KöMaL 2013 A585
For some integer 2 each pair (,), where 1,, is written on a card. We play the following game. The cards are placed in an ×table so that for every and , the card (,) is in the th row, at the th position. It is allowed to exchange the cards (,) and (,) if they are in the same row or in the same column, and = or =. Is it possible to reach that arrangement of the cards which contains (1,2) and (2,1) interchanged and all other cards are at their initial positions?
Official text KöMaL. Quoted with source.
Solutions
No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.
Similar problems
These problems have the most words in common with this statement.