outcomes (see Figure 8). It is important to keep visiting offshoots of the most promising line in order to accurately calculate value, by generally aggregating more potential outcomes, seeing more clearly as the simulated game nears completion, and discovering tactical surprises. However, it is also important to explore a variety of moves to discover and exploit the best one. The key is to grow a search tree by running many simulations, each time making exploration vs. exploitation choices until reaching a 