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Show HN: Play with lasers and mirrors: Jane Street's March puzzle, interactive

3 pointsby gobdovanabout 2 months ago

1 comment

gobdovanabout 2 months ago
Jane Street publishes a puzzle every month, and the March one involves lasers and mirrors.<p>I found it tedious to work with on paper, so I built a more interactive version: place mirrors on the grid and try to make all the lasers turn green.<p>Try it here: <a href="https:&#x2F;&#x2F;ouatu.ro&#x2F;hall-of-mirrors-3&#x2F;" rel="nofollow">https:&#x2F;&#x2F;ouatu.ro&#x2F;hall-of-mirrors-3&#x2F;</a> Original puzzle: <a href="https:&#x2F;&#x2F;www.janestreet.com&#x2F;puzzles&#x2F;current-puzzle&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.janestreet.com&#x2F;puzzles&#x2F;current-puzzle&#x2F;</a> Source code (built with SolidJS): <a href="https:&#x2F;&#x2F;github.com&#x2F;ouatu-ro&#x2F;hall-of-mirrors-3" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;ouatu-ro&#x2F;hall-of-mirrors-3</a><p>It supports keyboard shortcuts to toggle laser visibility and line lengths, left&#x2F;right click to place mirrors, and touch support on mobile that cycles through mirror states.<p>It was fun to make, and hopefully fun to use too.