Pretty decent puzzle game you got here! For the most part, it seems like a twist on the suika game which removes the size-growing aspect and replaces it with a more simple and traditional match-to-disappear system. Because of this, I didn't necessarily find it as novel or interesting, but it still felt well put-together in terms of overall construction and presentation. It didn't blow me away, but I didn't hate it either: it's ok.
If I had any complaints they'd be that:
It's not that complex of a game, but I felt like the help/tutorial section could've been done a bit better: right now it's just a big wall of text which is difficult to read. Ideally it could be spaced out or edited to be shorter, or even better, it could be replaced with more images/animations/video demonstrations.
I had a bit of a bad first impression, since I played the game on easy, where it's, well, a bit too easy: there just isn't enough variety in piece types to create a fun sort of stacked-up chaos and improvisation that the game wants, leading to me being bored to tears. I know you could say it's my fault, but I didn't know any better and lacked direction: perhaps the game should just direct the player to the ideal experience with just a single difficulty, or maybe having the difficulty increase as you go up in levels, and so on.
I also really feel like the game needs some music, or more pizazz to make up for the lack of music: without it, the game can be painfully dry and silent.
EDIT: Revisited on hard mode and had a pretty good time: really warmed up to the game! Final score: 7470