The level with a two-in-one note breaks if I fail once; if I fail, the box closes and does not open again, no matter how long passes or if I turn the key again.

The time it takes for the box to reopen after a fail is a bit too much, since I thought I had to twist the key to restart, but that just made me think I had to arrange the notes within the second it took for the swan to move a space. I figured it out after a bit though.

Arrange the notes so that the swan gets to the other side. 1 note, 1 step. Pretty fun puzzle game.

:3

Thanks for reporting the issue and thanks for playing! :D We noticed some notes break the game when placed on top of each other and such, so we will be fixing those issues asap!