The Board tap a cell to cycle ✕ → ● → blank · right-click / long-press reverses
Board open · 0/5 systems placed
How to play
Each of the five AI systems maps to exactly one business context, one failure mode, one missing decision, and one control that would have helped — a one-to-one match in every block. Use the clues to place a ● where a pairing is confirmed and an ✕ where it's ruled out. With auto-eliminate on, confirming a ● crosses out the rest of that row and column for you. When every block is fully resolved, close the case. Nothing here fails in the storybook way — trust the clues, not your priors.