[rrobukef]

It is a neat game. With a bit of trying you can find some patterns:

* Every tile has two orientations 0 and 180 degrees which allows to cut a lot of possibilities for small fields. * Three tiles can be flipped together, meaning if you have one or two tiles unsolved, your idea won't work out. * Large fields have more solutions.

Sadly I found some bugs:

* World generation does not work correctly: there is an unmovable field (nice idea!) but during generation it gets moved. This makes some puzzles unsolvable. The randomizer should ignore this field. * The undo function has some issues undoing the wrong move or skipping a move. Fully undoing a puzzle does not always result in a solution. If this happens while you're playing you get locked.

[jagged-chisel]

> Three tiles can be flipped together

How do you make that happen? I haven't stumbled on that yet. I did discover, after playing for some time, that I don't have to swap adjacent tiles.

[thunderrabbit]

I guess @rrobukef means if you flip A and B repeatedly, they just swap positions and reverse orientation each time.

But if you flip A and B, then B and C, then A and C, you get B and C to swap positions without changing their orientations.