Puzzle 64 of 100

Reverse three lines

Goal

Reverse the order of the three lines: make Y follow C, Z follow B, and W follow A.

Die: 17 by 7 squares
Layers: Metal, Metal 2, Via
Inputs: A, B, C
Outputs: Y, Z, W

New in this puzzle

One line on each layer

Each layer joins its own squares wherever they touch. Where two lines cross, one must be on metal and the other on metal 2, and a line may change layers through a via as often as it needs to.

Hint

Every pair of lines must cross once. Two metal 2 lines that cross are joined, just as two metal lines are, so at each crossing put one line on metal and the other on metal 2. Swap one pair of neighbors at a time.

Solution

This is the game's reference drawing for the puzzle. It meets the goal and passes the design rules. Other drawings can pass as well.

Top View of the solved die for puzzle 64, Reverse three lines, with the Side View below it. — Top View of the solved die, captured from the game. Paths that carry a high level at the moment shown are lit. The Side View below cuts through the row between the dashed lines.

The game window in Isometric View with the solved die for puzzle 64, Reverse three lines, the guide, and the scope. — The whole game window in Isometric View. The scope on the right compares each output with its target band, and the message above it confirms that the drawing passes.

Solution drawing for puzzle 64, Reverse three lines, drawn on a numbered grid with every layer in its game color and pattern. — The solution on the grid. Squares are numbered from the top left corner, so you can count them.

Legend

Metal49 squares
Metal 218 squares
Via4 squares
Input padA, B, C
Output padY, Z, W

About the drawing

The drawing uses 54 of the die's 119 squares.
The die starts empty, so you draw every square.
4 vias join metal 2 to the metal under it.