Awesome game, but hints are cheats

First Ill tell you that Ive completed all master level games without guessing or hints. IT CAN BE DONE! Some levels took me more than an hour though.
I chose not use hints because they are too revealing. One hint solves a cell and changes the difficulty level. I am a fan of Jason Linharts " :) Sudoku", which provides instruction, not cheats.
Using a game analyzer like this would allow better difficulty ratings by sorting games by required techniques and skill level. I solved several master games without pencil marks, and spent hours on others.
One could get more gameplay if the developer added the ability to reflect, rotate, and replay puzzles.

TontoGoldstein about Strimko Gold