dickoon wrote:Can anyone give pointers to getting started with Laser puzzles, please? (No pun intended.) I can't even get started with the puzzle type (not trying on today's U-ratsel, trying the 7x7 weekly prize puzzle from the start of the year) and the usual sources - or, at least, the usual English-language sources - aren't coming up with details.
Can I first confirm that you've understood all the puzzle rules correctly?
The laser enters at one arrow and exits at the other.
Some one-sided mirrors are placed at the grid intersections to reflect the beam - the number of mirrors on a particular grid line may be clued outside the grid.
The number of squares passed through by the beam in a row or column may be clued outside the grid.
The beam MUST cross itself at the points marked X, and CANNOT cross - nor even touch - at any other places. Mirrors, as remarked, are one-sided.
The 7x7 Preisraetsel is reasonably straightforward, with just one slightly fiddly piece of logic towards the end of the solve in the bottom couple of rows. Let us know if you need additional nudges!