Very Easy — logic-grid deduction puzzle
At a robot sorting trial, each volunteer wrote down a neighbour total: the blocks sorted at the tables right beside theirs added together, or the single neighbouring table's count at an end of the row.
At the capital's humanoid robot games, robots raced to sort blocks, and four volunteers kept count. Their tables stood in a single row. The first table was nearest the entrance, then came the second and the third, and the fourth stood at the far end. Each volunteer worked at a different table, and a different number of blocks was sorted at each table. Every volunteer also wrote down a neighbour total. This was the blocks sorted at the tables right beside their own, added together, without counting their own table. A table at either end of the row had only one neighbour, so that one table's count was the whole neighbour total. The robots did the sorting, and the people got the paperwork.
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