{"reason": "Solver failed to provide valid regex pattern", "solver": "claude 3.7 sonnet", "winner": "claude 3.7 sonnet (high2)", "players": ["claude 3.7 sonnet", "claude 3.7 sonnet (high2)"], "proposer": "claude 3.7 sonnet (high2)", "game_over": true, "currentTurn": 1}