Frontier Logic

Daily case

Frontier Logic Daily No. 37 October 11, 2026 Rookie

The Last Trail Matter: a free Western logic-grid puzzle

Something went wrong at Last Trail, and the only honest account of it is the one set down in the ledger below. See what the facts will carry.

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. Two witnesses put Quiet Tom Beaudry at Cuesta Alta.
  2. Everyone agreed Cassius Mowbray was at Last Trail.
  3. The broken hub band never belonged to Quiet Tom Beaudry.
  4. The deputy struck the worn mail pouch off Quiet Tom Beaudry's account.
  5. Ottilie Bracken wasn't carrying the broken strongbox hasp.
  6. It wasn't Slim Pete Rourke who turned up with the broken hub band.
  7. Nobody saw Slim Pete Rourke anywhere near Chalk Flat.
  8. It wasn't Ottilie Bracken who turned up with the broken hub band.
  9. Quiet Tom Beaudry had nothing to do with the broken strongbox hasp.

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.