Kaggle @kaggle.com · Feb 19 Four-in-a-Row is a “solved” game. Frontier LLMs still can’t play it reliably. 📢 We just launched a new Game Arena leaderboard to test how models reason step-by-step, maintain a mental board and plan moves - no minimax, no game-tree shortcuts.
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The challenge isn’t knowing the rules. Models must navigate a 7×6 grid, account for gravity (pieces fall vertically), anticipate diagonal and vertical threats, and plan several moves ahead all through text alone.