Implemented! I figured you probably don't want to have a button that immediately restarts the level, especially if it's R and you use WSAD ^^' So: hit R once to open in-game menu, hit R again to restart. Q gets you back to the Main Menu.
@kosh67 due to the 1H clues in the cross corners, the only solution or 26 is the "starburst" looking one. Anything else wouldn't have a lone cell in range of the 1H clue.
Your example before 26 is indeterminate (3x3 with 1 heart in center). At the end of the puzzle you cannot tell what is in the center cell. Also, the level would end once you marked the top left corner, there would be no need to clear out the cells to right and below.
You're sitting on a winner here, just needs a few tweaks:
Proper save on exit (if I didn't go back to the menu, it didn't save my progress).
Better controls - makes it to easy to overshoot, especially on the moving platforms
Undo at the movement level - while resetting a single blueprint is ok, a simple undo of the last X moves would go a lot further. Or do both
More levels - some good puzzle design here, lots of potential for more variations
All three endings were done well.
Allow me to turn around in place. Standing on the edge of a platform the wrong way then falling off when trying to turn around is a PITA. Unless it's intentionally part of the mechanic...
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Yes, you are correct. I will implement this in future versions of the game!