Play it yourself (click to reveal, right-click or Flag mode to flag) or let Claude try. Claude sees the board as text and picks several moves per turn. The page enforces the rules, so it can't cheat and has to reason its way out.
When Claude finishes a game, its outcome, settings, cost and time are counted anonymously (no personal data) for the live results page. Games you play yourself are not counted.
After each loss Claude writes itself a lesson. Lessons are saved only in this browser and shown to Claude in later games.