Very Easy — logic-grid deduction puzzle
Help the organiser work out who played each round of the club tournament, and with which piece.
The club's tabletop tournament is over. It ran in rounds, with one player in each: first the warm-up, then the qualifier, then the semi-final, and last of all the final. The warm-up and the qualifier were the two early rounds. Marla, Osgood, Winnie and Rafael each played one round, and each moved a different piece around the board. But when the organiser packed up, juice spilled on the scoresheet, and now nobody can read who played when or with which piece. All that's left are a few things the players remember. Can you put the sheet back together before the next game starts?
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