Daily case

Frontier Logic Daily No. 31 October 5, 2026 Rookie

The Thirsty Flat Trouble: a free Western logic-grid puzzle

The sheriff has four riders, one afternoon at Thirsty Flat, and a stack of statements that cannot all be true. The territory expects an answer by sundown.

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. Perla Bustos was placed at Cottonwood Ford, plain as day.
  2. The crushed honeycomb was Dolores Arvizu's, and nobody disputes it.
  3. It wasn't Perla Bustos who turned up with the split hide water bag.
  4. Perla Bustos swore off any connection to the tarnished wedding ring, and the ledger agrees.
  5. Whatever else is true, Dell Sowerby wasn't at Thirsty Flat.
  6. Nobody could place Dell Sowerby at Cerro Prieto.
  7. Padre Anselmo Lugo kept well clear of Thirsty Flat.
  8. Padre Anselmo Lugo had nothing to do with the split hide water bag.

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.