉樹及旗幟, 就知道空格有幾格。
*旗幟數量代表有幾段路, 格數除以旗幟數就知道每段路有幾格。意思就是旗幟和旗幟間空格數。
*第二步再去推, 若第一格是奇數, 那麼最後一格就是偶數。同樣去區分奇數格和偶數格, 就會發現有一半旗在奇數, 一半旗在偶數, 然後就用基本技巧, 再搭配間隔的距離, 就解出來了。

[[File:Running_Trail-01-sol.jpg|200px|thumb|right|'''Running Trail''' example, From: 23rd WPC Instrucion Booklet © 2014, UK Puzzle Association]]

==History / 历史==
*曾出現於第23屆WPC Round 2 第6題

==See also / 相关词条==
*[[Woodland Trail]]


==References / 参考资料==
*[http://www.uk2014.org/] 23rd WPC 官網

==External links / 拓展阅读==
*To be edited

[[Category:Puzzlelist]]
[[Category:Make_the_Loop]]