Sand Loop Level 227 Solution

Step 1: Create initial direct paths for sand to flow into their respective cups.

From the left sand source, draw a curved line downwards and slightly right, leading towards the opening of the left cup. Immediately after, draw a separate curved line from the right sand source downwards and slightly left, leading towards the opening of the right cup. Ensure the second line intersects the first line at a point near the central area.

Sand begins to flow from both sources, with left sand entering the left cup and right sand entering the right cup. The sand streams should momentarily interact at their intersection.

Step 2: Enable cross-routing of sand to ensure both cups receive sand from both sources for efficient filling.

From the existing path of the left sand (after its initial curve), extend a new line further to the right, guiding it past the central red blocks and downwards towards the right cup. Similarly, from the existing path of the right sand, extend a new line further to the left, guiding it past the central red blocks and downwards towards the left cup. Ensure these new extensions also intersect the existing paths to allow for sand splitting.

Observe that sand from the left source is now splitting, with some going to the left cup and some being redirected to the right cup. Simultaneously, sand from the right source is splitting, with some going to the right cup and some being redirected to the left cup. Both cups should continue to fill, now with sand from both sides.

Q: How do I make sand from the left go to the right cup and vice versa?

A: You need to draw intersecting lines. After creating initial paths to each cup, extend new lines from these paths that cross over each other and lead to the opposite cup, allowing the sand to split and redistribute.

Q: What is the purpose of the red blocks in the middle?

A: The red blocks are obstacles that prevent direct straight lines between opposite sand sources and cups. You must draw curved or extended lines to route the sand around them for cross-flow.