rurytos - Dozer Switch-Backs
Before I begin describing the above devices, I would like to note two things:
1. I try to keep my devices in a grid like pattern. They're not separated by walls or anything, but it should be easy to tell the difference between one device and another. I will describe the devices from left to right, top to bottom.
2. I will make a link in my first post that sends you to my puzzle gallery where, if you think you need practice with ANY skills shown here, you can find a puzzle (or 2, or 5,000,000) about the topic you want to practice.
Now to the description of the devices:
The first device is one we have all seen, it makes the dozer switch directions. This is called a switch-back. The second device shows how to use pipes to feed a box away from the dozer then put it right back in front of it. The third device does this with 4 boxes. As you can see it gets messy fast when adding more boxes. Furthermore, it reverse the order of the boxes, which is not ideal. The fifth device on the end of the first row shows how to do what is called an uphill switch-back. The sixth and seventh devices show how to do an up hill switch-back with 1 or more boxes. The cool thing about these is that they are relatively clean and don't change the order of the boxes. The last device is showing how to use device seven to make a level (not uphill) switch back that doesn't change the order of the boxes. As you can see, ti is much more efficient space-wise even if it is slightly slower.
Now try my Dozer Switch-Back level pack to see how much you know.
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