Cash Out the Killer

You have solved a thousand Sudoku grids. Not one of them ever accused anybody of murder.

Tonight, a casino owner lies dead behind his own cashier's cage. The doors are locked, nobody has cashed out, and 41,496 numbered chips are still sitting on the floor of the Meridian Club. One of them was held by the person who killed him.

Here is the trouble with most puzzle books. You fill the last square, you close the cover, and nothing has happened. No stakes. Nothing riding on whether you were genuinely sharp or merely lucky.

Cash Out the Killer changes the arithmetic. The club's pit boss hands you his entire chip ledger and fifteen clues he swears are true of the guilty chip alone. Some describe the number itself, its digits, its parity, and what it adds up to. Others pin it to a place in the ledger, by page or by section. The two kinds never overlap, and you will need both to close the net. Cross off the innocent until only one number remains. That number is your killer.

Benefits:

• 41,496 chips across 14 named sections of the club, from The Slot Hall to The Vault

• 15 clues, plus a sealed 16th so you can check your own answer

• One solution and one only, provable by pure logic, never ambiguous, never a coin toss

• No mathematics harder than adding five digits together

• Broad clues that clear whole pages, sharp ones that take real patience

• Hours of screen-free solving you can stretch across a week

• Requires nothing but a sharp pencil and a suspicious mind

• An outstanding gift for Sudoku solvers, logic fans, and armchair detectives

An innocent cashier has been arrested for this, and the house is content to let her take the fall. She has until morning. The guilty number is in these pages right now.

Sharpen your pencil. Name the number.

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