Thank you baturinsky, but I don't agree with you. maybe with game mechanics yes, but not with the game design.
One huge drawback is that I didn't solve the problem of first 15 seconds and first 3 minutes in the game. so even if people make FULL 9 dots tile in the game they didn't see the goal (why they need to continue doing that). and it's a gamedesign issue. this is what I'm working on right now, and hope in week or 2 I'll solve this issue.
Sims like this issue is the same complexity as to invent a new mechanics. so if someone has any ideas how to improve player experience in first minute I'll be happy to hear that.
My thoughts are at least
1. separate items which match with each others by shapes or colors
2. recreate interface with huge level progress bar and create several tutorials levels where player need to learn how to make double tiles, and which tiles doesn't match.
3. Add leader board (maybe not on this, but for next version for sure)