Semi-wall stochastic game
The semi-wall game is a Gridworld game played on a 3x3 grid. With player
starting in the bottom left corner and player starting in the bottom right. The goal of the game is to arrive at the money in the centre top - whoever does that first gets a point. If two players try to enter the same spot with even odds one player moves in and the other stays where they are. There is a semi-wall above each player to start with which has a 50% chance of letting them through, otherwise they stay where they are. The game looks as follows:
