Should be a unique solution – Tic-Tac-Logic: X or O? Review

I love this app. However, especially when getting into the harder levels, I will solve a puzzle but the game doesn't recognize it as solved. I've met all the requirements to solve it, but because there is more than one solution, when my solution doesn't match the one saved to the app, it doesn't recognize that I've solved it. Would be better if either there were unique solutions or if it recognized both.
Review by Puzzlermonkey on Tic-Tac-Logic: X or O?.