Echo Chess: The Quest for Solvability
Hey HN! I&#x27;m sami, the creator of echo chess. This is the true story of diving way too deep into a rabbit hole of chess, ML, and puzzle design. Hope you enjoy the read.<p>Originally built this chess variant as a fun hack but it really escalated since then. It&#x27;s a single-player puzzle game. You&#x27;re playing white, there&#x27;s no opponent, and you need to clear the board to win. Every time you capture a piece, you become the &#x27;echo&#x27; of that piece.<p>There&#x27;s also an &#x27;endless&#x27; mode with infinite levels generated in real time and validated by ML to ensure solvability. Took forever to make it work but it now has 99% accuracy. You can play the &#x27;classic&#x27; mode here: <a href="https:&#x2F;&#x2F;echochess.com&#x2F;" rel="nofollow noreferrer">https:&#x2F;&#x2F;echochess.com&#x2F;</a> and endless here: <a href="https:&#x2F;&#x2F;echochess.com&#x2F;?endless" rel="nofollow noreferrer">https:&#x2F;&#x2F;echochess.com&#x2F;?endless</a><p>Happy to answer any questions.