Daily case

Frontier Logic Daily No. 100 December 13, 2026 Rookie

The Nine Mile Flat Report: a free Western logic-grid puzzle

Word came into the sheriff's office a little after noon: trouble out by Nine Mile Flat, and four riders who'd all been somewhere else, to hear them tell it. There's an answer in here. Find it.

This free Rookie logic-grid puzzle has 4 suspects, 4 locations, and 4 pieces of evidence. New to logic grids? Start with the pencil-solving guide.

How to mark the grid

●
These two belong together.
✕
These two are ruled out.
blank
Still undecided.
How to play

Click, tap or press Enter on a cell to cycle it: blank, then ● for a confirmed pairing, then ✕ for one you have ruled out. Nothing fills itself in — the deductions are yours to make. Use the arrow keys to move around the grid.

Fill obvious Xs does the bookkeeping only: for each ● you have marked, it crosses off the rest of that pairing's own row and column. It never adds a ●, never reads a clue, and never changes a mark you made.

On a narrow screen the grid scrolls sideways.

Every case has exactly one solution, and it is always reachable by deduction alone. Nothing here guesses for you, and Check will not tell you which mark is wrong.

Clues and evidence

  1. Everyone agreed Trader Nell Dabney was at Sabino Rim.
  2. Everyone agreed: Tobias Creel had the running iron.
  3. You can rule out Hackberry Tank for Wagon Boss Cass Deverell.
  4. Anvil Ben Ahrens had nothing to do with the cut picket line.
  5. Nobody could connect Trader Nell Dabney to the scorched bill of sale.
  6. Anvil Ben Ahrens was never linked to the scorched bill of sale.
  7. Anvil Ben Ahrens never made it as far as Nine Mile Flat.
  8. Wagon Boss Cass Deverell kept well clear of Nine Mile Flat.

The grid

On a narrow screen the grid scrolls sideways.

Your marks, completions and streak are saved in this browser only. There is no account, and clearing your browser data clears that local progress. If you accept analytics, the site sends anonymous puzzle-usage events; it never sends your grid marks, clues or solution.

If you want a hundred more

Five volumes, printed and portable

Each Frontier Logic volume collects 100 western mystery logic-grid puzzles, every one with exactly one solution and a complete answer key. Every volume stands alone, in standard and large print.

Opens Amazon, who sell the books and set the final price.