I did https://arcprize.org/play?task=05a7bcf2 correctly, but one of the examples doesn't match the rule I used. Are the examples supposed to contain mistakes/noise? Did I find a bug? Did I get the rule wrong?
Here's how I understand the rule: yellow blobs turn green then spew out yellow strips towards the blue line, and the width of the strips is the number of squares the green blobs take up along the blue line. The yellow strips turn blue when they hit the blue line, then continue until they hit red, then they push the red blocks all the way to the other side, without changing the arrangement of the red blocks that were in the way of the strip.
The first example violates the last bit. The red blocks in the way of the rightmost strip start as
Here's how I understand the rule: yellow blobs turn green then spew out yellow strips towards the blue line, and the width of the strips is the number of squares the green blobs take up along the blue line. The yellow strips turn blue when they hit the blue line, then continue until they hit red, then they push the red blocks all the way to the other side, without changing the arrangement of the red blocks that were in the way of the strip.
The first example violates the last bit. The red blocks in the way of the rightmost strip start as
but get turned into Every other strip matches my rule.