Circuits: VLSI

Puzzle 3 of 100

Two separate signals

Goal

Connect A to Y and B to Z, and keep the two paths apart.

Die
14 by 9 squares
Layers
Metal
Inputs
A, B
Outputs
Y, Z

Go to the solution

New in this puzzle

Keeping signals apart

Two shapes that share an edge join into one. Shapes that meet only at a corner break a design rule, so leave an empty square between separate paths.

Guide

  1. Connect A to Y.
  2. Connect B to Z. Keep an empty square between the two paths everywhere.

Hint

Shapes on one layer join wherever their edges touch, and the design rules do not allow two shapes to meet only at a corner. Leave at least one empty square between the paths.

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 3, Two separate signals, 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 3, Two separate signals, 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 3, Two separate signals, 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

  • Metal32 squares
  • Input padA, B
  • Output padY, Z

About the drawing

  • The drawing uses 32 of the die's 126 squares.
  • The die starts empty, so you draw every square.