win-rate of the current agent vs a snapshot of itself at training start (50% = no better yet, climbing = learning)
// what it learned to value
Each bar is how much the agent values a line pattern. An OPEN line has both ends free (a live threat); a BLOCKED line is walled on one side. Left = its own lines (it builds these, green); right = your lines (it avoids them, red). Bars shift as it trains and as you change the rewards.
// what this agent learned
// use your agent
Share the code so a friend can paste it into Gomoku and play your trained agent.