Rules: Some roads are hidden in the grid. A road is a one-cell wide snake that starts and stops in a circle, and does not touch itself. A circle represents start cell, or stop cell, or a signpost. Every road must include three circles - one signpost, start cell and stop cell. Signposts cannot be the mid point of the road that they belong to. Roads cannot overlap other roads. All cells must be part of a road( No free cell can remain). Some signposts may be given.
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