Fathomrow is a daily logic puzzle. Twenty clerks sit on five benches of four. Each clerk is either innocent or guilty, and each left one sentence.
An innocent clerk's sentence is true. A guilty clerk's sentence is false. Exactly one pattern of marks makes every sentence agree with that rule.
- Read the sentences that are already open. Bench-wide sentences name nobody, so they start unsealed.
- Tap a clerk once to mark innocent, again to mark guilty, and a third time to clear the mark.
- When you mark a clerk, sentences that name that clerk unseal.
- Hint names one seat the open sentences already force. It does not mark the seat for you.
- Fill all twenty seats. The result card gives a copyable grid with no link.
- On a keyboard, arrow keys move, I marks innocent, G marks guilty, Backspace clears, and H asks for a hint.