The Cipher Board
Think “Victorian police ledger”. Tap a cell → enter a cipher mark. Notes define the unique arrangement.
Mode:
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Difficulty:
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Seed:
—
Solutions:
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Clock:
00:00
Help
Ledger
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Work Area
Case Notes
Tap a case note to highlight the relevant ledger entry.
OPEN
Case loaded. Use the anchors first.
Sanity (generator)
Select a cell.
Ledger Rule:
each row and column must contain
all four cipher marks exactly once
.
Case Brief
Solve the ledger using notes — not guesswork.
Close
Mobile tip:
the cipher marks bar sticks to the bottom.
If a mark repeats in a row/column, those cells are flagged (conflict).
Verify Report
checks: (1) complete, (2) no repeats, (3) every note satisfied.
Hint
finds a forced cell that matches across all remaining valid solutions.
Every case is generated to have
exactly one solution
. If it can’t, it regenerates.