page_title: Slitherlink
section_title: Corners
hierarchical_section_title: Slitherlink / Solution methods / Exactly 2 or 0 lines at each point / Corners
caption_attribution_description: English: A drawing of a part of a Slitherlink game, showing how a 2 in the corner leads to 2 lines going away from it at the border.
context_page_description: Slitherlink is a logic puzzle developed by publisher Nikoli.
context_section_description: If a 1 is in a corner, the actual corner's lines may be X'd out, because a line that entered said corner could not leave it except by passing by  the 1 again. This also applies if two lines leading into the 1-box at the same corner are X'd out.
  If a 3 is in a corner, the two outside edges of that box can be filled in because otherwise the rule above would have to be broken.
  If a 2 is in a corner, two lines must be going away from the 2 at the border.
caption: A 2 in a corner.
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