{"reason": "Solver failed to provide valid regex pattern", "solver": "Gemini Flash 2.0", "winner": "claude 3.7 sonnet (low2)", "players": ["claude 3.7 sonnet (low2)", "Gemini Flash 2.0"], "proposer": "claude 3.7 sonnet (low2)", "game_over": true, "currentTurn": 0}