Yes! So happy to hear this. One thing I was really aiming for with the echo chess gameplay design is the ability for anyone to pick up the game without any prior familiarity with chess or other strategy games, while also offering a pretty exciting challenge for chess GMs and strategy veterans.

The fact that you directly got the solution to that fictional example kinda proves the point that 'type 2' folks (as described in that section of the post) can actually be at a disadvantage compared to the newcomers given their preexisting intuitions and heuristics. Curious to know if you ended up solving some of the main levels in 'classic' mode too.