All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > General
Laser Reconstruction: 6 targets, 5 mirrors (Posted on 2007-12-14) Difficulty: 3 of 5
Two lasers enter a limitless space in which there are 6 targets.
One laser enters vertically downward while the other is initially horizontal from the right.

You have 5 mirrors, each of which can deflect a beam at either 45 or 135.

Each laser beam passes through all targets only once.
Each segment of one laser beam passes exactly through 1, 2 and 3 targets
while those of the other never pass through more than two.

You may care to challenge yourself by fitting all targets into a 4 x 4 grid.
As a further challenge fit the 6 targets into a 4 x 4 grid, use the same rules but use only 4 mirrors.

Note: 1. Brian Smith's Laser Puzzle was the inspiration for this.
2. I acknowledge Brian Smith's thoughts re the use of a 4 mirror version.

See The Solution Submitted by brianjn    
No Rating

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: 4 mirrors, 4x4 grid and 5 mirrors 4x3 gridbrianjn2007-12-26 04:32:54
Solution4 mirrors, 4x4 grid and 5 mirrors 4x3 gridBrian Smith2007-12-19 13:09:09
re(2): 4 mirrors, 5x5 grid - profession??Brian Smith2007-12-17 01:32:22
re: 4 mirrors, 5x5 grid - profession??brianjn2007-12-16 03:25:19
4 mirrors, 5x5 gridBrian Smith2007-12-16 01:58:16
Solutiona 4-mirror solutionDej Mar2007-12-15 09:39:53
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (6)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2017 by Animus Pactum Consulting. All rights reserved. Privacy Information