{"reason": "Solver failed to provide valid regex pattern", "solver": "claude 3.7 sonnet (high2)", "winner": "Mistral Nemo (12B)", "players": ["claude 3.7 sonnet (high2)", "Mistral Nemo (12B)"], "proposer": "Mistral Nemo (12B)", "game_over": true, "currentTurn": 1}