24396

The scoring works by collecting sets of three,or more, blue cubes (in a line/diagonal). The system gives points equal to the length of the chain. If,though, a single circle is added on to the end of a chain, only one more point is added, for one circle. I made a square in the center of the grid without a center, it made 12 points; in light of 4 lines of 3 being made by this. Adding a circle in the center makes another 4 lines of 3, from each set of parallel circles. I had 24 points. The maximum points for this puzzle is 40, made with a 4x3 rectangle against one corner x x x x o
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o o o o o a 13th plug makes 40 points(placed in the top left corner in the case of this particular solution).