Hotaru Beam
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Hotaru Beam (lit. 'firefly beam') is a binary-determination logic puzzle published by Nikoli.
Hotaru Beam is played on a rectangular grid, usually of dashed lines, in which numbers in circles appear at some of the intersections on the grid. Additionally, each circle has a dot on one of the grid lines leading into the circle.
Rules (translated from Nikoli)
- Draw a line from each white circle's black dot to any white circle, following the grid's horizontal and vertical markings.
- Lines cannot be drawn from a black dot to another black dot, nor can they be drawn from a white circle not at its black dot to a white circle not at its black dot.
- No crossing or branching of lines is acceptable. At the end, the drawn lines will connect all white circles to form a single, contiguous network.
- The number on the white circle dictates how many times the line you draw from its black dot must bend before it meets another white circle.
