23 Jul '04 08:29>2 edits
There is a square room with a chessboard-patterned floor. The walls and ceiling are completely smooth and featureless except for in two places: behind the White Queen's square, there is a door, and set in the wall next to the Black Queen's square there is a safe containing an extremely valuable chess set made with jewels and precious metals.
The tiles are very large, so you can only make King's moves. When you place your full weight on a tile, it and all tiles with which it shares a side flip from white to black or from black to white. However, walking or jumping on the same tile will not cause it to flip repeatedly - if you want to flip it again you have to activate another tile first.
Both the door and the safe are quite small and can only be reached from the respective Queen's squares. They are also both unopenable and unmoveable, except when the tiles form a perfect chessboard pattern, as they do initially. You start standing outside the room, by the door. You don't have any tools, implements or accomplices to help you.
You want to take the chess set out of the room - but how?
The tiles are very large, so you can only make King's moves. When you place your full weight on a tile, it and all tiles with which it shares a side flip from white to black or from black to white. However, walking or jumping on the same tile will not cause it to flip repeatedly - if you want to flip it again you have to activate another tile first.
Both the door and the safe are quite small and can only be reached from the respective Queen's squares. They are also both unopenable and unmoveable, except when the tiles form a perfect chessboard pattern, as they do initially. You start standing outside the room, by the door. You don't have any tools, implements or accomplices to help you.
You want to take the chess set out of the room - but how?