Hard — logic-grid deduction puzzle
The wind scattered the judge's notes, and the scorecard for Delaney, Hollis, Prudence and Trevor has to be pieced back together.
Four handlers came to the moorland arena: Delaney, Hollis, Prudence and Trevor. Each one sent a dog out to gather a small flock of sheep. Every flock wore its own painted marker so the judge could tell them apart. The judge wrote down each score with care. Then a gust of wind swept across the arena, caught the stack of notes and scattered them over the stands. Only a few were found again. Before the prizes can be handed out, someone has to piece the scorecard back together.
Read the clues, rule out what cannot be, and prove what must be. Every GRIDIGMA puzzle is verified by a solver that shows the reasoning behind each step, so a solution is never a guess.
Logic grid puzzles: how to solve them, with a worked example