线上黑白点 Kropki On Line

标准数独基础上，黑点两侧数字为2倍关系，白点两侧数字之差为1。仅有每条线上的相邻格中所有符合条件的地方都被点标记，1和2之间可能是任意一种标记。

Classic rules applied. Additionally, a black dot means that one of the neighboring digits has the double value of the other digit. A white dot means that the difference of the neighboring digits is exactly one. If there is no dot between two cells only adjacent by the line, none of the constraints is valid. Dots between 1 and 2 will be white or black.

简单地说，就是只有线上部分是全标的黑白点数独。值得一提的是，如果两格都在线上、彼此相邻，但不由线直接联通，这两格之间无需呈现标记。

So, actually, thats's a Kropki that only all marked on lines. And, it should be noted that if two cells (both on the line and adjacent) are not connect by the line directly, there won't be a mark between them.

作者Author：风车

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