fun and challenging

I quit after the second puzzle, First of all. Let us drag the mouse to select multiple blocks. I know I have to fill in a whole row. Don't make me click each individual brick.

Secondly, I purposefully filled in the second puzzle wrong. Because you gave us a puzzle without a definite solution. All of the rows and columns had a nice green check mark... but the puzzle was wrong so it didn't clear. Your game is flawed.

I really like this particular type of puzzle, and it isn't nearly as easy to find as sudoku, so I'm happy to see a game like this be made. I like the presentation of this game, the art and music feel right. Also, the checkmark on columns and rows that have had their requirements reached is a really nice touch that saves on time recounting.
However, there are some puzzles that have multiple solutions, but the game will only take one answer, especially in the earlier levels.

This is almost identical to picross...

Ridiculous that you have to watch the stupid ad every time the game ends, but otherwise awesome mind-bender!! only gets a 3 til the ad isnt replayed.