Edit from the future: I was super humbled when the creator of the game, Brady, instructed me that I had been playing the game incorrectly. Therefore all of what is below is based off of an improper ruleset to the game. The real rules make the game much deeper (and less obviously solvable)
I was gifted a game from the Marbles Brain Store for holidays this year called Otrio.
Its based off of Tic-Tac-Toe where a row of three O’s that are the same or ascending/descending in size or three concentric O’s gives victory. Below are some examples of victories:
Its unfortunately also based on a easily solved game, tick-tac-toe. After about ten minutes we determined that player one cannot lose if they play correctly. Here the solutions:
Player 2 plays in a middle edge:
Player 2 plays concentrically:
Player 2 plays in a corner: